創建一個簡單的springboot項目
一、在 pom.xml 中 ，使用 Spring Boot 2.2.10 相關依賴
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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 和測試依賴
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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、創建一個 DockerController，在其中有一個hello()方法，訪問時返回：hello,nihao
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@RestControllerpublic class DockerController { @RequestMapping("/hello") public String hello() { return "hello,nihao"; }} |
四、啟動類
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@SpringBootApplicationpublic class DockerApplication { public static void main(String[] args) { SpringApplication.run(DockerApplication.class, args); }} |
添加完畢后啟動項目，啟動成功后瀏覽器訪問：http://localhost:8080/hello，頁面返回：hello,nihao，說明 Spring Boot 項目配置正常。
使用 Docker 部署 Spring Boot 項目
一、將項目打成jar包，拷貝到服務器上，測試一下
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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 的啟動日志后表明環境配置沒有問題，編輯Dockerfile文件：
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FROM java:8COPY *.jar /app.jarCMD ["--server.port=8080"]EXPOSE 8080ENTRYPOINT ["java","-jar","/app.jar"] |
三、接下來我們使用 Dockerfile 構建鏡像：
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## 構建鏡像[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、運行鏡像：
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# 運行鏡像[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、瀏覽器輸入外網網址訪問一下:
這里你的外網39005端口首先要開放了，可以去安全組設置
說明使用 Docker 部署 Spring Boot 項目成功！
到此這篇關于使用Docker部署Spring Boot項目的實現步驟的文章就介紹到這了,更多相關Docker部署Spring Boot內容請搜索服務器之家以前的文章或繼續瀏覽下面的相關文章希望大家以后多多支持服務器之家！
原文鏈接：https://juejin.cn/post/6941155134026022920
