在ISO-8859-1中编码NSURL

我有一个包含TextFields的ViewController，我需要将这些值发送到专用的HTTP服务。 我主要担心的是编码类型，因为这个应用程序是法语的，可能包含一些重音符号（’é’，’è’等等…）但我还需要正确格式化我的字段，因为它可能包含空格好….

我尝试使用不同的方法，但我仍然在服务器端编码错误。

这是我的代码示例：

let url_to_request = "http://11.22.33.44:8080/SRV/addRepertoire" var params = "owner=\(User.sharedInstance.email)&adresse=\(adresse.text!)&nom=\(nom.text!)&telephone=\(telephone.text!)&commentaires=\(commentaires.text!)" //trying to encode in ISO-8859-1 let dt = NSString(CString: params, encoding: NSISOLatin1StringEncoding) //preparing string to be used in a NSURL let final_url = dt!.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet()) print("URL loadRepertoire: \(url_to_request+"?"+final_url!)") 

例如，字段“nom”包含“bébé”，其编码为“b％C4％82％C5％A0b％C4％82％C5％A0”，而我的服务器期望“b％E9b％E9”

EDIT2：

我试着使用以下内容：

  let url_to_request = "http://11.22.33.44:8080/SRV/addRepertoire" let params = "owner=\(User.sharedInstance.email)&adresse=\(adresse.text!)&nom=\(nom.text!)&telephone=\(telephone.text!)&commentaires=\(commentaires.text!)" let tmp_url = url_to_request + "?" + params let final_url = tmp_url.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())! print("URL addRepertoire: \(final_url)") 

但结果仍然是：

 b%C3%83%C2%A9b%C3%83%C2%A9, diplayed bébé instead of bébé 

Answer 1

stringByAddingPercentEncodingWithAllowedCharacters总是使用UTF-8表示，所以我担心你可能需要自己动手。

 extension String { func stringByAddingPercentEncodingForISOLatin1() -> String? { let allowedCharacterSet = NSCharacterSet(charactersInString: "0123456789" + "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + "abcdefghijklmnopqrstuvwxyz" + "_-.~" + "=&" //You'd better remove this and encode each param. ) if let data = self.dataUsingEncoding(NSISOLatin1StringEncoding) { var result = "" for i in 0..(data.bytes)[i] if ch >= 0x80 || !allowedCharacterSet.characterIsMember(unichar(ch)) { result += String(format: "%%%02X", ch) } else { result.append(UnicodeScalar(ch)) } } return result } else { return nil } } } "bébé".stringByAddingPercentEncodingForISOLatin1()! //->"b%E9b%E9" 

Answer 2

这是Swift 4中的解决方案：

 extension String { // Url percent encoding according to RFC3986 specifications // https://tools.ietf.org/html/rfc3986#section-2.1 func urlPercentEncoded(withAllowedCharacters allowedCharacters: CharacterSet, encoding: String.Encoding) -> String { var returnStr = "" // Compute each char seperatly for char in self { let charStr = String(char) let charScalar = charStr.unicodeScalars[charStr.unicodeScalars.startIndex] if allowedCharacters.contains(charScalar) == false, let bytesOfChar = charStr.data(using: encoding) { // Get the hexStr of every notAllowed-char-byte and put a % infront of it, append the result to the returnString for byte in bytesOfChar { returnStr += "%" + String(format: "%02hhX", byte as CVarArg) } } else { returnStr += charStr } } return returnStr } } 

用法：

 "aouäöü!".urlPercentEncoded(withAllowedCharacters: .urlQueryAllowed, encoding: .isoLatin1) // Results in -> "aou%E4%F6%FC!"