支持跨域的Ajax异步(请求)提交类

 

  1    /**//*
  2        异步请求类
  3        
  4        作者：吾非无心
  5        创建时间：2009.2
  6        ---------------------------------------------------------------------------------------------------------------------------------
  7        
  8        修改记录：
  9        
 10        2009.4.27——添加 URL 检测功能，如果是“http：//xxxx.xxx.xx.xx/..”这样的格式，使用系统提供的“/getUrl.aspx”进行获取
 11                     以解决跨域问题。
 12                     getUrl.aspx 的主要参数有两个：1、url 值为目标URL（URL中可以带参数）——必须；2、method 值为代理使用的方法（可选）
 13                     如果method为空，默认采用POST方法进行代理；如果FORM参数为空（即request.content-length=0），则自动设置为GET方法；
 14                     （注：getUrl.aspx在2009.4.27重新进行了设计，在原完成代理的基础上，新增了Cookie代理）
 15    */
 16    function IsOuterURL(str_url){
 17        var strRegex = "((https|http)://)([\\w-]+\\.)+[\\w-]+.([^a-z])(/[\\w-./?%&=]*)?|((https|http)://)[a-zA-Z0-9\\-\\.][\\w-]+.([^a-z])(/[\\w-./?%&=]*)?";
 18        var re=new RegExp(strRegex); 
 19
 20        if (re.test(str_url)){
 21            return (true); 
 22        }else{ 
 23            return (false); 
 24        }
 25    }
 26    var LeesAjaxRequest=
 27    {
 28        list:[],
 29        m_LeesAjaxHttpRequest:null,
 30        isWorking:false,
 31        getUrl:function(method,url,params,successFun,FailureFun,headers)
 32        {
 33            if(url.length<1)
 34                return;
 35            if(this.m_LeesAjaxHttpRequest==null)
 36            {
 37                if (typeof XMLHttpRequest != 'undefined')
 38                {
 39                    this.m_LeesAjaxHttpRequest = new XMLHttpRequest();
 40                }
 41                else if (typeof ActiveXObject != 'undefined')
 42                {
 43                    this.m_LeesAjaxHttpRequest = new ActiveXObject('Microsoft.XMLHTTP');
 44                }
 45                
 46            }
 47            if (this.m_LeesAjaxHttpRequest)
 48            {
 49                if(this.isWorking)
 50                {
 51                    this.list[this.list.length]={method:method,url:url,params:params,successFun:successFun,failureFun:FailureFun,headers:headers};                    
 52                }
 53                else
 54                {
 55                    this.isWorking=true;
 56                    if(IsOuterURL(url))
 57                        this.m_LeesAjaxHttpRequest.open(method, "/geturl.aspx?url="+escape(url)+"&method="+method, true);//true为异步
 58                    else
 59                        this.m_LeesAjaxHttpRequest.open(method, url, true);//true为异步
 60                    var _this=this;
 61                    this.m_LeesAjaxHttpRequest.onreadystatechange=function()
 62                    {
 63                        if(4==_this.m_LeesAjaxHttpRequest.readyState)
 64                        {   
 65                            if(200==_this.m_LeesAjaxHttpRequest.status)
 66                            {
 67                                if(successFun)
 68                                {
 69                                    try{
 70                                        successFun(_this.m_LeesAjaxHttpRequest);
 71                                    }
 72                                    catch(ex)
 73                                    {}
 74                                }
 75                            }
 76                            else
 77                            {
 78                                if(FailureFun)
 79                                {
 80                                    try{
 81                                        FailureFun(_this.m_LeesAjaxHttpRequest);
 82                                    }
 83                                    catch(ex)
 84                                    {}
 85                                }
 86                            }
 87                            _this.isWorking=false;
 88                            if(_this.list.length>0)
 89                            {
 90                                var o=_this.list[0];
 91                                _this.list.splice(0,1);
 92                                _this.getUrl(o.method,o.url,o.params,o.successFun,o.failureFun,o.headers);
 93                            }
 94                        }
 95                    };
 96                    var vPara="";
 97                    if(typeof params=="string")
 98                    {
 99                        vPara=escape(params);
                    }
                    else if(params)
                    {
                        try
                        {
                            for(var e in params)
                            {
                                if(vPara.length<1)
                                    vPara=e+"="+escape(params[e]);
                                else
                                    vPara+="&"+e+"="+escape(params[e]);
                            }
                        }
                        catch(ex)
                        {}
                    }
                    if(headers)
                    {
                        try
                        {
                            for(var h in headers)
                            {
                                this.m_LeesAjaxHttpRequest.setRequestHeader(h.replace("_","-"),headers[h]);
                            }
                        }
                        catch(ex)
                        {
                        }
                    }
                    this.m_LeesAjaxHttpRequest.send(vPara);
                }
            }
        },
        Post:function(o)
        {
            var vMethod=o.method||"post";
            var vUrl=o.url||null;
            var vParams=o.params||"";
            var vSuccess=o.success||null;
            var vFailure=o.failure||null;
            var vHeaders=o.headers||null;
            if(vUrl==null||vUrl.length<1)
            {
                //alert("异步请求格式错误");
                return;
            }
            this.getUrl(vMethod,vUrl,vParams,vSuccess,vFailure,vHeaders);
        },
        Get:function(o)
        {
            var vMethod=o.method||"get";
            var vUrl=o.url||null;
            var vParams=o.params||"";
            var vSuccess=o.success||null;
            var vFailure=o.failure||null;
            var vHeaders=o.headers||null;
            if(vUrl==null||vUrl.length<1)
            {
                //alert("异步请求格式错误");
                return;
            }
            this.getUrl(vMethod,vUrl,vParams,vSuccess,vFailure,vHeaders);
        }
    }
    /**//*异步请求类   END*/

