<? xml version="1.0" encoding="utf-8" ?>

< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"

     layout ="absolute"  fontSize ="12"

     >

     < mx:Script >

         <![CDATA[

            import mx.controls.Alert;

            import mx.rpc.events.ResultEvent;

            //对提交给后台的参数进行UTF-8的编码处理

            private function httpEncoding(param:String):String{

                return encodeURIComponent(param);

            }

            private function httpEncoding0(param:String):String{

                return param;//encodeURI(param);

            }

            private function doRequest():void{

                btn_do.enabled=false;

                var url:String = "http://localhost:8600/grid.jsp";

                //以下那样写后台会乱码,不管是否做URI编码转换

                //url += "?user="+httpEncoding0("用户名");

                //url += "&psw="+httpEncoding0("密码");

                //trace(url);

                srv.url = url;

                //srv.send();

                //以下这样写正常

                var params:URLVariables = new URLVariables();

                //这个user,psw就是传入后台的参数user,jsp就用 request.getParameter("user")来取

                params.user = httpEncoding("用户名");

                params.psw = httpEncoding("密码");

                srv.send(params);            

            }

            private function resultHandler(event:ResultEvent):void{

                Alert.show("与后台交互结束,前台开始取得的数据...","提示信息");

                btn_do.enabled=true;

            }

         ]]>

     </ mx:Script >

     < mx:HTTPService  id ="srv"  result ="resultHandler(event);" />

     < mx:Panel  title ="测试与jsp后台交互"  layout ="absolute"  width ="100%"  height ="90%" >

         < mx:Button  id ="btn_do"  label ="取得数据"  click ="doRequest();" />

         < mx:Spacer  height ="1" />

         < mx:DataGrid  dataProvider ="{srv.lastResult.catalog.product}"  width ="100%"  height ="100%"  y ="28" />      

     </ mx:Panel >

</ mx:Application >

<? xml version="1.0" encoding="utf-8" ?>

< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"  layout ="absolute" >

     < mx:states >

         < mx:State  name ="Logged In" >

             < mx:SetProperty  target ="{panel1}"  name ="width"  value ="95%" />

             < mx:SetProperty  target ="{panel1}"  name ="height"  value ="95%" />

             < mx:RemoveChild  target ="{password}" />

             < mx:RemoveChild  target ="{username}" />

             < mx:RemoveChild  target ="{label1}" />

             < mx:RemoveChild  target ="{Submit}" />

             < mx:RemoveChild  target ="{label2}" />

             < mx:SetProperty  target ="{panel1}"  name ="title"  value ="Members Section" />

             < mx:AddChild  relativeTo ="{panel1}"  position ="lastChild" >

                 < mx:Label  x ="10"  y ="10"  text ="Welcome to the Members Section!" />

             </ mx:AddChild >

             < mx:AddChild  relativeTo ="{panel1}"  position ="lastChild" >

                 < mx:Label  x ="10"  y ="36"  text ="Here you can do great things, like join the forums @ Viper Creations!" />

             </ mx:AddChild >

             < mx:AddChild  relativeTo ="{panel1}"  position ="lastChild" >

                 < mx:Label  x ="10"  y ="62"  text ="Label" />

             </ mx:AddChild >

         </ mx:State >

     </ mx:states >

     < mx:Script >

         <![CDATA[

            import mx.rpc.events.ResultEvent;

            

         ]]>

     </ mx:Script >

     < mx:Script >

    

<![CDATA[

private function checkLogin(evt:ResultEvent):void

{

    if(evt.result.loginsuccess == "yes")

    {

    currentState = "Logged In";

    }

    if(evt.result.loginsuccess == "no")

    {

        

        mx.controls.Alert.show('Invalid username/password');

    }        

}

]]>

</ mx:Script >

     < mx:HTTPService  id ="login_user"  result ="checkLogin(event)"  showBusyCursor ="true"  method ="POST"  url ="http://www.vipercreations.com/site_admin/login.php"  useProxy ="false" >

         < mx:request  xmlns ="" >

             < username >

                {username.text}

             </ username >

             < password >

                {password.text}

             </ password >

         </ mx:request >

     </ mx:HTTPService >

    

     < mx:Panel  resizeEffect ="Resize"  width ="250"  height ="200"  layout ="absolute"  title ="Login System"  horizontalCenter ="0"  verticalCenter ="-2"  id ="panel1" >

         < mx:Label  x ="10"  y ="10"  text ="Username:"  id ="label1" />

         < mx:TextInput  x ="10"  y ="36"  id ="username" />

         < mx:Label  x ="10"  y ="66"  text ="Password:"  id ="label2" />

         < mx:TextInput  x ="10"  y ="92"  id ="password"  displayAsPassword ="true" />

         < mx:Button  x ="10"  y ="122"  label ="Submit"  id ="Submit"  click ="login_user.send();" />

     </ mx:Panel >

    

</ mx:Application >