Flex与Java中的Object进行交互,需要准备三个内容,一个是Flex主文件,也就是我们的mxml文件,两个Java 类,一个remoting-config.xml。为了减少程序的复杂性,这里只证明Flex可以调用Java中Object进行交互,不进行与数据库的交互。

  新建一个Java实体类:SpeakUser.java, 如下:

  package com.cx.model;

  import java.io.Serializable;

  public class SpeakUser implements Serializable{

  private static final long serialVersionUID = -4154296753553491429L;

  private String userName;

  private String userPwd;

  private String userTel;

  private String userMail;

  public String getUserName() {

  return userName;

  }

  public void setUserName(String userName) {

  this.userName = userName;

  }

  public String getUserPwd() {

  return userPwd;

  }

  public void setUserPwd(String userPwd) {

  this.userPwd = userPwd;

  }

  public String getUserTel() {

  return userTel;

  }

  public void setUserTel(String userTel) {

  this.userTel = userTel;

  }

  public String getUserMail() {

  return userMail;

  }

  public void setUserMail(String userMail) {

  this.userMail = userMail;

  }

  }

  有的作者说这个实体类需要当做Java代码中方法的返回值传递给Flex中的AS代码,所以需要继承Serializable接口,否则将导致异常的发生。但是经过笔者测试,这个Serializable是可选的,即使不继承,也不会出现什么问题,可能是由于flex的版本所决定的吧。

  再创建一Java对象:IntroduceOneself.java,供Flex调用, 类中 以SpeakUser作为参数。代码如下:

  package com.cx.action;

  import com.cx.model.*;

  public class IntroduceOneself {

  public String speak(SpeakUser user){

  System.out.println("Hello, My Name is: " + user.getUserName());

  System.out.println("My telephone is: " + user.getUserTel());

  System.out.println("My Email is: " + user.getUserMail());

  return "名字叫:" + user.getUserName() + ", 电话是: "

  + user.getUserTel() + ", 邮箱是: "+user.getUserMail()

  + "来访问您,请问您是否要接见?";

  }

  }

  然后创建一个ActionScript类:SpeakUser.as, 用于接受实体类SpeakUser.java的返回值,这里的[Bindable][RemoteClass]是和java代码中的 SpeakUser.java类关联起来。这样利用类型转换将java对象转换成AS对象。代码如下:

  package com.flex.model

  {

  [Bindable]

  [RemoteClass(alias="com.cx.model.SpeakUser")]

  public class SpeakUser

  {

  public var userName:String="";

  public var userPwd:String ="";

  public var userTel:String ="";

  public var userMail:String ="";

  public function SpeakUser()

  {

  }

  }

  }

修改Flex主文件:BlazObject.mxml,在其中调用java类,代码如下:

<?xml version="1.0" encoding="utf-8"?>  
<mx:Applicationxmlns:mx="http://www.adobe.com/2006/mxml"layout="absolute"minWidth="955"minHeight="600">  
      
    
<mx:Script>  
        
<![CDATA[             
            import com.flex.model.SpeakUser; 
             
            import mx.controls.Alert; 
            import mx.rpc.events.ResultEvent; 
             
            public function remotingHelloJavaFlex():void 
            { 
                 
                var user:SpeakUser = new SpeakUser(); 
             
                user.userName = nameInputTxt.text; 
                user.userMail = txtUserMail.text; 
                user.userPwd = txtPwd.text; 
                user.userTel = txtTel.text; 
                 
                                 
                someOneCome.speak(user); 
                someOneCome.addEventListener(ResultEvent.RESULT,getRoHelloRes); 
            } 
             
            private function getRoHelloRes(e:ResultEvent):void{ 
                Alert.show(e.result.toString()); 
            } 
             
            private function failed():void{ 
                Alert.show("cuowu"); 
            } 
        
]]>  
    
</mx:Script>  
      
    
<mx:Buttonlabel="JAVA Object + FLEX 通信"click="remotingHelloJavaFlex();"x="142"y="234"  
               fontSize
="12"width="209"/>  
    
<mx:Labeltext="姓名"x="121"y="55"fontSize="15"/>  
    
<mx:TextInputid="nameInputTxt"x="170"y="55"/>  
    
<mx:Labelx="121"y="103"fontSize="15"text="密码:"/>  
    
<mx:TextInputid= "txtPwd"x="170"y="106"/>  
    
<mx:Labelx="121"y="145"fontSize="15"text="电话:"/>  
    
<mx:Labelx="121"y="187"fontSize="15"text="邮箱:"/>  
    
<mx:TextInputid="txtTel"x="170"y="148"/>  
    
<mx:TextInputid="txtUserMail"x="170"y="190"/>  
      
    
<mx:RemoteObjectdestination="someOneComeDes"id="someOneCome"endpoint="/BlazDSObject/messagebroker/amf"fault="failed()"/>  
      
</mx:Application>

      在这里,Flex是通过AMF协议与Java对象进行交互的,其中endpoint定义了影射文件的消息协议,这个文件来自/WEB-INF/flex /services-config.xml中,影射对象的位置是通过remoting-service.xml影射的代码如下:

<channel-definition id="my-secure-amf"class="mx.messaging.channels.SecureAMFChannel">  
            
<endpoint url="https://{server.name}:{server.port}/{context.root}/messagebroker/amfsecure"class="flex.messaging.endpoints.SecureAMFEndpoint"/>  
            
<properties>  
                
<add-no-cache-headers>false</add-no-cache-headers>  
            
</properties>  
        
</channel-definition>

      remoting-service.xml

<?xml version="1.0" encoding="UTF-8"?>  
<serviceid="remoting-service"   
    class
="flex.messaging.services.RemotingService">  
  
    
<adapters>  
        
<adapter-definitionid="java-object"class="flex.messaging.services.remoting.adapters.JavaAdapter"default="true"/>  
    
</adapters>  
  
    
<default-channels>  
        
<channelref="my-amf"/>  
    
</default-channels>  
      
    
<destinationid="someOneComeDes">  
        
<properties>  
            
<source>  
                com.cx.action.IntroduceOneself  
            
</source>