来自： http://my.oschina.net/u/2252300/blog/615951

最近更新了AFNetworking的版本，用了最新的3.0.4

发现较之前使用的2.5版本有较大的区别

在文件目录结构上3.0.4去除了NSURLConnection这个文件夹和里面的

AFHTTPRequestOperation.h

AFHTTPRequestOperation.m

AFHTTPRequestOperationManager.h

AFHTTPRequestOperationManager.m

AFURLConnectionOperation.h

AFURLConnectionOperation.m

这6个文件

在之前的2.5版本中我们常使用的方法是：

    AFHTTPRequestOperationManager *mgr = [AFHTTPRequestOperationManager manager];      mgr.requestSerializer = [AFHTTPRequestSerializer serializer];      mgr.responseSerializer = [AFJSONResponseSerializer serializer];                                NSDictionary *params = @{ @"PPID":[NSString stringWithFormat:@"%ld", (long)ppId],                                @"UserID":userId,                              };            [mgr POST:url parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {          NSDictionary* jsonRsp = (NSDictionary *)responseObject;          if (isSuccessRsp(jsonRsp))          {              success(jsonRsp);          }          else          {              failure(errorMsgRsp(jsonRsp));          }      } failure:^(AFHTTPRequestOperation *operation, NSError *error) {          failure(error.description);      }];

- (AFHTTPRequestOperation *)POST:(NSString *)URLString                    headParameters:(id)headParameters                    bodyParameters:(id)bodyParameters                           success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success                           failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure  {      [self setHeadParameters:headParameters];            NSMutableURLRequest *request = [self.requestSerializer requestWithMethod:@"POST" URLString:[[NSURL URLWithString:URLString] absoluteString] parameters:bodyParameters error:nil];      AFHTTPRequestOperation *operation = [self HTTPRequestOperationWithRequest:request success:success failure:failure];            [self.operationQueue addOperation:operation];            return operation;  }

同时也不需要手动写队列

现3.0.4使用方法更加简单

- (void)POST:(NSString *)URLString             headParameters:(id)headParameters             bodyParameters:(id)bodyParameters                    success:(void (^)( id responseObject))success                    failure:(void (^)( NSError *error))failure  {      NSURL *url= [NSURL URLWithString:URLString];      if (url == NULL)      {          return;      }            AFHTTPSessionManager *sessionManager = [AFHTTPSessionManager manager];            if (headParameters)      {          [self setHeadParameters:headParameters sessionMgr:sessionManager];      }        [sessionManager POST:[url absoluteString] parameters:bodyParameters progress:^(NSProgress * _Nonnull uploadProgress) {      } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {          success(responseObject);      } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {          failure(error);      }];  }