SmartHTTP 简易HttpRequest类(ASP)

<script language="jscript" runat="server">
function SmartHttp(url,method,data){
return new _SmartHttp(url,method,data);
}

function _SmartHttp(url,method,data){
if(typeof method=="undefined") method="GET";
if(typeof data=="undefined") data="";
method = method.toUpperCase();
method = method!="POST" ? "GET" : "POST";

this.method = method;
this.url=url;
this.data=data;
this.charset="gb2312";
this.http=null;
this.headers=[];
this.status=0;
this.readyState=0;
this.content=null;
this.msg="";
this.dataset={
charset:"gb2312",
data:[],
append:function(key,value,noencode){
var fn=null;
if(this.charset.toLowerCase()=="utf-8"){fn = encodeURIComponent;}else{fn = escape;}
if(noencode==true){fn=function(_str){return _str;}}
this.data.push({"key":fn(key),"value":fn(value)});
},
remove:function(key){
if(this.data.length<=0) return false;
var _data=[];
for(var i=0;i<this.data.length;i++){
if(this.data[i].key!=key){
_data.push(this.data[i]);
}
}
this.data = _data;
},
isexists:function(key){
if(this.data.length<=0) return false;
for(var i=0;i<this.data.length;i++){
if(this.data[i].key==key){
return true;
}
}
return false;
},
clear:function(){
this.dataset.data=[];
}
};
}

_SmartHttp.prototype.init=function(){
var datasetstr="";
if(this.dataset.data.length>0){
for(var i=0;i<this.dataset.data.length;i++){
datasetstr += this.dataset.data[i].key + "=" + this.dataset.data[i].value + "&";
}
}
if(datasetstr!="") datasetstr = datasetstr.substr(0,datasetstr.length-1);
if(this.data==""){this.data = datasetstr;}else{if(datasetstr!="")this.data+= "&" + datasetstr;}
if(this.data=="")this.data=null;
this.url += ((this.url.indexOf("?")<0) ? "?" : "&") + "jornd=" + this.getrnd();
if(this.method=="GET" && this.data!=null) this.url += "&" + this.data;
if(this.method=="POST") this.headers.push("Content-Type:application/x-www-form-urlencoded");
if(!this.charset || this.charset=="") this.charset = "gb2312";
};

_SmartHttp.prototype.header=function(headstr){
if(headstr.indexOf(":")>=0) this.headers.push(headstr);
};
_SmartHttp.prototype.send=function(){
this.init();
var _http = this.getobj();
if(_http==null){return "";}
try{_http.setTimeouts(10000,10000,10000,30000);}catch(ex){}
_http.open(this.method,this.url,false);
if(this.headers.length>0){
for(var i=0;i<this.headers.length;i++){
var Sindex = this.headers[i].indexOf(":");