{"id":45312,"date":"2023-08-05T08:38:41","date_gmt":"2022-11-24T13:54:04","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/45312-2\/"},"modified":"2024-04-30T17:06:17","modified_gmt":"2024-04-30T09:06:17","slug":"45312-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/45312-2\/","title":{"rendered":""},"content":{"rendered":"<p>Rust\u521d\u5fc3\u8005\u3067\u3059\u3002<br \/>\nRust \u3092\u4f7f\u3044\u59cb\u3081\u3066\u4e00\u304b\u6708\u304f\u3089\u3044\u305f\u3061\u307e\u3057\u305f\u3002<br \/>\n\u7c21\u5358\u306a HTTP \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u66f8\u304d\u65b9\u3092\u52c9\u5f37\u3057\u307e\u3057\u305f\u3002<br \/>\n\u3068\u308a\u3042\u3048\u305a\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308b\u3068\u3053\u308d\u307e\u3067\u304d\u307e\u3057\u305f\u306e\u3067\u30e1\u30e2\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n<h1>\u304a\u984c<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u6307\u5b9a\u3057\u305fURL\u306b\u63a5\u7d9a\u3057\u305f\u7d50\u679c\u3092\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\u3057\u3001\u305d\u306e\u3068\u304d\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u6a19\u6e96\u51fa\u529b\u306b\u8868\u793a\u3059\u308b\u30c4\u30fc\u30eb\u3092\u4f5c\u308a\u305f\u3044\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u4f7f\u3044\u65b9\u306f\u3053\u3093\u306a\u611f\u3058\u3067\u3002<\/ul>\n<pre class=\"post-pre\"><code>\/\/ \u4f7f\u3044\u65b9\r\nC:\\work&gt;study0217.exe\r\n[USAGE] study0217.exe url out_file\r\n\r\n\/\/ Rust \u30ed\u30b4\u306e\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\r\nC:\\work&gt;study0217.exe https:\/\/docs.rs\/-\/rustdoc.static\/rust-logo-151179464ae7ed46.svg rust.svg\r\nstatus code = 200\r\n<\/code><\/pre>\n<h1>\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/h1>\n<p>Cargo.toml<\/p>\n<pre class=\"post-pre\"><code>[package]\r\nname = \"study0217\"\r\nversion = \"0.1.0\"\r\nedition = \"2021\"\r\n\r\n# See more keys and their definitions at https:\/\/doc.rust-lang.org\/cargo\/reference\/manifest.html\r\n\r\n[dependencies]\r\nbytes = \"1.4.0\"\r\nreqwest = \"0.11.14\"\r\ntokio = {version = \"1.25.0\", features = [\"full\"] }\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"c1\">\/\/ main.rs<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"n\">io<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"n\">env<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">fs<\/span><span class=\"p\">::<\/span><span class=\"n\">File<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"nn\">bytes<\/span><span class=\"p\">::<\/span><span class=\"n\">Buf<\/span><span class=\"p\">;<\/span>\r\n<span class=\"k\">use<\/span> <span class=\"n\">reqwest<\/span><span class=\"p\">;<\/span>\r\n\r\n<span class=\"nd\">#[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=\"p\">{<\/span>\r\n\r\n    <span class=\"c1\">\/\/ \u5f15\u6570\u3092\u30c1\u30a7\u30c3\u30af<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">args<\/span><span class=\"p\">:<\/span><span class=\"nb\">Vec<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">String<\/span><span class=\"o\">&gt;<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">env<\/span><span class=\"p\">::<\/span><span class=\"nf\">args<\/span><span class=\"p\">()<\/span><span class=\"nf\">.collect<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"n\">args<\/span><span class=\"nf\">.len<\/span><span class=\"p\">()<\/span> <span class=\"o\">&lt;<\/span> <span class=\"mi\">3<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nd\">eprintln!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"[USAGE] study0217.exe url out_file\"<\/span><span class=\"p\">);<\/span>\r\n        <span class=\"k\">return<\/span>\r\n    <span class=\"p\">}<\/span>\r\n\r\n    <span class=\"c1\">\/\/ \u5f15\u6570\u304b\u3089\u63a5\u7d9a\u5148URL\u3068\u51fa\u529b\u5148\u30d5\u30a1\u30a4\u30eb\u540d\u3092\u53d6\u5f97<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">url<\/span> <span class=\"o\">=<\/span> <span class=\"n\">args<\/span><span class=\"p\">[<\/span><span class=\"mi\">1<\/span><span class=\"p\">]<\/span><span class=\"nf\">.as_str<\/span><span class=\"p\">();<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">out_file<\/span> <span class=\"o\">=<\/span> <span class=\"n\">args<\/span><span class=\"p\">[<\/span><span class=\"mi\">2<\/span><span class=\"p\">]<\/span><span class=\"nf\">.as_str<\/span><span class=\"p\">();<\/span>\r\n\r\n    <span class=\"k\">match<\/span> <span class=\"nf\">run<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"n\">url<\/span><span class=\"p\">,<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">out_file<\/span><span class=\"p\">)<\/span><span class=\"k\">.await<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"n\">status_code<\/span><span class=\"p\">)<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"nd\">println!