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source/_posts/durian/spring-native.md

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+---
+title: GraalVM 构建 Spring Native 应用
+categories: [后端]
+tags: [Spring Native, GraalVM]
+date: 2023-03-28 09:33:31
+updated: 2023-03-28 09:33:31
+description: Win 平台下构建 Spring Native 应用
+---
+
+# 准备工作
+
+- GraalVM 配置
+  - 下载 GraalVM
+  - 设置 JAVA_HOME
+  - 设置 Path 将 GraalVM 放在最前面
+  - *运行 `gu install native-image` (不需要，在编译过程中会自动下载)
+- Win 编辑工具
+  - 下载 Visual Studio Build Tools 和 Windows SDK
+
+原生编译不容易的，准备工作弄好，好几个G的空间没了
+
+<!-- more -->
+
+# 创建例子项目
+
+新建一个 Spring Boot 项目，包含一些常规的依赖
+
+![](https://raw.githubusercontent.com/jiangtj/picgo-repo/master/img-a20230328092112.png)
+
+不需要 `GraalVM Native Support`，这是构建镜像用的
+
+添加一个`/`首页接口
+
+```java
+@SpringBootApplication
+public class NativeExampleApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(NativeExampleApplication.class, args);
+    }
+
+    @Configuration
+    public static class HomeIndex {
+        @Bean
+        public RouterFunction<ServerResponse> homeRoutes() {
+            return route()
+                .GET("/", serverRequest ->
+                    ServerResponse.ok().bodyValue("Hello, native example!"))
+                .build();
+        }
+    }
+
+}
+```
+
+运行项目，我们可以看到需要`1.99s`，访问`localhost:8080`返回`Hello, native example!`
+
+![](https://raw.githubusercontent.com/jiangtj/picgo-repo/master/img-a20230328092527.png)
+
+# 原生构建
+
+搜索并打开`x64 Native Tools Command Prompt for VS 2022`
+
+![](https://raw.githubusercontent.com/jiangtj/picgo-repo/master/img-a20230328095632.png)
+
+在你的项目位置，运行`.\mvnw.cmd -Pnative native:compile`，耐心等待编译完成
+
+```
+Produced artifacts:
+ I:\Users\MrTT\Desktop\native-example\target\native-example.build_artifacts.txt (txt)
+ I:\Users\MrTT\Desktop\native-example\target\native-example.exe (executable)
+========================================================================================================================
+Finished generating 'native-example' in 2m 7s.
+[INFO] ------------------------------------------------------------------------
+[INFO] BUILD SUCCESS
+[INFO] ------------------------------------------------------------------------
+[INFO] Total time:  02:27 min
+[INFO] Finished at: 2023-03-28T09:28:42+08:00
+[INFO] ------------------------------------------------------------------------
+```
+
+花费`2m27s`还行，`native-example.exe`有66mb，有点大，但毕竟不需要jre，也还行吧
+
+# 运行测试
+
+在`target`下运行`.\native-example.exe`
+
+![](https://raw.githubusercontent.com/jiangtj/picgo-repo/master/img-a20230328093129.png)
+
+`0.19s`启动，快了很多