NSString编码特殊字符如！@＃$％^& [英] NSString encoding special characters like !@#$%^&

问题描述

我如何编码我的NSString所以所有的特殊字符例如&

How can i encode my NSString so all the special character for example & becomes &amp and ' becomes &apos?

我不知道编码是否是正确的词，所以如果我错了，请纠正我。

I am not sure if encoding is the right word for it so please correct me if I am wrong.

感谢

推荐答案

你所说的是 HTML实体 。

What you are talking about is called HTML Entities.

存在一个声明解决此问题的类别： NSString + HTML 。

There exists a category claiming to solve this: NSString+HTML.

对于 URL Escaping （当我们使用它时）使用：

For URL Escaping (while we're at it) use this:

@nterface NSString (Escaping)

- (NSString *)percentEscapedString
- (NSString *)percentUnescapedString

@end

@implementation NSString (Escaping)

- (NSString *)percentEscapedString {
    return [self stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
}

- (NSString *)percentUnescapedString {
    return [self stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
}

@end

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编辑：由于Dave在我的参考解决方案中指出了弱点，以下是一些与其他解决方案相关的问题：

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Edit: As Dave pointed out weaknesses in my references solution, here are some related questions with lots of other solutions:

• 目标C HTML转义/取消转义


• Objective-C / Cocoa Touch中的HTML字符解码

• Objective C HTML escape/unescape
• HTML character decoding in Objective-C / Cocoa Touch

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