第九章：SpringCloud Feign几个坑

#####1.@GetMapping 不支持 必须用@RequestMapping #####2.@PathVariable 必须设置value

#####3.如果是get方法，但是参数是个对象（比如 public User getUser(User user)）,feign会把它当做post方法。所以这里我们必须把User的属性都一个一个@RequestParam("id")String id出来 #####4. GET请求多参数的URL 尽管指定了GET方法，Feign依然会发送POST请求。解决办法

@FeignClient(name = "microservice-provider-user")
public interface UserFeignClient {
  @RequestMapping(value = "/get", method = RequestMethod.GET)
  public User get1(@RequestParam("id") Long id, @RequestParam("username") String username);
}

#####5. POST请求包含多个参数

@FeignClient(name = "microservice-provider-user")
public interface UserFeignClient {
  @RequestMapping(value = "/post", method = RequestMethod.POST)
  public User post(@RequestBody User user);
}