AFNetwork404处理

AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManagermanager];
mgr.responseSerializer.acceptableContentTypes = [mgr.responseSerializer.acceptableContentTypessetByAddingObject:@"text/html"];//Very Important
NSDictionary *param = @{@"name:@"jack",@"age":@"33"};
[mgr POST:@"test.php"parameters:param success:^(AFHTTPRequestOperation *operation,id responseObject) {
       NSDictionary *d = responseObject;
        NSString *str = [NSStringstringWithFormat:@"age:%@;\ngender:%@;\nname:%@\n\nresult:%@",d[@"content"][@"age"],d[@"content"][@"gender"],d[@"content"][@"name"],d[@"result"]];
    } failure:^(AFHTTPRequestOperation *operation,NSError *error)
    {
      operation.response.statusCode;//404 401之类
    }];