一、属性key不加双引号,value加双引号,对于url的value,添加‘’单引号;url的访问地址可以使用以下格式:

datagrid中的url格式:

var datagrid;
$(function(){
datagrid = $('#datagrid').datagrid({
url : '<%= request.getContextPath()%>/userController/list.do',
toolbar : '#toolbar',
title : '用户列表',
iconCls : '',
pagination : true,
pageSize : 10,
pageList : [ 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 ],
fit : true,
fitColumns : true,
nowrap : false,
border : false,
idField : 'id',
columns:[[
{
title:'编号',
field:'id',
width:100,
sortable:true
},

{
title:'姓名',
field:'name',
width:100,
sortable:true
},

{
title:'密码',
field:'password',
width:100,
},

{
title:'年龄',
field:'age',
width:100,
sortable:true
},

{
title:'地址',
field:'address',
width:100,
},

{
title:'学历',
field:'education',
width:100,
},

{
title:'身份证号',
field:'identity',
width:100,
},
{
title:'手机',
field:'phon',
width:100,
},

{
title:'单位名称',
field:'unitname',
width:100,
},

{
title:'单位地址',
field:'unitaddress',
width:100,
},

{
title:'注册时间',
field:'createDate',
width:100,
},

{
title:'状态',
field:'status',
width:100,
},

{
title:'上次修改时间',
field:'modificationTime',
width:100,
},

{
title:'上传文件',
field:'uploadFile',
width:100,
},

{
title:'ip',
field:'ip',
width:100,
}
]],
toolbar:[
{
text:'增加',
iconCls:'icon-add',
handler:function(){

}
},'-',
{
text:'删除',
iconCls:'icon-remove',
handler:function(){

}
},
'-',
{
text:'修改',
iconCls:'icon-edit',
handler:function(){

}
},
'-',
{
text:'查询',
iconCls:'icon-search',
handler:function(){

}
}
]
});
});

easyui的tree需要的添加json格式的变量中的url的格式:

var treeData=[{
id: "dispatchingManagement",
text: "调度管理",
state: "closed",
children: [{
id: "taskcenter",
text: "任务中心",
attributes : {
url:'<iframe width="100%" height="100%" frameborder="0" src="<%= request.getContextPath()%>/userController.do?hh" style="width:100%;height:100%;margin:0px 0px;"></iframe>'
}
}, {
id: "programmeApproval",
text: "方案审批",
attributes : {
url:""
}
}]
}, {
text: "用户管理",
state: "closed",
children: [{
id: "yhgl",
text: "用户管理",
attributes: {
url : '<iframe width="100%" height="100%" frameborder="0" src="<%= request.getContextPath()%>/userController.do?center" style="width:100%;height:100%;margin:0px 0px;"></iframe>'
}
}]
}];

二、url访问注意地址跳转否?若跳转后报$ is not defind等问题,那就在跳转后的界面添加需要引入的文件