extjs 分页使用jsp传递数据示例

ext.onready(function() {

store3 = new ext.data.jsonstore({
autodestroy: true,
totalproperty : 'totle',
url: 'service.do',
storeid: 'mystore',
root: 'data',
fields : [ 'id', "name", "pw" ]
});

var pagingtoolbar = new ext.pagingtoolbar({
emptymsg : "没有数据",
displayinfo : true,
displaymsg : "显示从{0}条数据到{1}条数据，共{2}条数据",
store : store3,
pagesize : 50
});

var grade = new ext.grid.gridpanel({
title : "数据列表",
store : store3,
height : 300,
bbar : pagingtoolbar,
columns : [ {
header : "id",
dataindex : "id",
width : 300
}, {
header : "name",
dataindex : "name",
width : 300
}, {
header : "pw",
dataindex : "pw"
} ],
region : 'center'
});

var panel = new ext.viewport({
layout : 'border',
items : [ grade ]
});
});

protected void service(httpservletrequest request,
httpservletresponse response) throws servletexception, ioexception {

list list = new arraylist();
for (int i = 0; i < 50; i++) {
person p = new person();
p.setid("id" + i);
p.setname("name" + i);
p.setpw("pw" + i);
list.add(p);
}
stringbuffer info = new stringbuffer();
info.append("{totle:2000,data:");
info.append(jsonarray.fromobject(list));
info.append("}");
system.out.println(info.tostring());
system.out.println("*****dopos");
request.setattribute("info", info.tostring());
request.getrequestdispatcher("/info.jsp").forward(request, response);
}

<%@ page language="java" contenttype="text/html; charset=utf-8"
pageencoding="iso-8859-1"%>
${info}

<?xml version="1.0" encoding="utf-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/xmlschema-instance"
xmlns="http://www.51sjk.com/Upload/Articles/1/0/261/261411_20210702000422659.jpg" xmlns:web="http://www.51sjk.com/Upload/Articles/1/0/261/261411_20210702000422659.jpg/web-app_2_5.xsd"
xsi:schemalocation="http://www.51sjk.com/Upload/Articles/1/0/261/261411_20210702000422659.jpg http://www.51sjk.com/Upload/Articles/1/0/261/261411_20210702000422659.jpg/web-app_2_5.xsd"
id="webapp_id" version="2.5">
<servlet>
<servlet-name>test</servlet-name>
<servlet-class>com.aa.testaction</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>test</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>