基于docker-compose发布自己的微服务

2022-06-16 00:22:52

Step By Step

1、编写项目微服务；
2、dockerfile构建镜像；
3、docker-compose.yml编排项目；
4、docker-compose up 构建项目。

一、编写项目微服务

1.1 SpringBoot(2.2.5.RELEASE)依赖

 <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
        </dependency>
        <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>
    </dependencies>

1.2 RestController.java

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @Autowired
    StringRedisTemplate redisTemplate;

    @GetMapping("/hello")
    public String hello()
    {
        Long views = redisTemplate.opsForValue().increment("views");
        return "浏览的次数：" + views;
    }
}

1.3 application.properties

server.port=8080
spring.redis.host=redis

1.4 项目结构

1.5 项目打包

二、dockerfile构建镜像

2.1 Dockerfile文件内容

FROM java:8

COPY *.jar /app.jar

CMD ["--server.port=8080"]

EXPOSE 8080

ENTRYPOINT ["java","-jar","/app.jar"]

三、docker-compose.yml编排项目

3.1 docker-compose.yml内容

version: '3.3'

services:
  taroapp:
    build: .
    image: taroapp
    depends_on:
      - redis
    ports:
      - "8080:8080"
  redis:
    image: "redis:alpine"