Docker 從入門到放棄（二）之Spring Boot

Docker 從入門到放棄（二）之Spring Boot

首先寫一個Spring Boot的項目，建立一個Maven的項目，可以用任何一種 IDE，最好推薦使用IDEA，因爲用起來不僅漂亮，而且方便。

項目結構

pom文件

<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.chen.web</groupId>
  <artifactId>docker-spring</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>docker-spring</name>
  <url>http://maven.apache.org</url>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.3.5.RELEASE</version>
    <relativePath/>
  </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>
  </dependencies>

  <build>
    <plugins>
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
      <!-- tag::plugin[] -->
      <plugin>
        <groupId>com.spotify</groupId>
        <artifactId>docker-maven-plugin</artifactId>
        <version>0.4.3</version>
        <configuration>
          <imageName>${docker.image.prefix}/${project.artifactId}</imageName>
          <dockerDirectory>src/main/docker</dockerDirectory>
          <resources>
            <resource>
              <targetPath>/</targetPath>
              <directory>${project.build.directory}</directory>
              <include>${project.build.finalName}.jar</include>
            </resource>
          </resources>
        </configuration>
      </plugin>
      <!-- end::plugin[] -->
    </plugins>
  </build>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <docker.image.prefix>waylau</docker.image.prefix>
    <spring.boot.version>1.3.3.RELEASE</spring.boot.version>
  </properties>
</project>

main文件

package com.chen.web;

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;

/**
 * Created by CHEN on 2016/8/20.
 */
@SpringBootApplication
@RestController
public class Application {

    @RequestMapping("/")
    public String home() {
        return "welcome to docker world";
    }

    public static void main(String[] args) {
        SpringApplication.run(Application.class,args);
    }

}

Dockerfile

FROM frolvlad/alpine-oraclejdk8:slim
VOLUME /tmp
ADD docker-spring-1.0-SNAPSHOT.jar app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

訪問

編譯：
mvn clean package

運行：（此處的docker-spring-1.0-SNAPSHOT.jar爲項目名）
java -jar docker-spring-1.0-SNAPSHOT.jar

訪問：
訪問http://localhost:8080/