{"id":45197,"date":"2023-10-14T22:41:04","date_gmt":"2024-02-29T13:20:11","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/"},"modified":"2024-05-04T04:14:58","modified_gmt":"2024-05-03T20:14:58","slug":"45197-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/","title":{"rendered":""},"content":{"rendered":"<h2>Rust\u3068\u306f<\/h2>\n<p>&nbsp;<\/p>\n<p>Rust\u306fFirefox\u3067\u6709\u540d\u306aMozilla\u793e\u306b\u3088\u3063\u3066\u958b\u767a\u3055\u308c\u3066\u3044\u305f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9e\u3067\u3059\u30022021\u5e74\u304b\u3089\u306fRust Foundation\u304c\u7acb\u3061\u4e0a\u304c\u308a\u958b\u767a\u3092\u4e3b\u5c0e\u3057\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>Rust\u306e\u5927\u304d\u306a\u7279\u5fb4\u3068\u3057\u3066\u306f\u4ee5\u4e0b\u306e\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30e1\u30e2\u30ea\u52b9\u7387\u304c\u9ad8\u304f\u30e9\u30f3\u30bf\u30a4\u30e0\u3084\u30ac\u30d9\u30fc\u30b8\u30b3\u30ec\u30af\u30bf\u304c\u306a\u3044\u305f\u3081C\/C++\u3068\u540c\u7b49\u306e\u51e6\u7406\u901f\u5ea6\u3092\u8a87\u308a\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\u306e\u8a18\u4e8b\u306f\u305f\u304f\u3055\u3093\u3042\u308a\u307e\u3059\u304c\u4ee5\u4e0b\u306e\u8a18\u4e8b\u304c\u8907\u6570\u8a00\u8a9e\u3092\u6bd4\u8f03\u3057\u3066\u3044\u3066\u5206\u304b\u308a\u3084\u3059\u304b\u3063\u305f\u3067\u3059\u3002<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u5b89\u5168\u6027<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30b3\u30f3\u30d1\u30a4\u30e9\u8a00\u8a9e\u3067\u3042\u308bRust\u306f\u8c4a\u304b\u306a\u578b\u30b7\u30b9\u30c6\u30e0\u3068\u6240\u6709\u6a29\u30e2\u30c7\u30eb\u306b\u3088\u308a\u30e1\u30e2\u30ea\u5b89\u5168\u6027\u3068\u30b9\u30ec\u30c3\u30c9\u5b89\u5168\u6027\u304c\u4fdd\u8a3c\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u69d8\u3005\u306a\u30d0\u30b0\u3092\u6392\u9664\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">Rust\u306b\u306f\u6240\u6709\u6a29\u3068\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u3068\u3044\u3046\u6982\u5ff5\u304c\u3042\u308a\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\u3002<\/ul>\n<pre class=\"post-pre\"><code><span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">data<\/span> <span class=\"o\">=<\/span> <span class=\"nd\">vec!<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"mi\">2<\/span><span class=\"p\">,<\/span> <span class=\"mi\">3<\/span><span class=\"p\">];<\/span>\r\n<span class=\"c1\">\/\/ \u5185\u90e8\u30c7\u30fc\u30bf\u306e\u53c2\u7167\u3092\u53d6\u308b<\/span>\r\n<span class=\"k\">let<\/span> <span class=\"n\">x<\/span> <span class=\"o\">=<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">data<\/span><span class=\"p\">[<\/span><span class=\"mi\">0<\/span><span class=\"p\">];<\/span>\r\n\r\n<span class=\"c1\">\/\/ \u3057\u307e\u3063\u305f! `push` \u306b\u3088\u3063\u3066 `data` \u306e\u683c\u7d0d\u5148\u304c\u518d\u5272\u308a\u5f53\u3066\u3055\u308c\u3066\u3057\u307e\u3063\u305f\u3002<\/span>\r\n<span class=\"c1\">\/\/ \u30c0\u30f3\u30b0\u30ea\u30f3\u30b0\u30dd\u30a4\u30f3\u30bf\u3060! \u30e1\u30e2\u30ea\u89e3\u653e\u5f8c\u306e\u53c2\u7167\u3060! \u3046\u308f\u30fc\u30fc!<\/span>\r\n<span class=\"c1\">\/\/ \uff08\u3053\u306e\u30b3\u30fc\u30c9\u306f Rust \u3067\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u308a\u307e\u3059\uff09<\/span>\r\n<span class=\"n\">data<\/span><span class=\"nf\">.push<\/span><span class=\"p\">(<\/span><span class=\"mi\">4<\/span><span class=\"p\">);<\/span>\r\n\r\n<span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"{}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">x<\/span><span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<p>ref: \u6240\u6709\u6a29\u3068\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0<\/p>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d5d7a37434c4406cf1a8c\/9-0.png\" alt=\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8 2022-04-12 8.41.22.png\" \/><\/div>\n<p>\u3068\u308a\u3042\u3048\u305aRust\u304c\u306a\u3093\u3068\u306a\u304f\u51c4\u305d\u3046\uff1f\u306a\u306e\u306f\u5206\u304b\u3063\u305f\u306e\u3067\u3001\u5b9f\u969b\u306b\u74b0\u5883\u69cb\u7bc9\u3057\u3066\u7c21\u5358\u306aREST API\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3092\u30b4\u30fc\u30eb\u306b\u9032\u3093\u3067\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<h2>Rust\u74b0\u5883\u69cb\u7bc9<\/h2>\n<p>\u52d5\u4f5c\u74b0\u5883\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">macOS Monterey (v12.1)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">MacBook Pro (14\u30a4\u30f3\u30c1\u30012021)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30c1\u30c3\u30d7: Apple M1 Max<\/ul>\n<h3>rustup\u3092install<\/h3>\n<p>Rust\u306frustup\u3068\u3044\u3046\u30c4\u30fc\u30eb\u306b\u3088\u3063\u3066\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30fb\u7ba1\u7406\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30b3\u30de\u30f3\u30c9\u3067install\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>brew <span class=\"nb\">install <\/span>rustup-init\r\n<span class=\"nv\">$ <\/span>rustup-init\r\n \r\n<span class=\"nv\">$ <\/span><span class=\"nb\">exec<\/span> <span class=\"nv\">$SHELL<\/span> <span class=\"nt\">-l<\/span> <span class=\"c\"># restart shell<\/span>\r\n<\/code><\/pre>\n<p>\u3082\u3057shell\u3092fish\u306b\u3057\u3066\u3044\u308b\u65b9\u306f\u3053\u3061\u3089\u306e\u30b3\u30de\u30f3\u30c9\u3088\u308a\u30d1\u30b9\u3092\u901a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nb\">set<\/span> <span class=\"nt\">-U<\/span> fish_user_paths <span class=\"nv\">$fish_user_paths<\/span> <span class=\"nv\">$HOME<\/span>\/.cargo\/bin\r\n<\/code><\/pre>\n<p>\u3053\u308c\u3067rustup\u30b3\u30de\u30f3\u30c9\u3068\u30d3\u30eb\u30c9\u30b7\u30b9\u30c6\u30e0\u517c\u30d1\u30c3\u30b1\u30fc\u30b8\u30de\u30cd\u30fc\u30b8\u30e3\u306ecargo\u3082install\u3055\u308c\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>rustup <span class=\"nt\">--version<\/span>\r\n<span class=\"o\">&gt;<\/span> rustup 1.24.3 <span class=\"o\">(<\/span>2021-05-31<span class=\"o\">)<\/span>\r\n\r\n<span class=\"nv\">$ <\/span>cargo <span class=\"nt\">--version<\/span>\r\n<span class=\"o\">&gt;<\/span> cargo 1.59.0 <span class=\"o\">(<\/span>49d8809dc 2022-02-10<span class=\"o\">)<\/span>\r\n<\/code><\/pre>\n<h3>\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210<\/h3>\n<p>rustup\u3092install\u3067\u304d\u305f\u3089\u65e9\u901f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code>cargo new rust_practice\r\n\r\n<\/code><\/pre>\n<p>\u4f5c\u6210\u3055\u308c\u305f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3001 rust_practice\u3092\u958b\u304f\u3068Cargo\u304c2\u3064\u306e\u30d5\u30a1\u30a4\u30eb\u30681\u3064\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u751f\u6210\u3057\u3066\u304f\u308c\u305f\u3053\u3068\u304c\u308f\u304b\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\nRust\u3067\u306f\u57fa\u672c\u7684\u306bsrc\/\u4ee5\u4e0b\u306b\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u8a18\u5165\u3057\u3066\u3044\u304d\u307e\u3059\u3002 \u81ea\u52d5\u3067\u4f5c\u6210\u3055\u308c\u305fsrc\/main.rs\u3092\u898b\u308b\u3068<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hello, world!