{"id":31413,"date":"2024-02-01T15:43:50","date_gmt":"2023-09-28T12:57:07","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e8%b0%83%e7%94%a8rust\/"},"modified":"2025-08-12T23:55:24","modified_gmt":"2025-08-12T15:55:24","slug":"%e4%bd%bf%e7%94%a8java%e8%b0%83%e7%94%a8rust","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8java%e8%b0%83%e7%94%a8rust\/","title":{"rendered":"\u4f7f\u7528Java\u8c03\u7528Rust"},"content":{"rendered":"<h1>\u6982\u62ec\u7b80\u8ff0<\/p>\n<p>\u6211\u6574\u7406\u4e86\u4f7f\u7528JNA\u8c03\u7528Rust\u7684\u65b9\u6cd5\u3002<\/p>\n<h1>\u5907\u524d\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5c06JNA\u5e93\u6dfb\u52a0\u5230maven\u6216build.sbt\u6587\u4ef6\u4e2d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">scalaVersion<\/span> <span class=\"o\">:=<\/span> <span class=\"s\">\"2.13.6\"<\/span>\r\n<span class=\"n\">libraryDependencies<\/span> <span class=\"o\">+=<\/span> <span class=\"s\">\"net.java.dev.jna\"<\/span> <span class=\"o\">%<\/span> <span class=\"s\">\"jna\"<\/span> <span class=\"o\">%<\/span> <span class=\"s\">\"5.9.0\"<\/span>\r\n<span class=\"n\">libraryDependencies<\/span> <span class=\"o\">+=<\/span> <span class=\"s\">\"net.java.dev.jna\"<\/span> <span class=\"o\">%<\/span> <span class=\"s\">\"jna-platform\"<\/span> <span class=\"o\">%<\/span> <span class=\"s\">\"5.9.0\"<\/span>\r\n<\/code><\/pre>\n<h1>\u4f7f\u7528Java\u8c03\u7528Rust<\/p>\n<h2>\u4f60\u597d\u4e16\u754c\u7684\u7a0b\u5e8f<\/p>\n<h3>\u4f7f\u7528 Rust \u521b\u5efa\u5171\u4eab\u5e93<\/p>\n<p>\u6211\u5c06\u521b\u5efa\u4e00\u4e2a\u5982\u4e0b\u7684\u7a0b\u5e8f\u3002<\/p>\n<pre class=\"post-pre\"><code>\/\/ #[no_mangle]\u3092\u6307\u5b9a\u3059\u308b\u3068\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u30e1\u30bd\u30c3\u30c9\u540d\u3092\u5909\u66f4\u3055\u308c\u306a\u3044\u3088\u3046\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\r\n#[no_mangle]\r\nfn main() {\r\n    println!(\"Hello, world!\");\r\n}\r\n<\/code><\/pre>\n<p>\u7136\u540e\uff0c\u5728Mac\u4e2d\uff0c\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u5171\u4eab\u5e93\u3002<\/p>\n<pre class=\"post-pre\"><code>rustc main.rs --crate-type=dylib\r\n<\/code><\/pre>\n<p>\u203b \u5b9e\u9645\u4e0a\uff0c\u4f7f\u7528 cargo \u8fdb\u884c\u6784\u5efa\u4f3c\u4e4e\u66f4\u52a0\u5b9e\u7528\u548c\u4f18\u79c0\u3002<\/p>\n<h3>Java\u65b9\u9762\u7684\u5b9e\u73b0<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Library<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Native<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">JnaHoge<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">interface<\/span> <span class=\"nc\">HogeInterface<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Library<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">HogeInterface<\/span> <span class=\"no\">INSTANCE<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Native<\/span><span class=\"o\">.<\/span><span class=\"na\">load<\/span><span class=\"o\">(<\/span><span class=\"s\">\"main\"<\/span><span class=\"o\">,<\/span> <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">);<\/span>\r\n\r\n        <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">();<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"started\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">INSTANCE<\/span><span class=\"o\">.<\/span><span class=\"na\">main<\/span><span class=\"o\">();<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"finished\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<h3>\u76ee\u5f55\u6811<\/p>\n<p>\u4ee5\u4e0b\u662fmain.rs\u3001libmain.dylib\u548cJnaHoge.java\u7684\u76ee\u5f55\u7ed3\u6784\u3002<\/p>\n<pre class=\"post-pre\"><code>.