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搭建SpringBoot项目

搭建一个简单的SpringBoot项目：

1. 创建maven工程，pom为：

<?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><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.5.6</version></parent><groupId>org.study</groupId><artifactId>test-docker</artifactId><packaging>pom</packaging><version>1.0-SNAPSHOT</version><modules><module>docker_boot</module></modules><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target></properties></project>

2. 新建Module，pom为：

<?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"><parent><artifactId>test-docker</artifactId><groupId>org.study</groupId><version>1.0-SNAPSHOT</version></parent><modelVersion>4.0.0</modelVersion><artifactId>docker_boot</artifactId><properties><maven.compiler.source>8</maven.compiler.source><maven.compiler.target>8</maven.compiler.target></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-actuator</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>
</project>

3. 编写一个配置文件

server:port: 6001

4. 编写主启动类

package com.study;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;/*** @author tengyer 2022/05/06 16:34*/
@SpringBootApplication
public class DockerBootApplication {public static void main(String[] args) {SpringApplication.run(DockerBootApplication.class, args);}
}

5. 编写一个Controller

package com.study.controller;import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;import java.util.UUID;/*** @author tengyer 2022/05/06 16:35*/
@RestController
public class OrderController {@Value("${server.port}")private String port;@RequestMapping("/order/docker")public String helloDocker() {return "hello world \t" + port + "\t" + UUID.randomUUID().toString();}@RequestMapping(value = "/order/index", method = RequestMethod.GET)public String index() {return "服务端口号：" + "\t" + port + "\t" + UUID.randomUUID().toString();}
}

在Idea中运行没有问题时，将其使用maven的package打成jar包。

发布微服务项目到Docker容器

1. 将项目jar包上传到服务器
2. 编写Dockerfile

FROM openjdk:8-oracle
MAINTAINER Snow [wb137725@163.com]# 在主机 /var/lib/docker目录下创建一个临时文件，并链接到容器的 /tmp
VOLUME /tmp# 将jar包添加到容器中，并命名为 springboot_docker.jar
ADD docker_boot-1.0-SNAPSHOT.jar springboot_docker.jar
# 运行jar包
RUN bash -c 'touch /springboot_docker.jar'
ENTRYPOINT ["java", "-jar", "/springboot_docker.jar"]# SpringBoot项目配置的端口号为9999，需要将9999暴露出去
EXPOSE 9999

3. 构建镜像

docker build -t springboot_docker:1.0 .

4. 启动容器：

docker run -d -p 9999:9999 --name springboot springboot_docker:1.0