FLEX-ComboBox绑定JAVA返回的数据源（RemoteObject）

     此文转载自：  http://blog.youkuaiyun.com/matianyi0307/archive/2009/03/20/4008228.aspx

 

     场景：底层通过JAVA从数据库中取出Authority中的职位信息（rid： 职位ID，rname：职位名称），将其存入HashMap中，并将HashMap全部存入一个List返回给Flex，并绑定在ComboBox上。

FLEX Display组件：

 

1. <?xml version="1.0" encoding="utf-8"?>  
2.   
3. <mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="712" height="563" showCloseButton="true" title="新建用户" x="288" y="226" xmlns:ns1="ui.panel.admin.*" initialize="getPos()">  
4.     <mx:Script>  
5.         <[CDATA[   
6.             import mx.collections.ArrayCollection;   
7.             import mx.controls.List;   
8.             import mx.rpc.events.ResultEvent;   
9.             import mx.controls.Alert;   
10.             [bindable]   
11.             private var posArray:ArrayCollection = new ArrayCollection();   
12.                            
13.             function getPos():void{   
14.                 hasuser.getRoles();   
15.             }   
16.                
17.             function getPosition(event:ResultEvent):void{   
18.                 posArray = event.result as ArrayCollection;   
19.                 position.dataProvider = posArray;   
20.             }   
21. function close():void{   
22.                                 trace(""+position.selectedItem.rid);   
23.                         }   
24.         ]]>  
25.     </mx:Script>  
26.     <mx:RemoteObject id="hasuser" destination="islogin">  
27.     <mx:method name="getRoles" result="getPosition(event)"/>  
28.     </mx:RemoteObject>  
29.            
30.     <mx:ComboBox x="426" y="249" id="position" width="160.75" editable="false" color="#0B333C" fontSize="12" prompt="请选择职位..." fontWeight="bold" labelField="rname" close="close()"></mx:ComboBox>  
31. </mx:TitleWindow>  

<?xml version="1.0" encoding="utf-8"?> <mx:TitleWindow xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" width="712" height="563" showCloseButton="true" title="新建用户" x="288" y="226" xmlns:ns1="ui.panel.admin.*" initialize="getPos()"> <mx:Script> <[CDATA[ import mx.collections.ArrayCollection; import mx.controls.List; import mx.rpc.events.ResultEvent; import mx.controls.Alert; [bindable] private var posArray:ArrayCollection = new ArrayCollection(); function getPos():void{ hasuser.getRoles(); } function getPosition(event:ResultEvent):void{ posArray = event.result as ArrayCollection; position.dataProvider = posArray; } function close():void{ trace(""+position.selectedItem.rid); } ]]> </mx:Script> <mx:RemoteObject id="hasuser" destination="islogin"> <mx:method name="getRoles" result="getPosition(event)"/> </mx:RemoteObject> <mx:ComboBox x="426" y="249" id="position" width="160.75" editable="false" color="#0B333C" fontSize="12" prompt="请选择职位..." fontWeight="bold" labelField="rname" close="close()"></mx:ComboBox> </mx:TitleWindow>

 

其中close()函数是来测试选中项目的值。

 

RemoteObject配置：

 

1. <?xml version="1.0" encoding="UTF-8"?>  
2. <service id="remoting-service" class="flex.messaging.services.RemotingService">  
3.   
4.     <adapters>  
5.         <adapter-definition id="java-object"  
6.             class="flex.messaging.services.remoting.adapters.JavaAdapter"  
7.             default="true" />  
8.     </adapters>  
9.   
10.     <default-channels>  
11.         <channel ref="my-amf" />  
12.     </default-channels>  
13.   
14.     <destination id="islogin">  
15.         <properties>  
16.             <source>com.pmo.action.RolesAction</source>  
17.         </properties>  
18.     </destination>  
19.   
20. </service>  

<?xml version="1.0" encoding="UTF-8"?> <service id="remoting-service" class="flex.messaging.services.RemotingService"> <adapters> <adapter-definition id="java-object" class="flex.messaging.services.remoting.adapters.JavaAdapter" default="true" /> </adapters> <default-channels> <channel ref="my-amf" /> </default-channels> <destination id="islogin"> <properties> <source>com.pmo.action.RolesAction</source> </properties> </destination> </service>

 

 

取出数据相关代码:

 

1. List<Authority> l = q.list();   
2.            
3.         List l2 = null;   
4.         if (l.size()!=0) {   
5.                
6.             l2 = new ArrayList();   
7.             for(int i=0;i<l.size();i++){   
8.                 HashMap hm = new HashMap();   
9.                 hm.put("rid",""+((Authority)l.get(i)).getRid());   
10.                 hm.put("rname",""+((Authority)l.get(i)).getRname());   
11.                 l2.add(hm);   
12.             }   
13.         }   
14. return l2;