NSURLConnection : JSON text did not start with array or object and option to allow fragments not set,如何解决?

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我从NSURLConnection ConnectionDidFinishLoding获得以下错误

"The operation couldn’t be completed. (Cocoa error 3840.)" (JSON text did not start with array or object and option to allow fragments not set.) UserInfo=0x7b71dbb0 {NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}

我使用了以下代码:

-(void)connectionDidFinishLoading:(NSURLConnection *)connection 
{
    NSError *error;
    id json = [NSJSONSerialization JSONObjectWithData:_urlData options:kNilOptions error:&error];

    if (error) {
        NSLog(@"Loading Error = %@",error);
    }
}

以下是我的JSON答复:

{  
   "result":"success",
   "details":[  
      {  
         "id":"11531",
         "user_name":"",
         "fullname":"aa",
         "email_address":"aa",
         "user_type":"a",
         "server":"",
         "server_email":"",
         "server_password":"",
         "password":"0cc175b9c0f1b6a831c399e269772661",
         "clean_password":"a",
         "gender":"",
         "ceo_name":"",
         "ceo_picture":"",
         "ceo_contact":"",
         "ceo_contact_pic":"",
         "company_name":"a",
         "freight_company_name":"",
         "freight_company_email":"",
         "company_url":"11531",
         "company_keyword":"",
         "company_description":"",
         "address":"",
         "province":"",
         "postal_code":"",
         "phone_number":"",
         "fax_number":"",
         "website":"",
         "city":"",
         "b_category":"",
         "main_products":"",
         "cellphone":"a",
         "country":"0",
         "states":"",
         "company_status":"1",
         "joindate":"0",
         "varificationcode":"",
         "activation_status":"1",
         "new_email":"",
         "email_activation_status":"",
         "facebook_url":"",
         "twitter_url":"",
         "company_update_status":"0",
         "last_access_date":"0000-00-00",
         "ip_address":"",
         "ip_block":"0",
         "user_id":null,
         "company_id":null,
         "video_url":"",
         "oauth_uid":"",
         "oauth_provider":"",
         "get_color":"",
         "comp_name_size":"13",
         "member_type":"",
         "mark_status":"1",
         "ip_address_intension":"",
         "fbId":"",
         "twitterId":"",
         "profile_picture":"",
         "device_token":""
      }
   ]
}

我尝试过所有的解决方案,在StackOverflow,但在静脉。

提问于
用户回答回答于

记录您正在获取的实际数据,而不是字符串,并检查第一个字节。

用户回答回答于

将选项值设置为NSJSONReadingAllowFragments而不是kNilOptions我已经测试了您的JSON,并将其保存在本地文件中

id json = [NSJSONSerialization JSONObjectWithData:contentOfLocalFile
                                                options:NSJSONReadingAllowFragments
                                                  error:&deserializingError];

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