Springboot（十二）构建docker images镜像

小咪咪 2022-05-21 00:54 216阅读 0赞

##### 前言： #####

把springboot工程，放在docker容器中运行，有很多种方法，本博客用maven插件与Dockerfile构建。

##### 代码：    #####

首先构架一个springboot工程

pom.xml如下：docker-maven-plugin为构建docker所需的maven插件

<?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>
    
        <groupId>com.xhx.springboot</groupId>
        <artifactId>springboot19</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <packaging>jar</packaging>
    
        <name>springboot19</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-parent</artifactId>
            <version>2.0.2.RELEASE</version>
            <relativePath/> 
        </parent>
    
        <properties>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <java.version>1.8</java.version>
            <docker.image.prefix>xuhaixing</docker.image.prefix>
        </properties>
    
        <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>
                <plugin>
                    <groupId>com.spotify</groupId>
                    <artifactId>docker-maven-plugin</artifactId>
                    <version>1.0.0</version>
                    <configuration>
                        <imageName>${docker.image.prefix}/${project.artifactId}:${project.version}</imageName>
                        <dockerHost>http://192.168.94.151:2375</dockerHost>
                        <dockerDirectory>src/main/docker</dockerDirectory>
                        <resources>
                            <resource>
                                <targetPath>/</targetPath>
                                <directory>${project.build.directory}</directory>
                                <include>${project.build.finalName}.jar</include>
                            </resource>
                        </resources>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    
    
    </project>

imageName:为生成的镜像名字，:后面为tag

dockerHost:为docker主机地址，docker需要开启tcp访问

![70][]

dockerDirectory：为Dockerfile的路径地址

resource中把最终工程的jar包包含进来

Dockerfile如下：

FROM docker.io/java
    VOLUME /tmp
    ADD springboot19-0.0.1-SNAPSHOT.jar app.jar
    ENTRYPOINT ["java","-jar","/app.jar"]

Controller方法：

package com.xhx.springboot.controller;
    
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    /**
     * xuhaixing
     * 2018/5/20 22:47
     */
    @RestController
    @RequestMapping(value = "test")
    public class HelloController {
    
        @RequestMapping(value = "hello")
        public String helloWorld(){
            return "hello world";
        }
    }

启动类：

package com.xhx.springboot;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    //mvn package docker:build -e
    @SpringBootApplication
    public class Springboot19Application {
    
        public static void main(String[] args) {
            SpringApplication.run(Springboot19Application.class, args);
        }
    }

spring的配置文件是空的，我什么都没配置。

构成的结构如下：

![70 1][]

执行mvn package docker:build就行了

控制台会打印出下面信息：

![70 2][]

docker容器中镜像：

![70 3][]

启动：

![70 4][]

查看日志：

![70 5][]

访问

![70 6][]

证明成功了。

[我的github地址][github]

[70]: /images/20220521/1ced3781f6304c6b89ce0efbbeca2ef3.png
[70 1]: /images/20220521/3a8d7c22121941ebaaa0b7e4b90adabf.png
[70 2]: /images/20220521/af9e7caa2ac347338d0318c895d92d1c.png
[70 3]: /images/20220521/6abb58d552ac4d9b88e50b749b7953de.png
[70 4]: /images/20220521/8e6d9273de9e44e3bda170c59f93e3e1.png
[70 5]: /images/20220521/634dda17876348b18a726b6f0d37da49.png
[70 6]: /images/20220521/556906514dda4ca2b29e1af81201db17.png
[github]: https://github.com/xuhaixing/myDocument.git