Submit a large amount of Ajax data in XML format

AjaxOfGetAndPostTwo submission methods, GetIt mainly refers to the submission of a small amount of data.,Here I will talk about UsagePostProcess of sending large amounts of data.

Here I package all the content into oneXMLFile stream,Avoid sending long parameters,Load directly on the serverXMLAnalysis,Very convenient,No data loss..

Below is the process implementation idea:

Step 1:CreateXMLOfDomObject,Use the following method to complete

Function createdomdoc ()//CreateXMLDocument Object

{

VaR signatures = ["msxml2.domdocument. 5.0", "msxml2.domdocument. 4.0", "msxml2.domdocument. 3.0", "msxml2.domdocument", "Microsoft. xmldom"];

For (VAR I = 0; I <signatures. length; I ++)

{

Try

{

VaR domdoc = new activexobject (Signatures [I]);

Return domdoc;

}

Catch (E)

{

}

}

Return NULL;

}

 

Step 2:Get data from the client and write dataXM,The method is as follows::

Function createxml (DOC)

{

VaR root = Doc. createelement ("root ");

VaR Title = Doc. createelement ("title ");

Title. Text = Document. getelementbyid ("title"). value;

Root. appendchild (title );

VaR homepage = Doc. createelement ("Homepage ");

Homepage. Text = Document. getelementbyid ("Homepage"). value;

Root. appendchild (homepage );

Doc. appendchild (Root );

// Alert ("ddddd ");

Return Doc. xml;

}

Step 3 Mutual call

VaR domdoc = createdomdoc ();//Create object UseSendSend to server

If (domdoc! = NULL)

{

VaR xml = createxml (domdoc );//WriteXMLReturnXMLDocument

Alert (domdoc );//

}

Else

{

Alert ("Not InstalledMSXMLWidget");

}

Step 4AjaxSend

VaR XMLHTTP = createxmlhttp ();

 

XMLHTTP. onreadystatechange = function ()

{

If (XMLHTTP. readystate = 4)

{

If (XMLHTTP. Status = 200)

{

Info = XMLHTTP. responsetext;

// Alert (Info );

}

Else

{

Alert ("AjaxCall failed!"+ XMLHTTP. status );

}

}

}

XMLHTTP. Open ("Post", "ajaxserver. aspx? Type = Add ", false );

XMLHTTP. setRequestHeader ("Content-Type", "application/X-WWW-form-urlencoded ;");//Key,Otherwise, an error occurs.

XMLHTTP. Send (domdoc );//Sent must beDomdocDocument Object,If you send onlyXMLError"Statue = 500"

Server:

Set accept type,Prevent Chinese garbled characters

Request. contentencoding = system. Text.Encoding. Getencoding ("Gb2312");

Xmldocument xmldoc = new xmldocument ();//Create an XML Document Object

Xmldoc. Load (request. inputstream );//XML Document Object stream sent by Ajax // You can also accept common pipeline streams.

Xmlnode node = xmldoc. selectsinglenode ("// Title ");//Obtain the title Node

Title = node. innertext;//Get node Value

Partial explanation:

XMLHTTP. Open ("Post", "ajaxserver. aspx? Type = Add ", false );

OpenThe method must contain at least the preceding three parameters.,

Post/get:Sending type

Ajaxserver. aspx? Type = Add:Request page path

False:YesTrue,WhenTrueYes asynchronous request,Sending can continue to use the form, FalseLock form after sending,Until the result is returned..