javax.mail发送邮件功能

java发送邮件

package com.cinc.messageservice.message.mail.util;

import com.cinc.messageservice.message.mail.dto.MailDto;
import com.cinc.messageservice.utils.EmptyUtils;
import lombok.extern.slf4j.Slf4j;

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.*;
import javax.mail.internet.*;
import java.util.Date;
import java.util.Properties;

/**
 * @Author: hhr
 * @Despriction: 邮件发送
 * @CreatedTime: 2020/3/12 10:07
 * @ModifyBy:
 * @ModifyTime:
 * @ModifyDespriction:
 * @Version: V1.0.0
 */
@Slf4j
public class MailUtil {

    public boolean sendMail(Boolean isSingle, MailDto mailDto) throws MessagingException {

        //初始化
        Session session = this.authenticationMail();

        try {
            //设置消息
            MimeMessage message = getMimeMessage(isSingle, session, mailDto);
            //发送
            Transport transport = session.getTransport();
            transport.connect(mailDto.getMailAccount(), mailDto.getMailLicense());
            transport.sendMessage(message, message.getAllRecipients());

            transport.close();

        }catch (MessagingException e){
            e.printStackTrace();
            return false;
        }

        return true;
    }

    /**
     *  验证信息认证
     * @return
     * @throws MessagingException
     */
    private Session authenticationMail() throws MessagingException {
        Session session;
        try {
            Properties props = new Properties();
            //设置用户的认证方式
            props.setProperty("mail.smtp.auth", "true");
            //设置传输协议
            props.setProperty("mail.transport.protocol", "smtp");
            //设置发件人的SMTP服务器地址
            props.setProperty("mail.smtp.host", "smtp.exmail.qq.com");
            props.put("mail.smtp.ssl.enable", "true"); //qq的ssl加密
            session = Session.getInstance(props);
            session.setDebug(true);
        } catch (Exception e) {
            e.printStackTrace();
            throw new MessagingException("认证失败");
        }
        return session;
    }

    /**
     * @param isSingle 是否单发
     *                 <P>true-向指定的一个收件人发送邮件
     *                 <P>false-向多个收件人群发邮件
     *                 <P>群发时多个收件人之间用英文逗号','分割
     * @param mailDto 邮件实体
     */
    private MimeMessage getMimeMessage(Boolean isSingle, Session session, MailDto mailDto)
            throws MessagingException {
        if (EmptyUtils.isStringEmpty(mailDto.getMailTiTle())) {
            throw new MessagingException("邮件标题不能为空");
        }
        if (EmptyUtils.isStringEmpty(mailDto.getMailContent())) {
            throw new MessagingException("邮件内容不能为空");
        }

        MimeMessage message = new MimeMessage(session);
        try {
            //设置发件人地址
            message.setFrom(new InternetAddress(mailDto.getMailAccount()));
        } catch (MessagingException e) {
            throw new MessagingException("发件人地址错误");
        }
        /*
          设置收件人地址
          MimeMessage.RecipientType.TO:发送
          MimeMessage.RecipientType.CC：抄送
          MimeMessage.RecipientType.BCC：密送
         */
        if (isSingle) {
            message.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress(mailDto.getRecipients()));
        } else {
            message.setRecipients(Message.RecipientType.TO, InternetAddress.parse(mailDto.getRecipients()));
        }
        //设置抄送人
        if (!EmptyUtils.isStringEmpty(mailDto.getCopyRecipients())){
            message.setRecipients(MimeMessage.RecipientType.CC, InternetAddress.parse(mailDto.getCopyRecipients()));
        }

        //设置邮件标题
        message.setSubject(mailDto.getMailTiTle(), "UTF-8");
        //设置邮件内容
        message.setContent(mailDto.getMailContent(), "text/html;charset=UTF-8");
        //设置附件
        if (!EmptyUtils.isStringEmpty(mailDto.getMailFilePath())){
            try {
                Multipart multipart = new MimeMultipart();
                BodyPart part = new MimeBodyPart();
                // 加入附件
                FileDataSource ds = new FileDataSource(mailDto.getMailFilePath());
                part.setDataHandler(new DataHandler(ds));
                part.setFileName(MimeUtility.encodeText(ds.getName()));
                multipart.addBodyPart(part);
                // 设置邮件内容
                message.setContent(multipart);
            }catch (Exception e){
                e.printStackTrace();
            }
        }
        message.setSentDate(new Date());
        return message;
    }


}

　　

package com.cinc.messageservice.message.mail.dto;

import lombok.Data;

/**
 * @Author: hhr
 * @Despriction: 邮件实体
 * @CreatedTime: 2020/3/12 9:59
 * @ModifyBy:
 * @ModifyTime:
 * @ModifyDespriction:
 * @Version: V1.0.0
 */
@Data
public class MailDto {

    /**
     * 邮件标题
     */
    private String mailTiTle;
    /**
     * 邮件内容
     */
    private String mailContent;
    /**
     * 附件路径
     */
    private String mailFilePath;
    /**
     * 收件人(们)-(多个人邮箱号逗号分隔)
     */
    private String recipients;
    /**
     * 抄送人(们)-(多个人邮箱号逗号分隔)
     */
    private String copyRecipients;
    /**
     * 发件人账号
     */
    private String mailAccount;
    /**
     * 发件人授权码
     */
    private String mailLicense;
    /**
     * 发件人是否启用
     */
    private String isUse;
}