URL编码和HTML编码NSStrings [英] URL-encoding and HTML-encoding NSStrings

问题描述

他们是一种编码/解码HTML和URL的方法（在Xcode中，使用Objective-C）？

  [NSString stringWithContentsOfFile：<＃（NSString *）path＃>编码：其中＃（NSStringEncoding）ENC＃>错误：<＃（NSError **）错误＃>] 
  

工作我的预期我以为会转换特殊字符，如<到等效的HTML实体，即<在这种情况下

以下是对与此主题相关的w3school链接（一般）的引用：

< a href =http://www.w3schools.com/tags/ref_urlencode.asp =nofollow noreferrer> HTML URL编码参考

HTML实体参考

感谢预期。

解决方案

使用给定的编码返回接收者的表示，以确定转换接收器所需的百分比转义一个合法的URL字符串。

   - （NSString *）stringByAddingPercentEscapesUsingEncoding：（NSStringEncoding）encoding 
  

和

返回一个新的字符串，通过在接收方中替换所有百分号转义，匹配的字符由给定的编码确定。

   - （NSString *）stringByReplacingPercentEscapes usingEncoding：（NSStringEncoding）encoding 
  

Is their a method to encode/decode HTML and URL (in Xcode, using Objective-C)?

[NSString stringWithContentsOfFile:<#(NSString *)path#> encoding:<#(NSStringEncoding)enc#> error:<#(NSError **)error#>]

This doesn't seem to work how i expected. I thought it will convert special characters like "<" to equivalent HTML entities i.e. "<" in this case.

Here's a reference to the w3school link related to this topic (general):

HTML URL Encoding Reference

HTML Entities Reference

Thanking in anticipation.

解决方案

Returns a representation of the receiver using a given encoding to determine the percent escapes necessary to convert the receiver into a legal URL string.

- (NSString *)stringByAddingPercentEscapesUsingEncoding:(NSStringEncoding)encoding

and

Returns a new string made by replacing in the receiver all percent escapes with the matching characters as determined by a given encoding.

- (NSString *)stringByReplacingPercentEscapesUsingEncoding:(NSStringEncoding)encoding

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