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"status code = {}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">status_code<\/span><span class=\"p\">),<\/span>\r\n        <span class=\"nf\">Err<\/span><span class=\"p\">(<\/span><span class=\"n\">e<\/span><span class=\"p\">)<\/span> <span class=\"k\">=&gt;<\/span> <span class=\"nd\">eprintln!<\/span><span class=\"p\">(<\/span><span class=\"s\">\"[ERROR] {:?}\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">e<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"k\">async<\/span> <span class=\"k\">fn<\/span> <span class=\"nf\">run<\/span><span class=\"p\">(<\/span><span class=\"n\">url<\/span><span class=\"p\">:<\/span><span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">,<\/span> <span class=\"n\">out_file<\/span><span class=\"p\">:<\/span><span class=\"o\">&amp;<\/span><span class=\"nb\">str<\/span><span class=\"p\">)<\/span> <span class=\"k\">-&gt;<\/span> <span class=\"nb\">Result<\/span><span class=\"o\">&lt;<\/span><span class=\"nb\">u16<\/span><span class=\"p\">,<\/span> <span class=\"nb\">Box<\/span><span class=\"o\">&lt;<\/span><span class=\"k\">dyn<\/span> <span class=\"nn\">std<\/span><span class=\"p\">::<\/span><span class=\"nn\">error<\/span><span class=\"p\">::<\/span><span class=\"n\">Error<\/span><span class=\"o\">&gt;&gt;<\/span> <span class=\"p\">{<\/span>\r\n\r\n    <span class=\"c1\">\/\/ URL \u306b\u5bfe\u3057\u3066 GET \u30e1\u30bd\u30c3\u30c9\u3067\u30a2\u30af\u30bb\u30b9<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">res<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">reqwest<\/span><span class=\"p\">::<\/span><span class=\"nf\">get<\/span><span class=\"p\">(<\/span><span class=\"n\">url<\/span><span class=\"p\">)<\/span>\r\n        <span class=\"k\">.await<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n    \r\n    <span class=\"c1\">\/\/ \u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u53d6\u5f97<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"n\">status_code<\/span> <span class=\"o\">=<\/span> <span class=\"n\">res<\/span><span class=\"nf\">.status<\/span><span class=\"p\">()<\/span><span class=\"nf\">.as_u16<\/span><span class=\"p\">();<\/span>\r\n\r\n    <span class=\"c1\">\/\/ \u30ec\u30b9\u30dd\u30f3\u30b9\u30dc\u30c7\u30a3\u30fc\u306e Read \u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u53d6\u5f97<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">r<\/span> <span class=\"o\">=<\/span> <span class=\"n\">res<\/span><span class=\"nf\">.bytes<\/span><span class=\"p\">()<\/span>\r\n        <span class=\"k\">.await<\/span><span class=\"o\">?<\/span>\r\n        <span class=\"nf\">.reader<\/span><span class=\"p\">();<\/span>\r\n\r\n    <span class=\"c1\">\/\/ \u51fa\u529b\u5148\u30d5\u30a1\u30a4\u30eb\u30aa\u30fc\u30d7\u30f3<\/span>\r\n    <span class=\"k\">let<\/span> <span class=\"k\">mut<\/span> <span class=\"n\">w<\/span> <span class=\"o\">=<\/span> <span class=\"nn\">File<\/span><span class=\"p\">::<\/span><span class=\"nf\">create<\/span><span class=\"p\">(<\/span><span class=\"n\">out_file<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"c1\">\/\/ \u30ec\u30b9\u30dd\u30f3\u30b9\u30dc\u30c7\u30a3\u30fc\u3092\u51fa\u529b\u5148\u30d5\u30a1\u30a4\u30eb\u306b\u30b3\u30d4\u30fc<\/span>\r\n    <span class=\"nn\">io<\/span><span class=\"p\">::<\/span><span class=\"nf\">copy<\/span><span class=\"p\">(<\/span><span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"n\">r<\/span><span class=\"p\">,<\/span> <span class=\"o\">&amp;<\/span><span class=\"k\">mut<\/span> <span class=\"n\">w<\/span><span class=\"p\">)<\/span><span class=\"o\">?