前面我們構建了jdk執行環境的映象，這裡我們只需要將springboot專案打包到該映象中，形成一個新的映象springboot-docker，到時候，利用這個映象啟動容器。再做埠對映，就可以訪問我們部署在docker中的springboot專案了。

1、構建springboot專案，編寫pom.xml檔案。

<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.xxx</groupId>
  <artifactId>springboot-docker</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>springboot-docker</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>
  <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
     <version>2.0.4.RELEASE</version>
  </parent>
  <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>
          </plugin>
          <plugin>
              <groupId>com.spotify</groupId>
              <artifactId>docker-maven-plugin</artifactId>
              <version>1.1.1</version>
              <configuration>
                 <imageName>local/${project.artifactId}</imageName>
                 <dockerDirectory>src/main/docker</dockerDirectory>
                 <resources>
                    <resource>
                       <targetPath>/</targetPath>
                       <directory>${project.build.directory}</directory>
                       <include>${project.build.finalName}.jar</include>
                    </resource>
                 </resources>
              </configuration>
          </plugin>
     </plugins>
  </build>
</project>
 

專案結構：

2、編寫App.java啟動類，該啟動類還兼顧controller的角色。

package com.xxx.springbootwithdocker;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@SpringBootApplication
@RestController
public class App{
    public static void main( String[] args ){
    	SpringApplication.run(App.class, args);
    }
    
    @GetMapping("/")
    public String index(){
    	return "{\"id\":\"1001\",\"content\":\"this is a docker\"}";
    }
    
}
 

 3、準備打包的Dockerfile檔案。src/main目錄下新建docker資料夾，並新建Dockerfile檔案，檔案內容如下：

FROM local/centos7-jdk8
VOLUME /tmp
ADD springboot-docker-0.0.1-SNAPSHOT.jar app.jar
RUN sh -c 'touch /app.jar'
ENV JAVA_OPTS=""
ENTRYPOINT [ "sh", "-c", "java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar" ]

4、編譯打包映象。gitshell命令列切換到springboot-docker專案目錄下，執行mvn clean package docker:build

$ mvn clean package docker:build
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building springboot-docker 0.0.1-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:3.0.0:clean (default-clean) @ springboot-docker ---
[INFO] Deleting d:\git\GameWorld\Service\springboot-docker\target
[INFO]
[INFO] --- maven-resources-plugin:3.0.2:resources (default-resources) @ springboot-docker ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory d:\git\GameWorld\Service\springboot-docker\src\main\resources
[INFO] skip non existing resourceDirectory d:\git\GameWorld\Service\springboot-docker\src\main\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.7.0:compile (default-compile) @ springboot-docker ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to d:\git\GameWorld\Service\springboot-docker\target\classes
[INFO]
[INFO] --- maven-resources-plugin:3.0.2:testResources (default-testResources) @ springboot-docker ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory d:\git\GameWorld\Service\springboot-docker\src\test\resources
[INFO]
[INFO] --- maven-compiler-plugin:3.7.0:testCompile (default-testCompile) @ springboot-docker ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.21.0:test (default-test) @ springboot-docker ---
[INFO] No tests to run.
[INFO]
[INFO] --- maven-jar-plugin:3.0.2:jar (default-jar) @ springboot-docker ---
[INFO] Building jar: d:\git\GameWorld\Service\springboot-docker\target\springboot-docker-0.0.1-SNAPSHOT.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:2.0.4.RELEASE:repackage (default) @ springboot-docker ---
[INFO]
[INFO] --- docker-maven-plugin:1.1.1:build (default-cli) @ springboot-docker ---
[INFO] Using authentication suppliers: [ConfigFileRegistryAuthSupplier]
[INFO] Copying d:\git\GameWorld\Service\springboot-docker\target\springboot-docker-0.0.1-SNAPSHOT.jar -> d:\git\GameWorld\Service\springboot-docker\ta
rget\docker\springboot-docker-0.0.1-SNAPSHOT.jar
[INFO] Copying src\main\docker\Dockerfile -> d:\git\GameWorld\Service\springboot-docker\target\docker\Dockerfile
[INFO] Building image local/springboot-docker
Step 0 : FROM local/centos7-jdk8
 ---> 526ac3c7d9bc
Step 1 : VOLUME /tmp
 ---> Running in 3e280a0ada9a
 ---> a5413101d40c
Removing intermediate container 3e280a0ada9a
Step 2 : ADD springboot-docker-0.0.1-SNAPSHOT.jar app.jar
 ---> fd445c67de28
Removing intermediate container 6c88bd797017
Step 3 : RUN sh -c 'touch /app.jar'
 ---> Running in 3848c1b364fe
 ---> 4a5ce0df766f
Removing intermediate container 3848c1b364fe
Step 4 : ENV JAVA_OPTS ""
 ---> Running in 7593b0bf0660
 ---> e91748a27f6c
Removing intermediate container 7593b0bf0660
Step 5 : ENTRYPOINT sh -c java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar
 ---> Running in 7f3b41d42b33
 ---> f6ee77cee236
Removing intermediate container 7f3b41d42b33
Successfully built f6ee77cee236
[INFO] Built local/springboot-docker
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 30.636 s
[INFO] Finished at: 2018-09-26T10:58:38+08:00
[INFO] Final Memory: 51M/458M
[INFO] ------------------------------------------------------------------------

構建成功，我們可以檢視映象，啟動容器。

啟動成功，需要做一個埠對映，我們就可以通過windows本機上的瀏覽器訪問springboot專案。

訪問 http://localhost:18080/

至此，springboot與docker整合，已經全部完成，整個過程基本都是在配置docker映象，構建docker映象。