datagrid url json

<div class="easyui-accordion" style="width:500px;height:300px;">
    <div title="About" data-options="iconCls:'icon-ok'" style="overflow:auto;padding:10px;">
        <h3 style="color:#0099FF;">Accordion for jQuery</h3>
        <p>Accordion is a part of easyui framework for jQuery. It lets you define your accordion component on web page more easily.</p>
    </div>
    <div title="Help" data-options="iconCls:'icon-help'" style="padding:10px;">
        <p>The accordion allows you to provide multiple panels and display one at a time. Each panel has built-in support for expanding and collapsing. Clicking on a panel header to expand or collapse that panel body. The panel content can be loaded via ajax by specifying a 'href' property. Users can define a panel to be selected. If it is not specified, then the first panel is taken by default.</p>
    </div>
    <div title="DataGrid" style="padding:10px" data-options="
                selected:true,
                tools:[{
                    iconCls:'icon-reload',
                    handler:function(){
                        $('#dg').datagrid('reload');
                    }
                }]">
        <table id="dg" class="easyui-datagrid"
               data-options="url:'/accordion/getgjdata',fit:true,fitColumns:true,singleSelect:true">
            <thead>
                <tr>
                    <th data-options="field:'itemid',width:80">Item ID</th>
                    <th data-options="field:'productid',width:100">Product ID</th>
                    <th data-options="field:'listprice',width:80,align:'right'">List Price</th>
                    <th data-options="field:'unitcost',width:80,align:'right'">Unit Cost</th>
                    <th data-options="field:'attr1',width:150">Attribute</th>
                    <th data-options="field:'status',width:50,align:'center'">Status</th>
                </tr>
            </thead>
        </table>
    </div>
</div>

data-options="url:'/accordion/getgjdata',fit:true,fitColumns:true,singleSelect:true">

fitColumns（自适应列宽）设置true时，将自动使列适应表格宽度以防止出现水平滚动

nowrap="false"