//简单写法
@property (nonatomic,copy) void(^JudgeCharacterSignature)();

/**
 *  @param success   请求成功后执行的代码块
 *  @param failure   请求失败后执行的代码块
 */
-(void)requestFriendListSuccess:(void(^)())success
                        Failure:(void(^)())failure;