根据Task强制转换：

NSHTTPURLResponse *httpURLResponse = (NSHTTPURLResponse*)task.response;

NSDictionary *allHeaderFieldsDict = httpURLResponse.allHeaderFields;

/**
 *  网络请求数据总方法
 *
 *  @param strUrl     请求网络地址和端口
 *  @param strApi     API接口
 *  @param parameters 请求参数
 *  @param strType    请求类型：GET，POST
 *  @param downloadProgress  请求完成数据的进度
 *  @param success    响应成功时调用的Block
 *  @param failure    响应失败时调用的Block
 *  @param isEncrypt  是否解密
 *  @param encryptKeyStr 解密密钥
 */
+ (void)SessionManagerWebData:(NSString *)strUrl andApi:(NSString *)strApi andParameters:(NSDictionary *)parameters andRequestType:(NSString *)strType andProgress:(WebDataResponseProgress)webDataDownloadProgress andSuccess:(WebDataResponseSuccess)success andFailure:(WebDataresponseFailure)failure andIsEncrypt:(BOOL)isEncrypt andEncryptKeyStr:(NSString *)encryptKeyStr {
    AFHTTPSessionManager * sessionManager = [AFHTTPSessionManager manager];
    sessionManager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/xml"];
    sessionManager.requestSerializer = [AFHTTPRequestSerializer serializer];
    sessionManager.responseSerializer = [AFHTTPResponseSerializer serializer];
    
    // 设置编码
    [sessionManager.requestSerializer setValue:@"application/x-www-form-urlencoded; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
    
    sessionManager.requestSerializer.timeoutInterval = REQUEST_TIMEOUT_VALUE;
    
    if (![strApi hasPrefix:@"/"]) {
        strApi = [NSString stringWithFormat:@"/%@", strApi];
    }
    NSString *requestUrl = [NSString stringWithFormat:@"%@%@", strUrl, strApi];
    
    if ([strType isEqual:REQUEST_GET]) {
        [sessionManager GET:requestUrl parameters:parameters progress:^(NSProgress * _Nonnull downloadProgress) {
            MYLOG(@"currentThread == %@", [NSThread currentThread]);
            if (webDataDownloadProgress != nil) {
                webDataDownloadProgress((float)downloadProgress.completedUnitCount/(float)downloadProgress.totalUnitCount);
            }
        } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            // 解析数据
            NSDictionary *dataDict = responseObject;
            if (isEncrypt) {
                // data 转成 字符串
                NSString *string = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
                // 解码
//                NSString *string2 = [AESCrypt decrypt:string password:encryptKeyStr];
                dataDict = [string mj_JSONObject];
            }
            
            int resultCode = [[dataDict objectForKey:RESULT_STATUS] intValue];
            if (resultCode == RESULT_RIGHT) {
                success([dataDict objectForKey:RESULT_DATA]);
            } else {
                [MBProgressHUD hideHUD];
                [MBProgressHUD show:[dataDict objectForKey:RESULT_MESSAGE] icon:nil view:nil];
            }

        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
            if (failure != nil) {
                failure(error);
            }
            MYLOG(@"error: %@", error);
            [MBProgressHUD hideHUD];
            [MBProgressHUD showError:@"网络异常，请稍后重试！"];
        }];
        
    } else if ([strType isEqual:REQUEST_POST]) {
        [sessionManager POST:requestUrl parameters:parameters progress:^(NSProgress * _Nonnull uploadProgress) {
            if (webDataDownloadProgress != nil) {
                webDataDownloadProgress((float)uploadProgress.completedUnitCount/(float)uploadProgress.totalUnitCount);
            }
        } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
            NSHTTPURLResponse *httpURLResponse = (NSHTTPURLResponse*)task.response;
            NSDictionary *dictTTTTTEMP = httpURLResponse.allHeaderFields;
            // 解析数据
            NSDictionary *dataDict = responseObject;
            if (isEncrypt) {
                // data 转成 字符串
                NSString *string = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
                // 解码
//                NSString *string2 = [AESCrypt decrypt:string password:AESC_PASSWORD];
                dataDict = [string mj_JSONObject];
            }
            if (dataDict == nil) {
                [MBProgressHUD hideHUD];
                if (failure != nil) {
                    failure(nil);
                }
                MYLOG(@"returnNull:%@", requestUrl);
                // 1. 提示1
//                [MBProgressHUD show:ERROR_SERVERS_WRONG icon:nil view:nil];
                return;
            }
            
            int resultCode = [[dataDict objectForKey:RESULT_STATUS] intValue];
            if (resultCode == RESULT_RIGHT) {
                id object = [dataDict objectForKey:RESULT_DATA];
                if (object == nil || [object isKindOfClass:[NSNull class]] || [object isEqual:@""]) {
                    success(nil);
                } else {
                    success([dataDict objectForKey:RESULT_DATA]);
                }
            } else {
                [MBProgressHUD hideHUD];
                if (failure != nil) {
                    failure(nil);
                }
                // 2. 提示2
                [MBProgressHUD show:[dataDict objectForKey:RESULT_MESSAGE] icon:nil view:nil];
            }

        } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
            if (failure != nil) {
                failure(error);
            }
            MYLOG(@"error: %@", error);
            [MBProgressHUD hideHUD];
            // 3. 提示3
//            [MBProgressHUD showError:@"网络异常，请稍后重试！"];

        }];
    }
}