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json解析,同样的请求,有一个请求,无反应。纠结了几天,终于解决了。
error = Error Domain=NSCocoaErrorDomain Code=3840 "Unescaped control character around character 168." UserInfo={NSDebugDescription=Unescaped control character around character 168.}
报错信息如上:
这个原因,是因为服务器返回的字符串里面有换行符,所以我们要在接收到的数据里面,将换行符替换掉,然后再转模型。
但是,AFN解析,并没有提供原有的数据给我们(我没找),就直接去了error 的接口。
然后用session的dataTask,用字符串转它返回的data,则能够把数据读取出来,打印,果然有换行符。于是,改写了原来的方法,用session去代替。
NSString * url = infoCategoryM.listUrl; NSURL * URL = [NSURL URLWithString:url]; NSURLRequest * request = [NSURLRequest requestWithURL:URL]; NSURLSession * session = [NSURLSession sharedSession]; NSURLSessionDataTask * dataTask = [session dataTaskWithRequest:request completionHandler:^(NSData * _Nullable data, NSURLResponse * _Nullable response, NSError * _Nullable error) { NSString * str = [[NSString alloc]initWithData:data encoding:NSUTF8StringEncoding]; NSString * str2 = [str stringByReplacingOccurrencesOfString:@"\t" withString:@""]; str2 = [str2 stringByReplacingOccurrencesOfString:@"\n" withString:@""]; str2 = [str2 stringByReplacingOccurrencesOfString:@"\r" withString:@""]; ContentListArrM * contentListArrM = [[ContentListArrM alloc]initWithString:str2 error:nil]; [self.contentListArr removeAllObjects]; for (int i = 0; i < contentListArrM.contentList.count ; i++) { ContentListM * m = [contentListArrM.contentList objectAtIndex:i]; if (![XSDKResourceUtil xsdkstringIsnilOrEmpty:m.title]) { [self.contentListArr addObject:m]; } } dispatch_async(dispatch_get_main_queue(), ^{ [self.infoTableView reloadData]; self.selectedButton.selected = NO; selectedButton.selected = YES; self.selectedButton = selectedButton; NewsTableViewCell * cell = [self.infoTableView cellForRowAtIndexPath:[NSIndexPath indexPathForRow:1 inSection:0]]; cell.selected = YES; }); }]; [dataTask resume];
里面,替换掉了换行符等其他字符,然后再转模型。
This application is modifying the autolayout engine from a background thread, which can lead to engine corruption and weird crashes. This will cause an exception in a future release.
这个错误,是告诉我们,要在主线程里面更新UI。
error = Error Domain=NSCocoaErrorDomain Code=3840
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原文地址:http://www.cnblogs.com/tanglimei/p/5023937.html