到SMTP E附件支持

代码说明：

java写的支持附件的SMTP邮件程序.在分析以往一些排课软件的基础上，提出一个通用的排课管理信息系统的设计方法，并对一些具体的技术问题作出相应安排-support annex to the SMTP e-mail programs. The analysis of the past, some of the Course Scheduling software, based on a common course arrangement management information system design methods, as well as some specific technical problems to make the necessary arrangements