flex4与Java交互

 

        flex4出来一段时间了,去年看了一段时间flex3,后来由于暂时没有项目需求.所以flex遗忘了很多.这次使用flex4+myeclipse8.5录制了一个视频.以免时间长了遗忘.
        软件环境:windows7+flex4+myeclipse8.5+blazeds
        功能描述:分别用代码实现了三种flex4与Java通信
        三种方式:
                       1 flex 与普通java类通信RemoteObject
                       2 flex 与服务器交互HTTPService
                       3 flex与webservice交互WebService
        1 flex 与普通java类通信RemoteObject
       普通Java类:        

package com.flex.demo;

/** *//**
 * 功能描述:该类用来实现flex与普通java类中的方法通信
 * @author Administrator
 *
 */
public class SimpleService {

    public String sayHello(String name){
        return "Hello, "+name;
    }
}

        配置说明:配置remoting-config.xml

<destination id="myservice">
        <properties>
            <source>com.flex.demo.SimpleService</source>
        </properties>
    </destination>

        调用

<!--flex 与普通java类通信-->
        <s:RemoteObject id="serv" destination="myservice" fault="serv_faultHandler(event)" result="serv_resultHandler(event)">
            
        </s:RemoteObject>

        2flex 与服务器交互HTTPService
        servlet代码        

package com.flex.demo;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/** *//**
 * 功能描述:该servlet用来与flex进行交互
 * @author Administrator
 *
 */
@SuppressWarnings("serial")
public class SimpleServiceServlet extends HttpServlet {
    
    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");
        response.getWriter().write("我是服务器");
    }
}

        调用

<!-- flex 与服务器交互-->
        <s:HTTPService id="service" fault="service_faultHandler(event)" result="service_resultHandler(event)" url="http://localhost:8080/flexdemo/simpleServiceServlet">
            
        </s:HTTPService>

        3flex与webservice交互WebService

<!--flex与webservice交互这里调用一个天气预报的webservice-->
        <s:WebService id="ws" 
                      wsdl="http://www.webxml.com.cn/WebServices/WeatherWebService.asmx?wsdl" 
                      fault="ws_faultHandler(event)" 
                      result="ws_resultHandler(event)" 
                      showBusyCursor="true">
            <!-- 第二种调用webservice的方法<s:operation>-->
            <!-- <s:operation name="getWeatherbyCityName"> webservice中的方法名-->
            <s:operation name="getWeatherbyCityName">
                <!--传递的参数-->
                <s:request>
                    <!--参数名称必须与webservice中定义的参数名一致否则调用不成功报错-->
                    <theCityName>
                        {city.text}
                    </theCityName>
                </s:request>
            </s:operation>
            
        </s:WebService>

        三种方式完整的配置例子

<?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"
               creationComplete="service.send()"
               >
    <fx:Script>
        <![CDATA[
            import mx.controls.Alert;
            import mx.rpc.events.FaultEvent;
            import mx.rpc.events.ResultEvent;

            //错误处理函数
            protected function serv_faultHandler(event:FaultEvent):void
            {
                Alert.show("调用失败了:"+event.fault.message as String,"提示");
            }

            //成功调用函数
            protected function serv_resultHandler(event:ResultEvent):void
            {
                Alert.show("调用成功了:"+event.result as String,"提示");
            }


            protected function service_faultHandler(event:FaultEvent):void
            {
                Alert.show("调用失败了:"+event.fault.message as String,"提示");
            }


            protected function service_resultHandler(event:ResultEvent):void
            {
                Alert.show("调用成功了:"+event.result as String,"提示");
            }


            protected function ws_faultHandler(event:FaultEvent):void
            {
                Alert.show("调用失败了:"+event.fault.message as String,"提示");
            }
            
            //调用成功了
            protected function ws_resultHandler(event:ResultEvent):void
            {
                trace(event.result);
                lbl.text=(String)(event.result);
            }

            //第一种调用webservice的方法
            //此方法调用webservice
            protected function btn_clickHandler(event:MouseEvent):void
            {
                //ws.getWeatherbyCityName(city.text);
                //第二中调用webservice的方法
                ws.getWeatherbyCityName.send();
            }

            
            
        ]]>
    </fx:Script>
    <fx:Declarations>
        <!-- 将非可视元素（例如服务、值对象）放在此处 -->
        
        <!--flex 与普通java类通信-->
        <s:RemoteObject id="serv" destination="myservice" fault="serv_faultHandler(event)" result="serv_resultHandler(event)">
            
        </s:RemoteObject>
        
        <!-- flex 与服务器交互-->
        <s:HTTPService id="service" fault="service_faultHandler(event)" result="service_resultHandler(event)" url="http://localhost:8080/flexdemo/simpleServiceServlet">
            
        </s:HTTPService>
        
        <!--flex与webservice交互这里调用一个天气预报的webservice-->
        <s:WebService id="ws" 
                      wsdl="http://www.webxml.com.cn/WebServices/WeatherWebService.asmx?wsdl" 
                      fault="ws_faultHandler(event)" 
                      result="ws_resultHandler(event)" 
                      showBusyCursor="true">
            <!-- 第二种调用webservice的方法<s:operation>-->
            <!-- <s:operation name="getWeatherbyCityName"> webservice中的方法名-->
            <s:operation name="getWeatherbyCityName">
                <!--传递的参数-->
                <s:request>
                    <!--参数名称必须与webservice中定义的参数名一致否则调用不成功报错-->
                    <theCityName>
                        {city.text}
                    </theCityName>
                </s:request>
            </s:operation>
            
        </s:WebService>
        
        
    </fx:Declarations>
    <s:TextInput x="488" y="72" id="city"/>
    <s:Button x="633" y="72" label="查看" id="btn" click="btn_clickHandler(event)"/>
    <s:Label x="224" y="128" id="lbl" width="820" height="376"/>
</s:Application>