\"<\/span><span class=\"p\">);<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u3068\u66f8\u304b\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u65e9\u901fcargo run\u30b3\u30de\u30f3\u30c9\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3066\u3053\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>cargo run\r\n<span class=\"o\">&gt;<\/span> Compiling rust_demo v0.1.0 <span class=\"o\">(<\/span>\/Users\/andrew\/repos\/rust_demo<span class=\"o\">)<\/span>\r\n    Finished dev <span class=\"o\">[<\/span>unoptimized + debuginfo] target<span class=\"o\">(<\/span>s<span class=\"o\">)<\/span> <span class=\"k\">in <\/span>0.28s\r\n     Running <span class=\"sb\">`<\/span>target\/debug\/rust_demo<span class=\"sb\">`<\/span>\r\nHello, world!\r\n<\/code><\/pre>\n<p>\u7c21\u5358\u306bHello, world!\u307e\u3067\u5b9f\u884c\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u306d\u3002<\/p>\n<p>\u305d\u308c\u3067\u306f\u4eca\u56de\u306fREST API\u3092\u4f5c\u308b\u3068\u3044\u3046\u3053\u3068\u3067web framework\u3092\u5c0e\u5165\u3057\u3066\u3044\u3053\u3046\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2>actix-web\u3092\u5c0e\u5165\u3059\u308b<\/h2>\n<p>Rust\u306eweb framework\u306f\u8907\u6570\u3042\u308a\u3001\u6709\u540d\u3069\u3053\u308d\u3060\u3068rocket\u3084actix-web\u304c\u3042\u308a\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u30ea\u30f3\u30af\u5148\u3067\u69d8\u3005\u306aRust\u306eweb framework\u304c\u6bd4\u8f03\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u6c17\u306b\u306a\u308b\u65b9\u306f\u898b\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u4eca\u56de\u306fRust\u306e\u6570\u3042\u308bweb framework\u306e\u4e2d\u3067\u3082\u8efd\u91cf\u3067\u304b\u3064\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u3044\u3044actix-web\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u305f\uff01<br \/>\n\u4ee5\u4e0b\u306e\u30ea\u30f3\u30af\u5148\u306b\u8907\u6570\u8a00\u8a9e\u306eweb framework\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6bd4\u8f03\u304c\u8f09\u3063\u3066\u3044\u307e\u3059\u3001\u305d\u306e\u4e2d\u3067\u3082actix\u306f\u4e0a\u4f4d\u306b\u30e9\u30f3\u30af\u30a4\u30f3\u3057\u3066\u307e\u3059\u306d\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>cargo-edit\u3092\u5c0e\u5165\u3059\u308b<\/h3>\n<p>\u4f5c\u6210\u3055\u308c\u305f\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u898b\u308b\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30d5\u30a1\u30a4\u30eb\u304c\u4f5c\u6210\u3055\u308c\u3066\u3044\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nn\">[package]<\/span>\r\n<span class=\"py\">name<\/span> <span class=\"p\">=<\/span> <span class=\"s\">\"rust_demo\"<\/span>\r\n<span class=\"py\">version<\/span> <span class=\"p\">=<\/span> <span class=\"s\">\"0.1.0\"<\/span>\r\n<span class=\"py\">edition<\/span> <span class=\"p\">=<\/span> <span class=\"s\">\"2021\"<\/span>\r\n\r\n<span class=\"nn\">[dependencies]<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306f\u5916\u90e8\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u7ba1\u7406\u3059\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3001dependencies\u4ee5\u4e0b\u306b\u4f9d\u5b58\u95a2\u4fc2\u3092\u8a18\u8ff0\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u3061\u306a\u307f\u306bRust\u3067\u306f\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u3053\u3068\u3092\u30af\u30ec\u30fc\u30c8\uff08crate\uff09\u3068\u547c\u3073\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u76f4\u63a5<\/p>\n<pre class=\"post-pre\"><code>[dependencies]\r\nactix-web = \"version\"\r\n<\/code><\/pre>\n<p>\u306e\u3088\u3046\u306b\u8a18\u8ff0\u3057\u3066\u3082\u3044\u3044\u306e\u3067\u3059\u304ccargo-edit\u3068\u3044\u3046\u30c4\u30fc\u30eb\u3092install\u3059\u308b\u3068cli\u3067Cargo.toml\u3092\u7de8\u96c6\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u5165\u308c\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>cargo <span class=\"nb\">install <\/span>cargo-edit\r\n<\/code><\/pre>\n<h3>actix-web\u3092install<\/h3>\n<p>\u305d\u3057\u3066\u65e9\u901factix-web\u3092install\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>cargo add\u3000actix-web\r\n<\/code><\/pre>\n<p>Cargo.toml\u304c\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u66f4\u65b0\u3055\u308c\u305f\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nn\">[package]<\/span>\r\n<span class=\"py\">name<\/span> <span class=\"p\">=<\/span> <span class=\"s\">\"rust_demo\"<\/span>\r\n<span class=\"py\">version<\/span> <span class=\"p\">=<\/span> <span class=\"s\">\"0.1.0\"<\/span>\r\n<span class=\"py\">edition<\/span> <span class=\"p\">=<\/span> <span class=\"s\">\"2021\"<\/span>\r\n\r\n<span class=\"c\"># See more keys and their definitions at https:\/\/doc.rust-lang.org\/cargo\/reference\/manifest.html<\/span>\r\n\r\n\r\n<span class=\"nn\">[dependencies]<\/span>\r\n<span class=\"py\">actix-web<\/span> <span class=\"p\">=<\/span> <span class=\"s\">\"4.0.1\"<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u308c\u3067actix-web\u306einstall\u306f\u5b8c\u4e86\u3067\u3059\u3002<br \/>\n\u305d\u308c\u3067\u306f\u3068\u308a\u3042\u3048\u305aget\u306eAPI\u3092\u4e00\u3064\u4f5c\u3063\u3066\u307f\u307e\u3059\u3002<br \/>\n\u516c\u5f0f\u30da\u30fc\u30b8\u306b\u3042\u308b\u901a\u308a\u3001main.rs\u3092\u4ee5\u4e0b\u306e\u30b3\u30fc\u30c9\u306b\u7f6e\u304d\u63db\u3048\u3066\u307f\u307e\u3057\u3087\u3046<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">use<\/span> <span class=\"nn\">actix_web<\/span><span class=\"p\">::{<\/span><span class=\"n\">get<\/span><span class=\"p\">,<\/span> <span class=\"n\">web<\/span><span class=\"p\">,<\/span> <span class=\"n\">App<\/span><span class=\"p\">,<\/span> <span class=\"n\">HttpServer<\/span><span class=\"p\">,<\/span> <span class=\"n\">Responder<\/span><span class=\"p\">};<\/span>\r\n\r\n<span class=\"nd\">#[get(<\/span><span class=\"s\">\"\/hello\/{name}\"<\/span><span class=\"nd\">)]<\/span>\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">greet<\/span><span class=\"p\">(<\/span><span class=\"n\">name<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Path<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">String<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"k\">impl<\/span> <span class=\"n\">Responder<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nd\">format!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hello {name}!\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nd\">#[actix_web::main]<\/span> <span class=\"c1\">\/\/ or #[tokio::main]<\/span>\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"nb\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"p\">()<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nn\">HttpServer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(||<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nn\">App<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">()<\/span>\r\n            <span class=\"nf\">.route<\/span><span class=\"p\">(<\/span><span class=\"s\">\"\/hello\"<\/span><span class=\"p\">,<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"nf\">get<\/span><span class=\"p\">()<\/span><span class=\"nf\">.to<\/span><span class=\"p\">(||<\/span> <span class=\"k\">async<\/span> <span class=\"p\">{<\/span> <span class=\"s\">\"Hello World!