flex中httpservice与java后台交互的两种传值方式
环境:myeclipse8.5+flex4+blazeds
描述:flex4中httpservice与服务器端交互的值传递问题
方式一:通过<s:request/>标签进行交互,在该标签内部以要传递的参数名作为该标签内的子标签,值作为内容进行传递,服务端接受数据采用request.getParmeter("参数名")获取数据.
示例代码:
flex中的代码:
示例代码:
服务器端:
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描述:flex4中httpservice与服务器端交互的值传递问题
方式一:通过<s:request/>标签进行交互,在该标签内部以要传递的参数名作为该标签内的子标签,值作为内容进行传递,服务端接受数据采用request.getParmeter("参数名")获取数据.
示例代码:
flex中的代码:
<!--
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 >
后台接受参数的代码:
< 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");
方式二:第二种传值方式通过send()方法传值send方法中传递参数 ,服务端接受数据采用request.getParmeter("参数名")获取数据.
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");
示例代码:
//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);
贴出完整的代码:
//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);
服务器端:
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);
}
}
}
flex代码:
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 >
工程文件:
< 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 >
点我下载工程文件