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我对《人权行动计划》略感新,理解大多数基本内容,但我对某个具体问题感到有些麻烦。

I am attempting to parse a Motley Fool page and return the source of the image for the caps score of a stock.

For example: if you look at the source for the page: http://caps.fool.com/Ticker/SLT.aspx I want the source for http://g.foolcdn.com/art/ratings/stars/trans/5stars-trans-lg.png

我只想到的是,如果可能的话,那是 follows。

I am currently working with:

xpath = "//div[@class= subtle marginT ]"

然而,这并没有恢复。我知道,它可能要求很多,但如果你感到要回答的话,我也非常赞赏迅速提出答案,因为我想要学习亚太伙伴关系,而不只是让这个问题发挥作用。

Answer 1

Based on your URL this worked for me:

var imageNode = doc.DocumentNode.SelectSingleNode("//table[@id= tickerStats ]/tbody/tr/td/img");
string imageText = imageNode.Attributes["src"].Value;

Basically just grabbing the closest element that has an id, then walking the tree down to where you want to be.

或者,这也会奏效,似乎不太清洁(因为只要只有一个形象,你就没有真正地关注桌面上的多功能结构):

var statsNode = doc.DocumentNode.SelectSingleNode("//table[@id= tickerStats ]");
var imageNode = statsNode.SelectSingleNode(".//img");
string imageText = imageNode.Attributes["src"].Value;

Answer 2

Use:

//table[@id= tickerStats ]/tbody/tr/td/img/@src

This selects any attribute named src of any element named img that is a child of a td that is a child of a tr that is a child of a tbody that is a child of any table in the document, that has an id attribute with value tickerStats .

www.un.org/Depts/DGACM/index_spanish.htm 如果你只需要这一属性(假定以上XPath的表述选择了单一属性术语),则使用:

string(//table[@id= tickerStats ]/tbody/tr/td/img/@src)

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