\"<\/span> <span class=\"p\">}))<\/span>\r\n            <span class=\"nf\">.service<\/span><span class=\"p\">(<\/span><span class=\"n\">greet<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">})<\/span>\r\n    <span class=\"nf\">.bind<\/span><span class=\"p\">((<\/span><span class=\"s\">\"127.0.0.1\"<\/span><span class=\"p\">,<\/span> <span class=\"mi\">8080<\/span><span class=\"p\">))<\/span><span class=\"o\">?<\/span>\r\n    <span class=\"nf\">.run<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"k\">.await<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u305d\u3057\u3066cargo run\u3092\u5b9f\u884c\u3057\u3001http:\/\/localhost:8080\/hello\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068web server\u304c\u7acb\u3061\u4e0a\u304c\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<p>\u5c11\u3057\u516c\u5f0f\u30da\u30fc\u30b8\u304b\u3089\u6301\u3063\u3066\u304d\u305f\u30b3\u30fc\u30c9\u3092\u898b\u3066\u307f\u307e\u3059\u3002<br \/>\n\u307e\u305a\u3001Rust\u3067\u306fcrate\u306eimport\u3092use\u3092\u4f7f\u3063\u3066\u884c\u3044\u307e\u3059\u3002\u305d\u3057\u3066::\u306f\u968e\u5c64\u3092\u8868\u3057\u3001\u3064\u307e\u308ause actix_web::web \u306factix_web\/web.rs\u3092import\u3057\u3066\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u305d\u3057\u3066\u540c\u4e00\u968e\u5c64\u306e\u8907\u6570\u306emodule\u3092import\u3057\u305f\u3044\u5834\u5408\u306f{}\u3067\u62ec\u3063\u3066\u4e00\u62ec\u3067\u5ba3\u8a00\u3067\u304d\u307e\u3059\u3002actix_web\u306egithub repository\u3092\u898b\u308b\u3068\u3088\u308a\u3057\u3063\u304f\u308a\u304f\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>Rust\u306e\u95a2\u6570\u306ffn\u3067\u5b9a\u7fa9\u3057\u3001\u95a2\u6570\u306e\u5f15\u6570\u3068\u8fd4\u308a\u5024\u306b\u578b\u5b9a\u7fa9\u3092\u3057\u3066\u3044\u308b\u306e\u304c\u7279\u5fb4\u7684\u3067\u3059\u3002\u3053\u306e\u578b\u5b9a\u7fa9\u3092\u9593\u9055\u3048\u308b\u3068\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u30a8\u30e9\u30fc\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u305d\u308c\u3067\u306fweb API\u3092\u7acb\u3061\u4e0a\u3052\u308b\u3053\u3068\u306b\u6210\u529f\u3057\u305f\u306e\u3067\u6b21\u306fDB\u3068\u7e4b\u3044\u3067\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>diesel\u3092\u5c0e\u5165\u3059\u308b<\/h2>\n<p>Rust\u306eORM\u306fdiesel\u304c\u73fe\u6642\u70b9\u3067\u306f\u4e00\u5f37\u3067\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<h3>install<\/h3>\n<p>actix_web\u540c\u69d8cargo add diesel\u3067crate\u3092import\u3057\u3066\u3044\u304d\u307e\u3059\u3002\u4eca\u56de\u306fDB\u306bMySQL\u3092\u4f7f\u3046\u306e\u3067&#8211;feature flag\u3092\u4f7f\u3063\u3066install\u3057\u3066\u3044\u304d\u307e\u3059\u3002feature\u30d5\u30e9\u30b0\u3068\u306f\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u30af\u30ec\u30fc\u30c8\u306e\u7279\u5b9a\u306e\u6a5f\u80fd\u306e\u6709\u52b9\u306b\u3059\u308b\u305f\u3081\u306e\u30d5\u30e9\u30b0\u3067\u3059\u3002\u4ee5\u4e0b\u30b3\u30de\u30f3\u30c9\u3067install\u3057\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002(r2d2\u306f\u5f8c\u8ff0)<\/p>\n<pre class=\"post-pre\"><code> cargo add diesel <span class=\"nt\">--features<\/span> mysql <span class=\"nt\">--features<\/span> r2d2  \r\n<\/code><\/pre>\n<p>\u307e\u305fDB\u306e\u60c5\u5831\u3092.env\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u8aad\u307f\u8fbc\u307e\u305b\u308b\u3088\u3046\u306b\u3057\u305f\u3044\u306e\u3067dotenv\u3082install\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>cargo add dotenv\r\n<\/code><\/pre>\n<p>&nbsp;<\/p>\n<h3>diesel-cli\u3067migration\u306e\u5b9f\u884c<\/h3>\n<p>\u305d\u3046\u3057\u305f\u3089\u307e\u305a\u306fDB\u306btable\u3092\u4f5c\u6210\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\nmigration\u3092\u5b9f\u884c\u3059\u308b\u305f\u3081\u306ecli\u3001diesel-cli\u3092install\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># diesel cli\u3092install<\/span>\r\ncargo <span class=\"nb\">install <\/span>diesel_cli <span class=\"nt\">--no-default-features<\/span> <span class=\"nt\">--features<\/span> mysql\r\n<\/code><\/pre>\n<p>install\u304c\u5b8c\u4e86\u3057\u305f\u3089diesel\u30b3\u30de\u30f3\u30c9\u304c\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308b\u306f\u305a\u3067\u3059\u3002\u4ee5\u4e0b\u30b3\u30de\u30f3\u30c9\u3067migration\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c\"># migrations dir\u3092\u4f5c\u6210<\/span>\r\ndiesel setup\r\n\r\n<span class=\"c\"># migration file\u4f5c\u6210<\/span>\r\ndiesel migration generate create_users\r\n<span class=\"o\">&gt;<\/span> Creating migrations\/2022-04-12-132620_create_users\/up.sql\r\n<span class=\"o\">&gt;<\/span> Creating migrations\/2022-04-12-132620_create_users\/down.sql\r\n<\/code><\/pre>\n<p>\u4f5c\u6210\u3055\u308c\u305fsql\u30d5\u30a1\u30a4\u30eb\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306bup\u3068down\u306e\u30af\u30a8\u30ea\u3092\u66f8\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">CREATE<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">users<\/span>\r\n<span class=\"p\">(<\/span>\r\n    <span class=\"n\">id<\/span> <span class=\"nb\">INT<\/span> <span class=\"k\">PRIMARY<\/span> <span class=\"k\">KEY<\/span> <span class=\"n\">AUTO_INCREMENT<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">email<\/span> <span class=\"nb\">VARCHAR<\/span><span class=\"p\">(<\/span><span class=\"mi\">64<\/span><span class=\"p\">)<\/span> <span class=\"k\">NOT<\/span> <span class=\"k\">NULL<\/span>\r\n<span class=\"p\">);<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"k\">DROP<\/span> <span class=\"k\">TABLE<\/span> <span class=\"n\">users<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>Migration\u3092\u5b9f\u884c\u3057\u3066\u3044\u304d\u307e\u3059\u3002DATABASE_URL\u3092\u74b0\u5883\u5909\u6570\u3082\u3057\u304f\u306f.env\u306b\u8a2d\u5b9a\u3059\u308c\u3070\u63a5\u7d9a\u5148\u306eDB\u3092\u6307\u5b9a\u3067\u304d\u308b\u306e\u3067.env\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u3063\u3066\u3057\u307e\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code>#{user}, {password}, {port}\u306b\u306flocal\u3067\u7acb\u3061\u4e0a\u304c\u3063\u3066\u3044\u308bMySQL\u3078\u306e\u30ed\u30b0\u30a4\u30f3\u60c5\u5831\u3092\u5165\u308c\u3066\u304f\u3060\u3055\u3044\u3002\r\nDATABASE_URL=mysql:\/\/{user}:{password}@127.0.0.1:{port}\/rust_practice\r\n<\/code><\/pre>\n<p>\u305d\u3057\u305f\u3089MySQL\u306b\u5165\u308a\u5148\u306b\u4eca\u56de\u4f7f\u7528\u3059\u308bDB\u3001rust_practice\u3092\u4f5c\u6210\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n<pre class=\"post-pre\"><code>create database rust_practice;\r\n<\/code><\/pre>\n<p>\u6e96\u5099\u306f\u6574\u3063\u305f\u306e\u3067\u4ee5\u4e0b\u30b3\u30de\u30f3\u30c9\u3067migration\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>diesel migration run\r\n<\/code><\/pre>\n<p>migration\u304c\u5b8c\u4e86\u3059\u308b\u3068__diesel_schema_migrations\u3068userstable\u304c\u4f5c\u6210\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u304c\u5206\u304b\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">mysql<\/span><span class=\"o\">&gt;<\/span> <span class=\"k\">show<\/span> <span class=\"n\">tables<\/span><span class=\"p\">;<\/span>\r\n<span class=\"o\">+<\/span><span class=\"c1\">----------------------------+<\/span>\r\n<span class=\"o\">|<\/span> <span class=\"n\">Tables_in_rust_practice<\/span>    <span class=\"o\">|<\/span>\r\n<span class=\"o\">+<\/span><span class=\"c1\">----------------------------+<\/span>\r\n<span class=\"o\">|<\/span> <span class=\"n\">__diesel_schema_migrations<\/span> <span class=\"o\">|<\/span>\r\n<span class=\"o\">|<\/span> <span class=\"n\">users<\/span>                      <span class=\"o\">|<\/span>\r\n<span class=\"o\">+<\/span><span class=\"c1\">----------------------------+<\/span>\r\n<span class=\"mi\">2<\/span> <span class=\"k\">rows<\/span> <span class=\"k\">in<\/span> <span class=\"k\">set<\/span> <span class=\"p\">(<\/span><span class=\"mi\">0<\/span><span class=\"p\">.