详解springcloud Feign的Hystrix支持

Z时代
2024-01-10
分类：综合

本文介绍了springcloud Feign的Hystrix支持，分享给大家，具体如下：

一、Feign client中加入Hystrix的fallback


@FeignClient(name="springboot-h2", fallback=HystrixClientFallback.class) //在fallback属性中指定断路器的fallback 
public interface UserFeignClient { 
// @GetMapping("/user/{id}") 
  @RequestMapping(value = "/user/{id}", method = RequestMethod.GET) 
  User findById(@PathVariable("id") Long id); 
  @RequestMapping(value="/users", method=RequestMethod.GET) 
  List<User> findAll(); 
  @RequestMapping(value="/post/user", method=RequestMethod.POST) 
  User save(@RequestBody User user); 
}

二、编写HystrixClientFallback类


@Component //加入spring bean中 
public class HystrixClientFallback implements UserFeignClient{ 
  @Override 
  public User findById(Long id) { 
    User u = new User(); 
    u.setName("临时名"); 
    u.setUsername("匿名"); 
    return u; 
  } 
  @Override 
  public List<User> findAll() { 
    return null; 
  } 
  @Override 
  public User save(User user) { 
    return null; 
  } 
}