在XPath语法中,可以使用contains函数来匹配class属性值包含空格的元素。以下是使用XPath定位class属性值包含空格的元素的示例代码: tree=etree.HTML(html)elements=tree.xpath("//div[contains(@class, 'class-with-space')]") 1. 2. 这里使用lxml库的etree模块将网页源代码解析为一个树状结构,然后使用XPath的contai...
test 如果是用xpath('//div[@class="a"]') 会取不到这里面的值; 可以用如下的表达式: xpath('//div[contains(@class,"a")]') #它会取得所有class为a的元素 或者 xpath('//div[contains(@class,"a") and contains(@class,"b")]') #它会取class同时有a和b的元素 如果没记错的话可以这么来: ...
"""items= response.xpath('//div[contains(@class,"view_fields")]') 回到顶部 相反:不包含指定的属性或值 如果查找某个属性值是否包含或不包含指定的属性或值时:结合Xpath路径来提取循环列表中的一个HTML标签的InnerText,提取的时候需要判断是这个标签的class属性是否包含某个指定的属性值,利用Xpath的contains可以...
最近,我做了很多工作来实现一个同时支持XPath和CSS 3的解析器,令我惊讶的是:它们俩在某些方面上非常相似,而在另一些方面上又完全不同.不同的地方有,CSS是用来配合HTML工作的,可以使用#id来根据ID获取元素,以及使用.class来根据class获取元素.这些用XPath实现的话都不会那么简洁,反过来呢,XPath可以使用..来返回到...
上表中错误的XPath: //*[contains(@class,'foo')] 1. 我实现的写法是: //*[@class='foo' or contains(@class,' foo ') or starts-with(@class,'foo ') or substring(@class,string-length(@class)-3)=' foo'] 1. 比起CSS的.foo,真的是好复杂,我来解释一下,一个元素的class属性中如果包含...
It contains polymorphic algorithms that operate on collections, "wrappers", which return a new collection backed by a specified collection, and a few other odds and ends. The methods of this class all throw a NullPointerException if the collections or class objects provided to them are null. ...
Namespace: System.Xml.XPath Assembly: System.Xml.XPath (in System.Xml.XPath.dll) Syntax C# 複製 [DebuggerDisplayAttribute("{debuggerDisplayProxy}")] public abstract class XPathNavigator : XPathItem, IXPathNavigable, IXmlNamespaceResolver The XPathNavigator type exposes the following members...
Returns anXmlReaderobject that contains the current node and its child nodes. ReplaceRange(XPathNavigator) Replaces a range of sibling nodes from the current node to the node specified. ReplaceSelf(String) Replaces the current node with the content of the string specified. ...
Provides the exception thrown when an error occurs while processing an XPath expression.C# 复制 public class XPathException : SystemExceptionInheritance Object Exception SystemException XPathException Derived System.ServiceModel.Dispatcher.XPathNavigatorException ...
The ItemsControl contains item containers of different types. For example, a Menu might have items that use both MenuItem and Separator objects as the item containers. You explicitly create the item containers to the ItemsControl. For more information about explicitly versus implicitly creating item ...