ios - 使用 swift 3 解码字符串

Question

我在网络服务响应中得到以下编码字符串

  \U00e0\U00aa\U0095\U00e0\U00ab\U0083\U00e0\U00aa\U00aa\U00e0\U00aa\U00be \U00e0\U00aa\U0095\U00e0\U00aa\U00b0\U00e0\U00ab\U0080\U00e0\U00aa\U00a8\U00e0\U00ab\U0087 \U00e0\U00aa\U009f\U00e0\U00ab\U008b\U00e0\U00aa\U00a1 \U00e0\U00aa\U008f\U00e0\U00aa\U00aa\U00e0\U00ab\U008d\U00e0\U00aa\U00b2\U00e0\U00aa\U00bf\U00e0\U00aa\U0095\U00e0\U00ab\U0087\U00e0\U00aa\U00b6\U00e0\U00aa\U00a8 \U00e0\U00aa\U00a4\U00e0\U00aa\U00aa\U00e0\U00aa\U00be\U00e0\U00aa\U00b8\U00e0\U00ab\U008b. \U00e0\U00aa\U00a4\U00e0\U00ab\U008d\U00e0\U00aa\U00af\U00e0\U00aa\U00be\U00e0\U00aa\U0082 \U00e0\U00aa\U00aa\U00e0\U00ab\U008d\U00e0\U00aa\U00b0\U00e0\U00aa\U00b5\U00e0\U00aa\U00be\U00e0\U00aa\U00b8 \U00e0\U00aa\U00ae\U00e0\U00aa\U00be\U00e0\U00aa\U009f\U00e0\U00ab\U0087 \U00e0\U00aa\U008f\U00e0\U00aa\U0095 \U00e0\U00aa\U00a8\U00e0\U00aa\U00b5\U00e0\U00ab\U0080 \U00e0\U00aa\U00a4\U00e0\U00aa\U00aa\U00e0\U00aa\U00be\U00e0\U00aa\U00b8 \U00e0\U00aa\U009b\U00e0\U00ab\U0087

还有

àªà«àªªàª¾ àªàª°à«àª¨à« àªà«àª¡ àªàªªà«àªàªªà«àª\302²àª¿àªàªªà«àª\302²àª¿àª\303à«àª¶àª¨ તપાàપà«àª\302²àª¿àª\303à«àª¶àª¨ તપાà\302ª¸à«. તà«àª¯àª¾àª પà«àª°àªµàª¾àª¸ માàªà« àªàª નવૠતપાસ àªà«.

那么我如何在 swift 3 中解码这两个字符串。

在 json 中得到以下对象(Postman 输出)

 {

  "message": "કૃપા કરીને એપ્લિકેશન તપાસો. ત્યાં પ્રવાસ માટે એક નવી તપાસ છે.",

},
{

  "message": "કૃપા કરીને એપ્લિકેશન તપાસો. ત્યાં પ્રવાસ માટે એક નવી તપાસ છે.",

}

但在 xcode 中我得到了关注

"Notifications" : [
{

  "message" : "àªà«àªªàª¾ àªàª°à«àª¨à« àªà«àª¡ àªàªªà«àªàªªà«àª\302²àª¿àªàªªà«àª\302²àª¿àª\303à«àª¶àª¨ તપાàપà«àª\302²àª¿àª\303à«àª¶àª¨ તપાà\302ª¸à«. તà«àª¯àª¾àª પà«àª°àªµàª¾àª¸ માàªà« àªàª નવૠતપાસ àªà«.",

},
{

  "message" : "àªà«àªªàª¾ àªàª°à«àª¨à« àªà«àª¡ àªàªªà«àª²àª¿àªà«àª¶àª¨ તપાસà«. તà«àª¯àª¾àª પà«àª°àªµàª¾àª¸ માàªà« àªàª નવૠતપાસ àªà«.",

}

Answer 1

问题是您只是打印嵌套的 NSArray/NSDictionary 对象，它不能正确呈现 UTF8 字符串:

let originalJsonObject = try? JSONSerialization.jsonObject(with: data)

print("\(originalJsonObject)")                    // this will show the cryptic \U00ee\U00a0 ... result

这将显示很像您在问题中分享的文本:

...
message = "\U0a95\U0ac3\U0aaa\U0abe \U0a95\U0ab0\U0ac0\U0aa8\U0ac7 \U0a9f\U0acb\U0aa1 \U0a8f\U0aaa\U0acd\U0ab2\U0abf\U0a95\U0ac7\U0ab6\U0aa8 \U0aa4\U0aaa\U0abe\U0ab8\U0acb. \U0aa4\U0acd\U0aaf\U0abe\U0a82 \U0aaa\U0acd\U0ab0\U0ab5\U0abe\U0ab8 \U0aae\U0abe\U0a9f\U0ac7 \U0a8f\U0a95 \U0aa8\U0ab5\U0ac0 \U0aa4\U0aaa\U0abe\U0ab8 \U0a9b\U0ac7.";
...

但是如果你继续使用那个对象，你会发现实际上一切正常:

guard
    let json = originalJsonObject as? [String: Any],
    let notifications = json["Notifications"] as? [[String: Any]],
    let string = notifications[0]["message"] as? String else {
        print("problem parsing")
        return
}
print("\(string)")

这将显示:

કૃપા કરીને ટોડ એપ્લિકેશન તપાસો. ત્યાં પ્રવાસ માટે એક નવી તપાસ છે.

很明显，如何提取字符串的细节将取决于更广泛的 JSON 结构、您使用什么 API 来解析它等等，但它说明了这个想法。不要担心 NSDictionary 是如何显示的，而是继续获取​​ String 对象，您会发现 UTF8 字符串可以正常使用。