<\/span><span class=\"mi\">01<\/span> <span class=\"n\">sec<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>__diesel_schema_migrations\u306b\u306fmigration\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u304c\u5165\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u304a\u308a\u307e\u3059\u3002<br \/>\n\u3055\u3089\u306b\u4e0a\u8a18\u30b3\u30de\u30f3\u30c9\u3067\u81ea\u52d5\u3067src\/schema.rs\u304c\u4f5c\u6210\u3055\u308c\u3066\u3044\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nd\">table!<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nf\">users<\/span> <span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">id<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">Integer<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"n\">email<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">Varchar<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u5b9a\u7fa9\u3057\u305fSQL\u3092\u5143\u306bRust\u3067\u306e\u578b\u3092\u5b9a\u7fa9\u3057\u305fschema\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3066\u304f\u308c\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306fmodel\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u304d\u307e\u3059\u3002model.rs\u3092\u4f5c\u6210\u3057\u4ee5\u4e0b\u306e\u3088\u3046\u306bUser\u30e2\u30c7\u30eb\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">pub<\/span> <span class=\"k\">struct<\/span> <span class=\"n\">User<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">pub<\/span> <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nb\">i32<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"k\">pub<\/span> <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>struct\u306f\u69cb\u9020\u4f53\u3068\u547c\u3070\u308c\u3001\u30c7\u30fc\u30bf\u578b\u306e\u8981\u7d20\u3092\u96c6\u3081\u305f\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u3067model\u306e\u4f5c\u6210\u3082\u5b8c\u4e86\u3067\u3059\u3002<\/p>\n<h3>db connection pool\u306e\u4f5c\u6210<\/h3>\n<p>\u6b21\u306bsrc\/db.rs\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3001\u305d\u3053\u306bdiesel\u3092\u7528\u3044\u3066DB\u3068\u63a5\u7d9a\u3059\u308b\u305f\u3081\u306e\u30b3\u30fc\u30c9\u3092\u8a18\u8ff0\u3057\u3066\u3044\u304d\u307e\u3059\u3002<br \/>\nconnection pool\u3092\u4f5c\u6210\u3057actix_web\u306binject\u3067\u304d\u308b\u3088\u3046connection pool\u7ba1\u7406\u7528crate\u306er2d2\u3082install\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>cargo add r2d2\r\n<\/code><\/pre>\n<p>&nbsp;<\/p>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306bdb.rs\u3092\u7de8\u96c6\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">use<\/span> <span class=\"nn\">diesel<\/span><span class=\"p\">::<\/span><span class=\"nn\">mysql<\/span><span class=\"p\">::<\/span><span class=\"n\">MysqlConnection<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">diesel<\/span><span class=\"p\">::<\/span><span class=\"nn\">r2d2<\/span><span class=\"p\">::<\/span><span class=\"n\">ConnectionManager<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">dotenv<\/span><span class=\"p\">::<\/span><span class=\"n\">dotenv<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">pub<\/span> <span class=\"k\">type<\/span> <span class=\"n\">Pool<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">r2d2<\/span><span class=\"p\">::<\/span><span class=\"n\">Pool<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">ConnectionManager<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">MysqlConnection<\/span><span class=\"o\">&gt;&gt;<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">pub<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">establish_connection<\/span><span class=\"p\">()<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"n\">Pool<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nf\">dotenv<\/span><span class=\"p\">()<\/span><span class=\"nf\">.ok<\/span><span class=\"p\">();<\/span>\r\n\r\n    <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">env<\/span><span class=\"p\">::<\/span><span class=\"nf\">set_var<\/span><span class=\"p\">(<\/span><span class=\"s\">\"RUST_LOG\"<\/span><span class=\"p\">,<\/span> <span class=\"s\">\"actix_web=debug\"<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">database_url<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">env<\/span><span class=\"p\">::<\/span><span class=\"nf\">var<\/span><span class=\"p\">(<\/span><span class=\"s\">\"DATABASE_URL\"<\/span><span class=\"p\">)<\/span><span class=\"nf\">.expect<\/span><span class=\"p\">(<\/span><span class=\"s\">\"DATABASE_URL must be set\"<\/span><span class=\"p\">);<\/span>\r\n\r\n    <span class=\"c1\">\/\/ create db connection pool<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">manager<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">ConnectionManager<\/span><span class=\"p\">::<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">MysqlConnection<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"n\">database_url<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">pool<\/span><span class=\"p\">:<\/span> <span class=\"n\">Pool<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">r2d2<\/span><span class=\"p\">::<\/span><span class=\"nn\">Pool<\/span><span class=\"p\">::<\/span><span class=\"nf\">builder<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"nf\">.build<\/span><span class=\"p\">(<\/span><span class=\"n\">manager<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.expect<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Failed to create pool.