欢迎访问我的GitHubhttps://github.com/zq2599/blog_demos 内容：所有原创文章分类汇总及配套源码，涉及Java、Docker、Kubernetes、DevOPS等； 关于Spring Native
Spring Native到底是什么个人的理解：Spring Native是Spring提供的、制作native image的技术方案，涉及到以下关键技术：
本篇概览作为实战风格的文章，本篇主要内容是开发springboot应用再构建为native image，然后验证其功能和效果，本文由以下内容构成：
环境信息本次实战相关的环境信息如下：
源码下载
新建名为spring-native-tutorials的maven父工程
<?xml version="1.0" encoding="UTF-8"?>4.0.0webmvcorg.springframework.bootspring-boot-starter-parent2.5.0-SNAPSHOTcom.bolingcavalryspring-native-tutorials1.0-SNAPSHOTpom1.8dmikusa/graalvm-tiny2020.0.2spring-releaseSpring releasehttps://repo./releasefalsespring-milestoneSpring milestonehttps://repo./milestonefalsespring-snapshotSpring Snapshotshttps://repo./snapshotfalsespring-releaseSpring releasehttps://repo./releasefalsespring-milestoneSpring milestonehttps://repo./milestonefalsespring-snapshotSpring Snapshotshttps://repo./snapshotfalseorg.springframework.experimentalspring-native0.10.0-SNAPSHOTorg.springframework.cloudspring-cloud-dependencies${spring-cloud.version}pomimportorg.springframework.bootspring-boot-maven-plugin${classifier}
${builder}true${native.build.args}IF_NOT_PRESENTorg.springframework.experimentalspring-aot-maven-plugin0.10.0-SNAPSHOTtest-generatetest-generategenerategenerate
新建springboot类型的maven子工程
<?xml version="1.0" encoding="UTF-8"?>spring-native-tutorialscom.bolingcavalry1.0-SNAPSHOT4.0.0webmvcorg.springframework.experimentalspring-nativeorg.springframework.bootspring-boot-starter-weborg.apache.tomcat.embedtomcat-embed-coreorg.apache.tomcat.embedtomcat-embed-websocketorg.apache.tomcat.experimentaltomcat-embed-programmatic${tomcat.version}org.springframework.bootspring-boot-starter-testtestorg.springframework.experimentalspring-aot-maven-plugintrueorg.springframework.bootspring-boot-maven-plugin
package com.bolingcavalry.webmvc;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestController;
import java.time.LocalDateTime;
@SpringBootApplication
@RestController
public class WebmvcApplication {
public static void main(String[] args) {
SpringApplication.run(WebmvcApplication.class, args);
}
@ResponseStatus(HttpStatus.ACCEPTED)
@GetMapping("/status")
public String status() {
return "status";
}
@GetMapping("/")
public String hello() {
return "1. Hello from Spring MVC and Tomcat, " + LocalDateTime.now();
}
}
mvn clean -U -DskipTests spring-boot:build-image
... [INFO] Successfully built image 'docker.io/library/webmvc:1.0-SNAPSHOT' [INFO] [INFO] ------------------------------------------------------------------------ [INFO] Reactor Summary for spring-native-tutorials 1.0-SNAPSHOT: [INFO] [INFO] spring-native-tutorials ............................ SUCCESS [ 1.786 s] [INFO] webmvc ............................................. SUCCESS [04:19 min] [INFO] ------------------------------------------------------------------------ [INFO] BUILD SUCCESS [INFO] ------------------------------------------------------------------------ [INFO] Total time: 04:25 min [INFO] Finished at: 2021-05-22T16:36:44+08:00 [INFO] ------------------------------------------------------------------------ [WARNING] The requested profile "nexus" could not be activated because it does not exist.
