XPath解析“SRC”来自IMG标签？ [英] XPath to Parse "SRC" from IMG tag?

问题描述

  // img [@ class ='照片大'] 
  

例如它会返回这个：

 < img src =http://example.com/img.jpgclass ='photo-large'/> 
  

但我只需要SRC网址（ http://example.com/img.jpg ）。任何帮助？

解决方案

你很亲近回答​​这个问题，我有点不愿意为你回答。然而，下面的XPath应该提供你想要的（当然，源代码是XHTML）。

  // img [@ class ='photo-large'] / @ src 
  

有关更多提示，请查看 W3学校。他们有很好的教程，也很好的参考。

Right now I successfully grabbed the full element from an HTML page with this:

//img[@class='photo-large']

for example it would return this:

<img src="http://example.com/img.jpg" class='photo-large' />

But I only need the SRC url (http://example.com/img.jpg). Any help?

解决方案

You are so close to answering this yourself that I am somewhat reluctant to answer it for you. However, the following XPath should provide what you want (provided the source is XHTML, of course).

//img[@class='photo-large']/@src

For further tips, check out W3 Schools. They have excellent tutorials on such things and a great reference too.

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