Swift UTF8编码和非UTF8字符 [英] Swift UTF8 encoding and non UTF8 character

问题描述

我有一些来自json文件的文本.在本文中，我应用了UTF8编码，但是该编码器无法识别非标准字符àèìòù，并且它是大写字符，是否有一种方法可以净化我的字符串?

I've a some text from json file. In this text I've applied UTF8 encode but this encoder don't recognize a non standard character àèìòù and it's capital char, is there a method to purify my string?

我的功能:

func stringToUTF8String (stringaDaConvertire stringa: String) -> String {
    let encodedData = stringa.dataUsingEncoding(NSUTF8StringEncoding)!
    let attributedOptions = [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType]
    let attributedString = NSAttributedString(data: encodedData, options: attributedOptions, documentAttributes: nil, error: nil)!
    //println(attributedString.string)
    return attributedString.string
}

推荐答案

我找到了解决方案.

UTF8采用8位表ASCII表，而UTF16采用16位ASCII表，通过将函数修改为以下方法，解决方案很简单:

The UTF8 take 8 bit of table ASCII, and the UTF16 take 16 bit ASCII table, the solution is simple by modifying my function to:

func stringToUTF16String (stringaDaConvertire stringa: String) -> String {
    let encodedData = stringa.dataUsingEncoding(NSUTF16StringEncoding)!
    let attributedOptions = [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType]
    let attributedString = NSAttributedString(data: encodedData, options: attributedOptions, documentAttributes: nil, error: nil)!
    //println(attributedString.string)
    return attributedString.string
}

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