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Idea是Java開發(fā)利器，SpringBoot是Java生態(tài)中最流行的微服務(wù)框架，docker是時(shí)下最火的容器技術(shù)，那么它們結(jié)合在一起會(huì)產(chǎn)生什么化學(xué)反應(yīng)呢？

一、開發(fā)前準(zhǔn)備

1. Docker的安裝可以參考https://docs.docker.com/install/

2. 配置docker遠(yuǎn)程連接端口

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

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

3. 重啟docker

 systemctl daemon-reload systemctl start docker

4. 開放端口

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

5. Idea安裝插件,重啟

6. 連接遠(yuǎn)程docker

?(1) 編輯配置

??

(2) 填遠(yuǎn)程docker地址

?(3) 連接成功，會(huì)列出遠(yuǎn)程docker容器和鏡像

二、新建項(xiàng)目

1. 創(chuàng)建springboot項(xiàng)目

項(xiàng)目結(jié)構(gòu)圖

(1) 配置pom文件

<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>4.0.0modelVersion>
    <groupId>docker-demogroupId>    <artifactId>com.demoartifactId>    <version>1.0-SNAPSHOTversion>    <parent>        <groupId>org.springframework.bootgroupId>        <artifactId>spring-boot-starter-parentartifactId>        <version>2.0.2.RELEASEversion>        <relativePath />    parent>
    <properties>         <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>         <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>         <docker.image.prefix>com.demodocker.image.prefix>         <java.version>1.8java.version>    properties>    <build>        <plugins>          <plugin>            <groupId>org.springframework.bootgroupId>            <artifactId>spring-boot-maven-pluginartifactId>          plugin>        <plugin>           <groupId>com.spotifygroupId>           <artifactId>docker-maven-pluginartifactId>           <version>1.0.0version>           <configuration>              <dockerDirectory>src/main/dockerdockerDirectory>              <resources>                <resource>                    <targetPath>/targetPath>                    <directory>${project.build.directory}directory>                    <include>${project.build.finalName}.jarinclude>                resource>              resources>           configuration>        plugin>        <plugin>            <artifactId>maven-antrun-pluginartifactId>            <executions>                 <execution>                     <phase>packagephase>                    <configuration>                        <tasks>                            <copy todir="src/main/docker" file="target/${project.artifactId}-${project.version}.${project.packaging}">copy>                        tasks>                     configuration>                    <goals>                        <goal>rungoal>                    goals>                    execution>            executions>        plugin>
       plugins>    build><dependencies>    <dependency>        <groupId>org.springframework.bootgroupId>        <artifactId>spring-boot-starter-webartifactId>    dependency>    <dependency>  <groupId>org.springframework.bootgroupId>        <artifactId>spring-boot-starter-testartifactId>        <scope>testscope>    dependency>    <dependency>        <groupId>log4jgroupId>        <artifactId>log4jartifactId>        <version>1.2.17version>    dependency>dependencies>project>

(2) 在src/main目錄下創(chuàng)建docker目錄，并創(chuàng)建Dockerfile文件

FROM openjdk:8-jdk-alpineADD *.jar app.jarENTRYPOINT?["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]

(3) 在resource目錄下創(chuàng)建application.properties文件

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

(4) 創(chuàng)建DockerApplication文件

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

(5) 創(chuàng)建DockerController文件

@RestControllerpublic class DockerController {    static Log log = LogFactory.getLog(DockerController.class);
    @RequestMapping("/")    public String index() {        log.info("Hello Docker!");        return "Hello Docker!";    }}