Flex使用RemotingObject和后台通信的基本步骤

代码如果混乱看附件

编写java类，类的方法如果要返回多个对象则一般返回对象数组，这里使用的是spring+hibernate

• java 代码

  package cn.com.fire.fireshow.service;
  
  import java.io.Serializable;
  import java.util.Date;
  import java.util.Iterator;
  import java.util.List;
  
  import org.springframework.context.ApplicationContext;
  import org.springframework.context.support.FileSystemXmlApplicationContext;
  
  import cn.com.fire.fireshow.domain.Meetings;
  import cn.com.fire.util.dao.BaseDAO;
  import cn.com.fire.util.page.PageBean;
  
  public class MeetingService {
  
      private BaseDAO dao;
  
      public void setDao(BaseDAO dao) {
          this.dao = dao;
      }
  
      public MeetingService()
      {
          ApplicationContext ctx = ApplicationContextInit.getApplicationContext();
          dao = (BaseDAO)ctx.getBean("baseDAO");
      }
  
      public void insertMeeting(Meetings meeting)
      {
          dao.insertObject(meeting);
      }
  
      public void deleteMeetingByID(Serializable meetingID)
      {
          dao.deleteObjectByID(Meetings.class, meetingID);
      }
  
      public void deleteMeetingByIDs(Serializable[] meetingIDs)
      {
          dao.deleteObjectByIDs(Meetings.class, meetingIDs);
      }
  
      public void updateMeeting(Meetings meeting)
      {
          dao.updateObject(meeting);
      }
  
      public void updateMeetings(Meetings[] meetings)
      {
          dao.updateObject(meetings);
      }
  
      public Meetings queryMeetingByID(Serializable meetingID)
      {
          return (Meetings)dao.queryObjectByID(Meetings.class, meetingID);
      }
  
      public List queryMeetingPage(PageBean pageBean, String hql)
      {
          return dao.queryObjectPage(pageBean, hql);
      }
  
      public Meetings[] queryMeetingByHQL(String hql)
      {
          List list = dao.queryObjectByHQL(hql);
          Meetings[] meetings = new Meetings[list.size()];
          for (int i = 0; i < list.size(); i++) {
              Meetings meeting = (Meetings)list.get(i);
              meetings[i] = meeting;
          }
          return meetings;
      }
  
      public static void main(String[] args)
      {
          MeetingService ms = new MeetingService();
          Meetings meeting = new Meetings();
          meeting.setMaxClient(new Integer(10));
          meeting.setMeetingEndDate(new Date());
          meeting.setMeetingMotif("中国人");
          meeting.setMeetingName("视频会议");
          meeting.setMeetingOrganiger("大陆的中国人");
          meeting.setMeetingPassword("password");
          meeting.setMeetingStartDate(new Date());
          //ms.insertMeeting(meeting);
          //List list = ms.queryMeetingByHQL("from Meetings meetings");
          //System.out.println(list.size());
      }
  }

 

编辑项目的WEB-INF/flex/目录下的remoting-config.xml，添加对java类的引用：

<destination id="meetingService">
        <properties>
            <source>cn.com.fire.fireshow.service.MeetingServicesource>
        properties>
    destination>

 

编写前台mxml文件

<!---->xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="initApp()">
    <mx:Script>
        <!---->
            import mx.controls.Alert;
            import mx.utils.ArrayUtil;

            private function initApp():void
            {
                queryMeetings.queryMeetingByHQL("from Meetings meetings");
            }
            private function formatDate(item:Object,column:DataGridColumn):String
            {
                return df.format(item.meetingEndDate);
            }// df 是一个 DateFormatter，在下面会给出。关于如何格式化DataGrid的显示
            private function formatDate2(item:Object,column:DataGridColumn):String
            {
                return df.format(item.meetingStartDate);
            }
            private function proccessResult(result:Object):void
            {
                meetingDG.dataProvider = ArrayUtil.toArray(result);
            }
        ]]>
    mx:Script>

    <mx:DateFormatter id="df" formatString="YYYY年MM月DD日"/>

    <mx:RemoteObject id="queryMeetings" destination="meetingService" showBusyCursor="true" result="proccessResult(event.result)" fault="Alert.show(event.fault.faultString,'Error')">
    mx:RemoteObject>

    <mx:TitleWindow width="981" height="329" layout="absolute" title="会议管理列表" horizontalCenter="-48" verticalCenter="-92.5">
        <mx:Grid width="802" horizontalCenter="-22" y="83">
            <mx:GridRow width="100%" height="100%">
                <mx:GridItem width="100%" height="100%">
                    <mx:DataGrid id="meetingDG" editable="true" enabled="true">
                        <mx:columns>
                            <mx:DataGridColumn headerText="会议编号" dataField="meetingId"/>
                            <mx:DataGridColumn headerText="会议名称" dataField="meetingName"/>
                            <mx:DataGridColumn headerText="会议密码" dataField="meetingPassword"/>
                            <mx:DataGridColumn headerText="最大参与人数" dataField="maxClient"/>
                            <mx:DataGridColumn headerText="会议发起人" dataField="meetingOrganiger"/>
                            <mx:DataGridColumn headerText="会议主题" dataField="meetingMotif"/>
                            <mx:DataGridColumn headerText="会议开始时间" dataField="meetingStartDate" labelFunction="formatDate2"/>
                            <mx:DataGridColumn headerText="会议结束时间" dataField="meetingEndDate" labelFunction="formatDate"/>
                        mx:columns>
                    mx:DataGrid>
                mx:GridItem>
            mx:GridRow>
            <mx:GridRow width="100%" height="100%">
                <mx:GridItem width="100%" height="100%">
                    <mx:Button label="保存会议"/>
                    <mx:Button label="删除会议"/>
                mx:GridItem>
            mx:GridRow>
        mx:Grid>
    mx:TitleWindow>

mx:Application>