Ios （Obj-C）从NSHTTPPURLRESPONSE（allHeaderFields）用字典中的重音符号解码JSON

我通过以下方式从NSHTTPPURLResponse接收头字段作为NSDictionary：

NSHTTPURLResponse *response = ((NSHTTPURLResponse *)[task response]);
NSDictionary *rootDictionary = [response allHeaderFields];

NSError * err;
NSData * jsonData = [NSJSONSerialization  dataWithJSONObject:[response allHeaderFields] options:0 error:&err];

id rootObject = [NSJSONSerialization
                   JSONObjectWithData:jsonData
                              options:0
                                error:&error];

NSDictionary *rootDictionary = rootObject;

但在本词典的值中有重音符号，当我试图显示为Alert时，会出现符号，而不是带有重音的字母。我用这种方式：

NSHTTPURLResponse *response = ((NSHTTPURLResponse *)[task response]);
NSDictionary *rootDictionary = [response allHeaderFields];

NSError * err;
NSData * jsonData = [NSJSONSerialization  dataWithJSONObject:[response allHeaderFields] options:0 error:&err];

id rootObject = [NSJSONSerialization
                   JSONObjectWithData:jsonData
                              options:0
                                error:&error];

NSDictionary *rootDictionary = rootObject;

在我的标题中，我收到以下信息：

headers {
    "Cache-Control" = "no-cache";
    Connection = "Keep-Alive";
    "Content-Language" = en;
    "Content-Length" = 30;
    "Content-Type" = "text/plain; charset=utf-8";
    Date = "Thu, 10 Dec 2015 15:47:07 GMT";
    Expires = "-1";
    "Keep-Alive" = "timeout=5, max=100";
    Pragma = "no-cache";
    Server = "xxxxxxxxxx";
    "X-AspNet-Version" = "xxxxx";
    "X-Error" = "Par\U00c3\U00a1metros faltantes";
    "X-Powered-By" = "xxxxxx";
}

我在警报中显示X错误值：

NSString *description = [rootDictionary objectForKey:@"X-Error"];
UIAlertView *alert = [[UIAlertView alloc]initWithTitle:@"Title of my alert" message:description delegate:nil cancelButtonTitle:NSLocalizedString(@"Ok", nil) otherButtonTitles:nil];
          [alert show];

这是我的结果：

法尔坦茨地铁站

这是我在Xcode（NSLog）中的字典日志：

有其他解决方案吗？

回答：

我可以这样做：

NSDictionary *headerField = [response allHeaderFields];
NSString *description = [headerField valueForKey:@"X-Error"];
NSString *correctString = [NSString stringWithCString:[description cStringUsingEncoding:NSISOLatin1StringEncoding] encoding:NSUTF8StringEncoding];

---

重要元素是cstringusingencode:nsisolatin1stringecoding。给我正确的口音

您需要更新您的问题，并提供有关您拥有的数据和看到的结果的更多详细信息。Ready@rmaddy，我使用

rootDictionary

的

NSLog

输出更新您的问题，并显示用于从

rootDictionary

获取警报的代码。