//自定义一个的js

function commodityQuery() {

Ext.state.Manager.setProvider(Ext.create('Ext.state.CookieProvider'));

// Set up a model to use in our Store

Ext.define('Commodity', {

extend: 'Ext.data.Model',

fields: [

{name: 'commodityId', type: 'int'},

{name: 'commodityName',  type: 'string'},

{name: 'price',  type: 'float'},

{name: 'agio',  type: 'float'}

]

});

var store = Ext.create('Ext.data.Store', {

model: 'Commodity',

proxy: {

type: 'ajax',

url : 'commodityQuery',

successProperty:'success',

reader: {

type: 'json',

root: 'results'

}

},

autoLoad: {start:0,limit:4}

});

var gridPanel = Ext.create('Ext.grid.Panel', {

width : 586,

height : 375,

store : store,

columns : [ {

text : "商品编号",

dataIndex : "commodityId",

sortable : true

}, {

text : "商品名称",

dataIndex : "commodityName",

sortable : true

}, {

text : "商品价格",

dataIndex : "price",

sortable : true,

autoWidth : 50

}, {

text : "商品折扣",

dataIndex : "agio",

sortable : true

} ],

forceFit : true,

bbar : [ Ext.create("Ext.toolbar.Paging", {

store : store,

displayInfo : true,

displayMsg : "显示 {0} - {1} 条，共计 {2} 条",

emptyMsg : "没有任何记录",

width : "100%"

}) ]

});

var commodityQueryWindow = Ext.create("Ext.window.Window", {

width : 600,

height : 400,

title : "商品信息查询",

resizable : false,

modal : true,

items : gridPanel

});

commodityQueryWindow.show();

}

**********************

Struts.xml 中的配置

//method 可以写成DMI方式

<action name="commodityQuery" class="com.rjxy.action.CommodityQueryAction"          method="getCommodity" >

<result type="json">

<param name="root">responseJson</param>

</result>

</action>

**********************

CommodityQueryAction中的变量及方法

private String msg;

private List<Commodity> list;

private Integer totalCount;

private Map responseJson;

private SaleDaoImpl dao;

private Integer start;

private Integer limit;

/**

* Query Commodity  list.

*/

public String getCommodity(){

Map<String, Object> map = new HashMap<String, Object>();

try{

conn = GetConnection.getConn();//jdbc连接，网友可以用hibernate

dao = new SaleDaoImpl();

list = dao.queryAllOrder();

if(list != null){

this.setTotalCount(list.size());

map.put("results", list);

map.put("totalCount", totalCount);

this.setResponseJson(map);

}

return SUCCESS;

}catch(Exception e){

e.printStackTrace();

return ERROR;

}