JDOM解析XML做的一个基于网格的portal程序，收集一些各节点主机的基本信息，涉及一个遍历算法。开发平台：Elipse3.1+JBO-JDOM parsing XML to do a grid-based portal procedures, the nodes collect some basic information mainframe, involving a traversal algorithm. Development platform : Elipse3.1 JBO