XTree相信很多人都有所了解或者使用过。它所用面向对象的方式使得 生成一棵树非常简单。我在我所参与的项目中都使用XTree在页面生成树。,XTree believe that many people have understood or used. Its object-oriented approach to generate a tree makes is very simple. I participated in my project are the use of Spanning