SpringBoot中快速实现邮箱发送代码解析

<!-- 邮箱发送依赖 -->
<dependency>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<!-- 小火龙代码简化 -->
<dependency>
  <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
  <version>1.18.8</version>
</dependency>

# JavaMailSender 邮件发送的配置
spring.mail.host=smtp.qq.com
spring.mail.username=lovelyWu98k@qq.com
#授权码
spring.mail.password=
spring.mail.properties.mail.smtp.auth=true
spring.mail.properties.mail.smtp.starttls.enable=true
spring.mail.properties.mail.smtp.starttls.required=true
spring.mail.default-encoding=UTF-8

/**
 * 邮件信息实体
 *
 * @author:伍梓涛
 * @version:1.0.0
 * @Modified By:SimpleWu
 * @CopyRright (c)2019-:YUM架构平台
 */
@Data
public class MailEntity {
  private String to; //收件人
  private String subject;//标题
  private String text;//正文
  private boolean isHtml = false;//是否html邮件
  private List<String> files;//附件地址
  private Date sentDate;//发送时间

}

/**
 * 邮箱发送信息统一处理封装
 *
 * @author:伍梓涛
 * @version:1.0.0
 * @Modified By:SimpleWu
 * @CopyRright (c)2019-:YUM架构平台
 */
@Slf4j
public class MailEntityHelper {


  public static MimeMessageHelper craeteMessageHelper(MimeMessage mimeMessage, MailEntity mailBean) throws MessagingException {

    MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(mimeMessage, true);
    // mimeMessageHelper.setFrom(emailSender);//发件人
    mimeMessageHelper.setTo(mailBean.getTo());//收件人
    mimeMessageHelper.setSubject(mailBean.getSubject());//标题
    mimeMessageHelper.setText(mailBean.getText(), mailBean.isHtml());//是否html
    mimeMessageHelper.setSentDate(mailBean.getSentDate() == null ? new Date() : mailBean.getSentDate());// 客户端邮箱发送时间
    if (mailBean.getFiles() != null && mailBean.getFiles().size() > 0) {
      //附件添加
      mailBean.getFiles().forEach(filename -> {
        String ext = filename.substring(filename.lastIndexOf(".") + 1, filename.length());
        File diskfile = new File(filename);
        try {
          mimeMessageHelper.addAttachment(diskfile.getName(), diskfile);
        } catch (MessagingException e) {
          e.printStackTrace();
          log.error("设置附件失败:{}", mailBean);
        }
      });
    }
    return mimeMessageHelper;
  }

}

/**
 * 邮箱发送工具类
 *
 * @author:伍梓涛
 * @version:1.0.0
 * @Modified By:SimpleWu
 * @CopyRright (c)2019-:YUM架构平台
 */
@Component
@Slf4j
public class MailHelper {


  @Autowired
  private JavaMailSender javaMailSender;

  @Value("${spring.mail.username}")
  private String emailSender;

  private static MailHelper mailHelper;

  public MailHelper() {
    mailHelper = this;
  }

  /**
   * 构建静态获取实例
   *
   * @return
   */
  public static MailHelper buidler() {
    if (mailHelper == null) {
      return null;
    }
    return mailHelper;
  }

  /*public void sendSimpleMail(EmailContextPojo mailBean) {
    try {
      SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
      //邮件发送人
      simpleMailMessage.setFrom(emailSender);
      //邮件接收人
      simpleMailMessage.setTo(mailBean.getTo());
      //邮件主题
      simpleMailMessage.setSubject(mailBean.getSubject());
      //邮件内容
      simpleMailMessage.setText(mailBean.getText());
      javaMailSender.send(simpleMailMessage);
    } catch (Exception e) {
      e.printStackTrace();
      log.error("邮件发送失败", e.getMessage());
    }
  }*/


  public void sendMail(MailEntity mailBean) {
    MimeMessage mimeMailMessage = null;
    try {
      mimeMailMessage = javaMailSender.createMimeMessage();
      MimeMessageHelper mimeMessageHelper = MailEntityHelper.craeteMessageHelper(mimeMailMessage, mailBean);
      mimeMessageHelper.setFrom(emailSender);//发件人
      javaMailSender.send(mimeMailMessage);
    } catch (Exception e) {
      log.error("邮件发送失败", e.getMessage());
    }
  }


  public void sendMail(MailEntity... mailBeans) {
    //批量发送集合
    List<MimeMessage> mimeMessages = new ArrayList<>(mailBeans.length);
    try {
      if (mailBeans != null || mailBeans.length > 0) {
        for (int i = 0; i < mailBeans.length; i++) {
          MimeMessage mimeMailMessage = javaMailSender.createMimeMessage();
          MimeMessageHelper messageHelper = MailEntityHelper.craeteMessageHelper(mimeMailMessage, mailBeans[i]);
          messageHelper.setFrom(emailSender);//发件人
          mimeMessages.add(mimeMailMessage);
        }
      }

      MimeMessage[] resultMessage = new MimeMessage[mimeMessages.size()];
      mimeMessages.toArray(resultMessage);
      javaMailSender.send((resultMessage));
    } catch (Exception e) {
      log.error("邮件发送失败", e.getMessage());
    }
  }

}

 MailEntity emailContextPojo = new MailEntity();
 emailContextPojo.setSubject("Ycloud 邮箱标题");
 emailContextPojo.setText("Ycloud 邮箱正文");
 emailContextPojo.setTo(" 接收邮箱号 ");
 MailHelper.buidler().sendMail(emailContextPojo);

 emailContextPojo.setHtml(true);

emailContextPojo.setFiles(Arrays.asList("D:\\Yum系统架构平台\\004.高系统部署\\004.PXC\\部署手册.docx"));