\r\n\u251c\u2500\u2500 build.sbt\r\n\u251c\u2500\u2500 libmain.dylib\r\n\u251c\u2500\u2500 main.rs\r\n\u251c\u2500\u2500 project\r\n\u2502&nbsp;&nbsp; \u251c\u2500\u2500 build.properties\r\n|\r\n\u251c\u2500\u2500 src\r\n\u2502&nbsp;&nbsp; \u251c\u2500\u2500 main\r\n\u2502&nbsp;&nbsp; \u2502&nbsp;&nbsp; \u251c\u2500\u2500 java\r\n\u2502&nbsp;&nbsp; \u2502&nbsp;&nbsp; \u2502&nbsp;&nbsp; \u2514\u2500\u2500 JnaHoge.java\r\n\u2502&nbsp;&nbsp; \u2502&nbsp;&nbsp; \u251c\u2500\u2500 resources\r\n\u2502&nbsp;&nbsp; \u2502&nbsp;&nbsp; \u2514\u2500\u2500 scala\r\n\u2502&nbsp;&nbsp; \u2514\u2500\u2500 test\r\n\u2502&nbsp;&nbsp;     \u2514\u2500\u2500 scala\r\n<\/code><\/pre>\n<h3>\u6267\u884c\u7ed3\u679c<\/p>\n<p>\u5bf9\u4e8esbt\u7684\u60c5\u51b5\uff0c\u53ef\u4ee5\u901a\u8fc7sbt &#8220;runMain JnaHoge&#8221;\u6765\u6267\u884c\u3002<\/p>\n<p>\u6267\u884c\u7ed3\u679c\uff1a<\/p>\n<pre class=\"post-pre\"><code>started\r\nHello, world!\r\nfinished\r\n<\/code><\/pre>\n<h2>\u4f7f\u7528Rust\u521b\u5efa\u5171\u4eab\u5e93\uff0c\u5e76\u4eceJava\u4e2d\u8c03\u7528\u7684\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n<p>\u5728Rust\u7684std::os::raw\u6a21\u5757\u4e2d\u5b9a\u4e49\u7684\u7c7b\u578b\uff0c\u4fdd\u8bc1\u4e0eC\u7684\u7279\u5b9a\u7c7b\u578b\u5177\u6709\u76f8\u540c\u7684\u8868\u8fbe\u65b9\u5f0f\u3002<br \/>\n\u56e0\u6b64\uff0c\u5f53\u521b\u5efa\u4ece\u5176\u4ed6\u8bed\u8a00\u8c03\u7528\u7684\u51fd\u6570\u65f6\uff0c\u5e94\u8be5\u5728\u53c2\u6570\u548c\u8fd4\u56de\u503c\u4e2d\u4f7f\u7528std::os::raw\u7684\u7c7b\u578b\u3002<\/p>\n<p><h3>\u4f20\u9012\u4e00\u4e2a\u6574\u578b\uff0c\u83b7\u53d6\u4e00\u4e2a\u6574\u578b\u503c<\/p>\n<pre class=\"post-pre\"><code>use std::os::raw::c_int;\r\n\r\n#[no_mangle]\r\nfn plus_one(x: c_int) -&gt; c_int {\r\n    x + 1\r\n}\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Library<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Native<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">JnaHoge<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">interface<\/span> <span class=\"nc\">HogeInterface<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Library<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">HogeInterface<\/span> <span class=\"no\">INSTANCE<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Native<\/span><span class=\"o\">.<\/span><span class=\"na\">load<\/span><span class=\"o\">(<\/span><span class=\"s\">\"main\"<\/span><span class=\"o\">,<\/span> <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">);<\/span>\r\n\r\n        <span class=\"kt\">int<\/span> <span class=\"nf\">plus_one<\/span><span class=\"o\">(<\/span><span class=\"kt\">int<\/span> <span class=\"n\">x<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"started\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"kt\">int<\/span> <span class=\"n\">x<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">INSTANCE<\/span><span class=\"o\">.<\/span><span class=\"na\">plus_one<\/span><span class=\"o\">(<\/span><span class=\"mi\">1<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">x<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"finished\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n<pre class=\"post-pre\"><code>started\r\n2\r\nfinished\r\n<\/code><\/pre>\n<h3>\u901a\u8fc7\u4f20\u9012String\u7c7b\u578b\uff0c\u83b7\u53d6\u4e00\u4e2aString\u7c7b\u578b\u7684\u503c\u3002<\/p>\n<pre class=\"post-pre\"><code>use std::os::raw::c_char;\r\nuse std::ffi::CString;\r\n\r\n#[no_mangle]\r\nunsafe fn append_hoge(cs: *mut c_char) -&gt; *mut c_char {\r\n    let mut cs_string = CString::from_raw(cs).into_string().expect(\"Failed to create String\");\r\n    cs_string.push_str(\"hoge\");\r\n    