Spring Boot Docker 实战

2023-01-07 11:05:33

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>

                    <!--<mainClass>${start-class}</mainClass>-->

                    <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

码农公寓

Spring Boot Docker

开发环境

搭建项目

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