springcloud服务消费端之从消费端直接到服务提供端-03

「爱情、让人受尽委屈。」 2022-03-28 07:08 276阅读 0赞

[springcloud入门详细搭建微服务环境-01][springcloud_-01]

[springcloud服务提供端-02][springcloud_-02]

springcloud消费端是在以上的基础上搭建的：

### 1.导入依赖的jar包 ###

<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>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            </dependency>
            
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-config</artifactId>
            </dependency>

### 2.写一个消费服务端的入口类 ###

package cn.mesmile;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    /**
     * @Created with IDEA
     * @author: Super Zheng
     * @Description: java类作用描述
     * @Date:2019/1/6
     * @Time:14:11
        这里演示 直接从 消费端到服务提供端
     */
    @SpringBootApplication
    public class UserConsumerApplication {
        public static void main(String[] args) {
            SpringApplication.run(UserConsumerApplication.class);
        }
    }

### 3.写一个config类     ###

package cn.mesmile.config;
    
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    import org.springframework.web.client.RestTemplate;
    
    /**
     * @Created with IDEA
     * @author: Super Zheng
     * @Description: java类作用描述
     * @Date:2019/1/6
     * @Time:14:15
     */
    @Configuration
    public class ConfigBean {
        @Bean
        public RestTemplate getRestTemplate(){
            return new RestTemplate();
        }
    }

### 4.写一个消费端controller类 ###

package cn.mesmile.controller;
    
    import cn.mesmile.User;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.web.bind.annotation.PathVariable;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    import org.springframework.web.client.RestTemplate;
    
    /**
     * @Created with IDEA
     * @author: Super Zheng
     * @Description: java类作用描述
     * @Date:2019/1/6
     * @Time:14:12
     */
    @RestController
    @RequestMapping("/consumer")
    public class UserController {
    
        @Autowired
        private RestTemplate restTemplate;
    
        @RequestMapping("/user/{id}")
        public User getUser(@PathVariable(name = "id") Long id){
            String url = "http://localhost:8001/provider/user/"+id;
            return restTemplate.getForObject(url, User.class);
        }
    }

### 5.写配置文件 ###

server:
      port: 9001
    eureka:
      client:
        service-url:
         defaultZone: http://localhost:7001/eureka #告诉服务提供者要把服务注册到哪里
      instance:
        prefer-ip-address: true #显示客户端ip
    spring:
      application:
        name: USER-CONSUMER #不要使用下划线

### 6.启动注册中心入口类，启动服务提供端入口类，启动消费服务端入口类 ###

![20190109215628444.png][]

[springcloud_-01]: https://blog.csdn.net/suprezheng/article/details/86107570
[springcloud_-02]: https://blog.csdn.net/suprezheng/article/details/86180847
[20190109215628444.png]: /images/20220328/1edd00ea1e2b4c819804a81f60a87e4b.png