\"<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"n\">pool<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<p>use\u3092\u4f7f\u3063\u3066\u5916\u90e8crate\u3092\u8aad\u307f\u8fbc\u3080\u3068\u3053\u308d\u306f\u540c\u3058\u3067\u3059\u304c\u3001pub\u3092\u3064\u3051\u3066main.rs\u3067\u53c2\u7167\u3057\u305f\u3044\u95a2\u6570\u3084type\u3092\u5b9a\u7fa9\u3057\u3066\u304a\u308a\u307e\u3059\u3002<br \/>\n\u5909\u6570\u524d\u306b\u3064\u304flet\u306fRust\u306f\u5909\u6570\u5b9a\u7fa9\u306e\u305f\u3081\u306b\u4f7f\u308f\u308c\u308b\u3082\u306e\u3067\u3059\u3002Rust\u3067\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u5909\u6570\u306f\u30a4\u30df\u30e5\u30fc\u30bf\u30d6\u30eb(\u5909\u66f4\u4e0d\u53ef\u80fd)\u306b\u306a\u3063\u3066\u304a\u308a\u3001\u5909\u66f4\u53ef\u80fd\u306b\u3059\u308b\u306b\u306f\u660e\u793a\u7684\u306blet mut foo = xxx\u3068\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>main\u3067import<\/h3>\n<p>\u305d\u3046\u3057\u305f\u3089main.rs\u3067\u5148\u307b\u3069\u4f5c\u6210\u3057\u305fdb.rs module\u3092import\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">mod<\/span> <span class=\"n\">db<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<p>\u3068\u66f8\u304f\u3053\u3068\u3067crate\u5185\u306e\u30d5\u30a1\u30a4\u30eb(module)\u3092\u8aad\u307f\u8fbc\u3080\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002(use\u3067\u306f\u52d5\u304b\u306a\u3044\u306e\u3067\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002)<br \/>\n\u5b9f\u306fRust\u3067\u306fdefault\u3067\u306fsrc\/main.rs\u307e\u305f\u306fsrc\/lib.rs\u3067mod\u3092\u7528\u3044\u3066import\u3055\u308c\u3066\u3044\u308bmodule\u3092\u9664\u3044\u3066\u30b3\u30f3\u30d1\u30a4\u30eb\u5bfe\u8c61\u306b\u306a\u308a\u307e\u305b\u3093\u3002\u3067\u3059\u306e\u3067schema\u3068model\u3082mod\u3067import\u3057\u3066\u304a\u304d\u307e\u3059\u3002<br \/>\n\u307e\u305fRust\u306f2018\u306b\u30e1\u30b8\u30e3\u30fc\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u884c\u3044Rust2018\u3068\u547c\u3070\u308c\u308b\u8a18\u6cd5\u3068Rust2015\u3067\u8a18\u6cd5\u304c\u7570\u306a\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\ndiesel\u306f\u4e00\u90e8Rust2018\u306e\u8a18\u6cd5\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u306e\u3067\u4ee5\u524d\u306euse\u306e\u66f8\u304d\u65b9\u3067\u3042\u308b\u4ee5\u4e0b\u8a18\u6cd5\u3067crate\u3092import\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nd\">#[macro_use]<\/span>\r\n<span class=\"k\">extern<\/span> <span class=\"k\">crate<\/span> <span class=\"n\">diesel<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">mod<\/span> <span class=\"n\">db<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">mod<\/span> <span class=\"n\">model<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">mod<\/span> <span class=\"n\">schema<\/span><span class=\"p\">;<\/span>\r\n<\/code><\/pre>\n<h3>connection pool\u3092actix_web\u306binject<\/h3>\n<p>connection pool\u3092inject\u3059\u308b\u305f\u3081\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30b3\u30fc\u30c9\u3092\u66f8\u304d\u63db\u3048\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nd\">#[macro_use]<\/span>\r\n<span class=\"k\">extern<\/span> <span class=\"k\">crate<\/span> <span class=\"n\">diesel<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"k\">use<\/span> <span class=\"nn\">actix_web<\/span><span class=\"p\">::<\/span><span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Data<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">actix_web<\/span><span class=\"p\">::{<\/span><span class=\"n\">get<\/span><span class=\"p\">,<\/span> <span class=\"n\">web<\/span><span class=\"p\">,<\/span> <span class=\"n\">App<\/span><span class=\"p\">,<\/span> <span class=\"n\">HttpServer<\/span><span class=\"p\">,<\/span> <span class=\"n\">Responder<\/span><span class=\"p\">};<\/span>\r\n<span class=\"k\">mod<\/span> <span class=\"n\">db<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">mod<\/span> <span class=\"n\">model<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">mod<\/span> <span class=\"n\">schema<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nd\">#[get(<\/span><span class=\"s\">\"\/users\/{id}\"<\/span><span class=\"nd\">)]<\/span>\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">get<\/span><span class=\"p\">(<\/span><span class=\"n\">db<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Data<\/span><span class=\"o\">&lt;<\/span><span class=\"nn\">db<\/span><span class=\"p\">::<\/span><span class=\"n\">Pool<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span> <span class=\"n\">id<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Path<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">String<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"k\">impl<\/span> <span class=\"n\">Responder<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c1\">\/\/ db connection\u304c\u5229\u7528\u53ef\u80fd\u306b\uff01<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">conn<\/span> <span class=\"o\">=<\/span> <span class=\"n\">db<\/span><span class=\"nf\">.get<\/span><span class=\"p\">()<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"nd\">format!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Hello {id}!\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"nd\">#[actix_web::main]<\/span>\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"nb\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"p\">()<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c1\">\/\/ db module\u304b\u3089establish_connection\u95a2\u6570\u3092import<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">pool<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">db<\/span><span class=\"p\">::<\/span><span class=\"nf\">establish_connection<\/span><span class=\"p\">();<\/span>\r\n\r\n    <span class=\"c1\">\/\/ app_data\u3092\u7528\u3044actix_web\u306bdb pool\u3092inject<\/span>\r\n    <span class=\"nn\">HttpServer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(||<\/span> <span class=\"nn\">App<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">()<\/span><span class=\"nf\">.app_data<\/span><span class=\"p\">(<\/span><span class=\"nn\">Data<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"n\">pool<\/span><span class=\"nf\">.clone<\/span><span class=\"p\">()))<\/span><span class=\"nf\">.service<\/span><span class=\"p\">(<\/span><span class=\"n\">get<\/span><span class=\"p\">))<\/span>\r\n        <span class=\"nf\">.bind<\/span><span class=\"p\">((<\/span><span class=\"s\">\"127.0.0.1\"<\/span><span class=\"p\">,<\/span> <span class=\"mi\">8080<\/span><span class=\"p\">))<\/span><span class=\"o\">?<\/span>\r\n        <span class=\"nf\">.run<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"k\">.await<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u308c\u3067db pool\u3092\u5404\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3067\u4f7f\u7528\u53ef\u80fd\u306b\u306a\u308a\u307e\u3057\u305f\uff01<br \/>\n\u6b21\u306fget\u95a2\u6570\u306b\u6ce8\u76ee\u3057\u3066\u5909\u66f4\u3092\u52a0\u3048\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<h2>Serde\uff08serializer\uff09\u306e\u5c0e\u5165<\/h2>\n<p>\u307e\u305a\u5bfe\u8c61\u306eid\u306e\u30e6\u30fc\u30b6\u30fc\u3092json\u3067\u8fd4\u5374\u3059\u308bAPI\u3092\u4f5c\u6210\u3057\u305f\u3044\u306e\u3067diesel\u3067\u5b9a\u7fa9\u3057\u305fmodel\u3092json\u306bserialize\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u305f\u3081serde\u3068\u3044\u3046serializer\u306ecrate\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<p>&nbsp;<\/p>\n<pre class=\"post-pre\"><code>cargo add serde --features derive \r\n<\/code><\/pre>\n<p>model.rs\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u4fee\u6b63\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">use<\/span> <span class=\"k\">crate<\/span><span class=\"p\">::<\/span><span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"n\">users<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">serde<\/span><span class=\"p\">::{<\/span><span class=\"n\">Deserialize<\/span><span class=\"p\">,<\/span> <span class=\"n\">Serialize<\/span><span