Spring基础：快速入门spring boot（6）：用docker进行Build/Ship/Run

本篇文章将在将介绍如何使用spring boot的docker-maven-plugin插件生成镜像以及推送到docker库中以及运行确认。

准备

JDK和Maven以及Docker是需要的，本文中使用CentOS7.2，因为Docker也支持windows，所以OS不限于linux。相关版本如下：

软件	版本	安装
JDK	1.8	http://blog.csdn.net/liumiaocn/article/details/53512956
Maven	3.3.9	http://blog.csdn.net/liumiaocn/article/details/53512956
Docker	1.10	yum install docker; systemctl start docker

创建Maven项目

Maven坐标信息如下：

项目	详细
groupId	com.liumiaocn.springboot.demo
artifactId	dockerdemo
version=0.0.1	SNAPSHOT

创建命令：设定interactiveMode为false，需要询问的设定Maven将直接使用缺省值。

mvn archetype:generate -DgroupId=com.liumiaocn.springboot.demo -DartifactId=dockerdemo -Dversion=0.0.1-SNAPSHOT -DinteractiveMode=false

创建时需要下载archetype-catalog.xml，此文件较大，目前已经5M以上了，一般因此会较慢，可以在命令行中加入 -X选项察看DEBUG信息已确认原因

创建详细参照

[root@liumiaocn demo]# ll
total 0
[root@liumiaocn demo]# mvn archetype:generate -DgroupId=com.liumiaocn.springboot.demo -DartifactId=dockerdemo -Dversion=0.0.1-SNAPSHOT -DinteractiveMode=false
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Maven Stub Project (No POM) 1
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] >>> maven-archetype-plugin:2.4:generate (default-cli) > generate-sources @ standalone-pom >>>
[INFO]
[INFO] <<< maven-archetype-plugin:2.4:generate (default-cli) < generate-sources @ standalone-pom <<<
[INFO]
[INFO] --- maven-archetype-plugin:2.4:generate (default-cli) @ standalone-pom ---
[INFO] Generating project in Batch mode
[INFO] No archetype defined. Using maven-archetype-quickstart (org.apache.maven.archetypes:maven-archetype-quickstart:1.0)
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/archetypes/maven-archetype-quickstart/1.0/maven-archetype-quickstart-1.0.jar Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/archetypes/maven-archetype-quickstart/1.0/maven-archetype-quickstart-1.0.jar (5 KB at 1.0 KB/sec)
Downloading: https://repo.maven.apache.org/maven2/org/apache/maven/archetypes/maven-archetype-quickstart/1.0/maven-archetype-quickstart-1.0.pom Downloaded: https://repo.maven.apache.org/maven2/org/apache/maven/archetypes/maven-archetype-quickstart/1.0/maven-archetype-quickstart-1.0.pom (703 B at 1.1 KB/sec)
[INFO] ----------------------------------------------------------------------------
[INFO] Using following parameters for creating project from Old (1.x) Archetype: maven-archetype-quickstart:1.0
[INFO] ----------------------------------------------------------------------------
[INFO] Parameter: basedir, Value: /root/demo
[INFO] Parameter: package, Value: com.liumiaocn.springboot.demo
[INFO] Parameter: groupId, Value: com.liumiaocn.springboot.demo
[INFO] Parameter: artifactId, Value: dockerdemo
[INFO] Parameter: packageName, Value: com.liumiaocn.springboot.demo
[INFO] Parameter: version, Value: 0.0.1-SNAPSHOT
[INFO] project created from Old (1.x) Archetype in dir: /root/demo/dockerdemo
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 08:19 min
[INFO] Finished at: 2017-01-18T20:34:25-05:00
[INFO] Final Memory: 13M/50M
[INFO] ------------------------------------------------------------------------
[root@liumiaocn demo]# ll
total 0
drwxr-xr-x. 3 root root 30 Jan 18 20:34 dockerdemo
[root@liumiaocn demo]#

创建后的结构

修改App.java

此时已经自动给生成了App.java文件，我们将其修改成一个最简单的Web应用的HelloWorld。修改后如下：

package com.liumiaocn.springboot.demo;

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
@SpringBootApplication
public class App {
@RequestMapping("/")
public String Hello(){
return "Hello, Spring Boot...";
}
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}

修改Pom

修改前Pom

<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.liumiaocn.springboot.demo</groupId>
<artifactId>dockerdemo</artifactId>
<packaging>jar</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>dockerdemo</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

加入spring boot所需相关内容，修改后如下

<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.liumiaocn.springboot.demo</groupId>
<artifactId>dockerdemo</artifactId>
<packaging>jar</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>dockerdemo</name>
<url>http://maven.apache.org</url>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

<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>

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

编译打包

使用如下maven命令进行编译打包

项目	详细
命令	mvn clean package

启动确认

使用如下方式启动该服务

项目	详细
命令	cd target; java -jar dockerdemo-0.0.1-SNAPSHOT.jar

画面确认

修正pom的build部分

<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion>
<groupId>com.liumiaocn.springboot.demo</groupId>
<artifactId>dockerdemo</artifactId>
<packaging>jar</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>dockerdemo</name>
<url>http://maven.apache.org</url>

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>

<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>

<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>

<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>

<plugin>
<groupId>com.spotify</groupId>
<artifactId>docker-maven-plugin</artifactId>
<configuration>
<imageName>springboot-docker-demo</imageName>
<forceTags>true</forceTags>
<imageTags>
<imageTag>latest</imageTag>
</imageTags>
<baseImage>java:alpine</baseImage>
<entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
<resources>
<resource>
<targetPath>/</targetPath>
<directory>${project.build.directory}</directory>
<include>${project.build.finalName}.jar</include>
</resource>
</resources>
</configuration>
</plugin>
</plugins>
</build>
</project>

生成docker镜像

使用mvn clean package docker:build生成镜像，注意package命令要先行。另外如果想直接push到私库或者dockerhub上，事前docker login之后，加上-DpushImage即可。

[root@liumiaocn dockerdemo]# mvn clean package docker:build
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for com.liumiaocn.springboot.demo:dockerdemo:jar:0.0.1-SNAPSHOT
[WARNING] 'build.plugins.plugin.version' for com.spotify:docker-maven-plugin is missing. @ line 45, column 15
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building dockerdemo 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.6.1:clean (default-clean) @ dockerdemo ---
[INFO] Deleting /root/demo/dockerdemo/target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ dockerdemo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /root/demo/dockerdemo/src/main/resources
[INFO] skip non existing resourceDirectory /root/demo/dockerdemo/src/main/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ dockerdemo ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /root/demo/dockerdemo/target/classes
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) @ dockerdemo ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /root/demo/dockerdemo/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:testCompile (default-testCompile) @ dockerdemo ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to /root/demo/dockerdemo/target/test-classes
[INFO]
[INFO] --- maven-surefire-plugin:2.18.1:test (default-test) @ dockerdemo ---
[INFO] Surefire report directory: /root/demo/dockerdemo/target/surefire-reports

-------------------------------------------------------
T E S T S
-------------------------------------------------------
Running com.liumiaocn.springboot.demo.AppTest
Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.014 sec - in com.liumiaocn.springboot.demo.AppTest

Results :

Tests run: 1, Failures: 0, Errors: 0, Skipped: 0

[INFO]
[INFO] --- maven-jar-plugin:2.6:jar (default-jar) @ dockerdemo ---
[INFO] Building jar: /root/demo/dockerdemo/target/dockerdemo-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:1.4.2.RELEASE:repackage (default) @ dockerdemo ---
[INFO]
[INFO] --- docker-maven-plugin:0.4.13:build (default-cli) @ dockerdemo ---
[INFO] Copying /root/demo/dockerdemo/target/dockerdemo-0.0.1-SNAPSHOT.jar -> /root/demo/dockerdemo/target/docker/dockerdemo-0.0.1-SNAPSHOT.jar
[INFO] Building image springboot-docker-demo
Step 1 : FROM java:alpine
---> e40ba8c51bb2
Step 2 : ADD /dockerdemo-0.0.1-SNAPSHOT.jar //
---> ed34815e725e
Removing intermediate container 8784da544f9e
Step 3 : ENTRYPOINT java -jar /dockerdemo-0.0.1-SNAPSHOT.jar
---> Running in 1381f35250e1
---> e9260209838b
Removing intermediate container 1381f35250e1
Successfully built e9260209838b
[INFO] Built springboot-docker-demo
[INFO] Tagging springboot-docker-demo with latest
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 45.429 s
[INFO] Finished at: 2017-01-18T21:05:29-05:00
[INFO] Final Memory: 36M/88M
[INFO] ------------------------------------------------------------------------
[root@liumiaocn dockerdemo]#

确认docker镜像

[root@liumiaocn dockerdemo]# docker images |grep springboot-docker-demo
springboot-docker-demo                                   latest              285c2351de9b        About a minute ago   145 MB
[root@liumiaocn dockerdemo]#

运行docker镜像

将该镜像运行起来，把对外port设定为9090

项目	详细
命令	docker run -p 9090:8080 springboot-docker-demo

结果确认