+ (AFHTTPRequestOperation *)GETMethod:(NSString *)URLString
                           parameters:(id)parameters
                              success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
                              failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure {
    
    AFHTTPRequestOperationManager *manager    = [AFHTTPRequestOperationManager manager];

    // 设置超时时间
    [manager.requestSerializer willChangeValueForKey:@"timeoutInterval"];
    manager.requestSerializer.timeoutInterval = 10.f;
    [manager.requestSerializer didChangeValueForKey:@"timeoutInterval"];
    
    AFHTTPRequestOperation *httpOperation = [manager GET:URLString
                                              parameters:parameters
                                                 success:^(AFHTTPRequestOperation *operation, id responseObject) {
                                                     if (success) {
                                                         success(operation, responseObject);
                                                     }
                                                 }
                                                 failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                                     if (failure) {
                                                         failure(operation, error);
                                                     }
                                                 }];
    
    return httpOperation;
}

get请求

+ (AFHTTPRequestOperation *)POSTMethod:(NSString *)URLString
                            parameters:(id)parameters
                               success:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
                               failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure {
    
    AFHTTPRequestOperationManager *manager            = [AFHTTPRequestOperationManager manager];
    manager.requestSerializer                         = [AFJSONRequestSerializer serializer];
    manager.responseSerializer.acceptableContentTypes = [manager.responseSerializer.acceptableContentTypes setByAddingObject:@"text/html"];
    
    
    // 设置超时时间
    [manager.requestSerializer willChangeValueForKey:@"timeoutInterval"];
    manager.requestSerializer.timeoutInterval = 10.f;
    [manager.requestSerializer didChangeValueForKey:@"timeoutInterval"];
    
    
    AFHTTPRequestOperation *httpOperation = [manager POST:URLString
                                               parameters:parameters
                                                  success:^(AFHTTPRequestOperation *operation, id responseObject) {
                                                      if (success) {
                                                          success(operation, responseObject);
                                                      }
                                                  }
                                                  failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                                      if (failure) {
                                                          failure(operation, error);
                                                      }
                                                  }];
    
    return httpOperation;
}