 

使用示例:

1.//动态装载JS文件
if(vJS && vJS.length>3)
{  
    if(!_this.loadedJS.isInArray(vJS))
    {
        _this.loadedJS[_this.loadedJS.length]=vJS;
        LeesAjaxRequest.Get({
                                url:vJS,
                                success:function(ojs){
                                            var jsOBJ=document.createElement("script");                                                                                       
                                            jsOBJ.text=ojs.responseText;                                                                                       
                                            document.documentElement.appendChild(jsOBJ);
                                        },//end success
                                        headers:{Content_Type:"application/x-javascript"}
                        });//end Get
    }//end if ( !_this.loadedJS.isInArray(vJS))            
}//end if(vJS && vJS.length>3)

2 .//添加到工具提示竖条上
LeesAjaxRequest.Post({url:"/getToolTip.aspx",
                  params:{tooltip:title},
                  headers:{Content_Type:"application/x-www-form-urlencoded;charset=utf-8"},//如果使用Post方法，必须传入此参数，charset可以为别的
                  success:function(o){
                            var rObj=eval("("+o.responseText+")");
                            var tObj=new LeesBaseWindow(rObj["width"]+2,rObj["height"]+1,"","","","","",1,"");
                            tObj.ShowWindow(vToolBarSlider.window);
                            tObj.contentWindow.style.backgroundImage="url("+rObj["image"]+")";
                            tObj.contentWindow.style.marginLeft="1px";
                            tObj.contentWindow.style.backgroundRepeat="no-repeat";
                            tObj.contentWindow.style.backgroundPosition="0 0";
                            tObj.contentWindow.onmouseover=function(){
                                                      this.style.backgroundPosition="0 -"+rObj.height;                                                                 
                                                      _this.setShowWindow(obj);
                                                   }
                            tObj.contentWindow.onmouseout=function(){
                                                      this.style.backgroundPosition="0 0";
                                                   }
                          },
                  failure:function(){
                            alert("生成ToolTip时出错");
                          }
                      });