首先我们考虑一下在项目投票种用到的属性(ID,投票标题,备选项目,参与人数)
entity
package cn.entity;
public class GridNode {
private Long id;
private String title;
private Integer type ;
private String version;
private String options;
private String participants;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getVersion() {
return version;
}
public void setVersion(String version) {
this.version = version;
}
public String getOptions() {
return options;
}
public void setOptions(String options) {
this.options = options;
}
public String getParticipants() {
return participants;
}
public void setParticipants(String participants) {
this.participants = participants;
}
public GridNode() {
super();
// TODO Auto-generated constructor stub
}
public GridNode(Long id, String title, Integer type, String options,
String participants) {
super();
this.id = id;
this.title = title;
this.type = type;
this.options = options;
this.participants = participants;
}
public GridNode(Long id, String title, String options, String participants) {
super();
this.id = id;
this.title = title;
this.options = options;
this.participants = participants;
}
public Integer getType() {
return type;
}
public void setType(Integer type) {
this.type = type;
}
}
编写sl7.jsp(实现基础及配置)
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>"> <title>My JSP 'sl7.jsp' starting page</title>
<link rel="stylesheet" type="text/css" href="<%=path%>/easyUI/themes/default/easyui.css">
<link rel="stylesheet" type="text/css" href="<%=path%>/easyUI/themes/icon.css">
<link rel="stylesheet" type="text/css" href="<%=path%>/easyUI/css/demo.css">
<script src="<%=path%>/js/jquery-1.8.3.js"></script>
<script src="<%=path%>/js/jquery.easyui.min.js"></script> <script>
$(function(){
$('#dg').datagrid({ //远程请求数据的url路径
url:'<%=path%>/SL/sl7_server.jsp',
pagination:true, //显示底部分页栏
pageSize:5, //默认每页记录数
pageList:[5,10,15], //显示列表记录数的下拉框选项
columns:[[
{field:'ck',checkbox:true},
{field:'title',title:'投票标题',width:408},
{field:'options',title:'备选项数',width:60,align:'center'},
{field:'participants',title:'参与人数',styler:myStyler}
]],
singleSelect:true,
rownumbers:true,
iconCls: 'icon-search',
fitColumns:true,//自适应宽度，防止水平滚动
striped:true,//隔行变色
loadMsg:"正努力为您加载中......"
});
}); function myStyler(value,row,index){
if (value < 5){
return 'background-color:#ffee00;color:red;';
}else if(value > 15){
return 'color:green;';
}
}
</script> </head> <body>
<table id="dg" title="投票列表" class="easyui-grid" style="width:700px;height:215px"></table>
</body>
</html>
编写josn(添加数据与分页页数的配置)
<%@ page language="java" import="java.util.*,cn.entity.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%> <%
List<GridNode> list = new ArrayList<GridNode>();
list.add(new GridNode(1L,"选出你心目中最好的下载工具","2","6"));
list.add(new GridNode(2L,"选出你心目中最好的输入法","5","4"));
list.add(new GridNode(3L,"选出你心目中最好的浏览器","5","11"));
list.add(new GridNode(4L,"选出你心目中最好的杀毒软件","6","4"));
list.add(new GridNode(5L,"选出你心目中最好的社交软件","3","14"));
list.add(new GridNode(6L,"选出你心目中最好的聊天工具","3","2"));
list.add(new GridNode(7L,"选出你心目中最好的翻译软件","5","0"));
list.add(new GridNode(8L,"选出你心目中最好的播放器","2","23"));
list.add(new GridNode(9L,"选出你心目中最好的免费软件","4","7"));
list.add(new GridNode(10L,"选出你心目中最好的录音软件","4","18"));
list.add(new GridNode(11L,"选出你心目中最好的刷机软件","5","6")); //获取客户端传递的分页参数 默认参数rows表示每页显示记录条数， 默认参数page表示当前页数
Integer pageSize = Integer.parseInt(request.getParameter("rows"));
Integer pageNumber = Integer.parseInt(request.getParameter("page"));
StringBuilder builder = new StringBuilder("{\"total\":"+list.size()+",\"rows\":[");
int start = (pageNumber-1) * pageSize;//计算开始记录数
int end = start+pageSize;//计算结束记录数
for(int i=start;i<end && i<list.size();i++){
GridNode gn = list.get(i);
builder.append("{\"id\":\""+gn.getId()+"\",\"title\":\""+gn.getTitle()+"\",\"options\":"+gn.getOptions()+",\"participants\":"+gn.getParticipants()+"},");
}
String gridJSON = builder.toString();
if(gridJSON.endsWith(",")){
gridJSON = gridJSON.substring(0,gridJSON.lastIndexOf(","));
} out.print(gridJSON+"]}");
%>