<\/span><span class=\"p\">;<\/span>\r\n\r\n    <span class=\"c1\">\/\/ \u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3092\u30ea\u30bf\u30fc\u30f3<\/span>\r\n    <span class=\"nf\">Ok<\/span><span class=\"p\">(<\/span><span class=\"n\">status_code<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u3053\u3053\u307e\u3067\u306e\u611f\u60f3\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3064\u3044\u306b Rust \u306e\u975e\u540c\u671f\u30b3\u30fc\u30c9\u306b\u89e6\u308c\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002\u307e\u3063\u305f\u304f\u975e\u540c\u671f\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\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\">\u3068\u308a\u3042\u3048\u305a\u306e reqwest \u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3002\u30b0\u30b0\u3063\u3066\u8abf\u3079\u305f\u3068\u3053\u308d\u3001\u898b\u3064\u304b\u3063\u305f\u30b5\u30f3\u30d7\u30eb\u3067\u306f\u3069\u308c\u3082 Response \u304b\u3089 text() \u30e1\u30bd\u30c3\u30c9\u3067\u30c6\u30ad\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3059\u4f5c\u4f8b\u3070\u304b\u308a\u3067\u3057\u305f\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\">\u30c6\u30ad\u30b9\u30c8\u3058\u3083\u306a\u3044\u30b3\u30f3\u30c6\u30f3\u30c4\u3082\u60f3\u5b9a\u3057\u3066 bytes() \u30e1\u30bd\u30c3\u30c9\u3067\u30d0\u30a4\u30c8\u5217\u3092\u53d6\u308a\u51fa\u3057\u3001reader() \u30e1\u30bd\u30c3\u30c9\u3067\u30b9\u30c8\u30ea\u30fc\u30e0\u5316\u3057\u3066\u307f\u307e\u3057\u305f\u3002\u3042\u3068\u306f io::copy \u3067\u51fa\u529b\u5148\u30d5\u30a1\u30a4\u30eb\u306b\u30b3\u30d4\u30fc\u3059\u308b\u3068\u3044\u3046\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\">\u4eca\u56de\u3061\u3087\u3063\u3068\u3057\u305f\u767a\u898b\u304c\u3042\u308a\u307e\u3057\u305f\u3002run \u95a2\u6570\u306e\u8fd4\u308a\u5024\u306e\u3088\u3046\u306b dyn std::error::Error \u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092 Result \u3067\u5305\u3093\u3067\u8fd4\u3059\u3088\u3046\u306b\u3057\u3066\u304a\u3051\u3070\u3001\u8907\u6570\u7a2e\u985e\u306e Error \u3092\u4e00\u5143\u7684\u306b\u8fd4\u305b\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3057\u305f\u3002\u3053\u306e\u4f8b\u3067\u306f run \u95a2\u6570\u306e\u4e2d\u3067 reqwest::Error \u3068 std:: io::Error \u3092 ? \u3067\u8fd4\u3059\u7b87\u6240\u304c\u6df7\u5728\u3057\u3066\u3044\u308b\u306e\u3067\u3059\u304c\u3001\u3053\u308c\u306a\u3089\u3069\u3061\u3089\u3082\u53d7\u3051\u53d6\u308c\u307e\u3059\u3002\u304a\u304b\u3052\u3067\u4eca\u5f8c\u306e\u30a8\u30e9\u30fc\u51e6\u7406\u306e\u30b9\u30bf\u30a4\u30eb\u304c\u78ba\u7acb\u3067\u304d\u305d\u3046\u306a\u6c17\u304c\u3057\u3066\u3044\u307e\u3059\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u5165\u9580\u66f8\u3082\u307e\u3068\u3082\u306b\u8aad\u307e\u305a\u306b\u898b\u69d8\u898b\u771f\u4f3c\u3067\u4e00\u304b\u6708\u3084\u3063\u3066\u304d\u307e\u3057\u305f\u3002\u9806\u756a\u304c\u5c11\u3057\u304a\u304b\u3057\u3044\u306e\u3067\u3059\u304c\u3001\u305d\u308d\u305d\u308d Rust \u672c\u3092\u4e00\u518a\u8aad\u3080\u3060\u3051\u306e\u4e0b\u6e96\u5099\u304c\u3067\u304d\u305f\u3088\u3046\u306a\u6c17\u304c\u3057\u3066\u3044\u307e\u3059\u3002<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Rust\u521d\u5fc3\u8005\u3067\u3059\u3002 Rust \u3092\u4f7f\u3044\u59cb\u3081\u3066\u4e00\u304b\u6708\u304f\u3089\u3044\u305f\u3061\u307e\u3057\u305f\u3002 \u7c21\u5358\u306a HTTP \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u66f8\u304d\u65b9\u3092 [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-45312","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\/45312-2\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:description\" content=\"Rust\u521d\u5fc3\u8005\u3067\u3059\u3002 Rust \u3092\u4f7f\u3044\u59cb\u3081\u3066\u4e00\u304b\u6708\u304f\u3089\u3044\u305f\u3061\u307e\u3057\u305f\u3002 \u7c21\u5358\u306a HTTP \u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u66f8\u304d\u65b9\u3092 [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/45312-2\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2022-11-24T13:54:04+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-30T09:06:17+00:00\" \/>\n<meta name=\"author\" content=\"\u96c5, \u609f\" \/>\n<meta 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