我从NSURLConnection connectionDidFinishLoading
收到以下错误“操作无法完成。(Cocoa error 3840.)”(JSON文本 没有从数组或对象和选项开始,不允许片段 设置。)UserInfo = 0x7b71dbb0 {NSDebugDescription = JSON文本没有启动 使用数组或对象和选项来允许未设置片段。}
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回复:
{
"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":""
}
]
}
我已尝试过stackOverflow中的所有解决方案,但仍然是静脉。
答案 0 :(得分:26)
将选项值设置为NSJSONReadingAllowFragments
而不是kNilOptions
我已经测试了你的JSON将它带到了一个本地文件
id json = [NSJSONSerialization JSONObjectWithData:contentOfLocalFile
options:NSJSONReadingAllowFragments
error:&deserializingError];
答案 1 :(得分:1)
NSLog您获取的实际数据,而不是字符串,并检查第一个字节。 JSONSerializer没有找到{或[作为第一个字符,所以你可能有一些零字节,或字节顺序标记,或者其他一些不可见的字符。
答案 2 :(得分:0)
除了Janmenjaya的回答,我想补充一点: -
我在不同的API中遇到过两次这个问题。我每次遇到的问题是
请确保这些案件。