class=\"p\">};<\/span>\r\n\r\n<span class=\"nd\">#[derive(Queryable,<\/span> <span class=\"nd\">Insertable,<\/span> <span class=\"nd\">Deserialize,<\/span> <span class=\"nd\">Serialize)]<\/span>\r\n<span class=\"nd\">#[table_name<\/span> <span class=\"nd\">=<\/span> <span class=\"s\">\"users\"<\/span><span class=\"nd\">]<\/span>\r\n<span class=\"k\">pub<\/span> <span class=\"k\">struct<\/span> <span class=\"n\">User<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"c1\">\/\/ id\u306fauto_increment\u306a\u306e\u3067\u4e0d\u8981<\/span>\r\n    <span class=\"k\">pub<\/span> <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"nb\">String<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<\/code><\/pre>\n<p>\u305d\u3057\u3066main.rs\u306eget\u95a2\u6570\u3092\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ \u8ffd\u52a0<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">diesel<\/span><span class=\"p\">::<\/span><span class=\"n\">ExpressionMethods<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">diesel<\/span><span class=\"p\">::<\/span><span class=\"n\">QueryDsl<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">diesel<\/span><span class=\"p\">::<\/span><span class=\"n\">RunQueryDsl<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nd\">#[get(<\/span><span class=\"s\">\"\/users\/{id}\"<\/span><span class=\"nd\">)]<\/span>\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">get<\/span><span class=\"p\">(<\/span><span class=\"n\">db<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Data<\/span><span class=\"o\">&lt;<\/span><span class=\"nn\">db<\/span><span class=\"p\">::<\/span><span class=\"n\">Pool<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span> <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Path<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">i32<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nb\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"k\">impl<\/span> <span class=\"n\">Responder<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">conn<\/span> <span class=\"o\">=<\/span> <span class=\"n\">db<\/span><span class=\"nf\">.get<\/span><span class=\"p\">()<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">id<\/span> <span class=\"o\">=<\/span> <span class=\"n\">path<\/span><span class=\"nf\">.into_inner<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">user<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"nn\">users<\/span><span class=\"p\">::<\/span><span class=\"n\">table<\/span>\r\n        <span class=\"nf\">.select<\/span><span class=\"p\">(<\/span><span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"nn\">users<\/span><span class=\"p\">::<\/span><span class=\"n\">email<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.filter<\/span><span class=\"p\">(<\/span><span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"nn\">users<\/span><span class=\"p\">::<\/span><span class=\"n\">id<\/span><span class=\"nf\">.eq<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">))<\/span>\r\n        <span class=\"py\">.load<\/span><span class=\"p\">::<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">String<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">conn<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.expect<\/span><span class=\"p\">(<\/span><span class=\"s\">\"error\"<\/span><span class=\"p\">);<\/span>\r\n\r\n    <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"nf\">Json<\/span><span class=\"p\">(<\/span><span class=\"n\">user<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u308c\u3067table\u306b\u8a66\u3057\u306b\u9069\u5f53\u306ausers\u30c7\u30fc\u30bf\u3092\u4f5c\u6210\u3057\u3001\u4f5c\u6210\u3055\u308c\u305fid\u3092\u30d1\u30b9\u306b\u542b\u3081http:\/\/localhost:8080\/users\/1\u3078\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u307e\u3059\u3002\u3059\u308b\u3068\u4f5c\u6210\u3057\u305fusers\u30c7\u30fc\u30bf\u304cjson\u3067\u8fd4\u5374\u3055\u308c\u3066\u308b\u304b\u3068\u601d\u3044\u307e\u3059\uff01<\/p>\n<p>\u3053\u308c\u3067\u4e00\u3064MySQL\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u8fd4\u5374\u3059\u308bAPI\u3092Rust\u3067\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u306d\u3002<\/p>\n<p>\u3042\u3068\u306f\u540c\u3058\u8981\u9818\u3067POST, PUT, DELETE\u306e\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3092\u4f5c\u3063\u3066\u307f\u307e\u3059\u3002<br \/>\n\u30b3\u30fc\u30c9\u3068\u3057\u3066\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ POST API<\/span>\r\n<span class=\"nd\">#[post(<\/span><span class=\"s\">\"\/users\"<\/span><span class=\"nd\">)]<\/span>\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">post<\/span><span class=\"p\">(<\/span><span class=\"n\">db<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Data<\/span><span class=\"o\">&lt;<\/span><span class=\"nn\">db<\/span><span class=\"p\">::<\/span><span class=\"n\">Pool<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span> <span class=\"n\">item<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Json<\/span><span class=\"o\">&lt;<\/span><span class=\"nn\">model<\/span><span class=\"p\">::<\/span><span class=\"n\">User<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nb\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"k\">impl<\/span> <span class=\"n\">Responder<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">conn<\/span> <span class=\"o\">=<\/span> <span class=\"n\">db<\/span><span class=\"nf\">.get<\/span><span class=\"p\">()<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">new_user<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">model<\/span><span class=\"p\">::<\/span><span class=\"n\">User<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"n\">email<\/span><span class=\"p\">:<\/span> <span class=\"n\">item<\/span><span class=\"py\">.email<\/span><span class=\"nf\">.to_string<\/span><span class=\"p\">(),<\/span>\r\n    <span class=\"p\">};<\/span>\r\n    <span class=\"nn\">diesel<\/span><span class=\"p\">::<\/span><span class=\"nf\">insert_into<\/span><span class=\"p\">(<\/span><span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"nn\">users<\/span><span class=\"p\">::<\/span><span class=\"nn\">dsl<\/span><span class=\"p\">::<\/span><span class=\"n\">users<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.values<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">new_user<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.execute<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">conn<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.expect<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Error saving new post\"<\/span><span class=\"p\">);<\/span>\r\n\r\n    <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"nn\">HttpResponse<\/span><span class=\"p\">::<\/span><span class=\"nf\">Created<\/span><span class=\"p\">()<\/span><span class=\"nf\">.body<\/span><span class=\"p\">(<\/span><span class=\"s\">\"get ok\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ PUT API<\/span>\r\n<span class=\"nd\">#[put(<\/span><span class=\"s\">\"\/users\/{id}\"<\/span><span class=\"nd\">)]<\/span>\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">put<\/span><span class=\"p\">(<\/span>\r\n    <span