谷歌助力，快速实现 Java 应用容器化(3)

此外，如果”登录失败，未授权”，需要通过 docker login 登录鉴权一下。此外，更好的做法是，你可以考虑在Maven 中放置凭据。

<settings> 
  ... 
  <servers> 
    ... 
        <server> 
          <id>registry.cn-hangzhou.aliyuncs.com</id> 
          <username>你的阿里云账号</username> 
          <password>你的阿里云密码</password> 
        </server> 
  </servers> 
</settings> 

最后，执行完成后，我们可以在阿里云镜像仓库获取镜像。

大功告成，现在，我们来验证一把。我们通过 docker pull 拉取镜像，并运行。

docker pull registry.cn-hangzhou.aliyuncs.com/lianggzone/jib-helloworld:v1 
docker run --name jib-helloworld -it registry.cn-hangzhou.aliyuncs.com/lianggzone/jib-helloworld:v1 /bin/bash 

执行结果，如下所示。

2. 构建一个 SpringBoot 的可运行 Jar

我们来一个复杂一些的项目，构建一个 SpringBoot 的项目。现在，我们首先需要搭建一个工程，并创建一个启动类。

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

同时，需要一个 Web 的接口。

@RestController 
public class WebController { 
    @RequestMapping("/blog") 
    public String index() { 
        return "http://blog.720ui.com"; 
    } 
} 

紧接着，我们再创建一个 pom.xml 文件。

<?xml version="1.0" encoding="UTF-8"?> 
<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> 
 
    <parent> 
        <groupId>org.springframework.boot</groupId> 
        <artifactId>spring-boot-starter-parent</artifactId> 
        <version>2.1.2.RELEASE</version> 
    </parent> 
 
    <groupId>com.lianggzone.sample.lib</groupId> 
    <artifactId>springboot-samples</artifactId> 
    <version>0.1</version> 
    <packaging>jar</packaging> 
    <name>springboot-samples</name> 
 
    <dependencies> 
        <dependency> 
            <groupId>org.springframework.boot</groupId> 
            <artifactId>spring-boot-starter-web</artifactId> 
        </dependency> 
    </dependencies> 
 
    <properties> 
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
        <jib-maven-plugin.version>1.0.2</jib-maven-plugin.version> 
        <maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version> 
    </properties> 
 
    <build> 
        <plugins> 
            <plugin> 
                <groupId>org.apache.maven.plugins</groupId> 
                <artifactId>maven-compiler-plugin</artifactId> 
                <version>${maven-compiler-plugin.version}</version> 
                <configuration> 
                    <source>1.8</source> 
                    <target>1.8</target> 
                </configuration> 
            </plugin> 
            <!-- Jib --> 
            <plugin> 
                <groupId>com.google.cloud.tools</groupId> 
                <artifactId>jib-maven-plugin</artifactId> 
                <version>${jib-maven-plugin.version}</version> 
                <configuration> 
                    <from> 
                        <image>registry.cn-hangzhou.aliyuncs.com/lianggzone/oracle_java8</image> 
                    </from> 
                    <to> 
                        <image>registry.cn-hangzhou.aliyuncs.com/lianggzone/jib-springboot:v1</image> 
                    </to> 
                    <container> 
                        <jvmFlags> 
                            <jvmFlag>-Xms512m</jvmFlag> 
                            <jvmFlag>-Xdebug</jvmFlag> 
                        </jvmFlags> 
                    </container> 
                </configuration> 
                <executions> 
                    <execution> 
                        <phase>package</phase> 
                        <goals> 
                            <goal>build</goal> 
                        </goals> 
                    </execution> 
                </executions> 
            </plugin> 
        </plugins> 
    </build> 
</project> 

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