IDEA一鍵部署SpringBoot到Docker，這個騷操作你會了嗎？

2019 年 10 月 11 日
筆記

作者：陶章好  原文：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，那麼它們結合在一起會產生什麼化學反應呢？

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，在最後面添加 -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、新建項目

1.創建springboot項目

項目結構圖

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>

2、在src/main目錄下創建docker目錄，並創建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目錄下創建application.properties文件

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

4、創建DockerApplication文件

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

5、創建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

命令解釋：

Image tag : 指定鏡像名稱和tag，鏡像名稱為 docker-demo，tag為1.1
Bind ports : 綁定宿主機埠到容器內部埠。格式為[宿主機埠]:[容器內部埠]
Bind mounts : 將宿主機目錄掛到到容器內部目錄中。格式為[宿主機目錄]:[容器內部目錄]。這個springboot項目會將日誌列印在容器 /home/developer/app/logs/ 目錄下，將宿主機目錄掛載到容器內部目錄後，那麼日誌就會持久化容器外部的宿主機目錄中。

7、Maven打包