简单邮件收发系统设计实现论文.doc

毕业设计(论文) 设计（论文）题目 简单邮件收发系统的设计与实现 学生姓名 专业班级 指导老师 系主任（院长） 评 阅 人 年5月23日 简单邮件收发系统的设计与实现 摘 要 网络技术渐渐成熟，电子邮件技术也越来越成熟。现今，电子邮件（E-mail）是Internet上使用最为广泛的一种服务。 本论文设计并实现了一个电子邮件收发系统，该系统可以使用户更加方便的管理电子邮件，用户不用登陆网页，就可以收取和发送电子邮件。Simple Mail Transfer Protocol,简单邮件传输协议)与SMTP服务器进行对话。收取邮件部分是基于POP3(Post Office Protocol version 3,邮局协议)与POP服务器进行对话。电子邮件收发信息不只支持英文，而且支持中文。由于RFC882限制电子邮件的文本只能采用US ASCⅡ字符集，所以本系统采用MIME编码解码，扩展信件规范。最后，对该系统进行了测试。 论文分别从系统涉及的基础知识、系统的设计与实现和系统实现采用的关键技术进行详细说明。论文最后还对全文作出了总结。 关键词：信体结构，SMTP，POP3，MIME A Design and Implement of Simple Mail System Abstract Network technology is becoming more and more nature, and E-mail technology is developed fast. Nowadays, E-mail has become a most used service on Internet. The dissertation designs and implements a Simple Mail System. The users can easily manage the E-mail by using this system. They can check and send E-mail without landing website. The system includes three main modules: User setting, E-mail sending, E-mail checking. It uses a C/S architecture. The server is a SMTP server or a POP server, and the client is a sending and checking E-mail tool. The part of User setting is used to register users, it storage the information in the local disk. The part of E-mail sending is communicating with the SMTP server by Simple Mail Transfer Protocol and the part of E-mail checking is communicating with the POP server by Post Office Protocol. The Simple Mail System support not only English, but also Chinese. Limited by RFC822, the text of E-mail can only use ASCⅡ character set. Thus, this system makes use of MIME to encoding and decoding, and expanding mail norms. In the end, I make a testing for the Simple Mail System. The dissertation introduces the system from the following aspects: the purpose of the design, the design and the implement of the system, the key technologies, and so on. Finally, it makes a summary