Docker + IntelliJ IDEA，助你提升 10 倍生产力。。。

Posted 2022-04-17 Java技术栈

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来源：juejin.im/post/5d026212f265da1b8608828b

IDEA是Java开发利器，springboot是Java生态中最流行的微服务框架，docker是时下最火的容器技术，那么它们结合在一起会产生什么化学反应呢？

一、开发前准备

1.Docker安装

可以参考：

https://docs.docker.com/install/

2.配置docker远程连接端口

vi /usr/lib/systemd/system/docker.service

找到 ExecStart，在最后面添加 -H tcp://0.0.0.0:2375，如下图所示

3.重启docker

systemctl daemon-reload
systemctl start docker

4.开放端口

firewall-cmd --zone=public --add-port=2375/tcp --permanent

5.Idea安装插件，重启

6.连接远程docker

「1、编辑配置」

「2、填远程docker地址」

「3、连接成功，会列出远程docker容器和镜像」

二、新建项目

1.创建springboot项目

项目结构图

「1、配置pom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>

    <groupId>docker-demo</groupId>
    <artifactId>com.demo</artifactId>
    <version>1.0-SNAPSHOT</version>
    <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>
         <docker.image.prefix>com.demo</docker.image.prefix>
         <java.version>1.8</java.version>
    </properties>
    <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>
              <dockerDirectory>src/main/docker</dockerDirectory>
              <resources>
                <resource>
                    <targetPath>/</targetPath>
                    <directory>$project.build.directory</directory>
                    <include>$project.build.finalName.jar</include>
                </resource>
              </resources>
           </configuration>
        </plugin>
        <plugin>
            <artifactId>maven-antrun-plugin</artifactId>
            <executions>
                 <execution>
                     <phase>package</phase>
                    <configuration>
                        <tasks>
                            <copy todir="src/main/docker" file="target/$project.artifactId-$project.version.$project.packaging"></copy>
                        </tasks>
                     </configuration>
                    <goals>
                        <goal>run</goal>
                    </goals>
                    </execution>
            </executions>
        </plugin>

       </plugins>
    </build>
<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>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.17</version>
    </dependency>
</dependencies>
</project>

Spring Boot 基础就不介绍了，推荐下这个实战教程： https://github.com/javastacks/spring-boot-best-practice

「2、在src/main目录下创建docker目录，并创建Dockerfile文件」

FROM openjdk:8-jdk-alpine
ADD *.jar app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

「3、在resource目录下创建application.properties文件」

logging.config=classpath:logback.xml
logging.path=/home/developer/app/logs/
server.port=8990

「4、创建DockerApplication文件」

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

「5、创建DockerController文件」

@RestController
public class DockerController 
    static Log log = LogFactory.getLog(DockerController.class);

    @RequestMapping("/")
    public String index() 
        log.info("Hello Docker!");
        return "Hello Docker!";

「6、增加配置」