user.jsExt.onReady(function(){
var cm = new Ext.grid.ColumnModel([{
header:"age",
dataIndex:'age'
},{
header:"id",
dataIndex:'id'
},{
header:"name",
dataIndex:'name'
},{
header:"sex",
dataIndex:'sex'
}]); var store = new Ext.data.Store({
proxy:new Ext.data.HttpProxy({url:'/cyz/ext/user.do'}),
reader:new Ext.data.JsonReader({
totalProperty:'totalRows',
root:'root'
},
[
{name: 'age'},
{name: 'id'},
{name: 'name'},
{name: 'sex'}
]),
failure : function() {
Ext.Msg.alert("数据加载失败!请检查");
}
}); var grid = new Ext.grid.GridPanel({
title:"root",
width:600,
height:200,
cm:cm,
store:store
});
store.load();
grid.render("table");
});UserAction.javapublic ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws Exception {
UserForm userform = (UserForm)form;
String hql = "from User u";
List list = managerDao.getByHql(hql);//通过hql语句获取user表中的信息
StringBuilder str = new StringBuilder();
JSONArray jsonArray = JSONArray.fromObject(list);
String json = "{totalRows : 10, root:" + jsonArray.toString() + "}";
response.setHeader("X-JSON", json.toString());
response.setCharacterEncoding("utf-8");
response.setHeader("Cache-Control", "no-cache");// 清除缓存
response.getWriter().print(json);// 将 json 串写入输出流中
System.out.println(json);
return mapping.findForward("user");
}打印出的json数据:{totalRows : 10, root:[{"age":24,"id":1,"name":"cyz","sex":"m"}]}
var cm = new Ext.grid.ColumnModel([{
header:"age",
dataIndex:'age'
},{
header:"id",
dataIndex:'id'
},{
header:"name",
dataIndex:'name'
},{
header:"sex",
dataIndex:'sex'
}]); var store = new Ext.data.Store({
proxy:new Ext.data.HttpProxy({url:'/cyz/ext/user.do'}),
reader:new Ext.data.JsonReader({
totalProperty:'totalRows',
root:'root'
},
[
{name: 'age'},
{name: 'id'},
{name: 'name'},
{name: 'sex'}
]),
failure : function() {
Ext.Msg.alert("数据加载失败!请检查");
}
}); var grid = new Ext.grid.GridPanel({
title:"root",
width:600,
height:200,
cm:cm,
store:store
});
store.load();
grid.render("table");
});UserAction.javapublic ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) throws Exception {
UserForm userform = (UserForm)form;
String hql = "from User u";
List list = managerDao.getByHql(hql);//通过hql语句获取user表中的信息
StringBuilder str = new StringBuilder();
JSONArray jsonArray = JSONArray.fromObject(list);
String json = "{totalRows : 10, root:" + jsonArray.toString() + "}";
response.setHeader("X-JSON", json.toString());
response.setCharacterEncoding("utf-8");
response.setHeader("Cache-Control", "no-cache");// 清除缓存
response.getWriter().print(json);// 将 json 串写入输出流中
System.out.println(json);
return mapping.findForward("user");
}打印出的json数据:{totalRows : 10, root:[{"age":24,"id":1,"name":"cyz","sex":"m"}]}
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String clk=request.getParameter("callback");
String json="";
if(clk!=null)
json+=clk+"(";
json+="{totalRows : 10, root:" + jsonArray.toString() + "}";
if(clk!=null)
json+=")";其中callback一般不会等于NULL,呵呵
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<link rel="stylesheet" type="text/css" href="ext-2.2/resources/css/ext-all.css">
<script type="text/javascript" src="ext-2.2/adapter/ext/ext-base.js"></script>
<script type="text/javascript" src="ext-2.2/ext-all.js"></script>
<!-- 本地化的脚本引用在这里 -->
<script type="text/javascript">
Ext.onReady(function(){
var cm = new Ext.grid.ColumnModel([{
header:"age",
dataIndex:'age'
},{
header:"id",
dataIndex:'id'
},{
header:"name",
dataIndex:'name'
},{
header:"sex",
dataIndex:'sex'
}]); var store = new Ext.data.Store({
proxy:new Ext.data.HttpProxy({
url:'data.xml'}),
reader:new Ext.data.JsonReader({
totalProperty:'totalRows',
root:'root'
},
[
{name: 'age'},
{name: 'id'},
{name: 'name'},
{name: 'sex'}
]),
failure : function() {
Ext.Msg.alert("数据加载失败!请检查");
}
}); var grid = new Ext.grid.GridPanel({
title:"root",
width:600,
height:200,
cm:cm,
store:store
});
store.load();
grid.render("table");
}); </script> <title>Application Layout Tutorial</title>
</head>
<body>
<div id="table"></div>
</body>
</html>
data.xml{totalRows : 10, root:
[
{"age":24,"id":1,"name":"aaaa","sex":"m"},
{"age":25,"id":2,"name":"bbbb","sex":"f"},
{"age":26,"id":3,"name":"ccc","sex":"m"}
]
}
将以上代码放到你的服务器目录下,修改ext路径。
如果可以显示结果说明你的jsp代码有问题,
如果不可以显示数据说明你ext的包有问题。
如果是jsp有问题你可以在url里输入/cyz/ext/user.do看看结果和控制台打印的是不是一样的。如果一样的那应该就不是java代码的问题了。
把控制台的输出的数据复制到xml文件就能够显示,直接从后天拿就不能显示,
请教是不是编码问题
如果要,是那些?