class=\"n\">db<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Data<\/span><span class=\"o\">&lt;<\/span><span class=\"nn\">db<\/span><span class=\"p\">::<\/span><span class=\"n\">Pool<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Path<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">i32<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"n\">item<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Json<\/span><span class=\"o\">&lt;<\/span><span class=\"nn\">model<\/span><span class=\"p\">::<\/span><span class=\"n\">User<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span>\r\n<span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nb\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"k\">impl<\/span> <span class=\"n\">Responder<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">id<\/span> <span class=\"o\">=<\/span> <span class=\"n\">path<\/span><span class=\"nf\">.into_inner<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">conn<\/span> <span class=\"o\">=<\/span> <span class=\"n\">db<\/span><span class=\"nf\">.get<\/span><span class=\"p\">()<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">target<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"nn\">users<\/span><span class=\"p\">::<\/span><span class=\"nn\">dsl<\/span><span class=\"p\">::<\/span><span class=\"n\">users<\/span><span class=\"nf\">.filter<\/span><span class=\"p\">(<\/span><span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"nn\">users<\/span><span class=\"p\">::<\/span><span class=\"nn\">dsl<\/span><span class=\"p\">::<\/span><span class=\"n\">id<\/span><span class=\"nf\">.eq<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">));<\/span>\r\n\r\n    <span class=\"nn\">diesel<\/span><span class=\"p\">::<\/span><span class=\"nf\">update<\/span><span class=\"p\">(<\/span><span class=\"n\">target<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.set<\/span><span class=\"p\">(<\/span><span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"nn\">users<\/span><span class=\"p\">::<\/span><span class=\"nn\">dsl<\/span><span class=\"p\">::<\/span><span class=\"n\">email<\/span><span class=\"nf\">.eq<\/span><span class=\"p\">(<\/span><span class=\"n\">item<\/span><span class=\"py\">.email<\/span><span class=\"nf\">.to_string<\/span><span class=\"p\">()))<\/span>\r\n        <span class=\"nf\">.execute<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">conn<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.expect<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Error updating new post\"<\/span><span class=\"p\">);<\/span>\r\n\r\n    <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"nn\">HttpResponse<\/span><span class=\"p\">::<\/span><span class=\"nf\">Created<\/span><span class=\"p\">()<\/span><span class=\"nf\">.body<\/span><span class=\"p\">(<\/span><span class=\"s\">\"update ok\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ DELETE API<\/span>\r\n<span class=\"nd\">#[delete(<\/span><span class=\"s\">\"\/users\/{id}\"<\/span><span class=\"nd\">)]<\/span>\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">destroy<\/span><span class=\"p\">(<\/span><span class=\"n\">db<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Data<\/span><span class=\"o\">&lt;<\/span><span class=\"nn\">db<\/span><span class=\"p\">::<\/span><span class=\"n\">Pool<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span> <span class=\"n\">path<\/span><span class=\"p\">:<\/span> <span class=\"nn\">web<\/span><span class=\"p\">::<\/span><span class=\"n\">Path<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">i32<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nb\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"k\">impl<\/span> <span class=\"n\">Responder<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">id<\/span> <span class=\"o\">=<\/span> <span class=\"n\">path<\/span><span class=\"nf\">.into_inner<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">conn<\/span> <span class=\"o\">=<\/span> <span class=\"n\">db<\/span><span class=\"nf\">.get<\/span><span class=\"p\">()<\/span><span class=\"nf\">.unwrap<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">target<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"nn\">users<\/span><span class=\"p\">::<\/span><span class=\"nn\">dsl<\/span><span class=\"p\">::<\/span><span class=\"n\">users<\/span><span class=\"nf\">.filter<\/span><span class=\"p\">(<\/span><span class=\"nn\">schema<\/span><span class=\"p\">::<\/span><span class=\"nn\">users<\/span><span class=\"p\">::<\/span><span class=\"nn\">dsl<\/span><span class=\"p\">::<\/span><span class=\"n\">id<\/span><span class=\"nf\">.eq<\/span><span class=\"p\">(<\/span><span class=\"n\">id<\/span><span class=\"p\">));<\/span>\r\n\r\n    <span class=\"nn\">diesel<\/span><span class=\"p\">::<\/span><span class=\"nf\">delete<\/span><span class=\"p\">(<\/span><span class=\"n\">target<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.execute<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">conn<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"nf\">.expect<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Error deleting new post\"<\/span><span class=\"p\">);<\/span>\r\n\r\n    <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"nn\">HttpResponse<\/span><span class=\"p\">::<\/span><span class=\"nf\">Created<\/span><span class=\"p\">()<\/span><span class=\"nf\">.body<\/span><span class=\"p\">(<\/span><span class=\"s\">\"Delete ok\"<\/span><span class=\"p\">))<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u3092\u8ffd\u52a0\u3057\u305f\u306e\u3061\u3001HTTPServer\u306bservice\u3092\u6e21\u305b\u3070\u52d5\u304f\u3088\u3046\u306b\u306a\u308b\u304b\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code>\r\n<span class=\"nd\">#[actix_web::main]<\/span>\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">main<\/span><span class=\"p\">()<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"nb\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"p\">()<\/span><span class=\"o\">&gt;<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">pool<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">db<\/span><span class=\"p\">::<\/span><span class=\"nf\">establish_connection<\/span><span class=\"p\">();<\/span>\r\n\r\n    <span class=\"nn\">HttpServer<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"k\">move<\/span> <span class=\"p\">||<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nn\">App<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">()<\/span>\r\n            <span class=\"nf\">.app_data<\/span><span class=\"p\">(<\/span><span class=\"nn\">Data<\/span><span class=\"p\">::<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"n\">pool<\/span><span class=\"nf\">.clone<\/span><span class=\"p\">()))<\/span>\r\n            <span class=\"nf\">.service<\/span><span class=\"p\">(<\/span><span class=\"n\">get<\/span><span class=\"p\">)<\/span>\r\n            <span class=\"nf\">.service<\/span><span class=\"p\">(<\/span><span class=\"n\">post<\/span><span class=\"p\">)<\/span>\r\n            <span class=\"nf\">.service<\/span><span class=\"p\">(<\/span><span class=\"n\">put<\/span><span class=\"p\">)<\/span>\r\n            <span class=\"nf\">.service<\/span><span