helloService 介面

package springcloud.helloserviceapi;

import org.springframework.web.bind.annotation.*;

@RequestMapping("helloController")

public interface HelloService {

@RequestMapping(value = "/hello",method = RequestMethod.GET)

String hello();

@RequestMapping(value = "/hello1",method = RequestMethod.GET)

String hello(@RequestParam("name") String name);

@RequestMapping(value = "/hello2",method = RequestMethod.GET)

User hello(@RequestHeader("name") String name, @RequestHeader("age") Integer age);

/* @RequestMapping(value = "/hello3",method = RequestMethod.POST)

String hello(@RequestBody User user);*/

}

調整feign介面

package springcloud.feign;

import org.springframework.cloud.netflix.feign.FeignClient;

import org.springframework.web.bind.annotation.*;

import springcloud.helloserviceapi.HelloService;

import springcloud.helloserviceapi.User;

@FeignClient(name = "hello-service",fallback = HelloServiceFallback.class)

public interface HelloServiceExtends extends HelloService{

}

新增 fallback介面

注意 @RequestMapping 必須要更 HelloService 的不一樣，否則會衝突

@RequestMapping("fallback/helloController")

package springcloud.feign;

import feign.hystrix.FallbackFactory;

import org.springframework.stereotype.Component;

import org.springframework.web.bind.annotation.*;

import springcloud.helloserviceapi.HelloService;

import springcloud.helloserviceapi.User;

@Component

@RequestMapping("fallback/helloController")

public class HelloServiceFallback implements HelloServiceExtends{

@Override

public String hello() {

return "error";

}

@Override

public String hello(String name) {

return null;

}

@Override

public User hello(String name, Integer age) {

return null;

}

}