微服务之nacos注册/配置中心/feign远程调用

1.引入SpringCloudAlibaba依赖:

 
    
        
            
                com.alibaba.cloud
                spring-cloud-alibaba-dependencies
                2.1.0.RELEASE
                pom
                import
            
        
    

2.nacos注册中心:

引入nacos服务注册发现依赖

 
        
            com.alibaba.cloud
            spring-cloud-starter-alibaba-nacos-discovery
        

 yml文件中配置注册中心地址

spring:
  #服务名称
  application:
    name: abc-service
  #配置nacos服务器注册中心地址
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8081

在启动类上加注解@EnableDiscoveryClient

@SpringBootApplication
@EnableDiscoveryClient
public class ServiceApplication {
    public static void main(String[] args) {
        SpringApplication.run(ServiceApplication.class, args);
    }
}

3.注册好两个服务之间可远程调用,远程调用使用Feign组件

引入feign组件依赖


        
            org.springframework.cloud
            spring-cloud-starter-openfeign
        

在启动类上加注解@EnableFeignClients

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class ServiceApplication {
    public static void main(String[] args) {
        SpringApplication.run(ServiceApplication.class, args);
    }
}

创建feign包,在feign包中创建feign服务接口feignService:@FeignClient("服务名"),@RequestMapping("调用接口路径")

package com.abc.service.feign;

import com.abc.common.utils.R;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RequestMapping;

@FeignClient("name-service")
public interface feignService {
    @RequestMapping("/abc/getName")
    R getName(@RequestParam String params);
}

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