DataGrid绑定数据结果集

java代码：
service方法：
public ArrayList queryAllComm() {
// TODO Auto-generated method stub
String sql="select * from commodity";
System.out.println("sql:"+sql);
List list=dao.queryAll(sql);
ArrayList backList=new ArrayList();
for (int i = 0; i < list.size(); i++) {
CommEntity ce=new CommEntity();
List list1=(List) list.get(i);
ce=new CommEntity();
String name=list1.get(1).toString();
ce.setComm_name(name);
String money=list1.get(2).toString();
ce.setComm_money(money);
Object disc=list1.get(3);
if(disc!=null){
ce.setComm_disc(disc.toString());
}
backList.add(ce);
}
return backList;
}
CommEntity类：
import java.io.Serializable;

public class CommEntity implements Serializable {

private String comm_name;
private String comm_money;
private String comm_disc;

public String getComm_name() {
return comm_name;
}
public void setComm_name(String comm_name) {
this.comm_name = comm_name;
}
public String getComm_money() {
return comm_money;
}
public void setComm_money(String comm_money) {
this.comm_money = comm_money;
}
public String getComm_disc() {
return comm_disc;
}
public void setComm_disc(String comm_disc) {
this.comm_disc = comm_disc;
}
}
以下是Flex代码：
[Bindable]
public var salesList:Object;
<mx:RemoteObject id="comm"  destination="commImpl" result="salesList=event.result" fault="Alert.show(event.fault.faultString,'Error')"/>
<mx:DataGrid  id="myGrid" width="100%" height="100%" y="0" dataProvider="{salesList}" >
   <mx:columns>
       <mx:Array>
　　　<mx:DataGridColumn dataField="comm_name" headerText="商品名称"/>
　　　<mx:DataGridColumn dataField="comm_money" headerText="商品价格"/>
　　　<mx:DataGridColumn dataField="comm_disc" headerText="商品信息"/>
　　　　</mx:Array>
　　</mx:columns>
</mx:DataGrid>