Maven依赖:

    cn.hutool
    hutool-all
    4.6.1


    javax.mail
    mail
    1.4.7


    邮件发送步骤
    ` import cn.hutool.core.collection.CollUtil;
    import cn.hutool.core.io.FileUtil;
    import cn.hutool.extra.mail.MailAccount;
    import cn.hutool.extra.mail.MailUtil;

    import java.util.ArrayList;

    public class Email {
    public Email()
    { //1、设置邮件账号
    _MailAccount mailAccount= new MailAccount();
    mailAccount.setHost(“smtp.qq.com”);
    mailAccount.setPort(587);
    mailAccount.setAuth(true);
    mailAccount.setFrom(“发送方QQ号@qq.com”);
    mailAccount.setUser(“发送方QQ号”);
    mailAccount.setPass(“发送方QQ邮箱授权码”);
    //1、单个发邮件
    MailUtil._send( mailAccount,接收方邮件地址”, “标题 “, “内容”, false:是否为html);
    //2、群发
    // 群发对象
    _ArrayList lists= CollUtil._newArrayList
    (“接收方邮件地址1”,“接收方邮件地址2”);
    MailUtil.send(mailAccount, 接收对象列表, “标题”, “内容”, false);

    1. _//带文件和附件<br /> _MailUtil._send_(mailAccount, lists, **"html内容和附件"**, **"<a>https://www.iteye.com/blog/zwm2018-2439833</a>"**,**true**, FileUtil._file_(**"D:\\image\\images\\b0.png"**):附件);
    2. }

    }

    `