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
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vi /usr/lib/systemd/system/docker .service
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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
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systemctl daemon-reload
systemctl restart docker
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4.开放端口
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firewall-cmd --zone=public --add-port=2375 /tcp --permanent
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5.Idea安装docker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
创建springboot项目
项目结构图
(1) 配置pom文件
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<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd" >
<modelVersion> 4.0 . 0 </modelVersion>
<parent>
<groupId>com.fengqi</groupId>
<artifactId>dockerDemo</artifactId>
<version> 1.0 . 0 </version>
<relativePath>../pom.xml</relativePath> <!-- lookup parent from repository -->
</parent>
<groupId>com.fengqi</groupId>
<artifactId>web</artifactId>
<version> 1.0 . 0 </version>
<name>web</name>
<description>Demo project for Spring Boot</description>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version> 1.2 . 17 </version>
</dependency>
</dependencies>
<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>
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(2) 在src/main目录下创建docker目录,并创建Dockerfile文件
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FROM openjdk: 8 -jdk-alpine
ADD *.jar app.jar
ENTRYPOINT [ "java" , "-Djava.security.egd=file:/dev/./urandom" , "-jar" , "/app.jar" ]
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(3) 在resource目录下创建application.properties文件
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logging.config=classpath:logback.xml
logging.path=/home/developer/app/logs/
server.port= 8990
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(4) 创建DockerApplication文件
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@SpringBootApplication
public class DockerApplication {
public static void main(String[] args) {
SpringApplication.run(DockerApplication. class , args);
}
}
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(5) 创建DockerController文件
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@RestController
public class DockerController {
static Log log = LogFactory.getLog(DockerController. class );
@RequestMapping ( "/" )
public String index() {
log.info( "Hello Docker!" );
return "Hello Docker!" ;
}
}
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(6) 增加配置
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
(8) 运行
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
(10) 浏览器访问
(11) 日志查看
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!
最后分享给大家相关学习教程:
https://www.bilibili.com/video/BV14t411z77T
IDEA教程
https://www.bilibili.com/video/BV1PZ4y1j7QK
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原文链接:https://blog.csdn.net/bjpowernode_com/article/details/109173855