[英]VBA - dealing with JavaScript content in XMLHTTP GET request
我想從網頁中提取內容。 但是,當我收到響應文本時,它包含 JavaScript,無法像瀏覽器打開的頁面那樣進行處理。
這種方法可以用於獲取 HTML 內容還是只有瀏覽器模擬可以提供幫助? 或者也許有一些不同的方法來接收這些內容?
Dim oXMLHTTP As New MSXML2.XMLHTTP
Dim htmlObj As New HTMLDocument
With oXMLHTTP
.Open "GET", "http://www.manta.com/ic/mtqyfk0/ca/riverbend-holdings-inc", False
.send
If .ReadyState = 4 And .Status = 200 Then
htmlObj.body.innerHTML = .responseText
'do things
End If
End With
響應文本:
<!DOCTYPE html>
<head>
<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
<meta http-equiv="cache-control" content="max-age=0" />
<meta http-equiv="cache-control" content="no-cache" />
<meta http-equiv="expires" content="0" />
<meta http-equiv="expires" content="Tue, 01 Jan 1980 1:00:00 GMT" />
<meta http-equiv="pragma" content="no-cache" />
<meta http-equiv="refresh" content="10; url=/distil_r_blocked.html?Ref=/ic/mtq599v/ca/45th-street-limited-partnership&distil_RID=2115B138-A1BF-11E6-A957-C0595F6B962F&distil_TID=20161103121454" />
<script type="text/javascript">
(function(window){
try {
if (typeof sessionStorage !== 'undefined'){
sessionStorage.setItem('distil_referrer', document.referrer);
}
} catch (e){}
})(window);
</script>
<script type="text/javascript" src="/ser-yrbwqfedrrwwvctvyavy.js" defer></script><style type="text/css">#d__fFH{position:absolute;top:-5000px;left:-5000px}#d__fF{font-family:serif;font-size:200px;visibility:hidden}#verxvaxcuczwcwecuxsx{display:none!important}</style></head>
<body>
<div id="distil_ident_block"> </div>
</body>
</html>
不 - 因為 Javascript 實際上是<script>
標簽內 HTML 的一部分。 您必須對響應進行后處理以自己刪除標簽。
收到頁面的 HTML 后,您可以使用函數從 DOM 中刪除<script>
節點:
Function RemoveScriptTags(objHTML As HTMLDocument) As String
Dim objElement As HTMLGenericElement
For Each objElement In objHTML.all
If VBA.LCase$(objElement.nodeName) = "script" Then
objElement.removeNode
End If
Next objElement
RemoveScriptTags = objHTML.DocumentElement.outerHTML
End Function
這可以包含在您的示例代碼中,如下所示:
Option Explicit
Sub Test()
Dim objXMLHTTP As New MSXML2.XMLHTTP
Dim objHTML As Object
Dim strUrl As String
Dim strHtmlNoScriptTags As String
strUrl = "http://www.manta.com/ic/mtqyfk0/ca/riverbend-holdings-inc"
With objXMLHTTP
.Open "GET", strUrl, False
.send
If .ReadyState = 4 And .Status = 200 Then
Set objHTML = CreateObject("htmlfile")
objHTML.Open
objHTML.write objXMLHTTP.responseText
objHTML.Close
'do things
strHtmlNoScriptTags = RemoveScriptTags(objHTML)
Debug.Print strHtmlNoScriptTags
'update html document with script-less document
Set objHTML = CreateObject("htmlfile")
objHTML.Open
objHTML.write strHtmlNoScriptTags
objHTML.Close
'you can now operate on DOM of objHTML
End If
End With
End Sub
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