{

    NSError *parseError = nil;
    NSData *jsonData = http://www.mamicode.com/[NSJSONSerialization dataWithJSONObject:dic options:NSJSONWritingPrettyPrinted error:&parseError];
    return [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];

}

************************************

self.dataDic = [NSDictionarydictionaryWithDictionary:responseData[@"data"]];

            NSString *jsonString = responseData[@"data"][@"visitRemarks"];
            NSError *err;
            NSData *jsonData = http://www.mamicode.com/[jsonString dataUsingEncoding:NSUTF8StringEncoding];
            noteArray = [NSJSONSerialization JSONObjectWithData:jsonData  options:NSJSONReadingMutableContainers error:&err];