关于iPhone上URL的NSString字符无效的问题 [英] Question about character of NSString invalid in URL on iPhone

问题描述

我的某些http请求在网址中有空格，但iPhone无法识别。只要网址中有空格，我就必须将空格更改为％20。现在我必须将用户键入的消息发送到服务器，它可以拥有与用户一样多的空格。看起来我必须全部替换它们。（stringByReplacingOccurrencesOfString）

Some of my http request has 'space' in URL, but it is not recognized by iPhone. I have to change 'space' to '%20' whenever there is a 'space' in the url. Now I have to send a message typed by the user to the server and it can have as many 'spaces' as the user like. It looks like I have to replace them all.(stringByReplacingOccurrencesOfString)

将'space'转换为'％20'是我偶尔会找到的。我的问题是，iPhone上的网址不能直接使用NSString中的哪些其他字符？

Convert 'space' to '%20' is the one I occasionally find. My question is which of the other characters in NSString cannot be straightly used by url on iPhone?

推荐答案

我认为这是更好的方法：

I think this is a better approach:

NSString* escapedUrl = [originalUrl   
stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

如果您想了解URL编码的工作原理，请看一下网址。

If you want to understand how URL encoding works, take a look at this URL.

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