使用Dockerfile怎么部署一个SpringBoot项目

使用Dockerfile怎么部署一个SpringBoot项目？相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。

1、创建一个SpringBooot项目并且打成jar包

2、在Linux中创建一个文件夹，来做docker测试

[root@izwz90lvzs7171wgdhul8az ~]# mkdir /root/docker_test

3、将jar包上传到Linux中

创建存放jar包的文件夹

[root@izwz90lvzs7171wgdhul8az docker_test]# mkdir /root/docker_test/jar

然后利用XShell上传jar包到上面的文件夹中

4、编写Dockerfile文件

# 基于java镜像创建新镜像FROM java:8# 作者MAINTAINER Howinfun# 将jar包添加到容器中并更名为app.jarADD jar/app.jar /root/docker_test/app.jar# 运行jar包ENTRYPOINT ["nohup","java","-jar","/root/docker_test/app.jar","&"]

注意：ADD 、 COPY 指令用法一样，唯一不同的是 ADD 支持将归档文件（tar, gzip, bzip2, etc）做提取和解压操作。还有需要注意的是，COPY 指令需要复制的目录一定要放在 Dockerfile 文件的同级目录下。

5、制作镜像

[root@izwz90lvzs7171wgdhul8az docker_test]# docker build -t sbdemo .

命令参数：

-t：指定新镜像名
.：表示Dockfile在当前路径

如果我们的 Dockerfile 文件路径不在这个目录下，或者有另外的文件名，我们可以通过 -f 选项单独给出 Dockerfile 文件的路径

[root@izwz90lvzs7171wgdhul8az docker_test]# docker build -t sbdemo -f /root/docker_test/Dockerfile /root/docker_test/

命令参数：

-f：第一个参数是Dockerfile的路径 第二个参数是Dockerfile所在文件夹制作完成后通过docker images命令查看我们制作的镜像：

[root@izwz90lvzs7171wgdhul8az docker_test]# docker images | grep sbdemosbdemo       latest       7efac46ef997    4 hours ago     686MB

6、启动容器

[root@izwz90lvzs7171wgdhul8az docker_test]# docker run -d -p 8888:8888 --name mysbdemo sbdemo:latest

命令参数：

-d：后台运行
-p：公开指定端口号
--name：给容器命名

启动后可通过docker ps查看正在运行的容器：

[root@izwz90lvzs7171wgdhul8az docker_test]# docker psCONTAINER ID    IMAGE        COMMAND         CREATED       STATUS       PORTS          NAMES5096c8c7b36f    sbdemo       "nohup java -jar /ro??  4 seconds ago    Up 2 seconds    0.0.0.0:8888->8888/tcp  mysbdemo

7、查看容器启动日志

我们可以通过 docker logs 查看指定容器的日志：

[root@izwz90lvzs7171wgdhul8az docker_test]# docker logs mysbdemo .  ____     _      __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot ::    (v2.1.6.RELEASE)2019-10-11 02:10:46.264 INFO 1 --- [      main] com.hyf.DatabaseApplication       : Starting DatabaseApplication v0.0.1-SNAPSHOT on 6d85ac5d8751 with PID 1 (/root/docker_test/app.jar started by root in /)2019-10-11 02:10:46.267 DEBUG 1 --- [      main] com.hyf.DatabaseApplication       : Running with Spring Boot v2.1.6.RELEASE, Spring v5.1.8.RELEASE2019-10-11 02:10:46.268 INFO 1 --- [      main] com.hyf.DatabaseApplication       : No active profile set, falling back to default profiles: default2019-10-11 02:10:49.139 WARN 1 --- [      main] o.m.s.mapper.ClassPathMapperScanner   : Skipping MapperFactoryBean with name 'bookMapper' and 'com.hyf.mapper.BookMapper' mapperInterface. Bean already defined with the same name!2019-10-11 02:10:49.139 WARN 1 --- [      main] o.m.s.mapper.ClassPathMapperScanner   : No MyBatis mapper was found in '[com.hyf]' package. Please check your configuration.2019-10-11 02:10:49.246 INFO 1 --- [      main] .s.d.r.c.RepositoryConfigurationDelegate : Multiple Spring Data modules found, entering strict repository configuration mode!2019-10-11 02:10:49.257 INFO 1 --- [      main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data repositories in DEFAULT mode.2019-10-11 02:10:49.328 INFO 1 --- [      main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 39ms. Found 0 repository interfaces.2019-10-11 02:10:50.345 INFO 1 --- [      main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$2c6b335] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)2019-10-11 02:10:51.255 INFO 1 --- [      main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8888 (http)2019-10-11 02:10:51.359 INFO 1 --- [      main] o.apache.catalina.core.StandardService  : Starting service [Tomcat]2019-10-11 02:10:51.359 INFO 1 --- [      main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.21]2019-10-11 02:10:51.778 INFO 1 --- [      main] o.a.c.c.C.[Tomcat].[localhost].[/]    : Initializing Spring embedded WebApplicationContext2019-10-11 02:10:51.779 INFO 1 --- [      main] o.s.web.context.ContextLoader      : Root WebApplicationContext: initialization completed in 5104 ms2019-10-11 02:10:54.164 INFO 1 --- [      main] o.s.s.concurrent.ThreadPoolTaskExecutor : Initializing ExecutorService 'applicationTaskExecutor'2019-10-11 02:10:56.081 INFO 1 --- [      main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8888 (http) with context path ''2019-10-11 02:10:56.090 INFO 1 --- [      main] com.hyf.DatabaseApplication       : Started DatabaseApplication in 11.49 seconds (JVM running for 12.624)

8、访问接口

容器启动后，我们尝试使用postman或者其他http工具去访问部署在容器中的应用接口。

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