Docker + IntelliJ IDEA，助你提升 10 倍生產力。。。-有解無憂

來源：juejin.im/post/5d026212f265da1b8608828b

IDEA是Java開發利器，springboot是Java生態中最流行的微服務框架，docker是時下最火的容器技術，那么它們結合在一起會產生什么化學反應呢？

一、開發前準備

1.Docker安裝

可以參考：

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

2.配置docker遠程連接埠

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

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

3.重啟docker

systemctl daemon-reload
systemctl start docker

4.開放埠

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

5.Idea安裝插件，重啟

6.連接遠程docker

「1、編輯配置」

「2、填遠程docker地址」

「3、連接成功，會列出遠程docker容器和鏡像」

二、新建專案

1.創建springboot專案

專案結構圖

「1、配置pom檔案」

<?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 基礎就不介紹了，推薦下這個實戰教程：
https://github.com/javastacks/spring-boot-best-practice

「2、在src/main目錄下創建docker目錄，并創建Dockerfile檔案」

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

「3、在resource目錄下創建application.properties檔案」

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

「4、創建DockerApplication檔案」

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

「5、創建DockerController檔案」

@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」