能实现通讯录的管理,能很方便的进行用户的查询，添加，删除，修改等操作！-To achieve the management of contacts, can be very convenient for the user' s query, add, delete, modify, such as the operation!

利用客户端服务器模式，实现远程联系人访问，利用socket实现-Use the client server mode, to realize the remote access contacts, use socket realized