//展開根節點下的第一級子節點
function expendOneNode(event,treeId,treeNode){

zTree = $.fn.zTree.getZTreeObj("treeDemo");
var node = zTree.getNodes();
//console.log(treeId);
if(treeNode==null){
//將根節點全部展開節點
zTree.expandNode(node[0], true, false, false);//展開節點就會調用後臺查詢子節(異步)

//自定義一個標記，表示首次打開訪問日誌菜單 access-View.jsp查詢全部數據
$("#resource_manage_right").attr(‘src‘,"${appRoot}/log/viewAccessCheckedTreeLog.action?businessId=allData");
}
}

zTree異步展開根節點下的所有子節點