你如何将HTML转换为纯文本？ [英] How do you convert Html to plain text?

问题描述

我有存储在表中的HTML片段。的不是整个页面，没有任何标记或类似，只是基本的格式。的

I have snippets of Html stored in a table. Not entire pages, no tags or the like, just basic formatting.

我想是能够显示HTML作为纯文本，的没有格式的，一个给定的页面上。（实际上只是第30 - 50个字符，但是这是很容易位）

I would like to be able to display that Html as text only, no formatting, on a given page (actually just the first 30 - 50 characters but that's the easy bit).

我如何使用HTML中的文本转换成字符串连胜文？

How do I place the "text" within that Html into a string as straight text?

所以这块code的。

<b>Hello World.</b><br/><p><i>Is there anyone out there?</i><p>

变成了：

您好世界。有没有人在那里？

Hello World. Is there anyone out there?

推荐答案

如果你在谈论的标签剥离，这是比较简单的，如果你不担心这样的事情＆LT;脚本＆GT ; 标记。如果你需要做的就是显示没有标记文本可以完成与常规的前pression：

If you are talking about tag stripping, it is relatively straight forward if you don't have to worry about things like <script> tags. If all you need to do is display the text without the tags you can accomplish that with a regular expression:

<[^>]*>

如果你担心＆LT;脚本＆GT; 标签之类的，那么你就需要一些更强大的然后定期EX pressions因为你需要跟踪状态，omething更像是一个上下文无关文法（CFG）。 Althought你也许能完成它左到右或非贪婪匹配。

If you do have to worry about <script> tags and the like then you'll need something a bit more powerful then regular expressions because you need to track state, omething more like a Context Free Grammar (CFG). Althought you might be able to accomplish it with 'Left To Right' or non-greedy matching.

如果您可以使用普通的前pressions有很多网页那里有良好的信息：

If you can use regular expressions there are many web pages out there with good info:

• http://weblogs.asp.net/rosherove/archive/2003/05/13/6963.aspx


• http://www.google.com/search?hl=en&q=html+tag+stripping+&btnG=Search

如果你需要一个CFG我会建议使用第三方工具的更复杂的行为，不幸的是我不知道一个好建议的。

If you need the more complex behaviour of a CFG I would suggest using a third party tool, unfortunately I don't know of a good one to recommend.

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