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牛逼!Docker遇到Intellij IDEA,再次解放了生产力~

 3 years ago
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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的安装可以参考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

fYBr2y.jpg!mobile

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

B7BneaE.jpg!mobile

6. 连接远程docker

(1) 编辑配置

ZR7VJvz.jpg!mobile

(2) 填远程docker地址

VRFZnyv.jpg!mobile

(3) 连接成功,会列出远程docker容器和镜像

jqiAZ3r.jpg!mobile

二、新建项目

1. 创建springboot项目

项目结构图

nURnIj3.jpg!mobile

(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

fiIZN3R.jpg!mobileBnUJfeN.jpg!mobilemArUVff.jpg!mobile

命令解释

Image tag : 指定镜像名称和tag,镜像名称为 docker-demo,tag为1.1

Bind ports : 绑定宿主机端口到容器内部端口。格式为[宿主机端口]:[容器内

部端口]

Bind mounts : 将宿主机目录挂到到容器内部目录中。格式为[宿主机目录]:[容器内部目录]。这个springboot项目会将日志打印在容器 

/home/developer/app/logs/ 目录下,将宿主机目录挂载到容器内部目录后,那么日志就会持久化容器外部的宿主机目录中。

(7) Maven打包

MBZFF3E.jpg!mobile

(8) 运行

UZv2qqr.jpg!mobileqmuiaqv.jpg!mobile

先pull基础镜像,然后再打包镜像,并将镜像部署到远程docker运行

vAZn2ui.jpg!mobile

这里我们可以看到镜像名称为docker-demo:1.1,docker容器为docker-server

(9) 运行成功

BZV7jmn.jpg!mobile

(10) 浏览器访问

j6VvYnu.jpg!mobile

(11) 日志查看

uA7Bv2b.jpg!mobile

自此通过idea 部署springboot项目到docker成功!难以想象,部署一个Javaweb项目竟然如此简单方便!

作者:陶章好

链接:https://juejin.im/post/5d026212f265da1b8608828b

来源:掘金


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