VBScript中无法选择XML节点 [英] VBScript Can not Select XML nodes

问题描述

我想选择一些web服务响应XML无济于事节点。出于某种原因，我可以选择根节点（XMLDATA）但是，当我尝试钻更深（XMLDATA /用户），一切都返回空！下面是一个由web服务返回的XML的样品

I am trying to Select nodes from some webservice response XML to no avail. For some reason I am able to select the root node ("xmldata") however, when I try to drill deeper("xmldata/customers") everything is returned empty! Below is the a sample of the XML that is returned by the webservice.

<xmldata>
  <customers>
    <customerid>22506</customerid>
    <firstname>Jim</firstname>
    <issuperadmin>N</issuperadmin>   
    <lastname>Jones</lastname>
  </customers>
</xmldata>

和这里是code，我试图选择客户ID，名字，和姓氏;

and here is the code I am trying to select customerid, firstname, and lastname;

' Send the Xml
oXMLHttp.send Xml_to_Send

' Validate the Xml
dim xmlDoc
set xmlDoc = Server.CreateObject("Msxml2.DOMDocument")
xmlDoc.load (oXMLHttp.ResponseXML.text)
if(len(xmlDoc.text) = 0) then
    Xml_Returned = "<B>ERROR in Response xml:<BR>ERROR DETAILS:</B><BR><HR><BR>" 
end if

dim nodeList
Set nodeList = xmlDoc.SelectNodes("xmldata/customers")

For Each itemAttrib In nodeList
    dim custID, custLname, custFname    
    custID =itemAttrib.selectSingleNode("customerid").text
    custLname =itemAttrib.selectSingleNode("lastname").text
    custFname =itemAttrib.selectSingleNode("firstname").text
    response.write("News Subject: " & custID)
    response.write("<br />News Subject: " & custLname)
    response.write("<br />News Date: " & custFname)
Next

以上code的结果是小人物！没有被写入到页。一个奇怪的是，如果我选择根元素，并获得它的长度如下：

The result of the code above is zilch! nothing is written to the page. One strange thing is if I select the root element and get its length as follows;

Set nodeList = xmlDoc.SelectNodes("xmldata")
Response.Write(nodeList.length) '1 is written to page

它正确地决定1。然而，当我尝试下一个节点相同的情况如下长度;

It correctly determines the length of 1. However when I try the same with the next node down as follows;

Set nodeList2 = xmlDoc.SelectNodes("xmldata/customers")
Response.Write(nodeList.length) '0 is written to page

它返回长度为0的原因！

It returns a length of 0. WHY!

请注意，这不是我试图访问这些节点的值的唯一方法。我只是不知道是什么，我做错了。可能有人请帮助我。干杯。

Please note that this isn't the only way I have attempted to access the values of these nodes. I just can not work out what I am doing wrong. Could someone please help me out. Cheers.

推荐答案

好了，我终于摸索出我在做什么错。当我检索XML是从一个web服务，我有关于它的信息有限，我用下面的XML编写的网页，这样我可以看到它是如何构成的。

Ok, so I finally worked out what I was doing wrong. As the xml I was retrieving was from a webservice, and I had limited information about it, I used the following to write the xml to the page so that I could see how it was structured.

Response.Write oXMLHttp.ResponseXml.xml

由于某种原因（也许有人可以填补这部分），它写的所有的XML标记小写。事实证明，经过一番调查，并执行以下操作后，我发现这不是事实！

For some reason(maybe someone could fill this part in) it wrote all the XML tags in lower case. It turns out that after some investigation and after doing the following I found out that this was not the truth!

dim nodeList
Set nodeList = xmlDoc.SelectNodes("//xmldata/")

for each item In nodeList
    response.write(item.text & " -> Tag Name: " & item.nodeName & "<br />")
Next

'this wrote the following to the page
'22506 -> Tag Name: CustomerID
'Jim -> Tag Name: FirstName
'N -> Tag Name: IsSuperAdmin
'Jones 2 -> Tag Name: LastName

正如你所看到的'节点名称'属性输出显示标签是骆驼。这样的responseXML是相当误导，看到XPath是大小写敏感的是$ P $从问题中选择节点pventing我。

As you can see the 'nodeName' property output shows the tags to be camel case. So that ResponseXML was rather misleading and seeing XPath is case sensitive was preventing me from selecting the Nodes in question.

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