Feign 服务

    org.springframework.boot
    spring-boot-starter-web



    org.springframework.cloud
    spring-cloud-starter-netflix-eureka-client


    org.springframework.cloud
    spring-cloud-starter-feign
    1.4.7.RELEASE

application.yml 配置：

server:
  port: 8081
spring:
  application:
    name: feign
eureka:
  instance:
    hostname: localhost
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka
    fetch-registry: true

SpringBootApplication启动类上加注解@EnableFeignClients 启动feign

定义一个feign接口类,通过@ FeignClient（“服务名”），来指定调用哪个服务：

@FeignClient(value = "user")
public interface TestService {

    @RequestMapping("login")
    public ReturnResult login(UserLoginEntity userLoginEntity);

}

之后建立一个controller：

@Autowired
private TestService testService;

@RequestMapping("login")
public ReturnResult login(@Validated @RequestBody UserLoginEntity userLoginEntity) {
    return testService.login(userLoginEntity);
}

就可以通过controller访问到  user  微服务下的"login"接口