Docker构建SpringBoot镜像

一、使用STS构建springBoot项目

项目结构

├─src│  ├─main│  │  ├─java│  │  │  └─com│  │  │      └─example│  │  └─resources│  │      ├─static│  │      └─templates│  └─test│      └─java│          └─com│              └─example└─target

pom.xml

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>com.example</groupId>    <artifactId>springboot</artifactId>    <version>1.0</version>    <packaging>jar</packaging>    <name>SpringBoot</name>    <description>Demo project for Spring Boot</description>    <parent>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-parent</artifactId>        <version>1.5.1.RELEASE</version>        <relativePath/> <!-- lookup parent from repository -->    </parent>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>        <java.version>1.8</java.version>    </properties>    <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>    <build>        <plugins>            <plugin>                <groupId>org.springframework.boot</groupId>                <artifactId>spring-boot-maven-plugin</artifactId>            </plugin>        </plugins>    </build></project>

Application.java

package com.example;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestController@SpringBootApplicationpublic class Application {    @RequestMapping("/")    public String index(){        return "Hello Docker .";    }    public static void main(String[] args) {        SpringApplication.run(Application.class, args);    }}

使用maven打包项目,在target目录下得到springboot-1.0.jar

mvn clean pakcage //先清理再进行打包target/springboot-1.0.jar

run项目

  .   ____          _            __ _ _ /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/  ___)| |_)| | | | | || (_| |  ) ) ) )  '  |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot ::        (v1.5.1.RELEASE)......2017-02-22 13:51:45.408  INFO 1588 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)2017-02-22 13:51:45.423  INFO 1588 --- [           main] com.example.Application                  : Started Application in 2.004 seconds (JVM running for 2.622)2017-02-22 13:51:58.432  INFO 1588 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'2017-02-22 13:51:58.433  INFO 1588 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started2017-02-22 13:51:58.452  INFO 1588 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 19 ms

地址栏输入http://localhost:8080/, 得到如下结果,项目构建成功。

Hello Docker .

二、构建Docker镜像,启动Docker容器

上传springboot-1.0.jar到装有Docker服务的linux系统,这里我用的是ubutun14.04

开始编写Dockerfile文件,

vi Dockerfile

Dockerfile的内容，保存退出

FROM hub.c.163.com/xbingo/jdk8ADD ./springboot-1.0.jar  /springboot.jarEXPOSE 8080CMD ["java","-jar","/springboot.jar"]

ll查看

root@ubuntu:/data/test# lltotal 14004drwxr-xr-x 2 root root     4096 Feb 21 22:38 ./drwxr-xr-x 5 root root     4096 Feb 21 22:20 ../-rw-r--r-- 1 root root      124 Feb 21 22:25 Dockerfile-rw-r--r-- 1 root root 14326404 Feb 21 22:20 springboot-1.0.jarroot@ubuntu:/data/test#

构建镜像,别忘记后面的”.”,表示Dockerfile的文件位置

root@ubuntu:/data/test# docker build -t springboot:1.0 .Sending build context to Docker daemon 14.33 MBStep 1/4 : FROM hub.c.163.com/xbingo/jdk8 ---> 3273714c9663Step 2/4 : ADD ./springboot-1.0.jar /springboot.jar ---> 556a8eba0f6aRemoving intermediate container 8d6a88c466e2Step 3/4 : EXPOSE 8080 ---> Running in 327fc70b5fa9 ---> e5e6c6b29983Removing intermediate container 327fc70b5fa9Step 4/4 : CMD java -jar /springboot.jar ---> Running in 4a9c41547c8c ---> c745ff82ccacRemoving intermediate container 4a9c41547c8cSuccessfully built c745ff82ccacroot@ubuntu:/data/test# 

查看镜像列表,已生成springboot镜像

root@ubuntu:/data/test# docker imagesREPOSITORY                         TAG                 IMAGE ID            CREATED             SIZEspringboot                         1.0                 c745ff82ccac        5 minutes ago       182 MBroot@ubuntu:/data/test# 

启动容器,并查看运行容器列表

root@ubuntu:/data/test# docker run -d -p 8080:8080 --name springboot springboot:1.0840e8f08bdbbf10f3050c4c7ec38ba7c1ce90378b0f31a3a8cc7a1d2ddf66119root@ubuntu:/data/test# docker psCONTAINER ID        IMAGE                    COMMAND                  CREATED             STATUS              PORTS                                       NAMES840e8f08bdbb        springboot:1.0           "java -jar /spring..."   4 seconds ago       Up 3 seconds        0.0.0.0:8080->8080/tcp                      springboot

打开宿主主机的浏览器:输入http://localhost:8080,预览效果

要想查看Docker容器日志,显示日志结果和第一步的启动日志一致

docker logs springboot