easyui datagrid queryParmas 传后台中文乱码问题

function doSearchGrid(val){
var node = $("#tree_area").tree("getSelected");
var _grid = $("#grid_admin_area");
var queryParams = _grid.datagrid('options').queryParams;
queryParams.pid = node ? node.id : $.App.getMemberInfo().areaId;
queryParams.name = encodeURI(val);//先编码
_grid.datagrid('options').queryParams = queryParams;//encodeURI(JSON.stringify(params)
_grid.datagrid("reload");
}

然后再controller解码

IParameterCondition ipc = this.getParameterCodition();
String name = URLDecoder.decode(ipc.getValue("name"), "UTF-8");