CString::new(cs_string).expect(\"Failed to create CString\").into_raw()\r\n}\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Library<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Native<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">JnaHoge<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">interface<\/span> <span class=\"nc\">HogeInterface<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Library<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">HogeInterface<\/span> <span class=\"no\">INSTANCE<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Native<\/span><span class=\"o\">.<\/span><span class=\"na\">load<\/span><span class=\"o\">(<\/span><span class=\"s\">\"main\"<\/span><span class=\"o\">,<\/span> <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">);<\/span>\r\n\r\n        <span class=\"nc\">String<\/span> <span class=\"nf\">append_hoge<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span> <span class=\"n\">str<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"started\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">String<\/span> <span class=\"n\">str<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">INSTANCE<\/span><span class=\"o\">.<\/span><span class=\"na\">append_hoge<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u307b\u3052_\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">str<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"finished\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6267\u884c\u7ed3\u679c\uff1a<\/p>\n<pre class=\"post-pre\"><code>started\r\n\u307b\u3052_hoge\r\nfinished\r\n<\/code><\/pre>\n<h3>\u901a\u8fc7\u4f20\u9012\u4e00\u4e2a\u6570\u7ec4\u6765\u83b7\u53d6\u4e00\u4e2a\u6570\u7ec4\u3002<\/p>\n<pre class=\"post-pre\"><code>use std::os::raw::c_int;\r\n\r\n#[no_mangle]\r\nunsafe fn add_one(array: *mut c_int, new_array: *mut c_int) {\r\n    let new_slice = std::slice::from_raw_parts_mut(new_array, 3);\r\n    let slice = std::slice::from_raw_parts(array, 3);\r\n    new_slice[0] = slice[0] * 10;\r\n    new_slice[1] = slice[1] * 10;\r\n    new_slice[2] = slice[2] * 10;\r\n}\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Library<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Native<\/span><span class=\"o\">;<\/span>\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">JnaHoge<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">interface<\/span> <span class=\"nc\">HogeInterface<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Library<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">HogeInterface<\/span> <span class=\"no\">INSTANCE<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Native<\/span><span class=\"o\">.<\/span><span class=\"na\">load<\/span><span class=\"o\">(<\/span><span class=\"s\">\"main\"<\/span><span class=\"o\">,<\/span> <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">);<\/span>\r\n\r\n        <span class=\"kt\">void<\/span> <span class=\"nf\">add_one<\/span><span class=\"o\">(<\/span><span class=\"kt\">int<\/span><span class=\"o\">[]<\/span> <span class=\"n\">array<\/span><span class=\"o\">,<\/span> <span class=\"kt\">int<\/span><span class=\"o\">[]<\/span> <span class=\"n\">newArray<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"started\"<\/span><span class=\"o\">);<\/span>\r\n\r\n        <span class=\"kt\">int<\/span><span class=\"o\">[]<\/span> <span class=\"n\">array<\/span> <span class=\"o\">=<\/span> <span class=\"o\">{<\/span><span class=\"mi\">4<\/span><span class=\"o\">,<\/span> <span class=\"mi\">5<\/span><span class=\"o\">,<\/span> <span class=\"mi\">6<\/span><span class=\"o\">};<\/span>\r\n        <span class=\"kt\">int<\/span><span class=\"o\">[]<\/span> <span class=\"n\">newArray<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"kt\">int<\/span><span class=\"o\">[<\/span><span class=\"mi\">3<\/span><span class=\"o\">];<\/span>\r\n        <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">INSTANCE<\/span><span class=\"o\">.