ext 的grid可以显示头部，但是内容显示不了

[dm520]

ext.js

Ext.onReady(
	function(){
		 Ext.state.Manager.setProvider(new Ext.state.CookieProvider());
		function renderSex(value) {
		    if (value == 'male') {
		        return "<span style='color:red;font-weight:bold;'>红男</span>";
		    } else {
		        return "<span style='color:green;font-weight:bold;'>绿女</span>";
		    }
		}
		var sm=new Ext.grid.CheckboxSelectionModel();
		var cm  = new Ext.grid.ColumnModel([
			new Ext.grid.RowNumberer(),
			sm,
			{header:'编号',sortable: true,dataIndex:'id',width: 100},
			{header:'姓名',sortable: true,dataIndex:'name',width: 100},
			{header:'性别',sortable: true,dataIndex:'sex',width: 100,renderer:renderSex},
			{header:'描述',sortable: true,dataIndex:'descn',width: 100}
		]);

		var ds=new Ext.data.JsonStore(
		{url:'grid.jsp',
		 root:'root',
		 fields : [{name : 'id'}, {name : 'name'},{name : 'sex'}, {name : 'descn'}]
		});

		ds.load({params:{start:0,limit:10}});
		
		var grid=new Ext.grid.GridPanel({
			el: 'grid',
			sm:sm,
			ds:ds,
			cm:cm,
			bbar: new Ext.PagingToolbar({
				pageSize: 10,
     			store: ds,
				displayInfo: true,
				displayMsg: '显示第 {0} 条到 {1} 条记录，一共 {2} 条',
				emptyMsg: '没有记录'
    		}),
        height:500,
        width:600,
        title:'Array Grid'
		});
	    grid.render();	
});

grid.jsp

<%
String start = request.getParameter("start");
String limit = request.getParameter("limit");
try {
    int index = Integer.parseInt(start);
    int pageSize = Integer.parseInt(limit);

    String json = "{totalProperty:100,root:[";
    for (int i = index; i < pageSize + index; i++) {
        json += "{id:'" + i + "',name:'name" + i +"'sex:'sex"+i+ "',descn:'descn" + i + "'}";
        if (i != pageSize + index - 1) {
            json += ",";
        }
    }
    json += "]}";
    response.getWriter().write(json);
} catch(Exception ex) {
}
%>

[lihan6415151528]

帮顶

[sy_binbin]

http://download.csdn.net/source/639238

LZ下载这个看看

[dm520]

已经找到问题所在了 ，在

 for (int i = index; i < pageSize + index; i++) {
        json += "{id:'" + i + "',name:'name" + i +"',sex:'sex"+i+ "',descn:'descn" + i + "'}";
        if (i != pageSize + index - 1) {
            json += ",";
        }
    }

就是少了个“，”号
晕死了 搞了这么好几个小时。