extjs获取list数据的问题

Question

我在action里获取一个list并存放在了session里ServletActionContext.getContext().put("pList",pList);
现在我要在extjs里获得pList并做成下拉框，
struts2的配置文件如下
<package name="demo" extends="json-default">
     <action name="BugAciton" class="com.nine.action.BugAction" method="managePage">
     <result type="json">
     <param name="root">pList</param>
     </result>
     </action>
</package>那么我在ext里应该怎么写呢？刚刚开始学ext什么都不会，求教大神

Answer 1

是这样么？ 
var prostore=Ext.create('Ext.data.Store',{
     model:'proinfo',
     autoLoad:true,
proxy:  {
type: 'ajax',//Ext.data.AjaxProxy
url : 'BugAciton',
reader: new Ext.data.JsonReader({    
    totalProperty: 'totalCount',    
     root: 'pList'},[
             {name:'project'},
         ])
 }
   }); -------定义数据源
   xtype:'combo',        
   name:'project',
fieldLabel : '项目名*',
store:prostore,//配置数据源
displayField:'project',
valueField:'project',
queryMode:'local',
forceSelection:true,
typeHead:true,

Answer 2

reader: new Ext.data.ArrayReader({})

Answer 3

就是Combobox..
//布种 直接从数据库读去数据生成列表
                var fabircTypeDs = new Ext.data.Store({
                     proxy: new Ext.data.HttpProxy({
                          url: CONTEXT_PATH+'/fabrictype/fabrictypeAll.action'
                     }),
                     reader: selReader,
                     remoteSort: false
                    });
                fabircTypeDs.load();
                var fabircTypeCmb = new Ext.form.ComboBox({
                    fieldLabel: '布种',
                    store: fabircTypeDs,
                    hiddenName:'softId',
                    loadingText: 'searching...',
                    displayField : 'name',
                    mode:'local',
                    editable : false,
                    valueField: 'id',
                    width: 170,
                    triggerAction: 'all'
                    });
                    //供应商   当用户输入数据时根据输入信息进行模糊查询，动态生成列表，类似google搜索框
                var dsSupplier = new Ext.data.Store({
                            proxy: new Ext.data.ScriptTagProxy({
                               url:CONTEXT_PATH+'/supplier/supplierAll.action'
                          }),
                              reader: new Ext.data.JsonReader({
                                root: 'gridRows',
                               totalProperty: 'totalCount'
                            }, [
                                  {name: 'id', mapping: 'id'},
                                {name: 'name', mapping: 'name'}
                              ])
                        });
                var supplierCmb = new Ext.form.ComboBox({
                    fieldLabel:'供应商',
                    store: dsSupplier,
                    displayField:'name',
                    valueField: 'id',
                    typeAhead: true,
                    loadingText: 'loading...',
                    width: 170,
                    hiddenName:'name',
                    hideTrigger:true,
                    minChars:1,
                    forceSelection:true,
                    triggerAction: 'all'
                });