发送邮件，记录日志，maven环境，注解详细。ecliipse开发环境，jdk1.7。发送邮件核心包是三个。用的apache封装的包进行二次开发-Send mail, logging, maven environment, annotation in detail. Jdk1.7 ecliipse development environment. Send mail core packages is three. Encapsulated with apache package for seco