SpringCloud @FeignClient参数的用法解析

@FeignClient(name = "service-name", url = "${feign.urls.service-name:}", fallback =apiFallBack.class,configuration = Interceptor.class)

@FeignClient(name = "service-name", fallbackFactory = HystrixClientFallbackFactory.class)
protected interface HystrixClient {
@RequestMapping(method = RequestMethod.GET, value = "/test")
           Hello iFailSometimes();
 }
@Component
static class HystrixClientFallbackFactory implements FallbackFactory<HystrixClient> {
@Override
public HystrixClient create(Throwable cause) {
return new HystrixClientWithFallBackFactory() {
@Override
public Hello iFailSometimes() {
return new Hello("fallback; reason was: " + cause.getMessage());
}
};
}
}

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface FeignClient {
 
   
   @AliasFor("name")
   String value() default "";
 
   
   @Deprecated
   String serviceId() default "";
 
   
   @AliasFor("value")
   String name() default "";
   
   
   String qualifier() default "";
 
   
   String url() default "";
 
   
   boolean decode404() default false;
 
   
   Class<?>[] configuration() default {};
 
   
   Class<?> fallback() default void.class;
 
   
   Class<?> fallbackFactory() default void.class;
 
   
   String path() default "";
 
   
   boolean primary() default true;
 
}

@FeignClient(value = "annoroad-alpha",  url = "${annoroad.ms.annoroad-alpha.url}")
public interface UserFacade {
    @PostMapping(value = "/user/detail")
    UserDto detail(@RequestParam("id") long id);
}