前幾天介面需要我向伺服器傳送一個Json資料，但是利用AFNetWorking中的AFHTTPSessionManager傳送到伺服器，介面接收的串一直是URL編碼過後的串，無法和安卓統一，於是換了另一種方法，利用AFHTTPSessionManager的子類AFHTTPRequestOperation設定UTF－8編碼才成功，用AFHTTPSessionManager設定UTF-8編碼是無效的，不知道其中哪個環節出了問題，斷電追到裡面，發現設定無效。

NSDictionary * dict = @{@"id":@"12312312",@"name":@"test"};
            NSData * data = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error
 
:nil];
            NSString * json = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding];
            //字典轉Json串 為了方便，避免自己拼串出錯]]
            NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:urlString]];
            [request setHTTPMethod:@"POST"];
            [request setHTTPBody:[json dataUsingEncoding:NSUTF8StringEncoding]];

            [request setValue:@"text/html;charset=utf-8"
 
 forHTTPHeaderField:@"Content-Type"];
            AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
            //]]
            operation.responseSerializer = [AFJSONResponseSerializer serializer];
            //]]
            [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
                //成功]]
            } failure:^(AFHTTPRequestOperation *operation, NSError *error
 
) {
                //失敗
            }];
            [operation start];