初始化异步树直接所有展开代码:
$(function(){
$('#tt').tree({
url:'<%=request.getContextPath()%>/treeInit',
lines:true,
onLoadSuccess:function(node,data){
var t = $(this);
if(data){
$(data).each(function(index,d){
if(this.state == 'closed'){
t.tree('expandAll');
}
});
}
}
});
});