JSP+EXt2.0实现分页的方法

本文实例讲述了jsp+ext2.0实现分页的方法。分享给大家供大家参考。具体如下：

javascript代码：

ext.onready(function(){
var sm = new ext.grid.checkboxselectionmodel();
var cm = new ext.grid.columnmodel([ 
  new ext.grid.rownumberer(), 
  sm, 
    {header:'编号',dataindex:'id',sortable:true}, 
    {header:'名称',dataindex:'name',sortable:true}, 
    {header:'性别',dataindex:'sex',sortable:true,renderer:function(value){ 
    if(value=='male'){ 
     return " <span style='color:red;font-weight:bold;'>红男 </span> <img src='./img/125.gif'>"; 
    }else{ 
     return " <span style='color:green;font-weight:bold;'>绿女 </span> <img src='./img/123.gif'>"; 
    }
    }}, 
    {header:'描述',dataindex:'descn',sortable:true} 
  ]); 
  cm.defaultsortable = true; 
  var ds = new ext.data.store({ 
    proxy: new ext.data.httpproxy({url:'page.jsp'}), 
    reader: new ext.data.jsonreader({ 
        totalproperty: 'totalproperty', 
        root: 'root'
  }, 
  [ 
    {name: 'id',mapping:'id'}, 
    {name: 'name',mapping:'name'}, 
    {name:'sex',mapping:'sex'}, 
    {name: 'descn',mapping:'descn'} 
  ]), 
  remotesort:true
  }); 
  var grid = new ext.grid.gridpanel({ 
  el: 'grid', 
  title:'ext grid test', 
  width:450, 
  height:410, 
  trackmouseover:false, 
  loadmask: {msg:'正在加载数据，请稍侯……'}, 
  store:ds, 
  cm: cm, 
  sm:sm, 
  bbar: new ext.pagingtoolbar({ 
      pagesize: 5, 
      store: ds, 
      displayinfo: true, 
      displaymsg: '当前显示 {0} - {1}条记录 /共 {2}条记录', 
      emptymsg: "no topics to display"
    }) 
  }); 
  grid.render(); 
  ds.load({params:{start:0, limit:5}}); 
});

jsp代码：

<%@ page language="java" pageencoding="utf-8"%>
<% 
string start = request.getparameter("start"); 
string limit = request.getparameter("limit");
int index = integer.parseint(start); 
int pagesize = integer.parseint(limit); 
string json = "{totalproperty:100,root:["; 
string sex="";
for (int i = index; i < pagesize + index; i++) { 
if(i%2==0)
{
  sex="male";
}
else{
  sex="female";
}
  json += "{id:" + i + ",name:'" + i + "',sex:'"+sex+"',descn:'descn" + i 
  + "'}"; 
  if (i != pagesize + index - 1) { 
  json += ","; 
  } 
} 
json += "]}"; 
response.getwriter().write(json); 
system.out.print(json); 
%>

希望本文所述对大家的jsp程序设计有所帮助。