编码的 NSDATA UTF8 JSON，在 iOS 中使用重音字符

Question

我向用 JSON 回答我的网络服务器发出 post 请求，这是响应的标头：

Cache-Control: private
Content-Length: 826
Content-Type: application/json; charset=utf-8
Date: Wed, 04 Feb 2015 05:53:59 GMT
Server: Microsoft-IIS/8.5
Set-Cookie: ASP.NET_SessionId=0w0mile5232yoqqdlcdomwgf; path=/; HttpOnly
X-Aspnet-Version: 4.0.30319
X-Powered-By: ASP.NET

我解析数据响应（NSURLConnection）并序列化json：

NSArray *arrayFromServer = [NSJSONSerialization JSONObjectWithData:dataFromServerArray options:NSJSONReadingAllowFragments error:&error];
NSLog(@"string: %@",arrayFromServer);

输出：

string: (
    {
    altitude = 0;
    battery = 100;
    "dev_last_contact" = 1423031944;
    "device_end_licence" = 1430398189;
    "device_type" = hw;
    "email_notification" = 0;
    "end_user_type" = 0;
    "fstk_cnt" = 15;
    "fstk_ts" = 0;
    heading = 0;
    id = 62;
    imei = 0123456789APPLE;
    inversegeo = "gsm_position ";
    label = "TestUfffd";
    latitude = "45.503731";
    "licence_level" = 2;
    "licence_status" = valid;
    "licence_type" = 1;
    longitude = "11.90365";
    "md5_image" = CA137B2CB710BC15C87BC6A54D305A2B;
    "movement_alert" = 0;
    "on_movement" = 0;
    "pos_acy" = 1977;
    "push_notification" = 0;
    refresh = 30;
    "req_pos_cnt" = 0;
    "req_pos_ts" = 0;
    rup = "user_device_list.aspx";
    "secure_area" = 0;
    "serial_nr" = IOS;
    speed = 0;
    "text_notification" = 0;
    timestamp = 1423031944;
    "url_image" = "http://XXXXX.XXXX.XXXX.XXXX/AppImages/1422966751507_62.jpg";
}
)

然后我像这样创建对象数组：

devicesArray = [[NSMutableArray alloc] init];
for(NSDictionary *eachDevice in arrayFromServer)
{
    //NSLog(@"DEVICE: %@",eachDevice);
    Device *device = [[Device alloc] initWithJSONData:eachDevice];
    NSString *device_id = [NSString stringWithFormat:@"%ld",(long)[device deviceId]];
    [self.all_devices_id addObject:device_id];
    [devicesArray addObject:device];
}

我的目标很简单：

.h
@interface Device : NSObject
-(id)initWithJSONData:(NSDictionary*)data;
...
.m
-(id)initWithJSONData:(NSDictionary*)data{
self = [super init];
if(self){
    self.deviceId = [[data objectForKey:@"id"] integerValue];
    NSLog(@"data label : %@",[data objectForKey:@"label"]);
    self.label =  [data objectForKey:@"label"];
...

输出为：

data label : Test�

如您所见，"标签"在"Test\Ufffd"中转换，然后"测试"，但应该是"Testè"我对重音字符有问题，如何正确编码此字符串？

谢谢。

Answer 1

你的代码没有问题，因为 \Ufffd 是 unicode for 而不是 è。 表示您的服务器返回了错误的值。 è 的正确 Unicode 是 \U00e8 你可以在这里找到它，在这里找到它。我希望这将解决您的问题。

Answer 2

尝试

[[data objectForKey:@"label"] UTF8String]; 

以前

NSString *utf = [[data objectForKey:@"label"] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];