无法使用Xpath分析XML

本文关键字：分析 XML Xpath | 更新日期: 2023-09-27 18:28:45

我在解析XML文件时遇到问题。我设法使用xpath读取了一些示例xml文件，但无法读取我的xml文件。无论我输入什么作为xpath表达式，它都无法解析文件。

这是我试图读取的xml文件

<?xml version="1.0"?>
<WLANProfile xmlns="http://www.microsoft.com/networking/WLAN/profile/v1">
<name>dino</name>
<SSIDConfig>
   <SSID>
      <hex>64696E6F</hex>
      <name>dino</name>
   </SSID>
</SSIDConfig>
<connectionType>ESS</connectionType>
<connectionMode>auto</connectionMode>
<MSM>
   <security>
      <authEncryption>
         <authentication>open</authentication>
         <encryption>WEP</encryption>
         <useOneX>false</useOneX>
      </authEncryption>
      <sharedKey>
         <keyType>networkKey</keyType>
         <protected>true</protected>
         <keyMaterial>01000000D08C9DDF0115D1118C7A00C04FC297EB010000000C046798E62AF24993A8197E7DBF7BDC00000000020000000000106600000001000020000000E64B73274BEAB7199AB89DB1CFED12146D88E9B5EF36823E780F33E9B67E2CDC000000000E80000000020000200000002BF0125DD33F628A7D7B1C867298C62DEF53C6712E8ED4051491F317B0A1710A100000003748D54F3C408A3E076006C03174B10440000000BF822418926AF8663A6FE9619C34C765009EB9D8B23104FEBE049EB1E5B96F8BD61D3E8056885958616E5C50CE9FDF6DC4517B4405C0C45EA392327964301508</keyMaterial>
      </sharedKey>
   </security>
</MSM>
</WLANProfile>

例如，我想要获得keyMaterial。这是代码

string fileloc = String.Format("{0}/dino.xml", destination);
        label3.Text = fileloc; // path check
        XPathDocument doc = new XPathDocument(fileloc);
        XPathNavigator nav = doc.CreateNavigator();
        XPathExpression expr;
        expr = nav.Compile("/WLANProfile/MSM/security/sharedKey/keyMaterial");
        XPathNodeIterator iterator = nav.Select(expr);
        listBox1.Items.Clear();
        try
        {
            while (iterator.MoveNext())
            {
                XPathNavigator nav2 = iterator.Current.Clone();
                listBox1.Items.Add("keyMaterial: " + nav2.Value);
            }
        }
        catch (Exception ex)
        {
            label2.Text = ex.Message;

那么，问题出在哪里呢？无论我输入什么作为导航，listBox都是空的。编写

无法使用Xpath分析XML

请尝试以下代码，我已经检查过了，它正在工作：

XPathDocument doc = new XPathDocument(fileloc);
XPathNavigator nav = doc.CreateNavigator();
XmlNamespaceManager manager = new XmlNamespaceManager(nav.NameTable);
manager.AddNamespace("bk", "http://www.microsoft.com/networking/WLAN/profile/v1");

XPathNodeIterator iterator = nav.Select("/bk:WLANProfile/bk:MSM/bk:security/bk:sharedKey/bk:keyMaterial", manager);

如果您想使用XDocument

XDocument xDoc = XDocument.Load(.....);
XNamespace ns = XNamespace.Get("http://www.microsoft.com/networking/WLAN/profile/v1");
var key = xDoc.Descendants(ns+"keyMaterial").First();
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