spring boot hello and docker

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主要是想试下spring boot运行在docker里的感觉，小试牛刀：）

这是原文，参考一下： https://spring.io/guides/gs/spring-boot-docker/

1. 环境

win10, eclipse, mvn, centos 7.3(vm), docker 1.12

即开发环境在win10下， docker环境在centos vm里

2. project图

两个代码文件： Application.java, HelloController.java

一个Dockerfile, 把生成的jar build成镜像

一个pom.xml, 这个不解释

3. 源码文件:

pom.xml

<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>SpringbootDocker</groupId>

    <artifactId>ex.springbootdocker</artifactId>

    <packaging>jar</packaging>

    <version>0.0.1</version>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.5.6.RELEASE</version>

    </parent>

    <properties>

        <java.version>1.8</java.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

                <configuration>

                    <fork>true</fork>

                </configuration>

            </plugin>

            <plugin>

                <groupId>com.spotify</groupId>

                <artifactId>dockerfile-maven-plugin</artifactId>

                <version>1.3.4</version>

                <configuration>

                    <repository>${docker.image.prefix}/${project.artifactId}</repository>

                </configuration>

            </plugin>

        </plugins>

    </build>

</project>

Application.java

package ex.springbootdocker;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication

public class Application {

    public static void main(String[] args) {

        SpringApplication.run(Application.class, args);

    }

}

HelloController.java

package ex.springbootdocker;

import org.springframework.web.bind.annotation.PathVariable;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestMethod;

import org.springframework.web.bind.annotation.RestController;

@RestController

public class HelloController {

    @RequestMapping(value="/hello/{name}", method=RequestMethod.GET)

    public String sayHello(@PathVariable("name") String name) {

        return "hello, " + name;

    }

}

Dockerfile

FROM openjdk:8-jdk-alpine

VOLUME /tmp

ADD ex.springbootdocker-0.0.1.jar app.jar

ENV JAVA_OPTS=""

ENTRYPOINT exec java $JAVA_OPTS -jar /app.jar

4. 说明

1). 我的eclipse没有自动生成jar, 只能mvn package

2). 将生成的jar 和 Dockerfile 复制到 centos vm里，比如/opt/docker

3). 生成镜像

4). 运行

再来一个firefox的图：

巴特西

spring boot hello and docker

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