Question

鉴于我有以下xml：

<div id="Main">
    <div class="quote">
        This is a quote and I don't want this text
    </div> 
    <p>
        This is content.
    </p>
    <p>  
        This is also content and I want both of them
    </p>
</div>

是否有“XPath”来帮助我选择 div＃Main 的内部文字作为单个节点，但必须排除任何 div.quote 。

我只想要文字：“这是内容。这也是内容，我想要他们两个”

提前致谢

以下是测试XPath的代码，我使用.NET和HtmlAgilityPack，但我相信xPath应该适用于任何语言

[Test]
public void TestSelectNode()
{
    // Arrange 
    var html = "<div id=\"Main\"><div class=\"quote\">This is a quote and I don't want this text</div><p>This is content.</p><p>This is also content and I want both of them</p></div>";
    var xPath = "//div/*[not(self::div and @class=\"quote\")]/text()";

    var doc = new HtmlDocument();
    doc.LoadHtml(html);

    // Action
    var node = doc.DocumentNode.SelectSingleNode(xPath);

    // Assert
    Assert.AreEqual("This is content.This is also content and I want both of them", node.InnerText);
}

测试失败显然是因为xPath仍然不正确。

Test 'XPathExperiments/TestSelectNode' failed:
    Expected values to be equal.

    Expected Value : "This is content.This is also content and I want both of them"
    Actual Value   : "This is content."

Answer 1

我认为没有XPath可以将此作为单个节点，因为您尝试获取的值不是单个节点。有没有理由你不能这样做？

StringBuilder sb = new StringBuilder();
// Action
var nodes = doc.DocumentNode.SelectNodes(xPath);
foreach(var node in nodes)
{
   sb.Append(node.InnerText);
}

// Assert
Assert.AreEqual("This is content.This is also content and I want both of them", 
                sb.ToString());

Answer 2

你想要div的任何孩子的文本，而不是div引用的类：

div/*[not(self::div and @class="quote")]/text()

Answer 3

没有XPath可以为您提供组合的字符串值，因为XPath仅选择节点对象，即使它们是文本节点，也仅选择节点对象。

看到您在有问题的<p>中有<div>个节点时，我会使用

div[@id='Main']/p/text()

会在<p>中的<div id="Main">元素中生成文本节点列表。在这些内容之间进行迭代并串联文本内容应该很简单。

XPath - 选择所选子节点的文本

3 个答案: