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(":"); 
var key = this.headers[i].substr(0,Sindex); 
var value = this.headers[i].substr(Sindex+1); 
_http.setRequestHeader(key,value); 
} 
} 
_http.send(this.data); 
this.readyState = _http.readyState; 
if(_http.readyState==4){ 
this.status = _http.status; 
this.http = _http; 
this.content = _http.responseBody; 
} 
return this; 
} 

_SmartHttp.prototype.getbinary=function(){ 
return this.content; 
}; 

_SmartHttp.prototype.gettext=function(charset){ 
try{ 
return this.b2s(this.content,charset ? charset : this.charset); 
}catch(ex){ 
this.msg = ex.description; 
return ""; 
} 
}; 

_SmartHttp.prototype.getjson=function(charset){ 
try{ 
var _json=null; 
eval("_json=(" + this.gettext(charset) + ");"); 
return _json; 
}catch(ex){ 
this.msg = ex.description; 
return null; 
} 
}; 

_SmartHttp.prototype.getxml=function(charset){ 
try{ 
var _dom = new ActiveXObject("MSXML2.DOMDocument"); 
_dom.loadXML(this.gettext(charset).replace("&","&")); 
return _dom; 
}catch(ex){ 
this.msg = ex.description; 
return null; 
} 
}; 
_SmartHttp.prototype.getobj = function (){ 
var b=null; 
var httplist = ["MSXML2.serverXMLHttp.3.0","MSXML2.serverXMLHttp","MSXML2.XMLHttp.3.0","MSXML2.XMLHttp","Microsoft.XMLHttp"]; 
for(var i = 0;i<=httplist.length -1;i++){ 
try{ 
b= new ActiveXObject(httplist[i]); 
(function(o){ 
_SmartHttp.prototype.getobj = function(){return new ActiveXObject(o)}; 
})(httplist[i]); 
return b; 
}catch(ex){ 
//eval("this.msg = ex.description;"); 
} 
} 
return b; 
}; 

_SmartHttp.prototype.getrnd = function (){return Math.random().toString().substr(2);}; 

_SmartHttp.prototype.b2s = function(bytSource, Cset){ 
var Objstream; 
var byts; 
Objstream =Server.CreateObject("ADODB.Stream"); 
Objstream.Type = 1; 
Objstream.Mode = 3; 
Objstream.Open(); 
Objstream.Write(bytSource); 
Objstream.Position = 0; 
Objstream.Type = 2; 
Objstream.CharSet = Cset; 
byts = Objstream.ReadText(); 
Objstream.Close(); 
Objstream = null; 
return byts; 
}; 
_SmartHttp.prototype.urlencode=function(str){ return encodeURIComponent(str);}; 
_SmartHttp.prototype.urldecode=function(str){ return decodeURIComponent(str);}; 
</script>