<\/span><span class=\"na\">add_one<\/span><span class=\"o\">(<\/span><span class=\"n\">array<\/span><span class=\"o\">,<\/span> <span class=\"n\">newArray<\/span><span class=\"o\">);<\/span>\r\n\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">newArray<\/span><span class=\"o\">[<\/span><span class=\"mi\">0<\/span><span class=\"o\">]);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">newArray<\/span><span class=\"o\">[<\/span><span class=\"mi\">1<\/span><span class=\"o\">]);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">newArray<\/span><span class=\"o\">[<\/span><span class=\"mi\">2<\/span><span class=\"o\">]);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"finished\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6267\u884c\u7ed3\u679c\uff1a<\/p>\n<pre class=\"post-pre\"><code>started\r\n40\r\n50\r\n60\r\nfinished\r\n<\/code><\/pre>\n<h3>\u63d0\u4f9b\u4e00\u4e2a\u7ed3\u6784\u4f53\u4ee5\u83b7\u5f97Java\u7c7b<\/p>\n<pre class=\"post-pre\"><code>use std::os::raw::c_int;\r\nuse std::os::raw::c_char;\r\n\r\n#[repr(C)] \/\/ C\u8a00\u8a9e\u306e\u69cb\u9020\u4f53\u3068\u4e92\u63db\u6027\u3092\u6301\u305f\u305b\u308b\u3088\u3046\u306b\u3059\u308b\u30a2\u30c8\u30ea\u30d3\u30e5\u30fc\u30c8\r\nstruct Person {\r\n    age: c_int,\r\n    name: *mut c_char\r\n}\r\n\r\n#[no_mangle]\r\nunsafe fn set_age(person: *mut Person) -&gt; *mut Person {\r\n    (*person).age = 25;\r\n    person\r\n}\r\n<\/code><\/pre>\n<pre class=\"post-pre\"><code><span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Library<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Native<\/span><span class=\"o\">;<\/span>\r\n<span class=\"kn\">import<\/span> <span class=\"nn\">com.sun.jna.Structure<\/span><span class=\"o\">;<\/span>\r\n\r\n\r\n<span class=\"kd\">public<\/span> <span class=\"kd\">class<\/span> <span class=\"nc\">JnaHoge<\/span> <span class=\"o\">{<\/span>\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">interface<\/span> <span class=\"nc\">HogeInterface<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Library<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">HogeInterface<\/span> <span class=\"no\">INSTANCE<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">Native<\/span><span class=\"o\">.<\/span><span class=\"na\">load<\/span><span class=\"o\">(<\/span><span class=\"s\">\"main\"<\/span><span class=\"o\">,<\/span> <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">class<\/span><span class=\"o\">);<\/span>\r\n\r\n        <span class=\"nd\">@Structure<\/span><span class=\"o\">.<\/span><span class=\"na\">FieldOrder<\/span><span class=\"o\">({<\/span><span class=\"s\">\"age\"<\/span><span class=\"o\">,<\/span> <span class=\"s\">\"name\"<\/span><span class=\"o\">})<\/span>\r\n        <span class=\"kd\">class<\/span> <span class=\"nc\">Person<\/span> <span class=\"kd\">extends<\/span> <span class=\"nc\">Structure<\/span> <span class=\"o\">{<\/span>\r\n            <span class=\"kd\">public<\/span> <span class=\"kt\">int<\/span> <span class=\"n\">age<\/span><span class=\"o\">;<\/span>\r\n            <span class=\"kd\">public<\/span> <span class=\"nc\">String<\/span> <span class=\"n\">name<\/span><span class=\"o\">;<\/span>\r\n\r\n            <span class=\"kt\">void<\/span> <span class=\"nf\">setName<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span> <span class=\"n\">str<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n                <span class=\"n\">name<\/span> <span class=\"o\">=<\/span> <span class=\"n\">str<\/span><span class=\"o\">;<\/span>\r\n            <span class=\"o\">}<\/span>\r\n        <span class=\"o\">}<\/span>\r\n\r\n\r\n        <span class=\"nc\">Person<\/span> <span class=\"nf\">set_age<\/span><span class=\"o\">(<\/span><span class=\"nc\">Person<\/span> <span class=\"n\">person<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n\r\n    <span class=\"kd\">public<\/span> <span class=\"kd\">static<\/span> <span class=\"kt\">void<\/span> <span class=\"nf\">main<\/span><span class=\"o\">(<\/span><span class=\"nc\">String<\/span><span class=\"o\">[]<\/span> <span class=\"n\">args<\/span><span class=\"o\">)<\/span> <span class=\"o\">{<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"started\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">Person<\/span> <span class=\"n\">person<\/span> <span class=\"o\">=<\/span> <span class=\"k\">new<\/span> <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">Person<\/span><span class=\"o\">();<\/span>\r\n        <span class=\"n\">person<\/span><span class=\"o\">.<\/span><span class=\"na\">setName<\/span><span class=\"o\">(<\/span><span class=\"s\">\"\u30d1\u30bf\u30fc\u30bd\u30f3\"<\/span><span class=\"o\">);<\/span>\r\n\r\n        <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">Person<\/span> <span class=\"n\">newPerson<\/span> <span class=\"o\">=<\/span> <span class=\"nc\">HogeInterface<\/span><span class=\"o\">.<\/span><span class=\"na\">INSTANCE<\/span><span class=\"o\">.<\/span><span class=\"na\">set_age<\/span><span class=\"o\">(<\/span><span class=\"n\">person<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">person<\/span><span class=\"o\">.<\/span><span class=\"na\">name<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\"(\"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">person<\/span><span class=\"o\">.<\/span><span class=\"na\">age<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\")\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"n\">newPerson<\/span><span class=\"o\">.<\/span><span class=\"na\">name<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\"(\"<\/span> <span class=\"o\">+<\/span> <span class=\"n\">newPerson<\/span><span class=\"o\">.<\/span><span class=\"na\">age<\/span> <span class=\"o\">+<\/span> <span class=\"s\">\")\"<\/span><span class=\"o\">);<\/span>\r\n        <span class=\"nc\">System<\/span><span class=\"o\">.<\/span><span class=\"na\">out<\/span><span class=\"o\">.<\/span><span class=\"na\">println<\/span><span class=\"o\">(<\/span><span class=\"s\">\"finished\"<\/span><span class=\"o\">);<\/span>\r\n    <span class=\"o\">}<\/span>\r\n<span class=\"o\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6267\u884c\u7ed3\u679c:<\/p>\n<pre class=\"post-pre\"><code>started\r\n\u30d1\u30bf\u30fc\u30bd\u30f3(25)\r\n\u30d1\u30bf\u30fc\u30bd\u30f3(25)\r\nfinished\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u62ec\u7b80\u8ff0 \u6211\u6574\u7406\u4e86\u4f7f\u7528JNA\u8c03\u7528Rust\u7684\u65b9\u6cd5\u3002 \u5907\u524d\u3002 \u9996\u5148\uff0c\u5c06JNA\u5e93\u6dfb\u52a0\u5230maven\u6216build.sbt [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31413","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"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>\u4f7f\u7528Java\u8c03\u7528Rust - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e\u4f7f\u7528Java\u8c03\u7528Rust\u7684\u6280\u672f\u6587\u7ae0\" \/>\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\/\u4f7f\u7528java\u8c03\u7528rust\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" 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