flex中httpservice与java后台交互的两种传值方式

<!-- 定义HttpService发送请求 -->

???????? < s:HTTPService? id ="service" ?

???????????????????????url ="http://localhost:8080/testhttpservice/testHttpServiceServlet" ?

???????????????????????useProxy ="false" ?

???????????????????????fault ="service_faultHandler(event)" ?

???????????????????????result ="service_resultHandler(event)" >

???????????? <!-- 第一种传值方式 -->

????????????

???????????? < s:request? >

???????????????? <!-- 参数名称作标签,中间填充参数值 -->

???????????????? < username > {txtusername.text} </ username >

???????????????? < password > {txtpassword.text} </ password >

???????????? </ s:request >

????????????

???????? </ s:HTTPService >

???????? // 获取flex传递的参数?username?password

????????String?username = request.getParameter( " username " );

???????? // get方式处理乱码

???????? // username=new?String(username.getBytes("ISO-8859-1"),"utf-8");

????????String?password = request.getParameter( " password " );

???????? // password=new?String(password.getBytes("ISO-8859-1"),"utf-8");

???????????????? //第二种传值方式?通过send()方法传值?send方法中传递参数?

????????????????//定义一object对象

????????????????var?val:Object=new?Object();

????????????????//分别将文本框username，password的值传递到后台

????????????????//object对象.参数名=值???传值操作

????????????????val.username=txtusername.text;

????????????????val.password=txtpassword.text;

????????????????service.send(val);

package ?com.servlet;

import ?java.io.IOException;

import ?java.io.PrintWriter;

import ?java.util.ArrayList;

import ?java.util.List;

import ?javax.servlet.ServletException;

import ?javax.servlet.http.HttpServlet;

import ?javax.servlet.http.HttpServletRequest;

import ?javax.servlet.http.HttpServletResponse;

/**

?*?功能描述:flex?httpservice与java交互参数传递探讨<br>

?*?@author?sxyx2008<br>

?*?@date?2010-07-19

?*

?*/

@SuppressWarnings( " serial " )

public ? class ?TestHttpServiceServlet? extends ?HttpServlet? {

????

????@Override

????protected?void?service(HttpServletRequest?request,?HttpServletResponse?response)

????????????throws?ServletException,?IOException?{

????????//处理post方式乱码

????????request.setCharacterEncoding("utf-8");

????????//设置浏览器输出字符编码

????????response.setCharacterEncoding("utf-8");

????????PrintWriter?writer=response.getWriter();

????????//获取flex传递的参数?username?password

????????String?username=request.getParameter("username");

????????//get方式处理乱码

????????

????????//username=new?String(username.getBytes("ISO-8859-1"),"utf-8");

????????String?password=request.getParameter("password");

????????//password=new?String(password.getBytes("ISO-8859-1"),"utf-8");

????????

????????//构建一个list存放一些数据用来模拟用户是否存在这一功能

????????List<String>?list=new?ArrayList<String>();

????????list.add("张三");

????????list.add("李四");

????????list.add("王五");

????????list.add("曹操");

????????list.add("孙权");

????????list.add("刘备");

????????//检验用户

????????if(list.contains(username)){

????????????writer.print("存在:"+username+"客户端传递的密码是:"+password);

????????}else{

????????????writer.print("找不到:"+username+"客户端传递的密码是:"+password);

????????}

????????

????}

}

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

< s:Application? xmlns:fx ="http://ns.adobe.com/mxml/2009" ?

???????????????xmlns:s ="library://ns.adobe.com/flex/spark" ?

???????????????xmlns:mx ="library://ns.adobe.com/flex/mx" ?minWidth ="955" ?minHeight ="600" >

???? < fx:Script >

???????? <![CDATA[

????????????import?mx.controls.Alert;

????????????import?mx.rpc.events.FaultEvent;

????????????import?mx.rpc.events.ResultEvent;

????????????//调用失败

????????????protected?function?service_faultHandler(event:FaultEvent):void

????????????{

????????????????Alert.show("失败了:"+event.message,"提示");

????????????}

????????????//调用成功

????????????protected?function?service_resultHandler(event:ResultEvent):void

????????????{

????????????????Alert.show("成功了:"+event.result?as?String,"提示");

????????????}

????

????????????//调用

????????????protected?function?button1_clickHandler(event:MouseEvent):void

????????????{

????????????????//第一种传值方式????????????????

????????????????//service.send();

????????????????

????????????????//第二种传值方式?通过send()方法传值?send方法中传递参数?

????????????????//定义一object对象

????????????????var?val:Object=new?Object();

????????????????//分别将文本框username，password的值传递到后台

????????????????//object对象.参数名=值???传值操作

????????????????val.username=txtusername.text;

????????????????val.password=txtpassword.text;

????????????????service.send(val);

????????????}

???????? ]]>

???? </ fx:Script >

???? < fx:Declarations >

???????? <!-- ?将非可视元素（例如服务、值对象）放在此处? -->

???????? <!-- 定义HttpService发送请求 -->

???????? < s:HTTPService? id ="service" ?

???????????????????????url ="http://localhost:8080/testhttpservice/testHttpServiceServlet" ?

???????????????????????useProxy ="false" ?

???????????????????????fault ="service_faultHandler(event)" ?

???????????????????????result ="service_resultHandler(event)" >

???????????? <!-- 第一种传值方式 -->

????????????

???????????? < s:request? >

???????????????? <!-- 参数名称作标签,中间填充参数值 -->

???????????????? < username > {txtusername.text} </ username >

???????????????? < password > {txtpassword.text} </ password >

???????????? </ s:request >

????????????

???????? </ s:HTTPService >

????????

????????

???? </ fx:Declarations >

???? < s:TextInput? x ="332" ?y ="196" ?id ="txtusername" />

???? < s:TextInput? x ="332" ?y ="256" ?id ="txtpassword" ?displayAsPassword ="true" />

???? < s:Button? x ="357" ?y ="311" ?label ="发送" ?click ="button1_clickHandler(event)" />

???? < s:Label? x ="290" ?y ="206" ?text ="用户名:" />

???? < s:Label? x ="297" ?y ="266" ?text ="密码:" />

</ s:Application >