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。