使用xmlhttp.send()方法的参数来传递大容量的数据

Ajax技术中的xmlhttp.send()方法提供我们传送大量数据的功能,要使用该功能,首先要将要传到服务端的数据封装在一个xml对象中,在将这个xml对象的xml属性做为send()方法的参数就可以.

客户端代码:

var      guidArray     =     guidlist.split(     "     ,     "     );

var      xmlDom     =     new      ActiveXObject(     "     MSXML2.DOMDocument     "     );

xmlDom.loadXML(     ""     );

var      domRoot     =      xmlDom.createElement(     "     NewDataSet     "     );

xmlDom.appendChild(domRoot);

for     (     var      i     =     0     ;i     <     guidArray.length;i     ++     )

{

var      node     =      xmlDom.createElement(     "     guid     "     );

node.text     =     guidArray[i];

domRoot.appendChild(node);

}

var      xmlhttp     =     new      ActiveXObject(     "     MSXML2.XMLHTTP     "     );

xmlhttp.onreadystatechange     =     function     (){

if      (xmlhttp.readyState     ==     4     )

{

if      (xmlhttp.status     ==     200     )

{

alert(     "     处理完成     "     );

}

else

{

alert(xmlhttp.responseText);

}

}

}

xmlhttp.Open(     "     POST     "     ,     "     fmSmsPostProcess.aspx?sStatus=     "     +     escape(sStatus)     +     "     &sProcessResult=     "     +     escape(document.getElementById(     "     btProcessResult     "     ).value)     +

"     &sReStore=     "     +     escape(document.getElementById(     "     btReStore     "     ).value),     true     );

xmlhttp.setRequestHeader(     "     Content-Type     "     ,     "     text/xml     "     );

xmlhttp.send(xmlDom.xml);

服务端需要从请求流中,解析出客户端传入的xml的内容,服务端代码:

System.IO.Stream instream = Page.Request.InputStream;

BinaryReader br = new BinaryReader(instream,System.Text.Encoding.UTF8);

byte[] byt = br.ReadBytes((int)instream.Length);

string sXml = System.Text.Encoding.UTF8.GetString(byt);

System.Xml.XmlDocument xmlDoc = new System.Xml.XmlDocument();

xmlDoc.LoadXml(sXml);

XmlElement xe= xmlDoc.DocumentElement;

for(int i=0;i< xe.ChildNodes.Count;i++)

{

sGuid = sGuid + ",'" + xe.ChildNodes[i].InnerText+"'";

}