摘要： 通过对一个基本的网络互联模型进行分析，得出多种通信方式组网下应用系统的一种解决方案：将通信网络从逻辑上抽象成为多个子网、多个终端用户，通过XML 进行描述，并在此描述的基础上实现了跨子网通信的路径搜索算法。

关键词: 二叉树；XML；路径搜索

Abstract: After analyzing an interconnection model of a basic network, a solution of application system under multi-communication network can be got. Many subnets and several terminal users from the net can be logically abstracted, it describes them using XML languages and finally realizes the route searching method (the binary-tree arithmetic) from one subnet to another

Key words: Binary-tree; XML; Route search