使用VB.NET提取HTML节点的值

Question

I am trying to extract a value of a HTML node using VB.NET. 我正在尝试使用VB.NET提取HTML节点的值。

This is the form: 形式如下：

<html>
    <head>
        <title>Submit Form</title>
        <meta name="referrer" content="origin"/>
        <meta http-equiv="x-ua-compatible" content="IE=edge" />
    </head>
    <body onload="javascript:document.forms[0].submit()">
       <noscript>
            <p>
                <strong>Note:</strong> Since your browser does not support JavaScript, you must press the Resume button once to proceed.
            </p>
        </noscript>
          <form method="post" action="https://test.aspx">
             <input type="hidden" name="SAMLResponse" value="123456789"/>            
             <noscript><input type="submit" value="Resume"/></noscript>
        </form>
    </body>
</html>

I would like to extract 我想提取

123456789

I already tryed this: 我已经尝试过了：

Dim SAMLResponse As String = CType(xmlURLDecodedXML.Descendants().Where(Function(x) x.Name.LocalName = "SAMLResponse").FirstOrDefault(), String)

Answer 1

In your case, try with this (with assumption: the node input of SAMLResponse will not change, because the attribute position will change too) : 在您的情况下，请尝试以下操作（假设：SAMLResponse的节点输入不会更改，因为属性位置也会更改）：

    Dim myArray() As XElement = MyXelement.Descendants().ToArray
    Dim myname As String = ""
    Dim myValue As String = ""
    For a = 1 To myArray.Count
        If myArray(a - 1).Name.ToString = "input" Then
            Try
                If myArray(a - 1).Attributes.ToArray(1).Value = "SAMLResponse" Then
                    myValue = myArray(a - 1).Attributes.ToArray(2).Value
                End If
            Catch ex As Exception

            End Try
        End If
    Next

in your html: 在您的html中：

<input type="hidden" name="SAMLResponse" value="123456789"/>

so

The Node Name is input
The First Attribute is Hidden
The Second Attribute is SAMLResponse
The Third Attribute is 123456789

使用VB.NET提取HTML节点的值

问题描述

1 个解决方案

解决方案1
0 2019-09-05 03:51:33

使用VB.NET提取HTML节点的值

问题描述

1 个解决方案

解决方案1 0 2019-09-05 03:51:33

解决方案1
0 2019-09-05 03:51:33