(base) zhaoqindeMBP:~ zhaoqin$ docker history webmvc:1.0-SNAPSHOT IMAGE CREATED CREATED BY SIZE COMMENT b8ff54813ae0 41 years ago 69B41 years ago 452kB41 years ago 2.51MB41 years ago 57.2MB41 years ago 1.4MB41 years ago 268B41 years ago 17.3MB
验证
docker run --rm -p 8080:8080 webmvc:1.0-SNAPSHOT
(base) zhaoqindeMBP:~ zhaoqin$ docker run --rm -p 8080:8080 webmvc:1.0-SNAPSHOT 2021-05-22 09:34:57.578 INFO 1 --- [ main] o.s.nativex.NativeListener : This application is bootstrapped with code generated with Spring AOT . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.5.0-SNAPSHOT) 2021-05-22 09:34:57.586 INFO 1 --- [ main] c.b.webmvc.WebmvcApplication : Starting WebmvcApplication using Java 1.8.0_292 on 3529ec458896 with PID 1 (/workspace/com.bolingcavalry.webmvc.WebmvcApplication started by cnb in /workspace) 2021-05-22 09:34:57.586 INFO 1 --- [ main] c.b.webmvc.WebmvcApplication : No active profile set, falling back to default profiles: default 2021-05-22 09:34:57.661 INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) May 22, 2021 9:34:57 AM org.apache.coyote.AbstractProtocol init INFO: Initializing ProtocolHandler ["http-nio-8080"] May 22, 2021 9:34:57 AM org.apache.catalina.core.StandardService startInternal INFO: Starting service [Tomcat] May 22, 2021 9:34:57 AM org.apache.catalina.core.StandardEngine startInternal INFO: Starting Servlet engine: [Apache Tomcat/9.0.46] May 22, 2021 9:34:57 AM org.apache.catalina.core.ApplicationContext log INFO: Initializing Spring embedded WebApplicationContext 2021-05-22 09:34:57.669 INFO 1 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 79 ms May 22, 2021 9:34:57 AM org.apache.coyote.AbstractProtocol start INFO: Starting ProtocolHandler ["http-nio-8080"] 2021-05-22 09:34:57.713 INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path '' 2021-05-22 09:34:57.713 INFO 1 --- [ main] c.b.webmvc.WebmvcApplication : Started WebmvcApplication in 0.178 seconds (JVM running for 0.19) 2021-05-22 09:34:57.713 INFO 1 --- [ main] o.s.b.a.ApplicationAvailabilityBean : Application availability state LivenessState changed to CORRECT 2021-05-22 09:34:57.714 INFO 1 --- [ main] o.s.b.a.ApplicationAvailabilityBean : Application availability state ReadinessState changed to ACCEPTING_TRAFFIC
CONTAINER ID NAME CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS 6ce6c66fb4de jovial_hertz 0.11% 30.69MiB / 3.844GiB 0.78% 1.49kB / 158B 4.31MB / 0B 18
(base) zhaoqindeMacBook-Pro:~ zhaoqin$ docker run --rm -P docker.io/bolingcavalry/hellojib:0.0.1-SNAPSHOT . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.1.6.RELEASE) 2021-05-22 11:13:28.121 INFO 1 --- [ main] c.b.hellojib.HellojibApplication : Starting HellojibApplication on ffb32e5b68b9 with PID 1 (/app/classes started by root in /) 2021-05-22 11:13:28.128 INFO 1 --- [ main] c.b.hellojib.HellojibApplication : No active profile set, falling back to default profiles: default 2021-05-22 11:13:30.000 INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http) 2021-05-22 11:13:30.054 INFO 1 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat] 2021-05-22 11:13:30.054 INFO 1 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.21] 2021-05-22 11:13:30.241 INFO 1 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2021-05-22 11:13:30.241 INFO 1 --- [ main] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2036 ms 2021-05-22 11:13:30.715 INFO 1 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor' 2021-05-22 11:13:31.103 INFO 1 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path '' 2021-05-22 11:13:31.110 INFO 1 --- [ main] c.b.hellojib.HellojibApplication : Started HellojibApplication in 3.618 seconds (JVM running for 4.297) 2021-05-22 11:13:48.866 INFO 1 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring DispatcherServlet 'dispatcherServlet' 2021-05-22 11:13:48.866 INFO 1 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Initializing Servlet 'dispatcherServlet' 2021-05-22 11:13:48.880 INFO 1 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : Completed initialization in 14 ms
CONTAINER ID NAME CPU % MEM USAGE / LIMIT MEM % NET I/O BLOCK I/O PIDS ffb32e5b68b9 eager_williamson 0.64% 356.3MiB / 3.844GiB 9.05% 3.46kB / 2.29kB 0B / 0B 31 6ce6c66fb4de jovial_hertz 0.11% 30.69MiB / 3.844GiB 0.78% 1.49kB / 158B 4.31MB / 0B 18
下载插件失败在实际操作过程中，经常会遇到maven插件或者docker镜像下载失败的情况，除了多试几次，您还可以考虑将项目放到github上去，借助github action在云端完成镜像构建，具体操作请参考《用GitHub Actions制作Docker镜像》 不用开发，直接体验
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