TreeGrid数据不显示

Question

TreeGrid数据不显示，js也没有报错。不知道原因。

$('#test2').treegrid({
		url: '../../PurSelectGoodsCTL/CalculatePlanInfo?calculate='+ss.toString(),
		title: 'TreeGrid - ContextMenu',
		width: 1200,
		height: 500,
		fitColumns: true,
		rownumbers: true,
		idField:'id',
		treeField:'物料编码',
		columns:[[
			{field:'物料编码',title:'物料编码',width:80},
			{field:'物料名称',title:'物料名称',width:120},
			{field:'物料规格',title:'物料规格',width:120},
			{field:'计量单位',title:'计量单位',width:30,align:'right'},
			{field:'单位用量',title:'单位用量',width:30,align:'right'},
			{field:'库存数量',title:'库存数量',width:30,align:'center'},
			{field:'备注',title:'备注',width:60,align:'center'},
			{field:'物料编码bom',title:'物料编码bom',width:60,align:'center'}
		]]
	});

这是后台发过来的数据

这个数据格式我是参考easyui  demo里的treegrid_data3.json的数据格式写的。

{"total":117,"rows":[
	{"id":1,"code":"code1","name":"name1","addr":"address1"},
	{"id":11,"code":"code11","name":"name11","addr":"address11","_parentId":1},
	{"id":2,"code":"code2","name":"name2","addr":"address2","state":"closed"},
	{"id":21,"code":"code21","name":"name21","addr":"address21","_parentId":2},
	{"id":22,"code":"code22","name":"name22","addr":"address22","_parentId":2},
	{"id":3,"code":"code3","name":"name3","addr":"address3","state":"closed"}
]}

现实的结果却是什么也不显示。

问题出在哪里啊？

Answer 1

请问一下，你是如何处理根节点中 _parentId ：0的？

Answer 2

JSONArray ja = JSONArray.fromObject(ls);
		JSONObject jo=new JSONObject();
		jo.put("total", ls.size());
		jo.put("rows", ja);
		System.out.println(jo.toString());
		response.getWriter().write(jo.toString());

Answer 3

明天贴上来

Answer 4

刚把这个问题解决了，原因是静态TreeGrid需要判断树形的字段，"id"和"_parentId"必须是数字，我在后台的临时表把这2个列设成了字符串，所以怎么也显示不出来了。

Answer 5

后台处理的代码有吗？