SpringBoot Docker示例

1.准备好Docker.

2.准备SpringBoot项目。结构如下

3.pom文件增加如下内容：

 1 <docker.image.prefix>springio</docker.image.prefix>
　　
 2  <!-- tag::plugin[] -->
 3             <plugin>
 4                 <groupId>com.spotify</groupId>
 5                 <artifactId>dockerfile-maven-plugin</artifactId>
 6                 <version>1.4.9</version>
 7                 <configuration>
 8                     <repository>${docker.image.prefix}/${project.artifactId}</repository>
 9                 </configuration>
10             </plugin>
11             <!-- end::plugin[] -->
12 
13             <!-- tag::unpack[] -->
14             <plugin>
15                 <groupId>org.apache.maven.plugins</groupId>
16                 <artifactId>maven-dependency-plugin</artifactId>
17                 <executions>
18                     <execution>
19                         <id>unpack</id>
20                         <phase>package</phase>
21                         <goals>
22                             <goal>unpack</goal>
23                         </goals>
24                         <configuration>
25                             <artifactItems>
26                                 <artifactItem>
27                                     <groupId>${project.groupId}</groupId>
28                                     <artifactId>${project.artifactId}</artifactId>
29                                     <version>${project.version}</version>
30                                 </artifactItem>
31                             </artifactItems>
32                         </configuration>
33                     </execution>
34                 </executions>
35             </plugin>
36             <!-- end::unpack[] -->

../src/main/java/com/docker/dockerdemo/dockerdemo/DockerDemoApplication.java

如下

 1 package com.docker.dockerdemo.dockerdemo;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 import org.springframework.web.bind.annotation.RequestMapping;
 6 import org.springframework.web.bind.annotation.RestController;
 7 
 8 @SpringBootApplication
 9 @RestController
10 public class DockerDemoApplication {
11 
12     @RequestMapping("/")
13     public String home() {
14         return "Hello Docker World";
15     }
16 
17     public static void main(String[] args) {
18         SpringApplication.run(DockerDemoApplication.class, args);
19     }
20 
21 }

application.properties

server.port=8082

根目录创建Dockerfile文件

FROM openjdk:8-jdk-alpine
VOLUME /tmp
ARG JAR_FILE=target/
COPY ${JAR_FILE}/docker-demo-0.0.1.jar app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]