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cs

eclipse document for management

实验目的


运用Java语言,以迭代方式逐步编程实现一个小型档案管理系统。由此了解软件开发的一般过程,深入理解面向对象语言的基本概念和基本原理, 理解和掌握继承与多态、异常处理、输入输出流、GUI设计、JDBC数据库操作、网络编程、多线程等技术;熟练掌握在Java语言环境下,上述技术的具体实现方法。

系统功能与描述


  1. 实现功能
  • GUI界面(添加背景框)
  • 用户增删改查功能
  • 文件上传下载功能
  • 客户端服务端通信
  • 多线程阻塞异步实现。多个客户端并行,并采用同步方法实现
  1. 拓展功能
  • 退出系统时服务端客户端响应,及时中断socket连接,结束客户端进程。
  • 基于socket实现客户端上传文件到服务端,从服务端下载文件到客户端。
  • 基于socket通过简易自定义TCP的通信协议实现客户端与数据库分离,用户的增删改查全部由服务端进行。具体过程有:
    • 客户端发送协议头 action表明客户端行为,接着发送可变协议体byte用来进行通信。
    • 服务端接收协议头解析协议头。
    • 服务端通过协议头调用相关方法进行响应
    • 服务端通过简易自定义TCP的通信协议将响应结果反馈回客户端。
  • 背景类的继承,通过BJPanel继承JPanel,重写paint方法,并通过构造函数重载来达到背景图片的自适应大小,以此对背景功能的封装。

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