java发送邮件程序，已经打包成jar包，导入项目后只需调用静态方法即可实现发送邮件功能。做的比较粗糙，没有发送附件功能，但是“邮件找回/修改密码”，“反馈意见”等功能够用了。亲测163邮箱可用。-Java send mail application, have been packaged into a jar package, import the project after sending mail function can be realized just call static meth