Spring Boot入门系列之：四、Spring Boot整合docker

ゝ一世哀愁。 2022-04-22 16:08 250阅读 0赞

# spring-boot-docker #

## 开发环境 ##

开发工具： Intellij IDEA 2018.2.6

springboot: 2.0.6.RELEASE

jdk： 1.8.0\_192

maven: 3.6.0

docker: Docker Engine - Community 18.09.0

## 搭建项目 ##

由于使用了 Spring Cloud 的Eureka所以加了 eureka 的依赖，基本不需要多加额外的配置

*  pom.xml

<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>
    
        <artifactId>spring-boot-docker</artifactId>
        <groupId>com.andy</groupId>
        <version>1.0.7.RELEASE</version>
    
        <packaging>jar</packaging>
    
        <dependencyManagement>
            <dependencies>
                <dependency>
                    <groupId>io.spring.platform</groupId>
                    <artifactId>platform-bom</artifactId>
                    <version>Cairo-SR5</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
                <dependency>
                    <groupId>org.springframework.cloud</groupId>
                    <artifactId>spring-cloud-dependencies</artifactId>
                    <version>Finchley.SR2</version>
                    <type>pom</type>
                    <scope>import</scope>
                </dependency>
            </dependencies>
        </dependencyManagement>
    
        <properties>
            <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
            <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
            <docker.image.prefix>andy</docker.image.prefix>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
            </dependency>
    
        </dependencies>
    
        <build>
            <finalName>spring-docker</finalName>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.7.0</version>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                        <encoding>UTF-8</encoding>
                    </configuration>
                </plugin>
    
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                    <version>2.0.3.RELEASE</version>
                    <configuration>
                        
                        <layout>ZIP</layout>
                    </configuration>
                    <executions>
                        <execution>
                            <goals>
                                <goal>repackage</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
    
                <plugin>
                    <groupId>com.spotify</groupId>
                    <artifactId>docker-maven-plugin</artifactId>
                    <version>1.0.0</version>
                    <configuration>
                        <imageName>${docker.image.prefix}/${project.artifactId}</imageName>
                        <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
                        <dockerDirectory>src/main/docker</dockerDirectory>
                        <baseImage>java</baseImage>
                        <resources>
                            <resource>
                                <targetPath>/</targetPath>
                                <directory>${project.build.directory}</directory>
                                <include>${project.build.finalName}.jar</include>
                            </resource>
                        </resources>
                    </configuration>
                </plugin>
            </plugins>
        </build>
    
    
        <repositories>
            <repository>
                <id>spring-snapshots</id>
                <name>Spring Snapshots</name>
                <url>https://repo.spring.io/snapshot</url>
                <snapshots>
                    <enabled>true</enabled>
                </snapshots>
            </repository>
            <repository>
                <id>spring-milestones</id>
                <name>Spring Milestones</name>
                <url>https://repo.spring.io/milestone</url>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </repository>
        </repositories>
    
        <pluginRepositories>
            <pluginRepository>
                <id>spring-snapshots</id>
                <name>Spring Snapshots</name>
                <url>https://repo.spring.io/snapshot</url>
                <snapshots>
                    <enabled>true</enabled>
                </snapshots>
            </pluginRepository>
            <pluginRepository>
                <id>spring-milestones</id>
                <name>Spring Milestones</name>
                <url>https://repo.spring.io/milestone</url>
                <snapshots>
                    <enabled>false</enabled>
                </snapshots>
            </pluginRepository>
        </pluginRepositories>
    
    </project>

*  application.yml

server:
      port: 8761
      servlet:
        path: /
    spring:
      application:
        name: spring-eureka-docker
    eureka:
      client:
        register-with-eureka: false
        fetch-registry: false
        serviceUrl:
          defaultZone: http://localhost:8761/eureka

*  启动类

/**
     * <p>
     *
     * @author Leone
     * @since 2018-03-06
     **/
    @EnableEurekaServer
    @SpringBootApplication
    public class DockerApplication {
        public static void main(String[] args) {
            SpringApplication.run(DockerApplication.class, args);
        }
    }

*  Dockerfile

在src/main/docker目录下(没有则创建此目录)创建Dockerfile文件然后把maven编译后的jar文件拷贝到和Dockerfile同级的目录

# 基于哪个镜像
    FROM java:8
    
    # 将本地文件夹挂载到当前容器
    VOLUME /tmp
    
    # 维护者信息
    MAINTAINER leone "exklin@gmail.com"
    
    # 拷贝文件到容器
    ADD spring-docker.jar eureka.jar
    
    # 执行命令
    RUN bash -c 'touch eureka.jar'
    
    # 声明端口
    EXPOSE 8761
    
    # 配置容器启动后执行的命令
    ENTRYPOINT ["java","-jar","-Djava.security.egd=file:/dev/./urandom","eureka.jar"]

安装 idea Docker 插件后需要在 windows 下安装 Docker 在docker 插件的 Deploy configuration 里面配置 docker 容器参数之后 点击Run后就会顺序执行 Dockerfile 里面的命令就会启动这个docker容器。打开浏览器访问http://localhost:8761,[传送门][Link 1]

[Link 1]: https://github.com/janlle/spring-boot-examples