创建一个简单的springboot项目
一、在 pom.xml 中 ，使用 Spring Boot 2.2.10 相关依赖
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<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.10.RELEASE</version></parent> |
二、添加 web 和测试依赖
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<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency></dependencies> |
三、创建一个 DockerController，在其中有一个hello()方法，访问时返回：hello,nihao
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@RestControllerpublic class DockerController { @RequestMapping("/hello") public String hello() { return "hello,nihao"; }} |
四、启动类
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@SpringBootApplicationpublic class DockerApplication { public static void main(String[] args) { SpringApplication.run(DockerApplication.class, args); }} |
添加完毕后启动项目，启动成功后浏览器访问：http://localhost:8080/hello，页面返回：hello,nihao，说明 Spring Boot 项目配置正常。
使用 Docker 部署 Spring Boot 项目
一、将项目打成jar包，拷贝到服务器上，测试一下
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[root@jiangwang springbootDemo]# lsdemo-0.0.1-SNAPSHOT.jar Dockerfile[root@jiangwang springbootDemo]# java -jar demo-0.0.1-SNAPSHOT.jar . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.2.10.RELEASE)2021-03-18 14:49:18.241 INFO 12886 --- [ main] com.example.demo.DemoApplication : Starting DemoApplication v0.0.1-SNAPSHOT on jiangwang with PID 12886 (/home/springbootDemo/demo-0.0.1-SNAPSHOT.jar started by root in /home/springbootDemo)2021-03-18 14:49:18.244 INFO 12886 --- [ main] com.example.demo.DemoApplication : No active profile set, falling back to default profiles: default2021-03-18 14:49:19.924 INFO 12886 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)2021-03-18 14:49:19.938 INFO 12886 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]2021-03-18 14:49:19.938 INFO 12886 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.38]2021-03-18 14:49:20.013 INFO 12886 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext2021-03-18 14:49:20.014 INFO 12886 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 1657 ms2021-03-18 14:49:20.321 INFO 12886 --- [ main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'2021-03-18 14:49:20.520 INFO 12886 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8080 (http) with context path ''2021-03-18 14:49:20.523 INFO 12886 --- [ main] com.example.demo.DemoApplication : Started DemoApplication in 2.899 seconds (JVM running for 3.369) |
二、看到 Spring Boot 的启动日志后表明环境配置没有问题，编辑Dockerfile文件：
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FROM java:8COPY *.jar /app.jarCMD ["--server.port=8080"]EXPOSE 8080ENTRYPOINT ["java","-jar","/app.jar"] |
三、接下来我们使用 Dockerfile 构建镜像：
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## 构建镜像[root@jiangwang springbootDemo]# docker build -t springboot-demo .Sending build context to Docker daemon 17.72MBStep 1/5 : FROM java:8 ---> d23bdf5b1b1bStep 2/5 : COPY *.jar /app.jar ---> f4d6aeabd3f0Step 3/5 : CMD ["--server.port=8080"] ---> Running in a6311f7cf7b5Removing intermediate container a6311f7cf7b5 ---> d8117b10cefaStep 4/5 : EXPOSE 8080 ---> Running in ae180be637bbRemoving intermediate container ae180be637bb ---> f16702c75ab6Step 5/5 : ENTRYPOINT ["java","-jar","/app.jar"] ---> Running in fafa00625666Removing intermediate container fafa00625666 ---> d4c3e225699dSuccessfully built d4c3e225699dSuccessfully tagged springboot-demo:latest |
四、运行镜像：
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# 运行镜像[root@jiangwang springbootDemo]# docker run -d -p 39005:8080 --name my-springboot springboot-demo7ac35852cb91cb10612cd28fdbe7c50c7c59df4cccf19b2f1d30dcabbfe501f4[root@jiangwang springbootDemo]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES7ac35852cb91 springboot-demo "java -jar /app.jar …" 33 seconds ago Up 32 seconds 0.0.0.0:39005->8080/tcp my-springboot[root@jiangwang springbootDemo]# curl localhost:39005/hellohello,nihao[root@jiangwang springbootDemo]# |
五、浏览器输入外网网址访问一下:
这里你的外网39005端口首先要开放了，可以去安全组设置
说明使用 Docker 部署 Spring Boot 项目成功！
到此这篇关于使用Docker部署Spring Boot项目的实现步骤的文章就介绍到这了,更多相关Docker部署Spring Boot内容请搜索服务器之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持服务器之家！
原文链接：https://juejin.cn/post/6941155134026022920
