SpringBoot Feign接口方式调用服务

1、前文接 SpringBoot Eureka集群配置

2、EurekaConsumer_Feign_9002

添加openfeign依赖

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>

添加yml配置

eureka:
  client:
    register-with-eureka: false
    serviceUrl: #注册中心的注册地址
      defaultZone: http://127.0.0.1:7001/eureka/
server:
  port: 9002  #服务端口号
spring:
  application:
    name: service-consumer #服务名称--调用的时候根据名称来调用该服务的方法

EurekaConsumer_Feign_9002启动类添加@EnableFeignClients扫描包

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients(basePackages = {"com.kikyo"})
public class EurekaConsumer_Feign_9002 {
    public static void main(String[] args) {
        SpringApplication.run(EurekaConsumer_Feign_9002.class, args);
    }
}

TestService这个接口是从Eureka服务(SERVICE-PROVIDER)拿实现类的

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.stereotype.Component;
import org.springframework.web.bind.annotation.GetMapping;

@Component
@FeignClient("SERVICE-PROVIDER")
public interface TestService {
    @GetMapping("/get")
    String get();
}

接收请求

import com.kikyo.service.TestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

@RestController
public class TestController {
    @Autowired
    private TestService testService = null;

    @RequestMapping("/get")
    public String getUser() {
        return testService.get();
    }
}