javascript与webservice的通信实现代码_javascript技巧

代码如下:

// Javascript Document
function $(id)
{
return document.getElementById(id);
}
function GetXmlHttp()
{
if(window.XMLHttpRequest)
return new XMLHttpRequest();
}
var JsOnConverter={};
JsonConverter.FlagStack=[];
JsonConverter.COnvertFromXML=function(xmlRootNode)
{
if(!xmlRootNode)
return;
var cOnverter={};
converter.render=function(node,isArrayElement)
{
var returnStr='';
var isArray=false;
if(node.childNodes.length==1)
{
returnStr+=node.nodeName+':' + "'" + node.firstChild.nodeValue + "'" ;
if(node==xmlRootNode)
returnStr='{' + returnStr + '}';
return returnStr;
}
isOneNode=false;
if(node.nodeName.match("ArrayOf*"))
isArray=true;
if(isArray)
returnStr+='[';
else
{
returnStr+='{';
if(!(isArrayElement || xmlRootNode==node))
returnStr=node.nodeName + ':' + returnStr;
}
for(var i=1;i{
returnStr+=this.render(node.childNodes[i],isArray) + ',';
}
returnStr=returnStr.slice(0,-1);
if(isArray)
returnStr+=']';
else
returnStr+='}';
return returnStr;
}
//alert(converter.render(xmlRootNode));
return eval('(' + converter.render(xmlRootNode) + ')');
}

代码如下:

// Javascript Document
function AjaxClient(url)
{
var xmlhttp=GetXmlHttp();
var request_url=url;
var msgList=new Array();
var isOpen=false;
var isRunning=false;
xmlhttp.Onreadystatechange=function()
{
if(xmlhttp.readyState==xmlhttp.DONE)
{
isRunning=false;
if (xmlhttp.status==200)
{
msgList.push(xmlhttp.responseXML);
}
}
}
this.Open=function()
{
if(xmlhttp==null)
xmlhttp=GetXmlHttp();
isOpen=true;
if(xmlhttp==null)
isOpen=false;
}
this.Send=function(msg)
{
if (isOpen)
{
xmlhttp.open("POST",request_url,false);
//alert(request_url);
xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
xmlhttp.setRequestHeader("Content-length",msg==null?0:msg.length);
//xmlhttp.setRequestHeader("Keep-Alive","ON");
xmlhttp.send(msg==null?"":msg);
isRunning=true;
}
}
this.GetUrl=function()
{
return request_url.length==0?'':request_url;
}
this.SetUrl=function(url)
{
request_url=url;
}
this.Receive=function()
{
var num=0;
while(!msgList.length)
{
num++;
if (num>=20000)
break;
}
return msgList.length==0?null:msgList.shift();
}
this.Close=function()
{
if(!isRunning)
{
isOpen=false;
xmlhttp=null;
}
}
}

代码如下:

// Javascript Document
function WebService(url)
{
var ajaxclient=new AjaxClient(null);
var requestUrl=url;
var respOnseMsg=null;
this.Request=function(requestName,paraList)
{
var url=requestUrl +'/' + requestName;
var sendData='';
ajaxclient.SetUrl(url);
ajaxclient.Open();
//alert(ajaxclient.GetUrl());
if (paraList!=null)
{
for(var obj in paraList)
sendData+=obj.toString() + '=' + paraList[obj] + '&';
sendData=sendData.slice(0,-1);
}
ajaxclient.Send(sendData);
//ajaxclient.Close();
//respOnseMsg=XMLtoJSON(ajaxclient.Receive());
//for(var obj in responseMsg)
// alert(obj.toString() + ':' + responseMsg[obj].toString());
respOnseMsg=ajaxclient.Receive();
}
this.GetRespOnse=function()
{
return responseMsg;
}
}

代码如下:

var webService=new WebService('http://localhost/NightKidsWebService/Request.asmx');
webService.Request("GetResourceList",null);
alert(JsonConverter.ConvertFromXML(webService.GetResponse().firstChild));