FreeThreadedXMLDOM是个什么东西

[ttc888]

怎么用的

[ttc888]

意思是多线程才需要用吧？
还是不大明白怎么用的，是否一般放进Application和Session里？

[ttc888]

比如：http://www.chinabs.net/xml/default.asp?infoid=270

这里有个留言程序，index.asp用的是Microsoft.FreeThreadedXMLDOM，PostNew.asp用的是Microsoft.XMLDOM

为什么？



五、建立显示XML数据的ASP文件(index.asp)

＜%
strSourceFile = Server.MapPath("/") & "\List.xml"
"获取XML文件的路径这里根据你的虚拟目录不同而不同
Set objXML = Server.CreateObject("Microsoft.FreeThreadedXMLDOM")
"以自由线程创建一个XML对像
objXML.load(strSourceFile)"把XML文件读入内存
Set objRootsite = objXML.documentElement.selectSingleNode("NewList")
"选取NewList节点
%＞


六、建立写新留言程序(PostNew.asp)

"根据得到的数据建立XML片段
set objXML2=Server.CreateObject("Microsoft.XMLDOM")
"建立一个新XML对像
objXML2.loadXML(XMLnode)
"把XML版片段读入内存中
set rootNewNode=objXML2.documentElement
"获得objXML2的根节点
objRootlist.appendChild(rootNewNode)
"把XML片段插入到List.xml中
objXML.save(strSourceFile)
"存储lsit.xml文件（因为不存储List.xml只在内存中更新了）
set objXML=nothing
set objXML2=nothing
response.write "谢谢您的留言"
response.end

[孟子E章]

Application是多个人共同使用的，Session只有你自己使用

[ttc888]

自己使用需要多线程吗？

[孟子E章]

自由线程的Xmldom，允许多线程访问，语法与XMLDOM类似

[孟子E章]

文档说明

Choosing a Threading Model


There are two versions of the XML control.

rental model
The rental model version is designed for single-threaded access. To use the rental model control, use the "Microsoft.DOMDocument" progID.
free-threaded model
The free-threaded version is designed for multiple thread access. To use the free-threaded control, use the "Microsoft.FreeThreadedDOMDocument" progID.
If you plan for several threads to access your XML data from a single control, be sure to use the free-threaded control. If only one thread will access the XML data, use the rental model control for better performance.

The following is a sample global.asa file that creates session-level and application-level free-threaded versions of the XML control.

<SCRIPT LANGUAGE=VBScript RUNAT=Server>
Sub Session_OnStart
ON error RESUME next

SET Application("AppFXMLdoc") = _
server.CreateObject("MSXML2.FreeThreadedDOMDocument")
SET Session("SessFXMLdoc") = _
server.CreateObject("MSXML2.FreeThreadedDOMDocument")
End Sub
Sub Session_OnEnd
ON error RESUME next

SET Session("SessFXMLdoc") = nothing
SET Application("AppFXMLdoc") = nothing
Session("SessFXMLdoc") = empty
Application("AppFXMLdoc") = empty
End Sub
</SCRIPT>
Scripts accessing the Session and Application objects will be able to simultaneously access the "AppFXMLdoc" and "SessFXMLdoc" objects.

[ttc888]

谢谢孟子E章，不过我还是没搞懂。

[火电]

自由线程