class=\"p\">(<\/span><span class=\"n\">destroy<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">})<\/span>\r\n    <span class=\"nf\">.bind<\/span><span class=\"p\">(<\/span><span class=\"s\">\"127.0.0.1:8080\"<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span>\r\n    <span class=\"nf\">.run<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"k\">.await<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>cargo run\u3092\u53e9\u3044\u3066cURL\u3084Postman\u3067\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u3063\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>Rust\u3067\u958b\u767a\u3057\u3066\u307f\u3066\u306e\u611f\u60f3<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">javascript\u2192typescript\u306b\u79fb\u884c\u3057\u305f\u6642\u306e\u3088\u3046\u306a\u578b\u5b9a\u7fa9\u3067\u624b\u3053\u305a\u308b\u611f\u899a\u304c\u3042\u308b\u3002(\u4ed5\u4e8b\u3067\u306f\u4e3b\u306bpython\u3092\u4f7f\u7528\u3057\u3066\u304a\u308a\u307e\u3059)<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30a8\u30b3\u30b7\u30b9\u30c6\u30e0\u304c\u65e2\u306b\u5f37\u529b\u3001\u30ea\u30f3\u30bf\u30fc\u3084\u30d5\u30a9\u30fc\u30de\u30c3\u30c8\u304c\u8c4a\u5bcc\u306b\u3042\u308a\u958b\u767a\u4f53\u9a13\u306f\u304b\u306a\u308a\u3044\u3044\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u65e5\u672c\u8a9e\u306e\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306f\u5c11\u306a\u3081\u3002\u7279\u306bweb API\u306e\u4f5c\u6210\u306b\u95a2\u3057\u3066\u306f\u3002stackoverflow\u306a\u3069\u304b\u3089\u60c5\u5831\u3092\u304b\u304d\u96c6\u3081\u3066\u4f5c\u6210\u3057\u305f\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3001\u5805\u7262\u6027\u3092\u8003\u3048\u308b\u3068\u3053\u308c\u304b\u3089web API\u3068\u3057\u3066\u3082\u3082\u3063\u3068\u4f7f\u308f\u308c\u308b\u3053\u3068\u306b\u306a\u308a\u305d\u3046\u3002<\/ul>\n<p>\u8cea\u554f\u7591\u554f\u7b49\u3042\u308c\u3070\u30b3\u30e1\u30f3\u30c8\u304f\u3060\u3055\u3044\uff01<br \/>\nRust\u65e5\u672c\u8a9e\u306e\u8a18\u4e8b\u304c\u5c11\u306a\u304b\u3063\u305f\u306e\u3067\u3053\u308c\u304b\u3089\u3082\u305f\u304f\u3055\u3093\u60c5\u5831\u767a\u4fe1\u3057\u3066\u3044\u3053\u3046\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u4eca\u56de\u4f7f\u7528\u3057\u305f\u30b3\u30fc\u30c9\u306fgithub\u306b\u3042\u3052\u3066\u304a\u3044\u305f\u306e\u3067\u305c\u3072\u53c2\u8003\u306b\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Rust\u3068\u306f &nbsp; Rust\u306fFirefox\u3067\u6709\u540d\u306aMozilla\u793e\u306b\u3088\u3063\u3066\u958b\u767a\u3055\u308c\u3066\u3044\u305f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45197","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>- Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"Rust\u3068\u306f &nbsp; Rust\u306fFirefox\u3067\u6709\u540d\u306aMozilla\u793e\u306b\u3088\u3063\u3066\u958b\u767a\u3055\u308c\u3066\u3044\u305f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-02-29T13:20:11+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-05-03T20:14:58+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d5d7a37434c4406cf1a8c\/9-0.png\" \/>\n<meta name=\"author\" content=\"\u6e05, \u5b87\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6e05, \u5b87\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/\",\"name\":\"- Blog - Silicon Cloud\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\"},\"datePublished\":\"2024-02-29T13:20:11+00:00\",\"dateModified\":\"2024-05-03T20:14:58+00:00\",\"author\":{\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/1a6ecd3d914d22a5ac32791ffc1fbd8e\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#website\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/\",\"name\":\"Blog - Silicon Cloud\",\"description\":\"\",\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/1a6ecd3d914d22a5ac32791ffc1fbd8e\",\"name\":\"\u6e05, \u5b87\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/4b2016c18459a605fc469c7566608f5686491baa112d0871ee613f61b7210565?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/4b2016c18459a605fc469c7566608f5686491baa112d0871ee613f61b7210565?s=96&d=mm&r=g\",\"caption\":\"\u6e05, \u5b87\"},\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/author\/qingyu\/\"},{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/#local-main-organization-logo\",\"url\":\"\",\"contentUrl\":\"\",\"caption\":\"Blog - Silicon Cloud\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"- Blog - Silicon Cloud","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/","og_locale":"zh_CN","og_type":"article","og_description":"Rust\u3068\u306f &nbsp; Rust\u306fFirefox\u3067\u6709\u540d\u306aMozilla\u793e\u306b\u3088\u3063\u3066\u958b\u767a\u3055\u308c\u3066\u3044\u305f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc [&hellip;]","og_url":"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/","og_site_name":"Blog - Silicon Cloud","article_published_time":"2024-02-29T13:20:11+00:00","article_modified_time":"2024-05-03T20:14:58+00:00","og_image":[{"url":"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d5d7a37434c4406cf1a8c\/9-0.png"}],"author":"\u6e05, \u5b87","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"\u6e05, \u5b87","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"6 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/","url":"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/","name":"- Blog - Silicon Cloud","isPartOf":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website"},"datePublished":"2024-02-29T13:20:11+00:00","dateModified":"2024-05-03T20:14:58+00:00","author":{"@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/1a6ecd3d914d22a5ac32791ffc1fbd8e"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/"]}]},{"@type":"WebSite","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#website","url":"https:\/\/www.silicloud.com\/zh\/blog\/","name":"Blog - Silicon Cloud","description":"","inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/1a6ecd3d914d22a5ac32791ffc1fbd8e","name":"\u6e05, \u5b87","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/4b2016c18459a605fc469c7566608f5686491baa112d0871ee613f61b7210565?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/4b2016c18459a605fc469c7566608f5686491baa112d0871ee613f61b7210565?s=96&d=mm&r=g","caption":"\u6e05, \u5b87"},"url":"https:\/\/www.silicloud.com\/zh\/blog\/author\/qingyu\/"},{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.silicloud.com\/zh\/blog\/45197-2\/#local-main-organization-logo","url":"","contentUrl":"","caption":"Blog - Silicon Cloud"}]}},"_links":{"self":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/45197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/comments?post=45197"}],"version-history":[{"count":2,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/45197\/revisions"}],"predecessor-version":[{"id":96054,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/posts\/45197\/revisions\/96054"}],"wp:attachment":[{"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/media?parent=45197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/categories?post=45197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.silicloud.com\/zh\/blog\/wp-json\/wp\/v2\/tags?post=45197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}