正则表达式< span>标签 [英] regex for <span> Tag

问题描述

我想写一个跳过产品ID的正则表达式

I want to write a regular expression that skip product id

<span class="Price" id="product-id-453">34.65</span>

<span class="Price" id="product-id-553">343.65</span>

Regex regex = new Regex("<span class="\Price\" id="553">(.*)</span>");

我遇到了问题在span标记的id部分中

I am having problem in id part of span tag

推荐答案

问题是ID553的硬编码，它将为id453失效。您也可以通过规范Id部分来忽略它。试试这个

The problem is the hardcoding of the ID "553" which will faild for id "453". You can ignore it by regularizing Id part as well. Try this

<span class="Price" id="\d+">(.*)<\/span>

您可以尝试

You might try

Regex regex = new Regex(@"<span class=""Price"" id=""\d+"">(.*)</span>");

除了_Asif_所说的，更改代码以及：

in addition to what _Asif_ says, change you code as well:

Regex regex = new Regex("<span class="\Price\" id="553">(.*)</span>");

反斜杠位置错误，无法编译：

Has backslashes in the wrong place, and won't compile:

Regex regex = new Regex("<span class=\"Price\" id=\"\d{3}\">(.*)</span>");

我们的id是字母数字产品-id-543

如果您要使用正则表达式，那么您需要能够对它们进行至少基本的更改！

"f our id is alpha-numeric product-id-543"
If you are going to use regexes, then you need to be able to make at least basic changes to them!

Regex regex = new Regex("<span class=\"Price\" id=\"\.+?\">(.*)</span>");

应该这样做。



获取 Expresso [ ^ ] - 这是free，它检查并生成正则表达式。

Should do it.

Get a copy of Expresso[^] - it's free, and it examines and generates Regular expressions.

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