无缓存定时发送带附件（表格）等邮件-Toy模板网

这篇具有很好参考价值的文章主要介绍了无缓存定时发送带附件（表格）等邮件。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

通过springBoot定时发送邮件

1.导入发送邮件的包

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-mail</artifactId>
        </dependency>

2.配置yml

  mail:
    host: smtp.exmail.qq.com ##邮件域名
    default-encoding: UTF-8
    port: 465
    protocol: smtps
    username: zzzzz@qq.com ## 发送人邮件
    password: sss  ##企业邮箱获取服务授权码，可以百度一下怎么申请授权码
    properties:
      mail:
        debug: false
        smtp:
          timeout: 10000
          connection-timeout: 10000
          writetimeout: 10000
          ssl:
            enabled: true
            required: true
          socketFactory:
            class: javax.net.ssl.SSLSocketFactory
            port: 465

3.添加定时任务

    /**
     * 每天12点更新
     * <p>
     * 0 0/1 * * * ?
     * <p>
     * 0 0 10 * * ?
     */
    @Scheduled(cron = "0 0 12 * * ?")
    public void endMailTask() throws IOException {
        if (scheduledOpen) {
            sendMailService.sendMail();
        }
    }

4.实现


@Service
public class SendMailServiceImpl implements SendMailService {

    private final Logger logger = LoggerFactory.getLogger(this.getClass());
    @Resource
    private JavaMailSender javaMailSender;

    @Resource
    private OrderDao orderDao;

    //发送人
    private String from = "test@qq.com";
    //接收人
    private String to = "test1@qq.com";
    //标题
    private String subject = "标题";
    //正文
    private String context = "标题";

    @Override
    public void sendMail() throws IOException {
        logger.info("开始发送邮件。");
        //getList
        InputStreamSource orderList = getOrderList();
        if (orderList == null) {
            return;
        }
        MimeMessage message = javaMailSender.createMimeMessage();
        try {
            MimeMessageHelper helper = setInfoByHelper(to, subject, context, message);
            helper.addAttachment("邮件名称.xls", orderList);
            javaMailSender.send(message);
            logger.info("带附件的邮件已经发送。");
        } catch (MessagingException e) {
            logger.error("发送带附件的邮件时发生异常！", e);
        }
        logger.info("结束发送邮件。");
    }

    /**
     * 利用helper设置各种邮件发送相关的信息
     */
    private MimeMessageHelper setInfoByHelper(String to, String subject, String content, MimeMessage message)
            throws MessagingException {
        //true表示需要创建一个multipart message
        MimeMessageHelper helper = new MimeMessageHelper(message, true);
        helper.setFrom(from);
        //接收人，可添加多个
        String[] receiveUsers =new String[]{"sss", "sss"};
        //抄送人，可添加多个
        String[] copyUsers = new String[]{"sssss"};
        helper.setTo(receiveUsers);
        helper.setCc(copyUsers);
        helper.setSubject(subject);
        helper.setText(content, true);
        return helper;

    }

    private InputStreamSource getOrderList() throws IOException {
        //
        // DateUtils.getDayStart()
        //业务逻辑
        List<OrderDO> orderAll = orderDao.getByStatusAndTime(ICBC_JH_DTQD.getItemCode(), 8 , dayStart, dayEnd);
        if (orderAll.isEmpty()) {
            return null;
        }
        //标头
        String[] headers = {"订单编号", "充值电话号码", "充值金额(单位：分)", "支付完成时间"};
        // 声明一个工作薄
        HSSFWorkbook wb = new HSSFWorkbook();
        // 生成一个表格
        HSSFSheet sheet = wb.createSheet("sheet0");
        HSSFRow row = sheet.createRow(0);
        // 设置表头字体样式
        HSSFFont columnHeadFont = wb.createFont();
        columnHeadFont.setFontName("宋体");
        columnHeadFont.setFontHeightInPoints((short) 10);
        // 列头的样式
        HSSFCellStyle columnHeadStyle = wb.createCellStyle();
        columnHeadStyle.setFont(columnHeadFont);
        columnHeadStyle.setLocked(true);
        columnHeadStyle.setWrapText(true);
        // 左边框的颜色
        columnHeadStyle.setLeftBorderColor(HSSFColor.BLACK.index);
        // 边框的大小
        columnHeadStyle.setBorderLeft(BorderStyle.valueOf((short) 1));
        // 右边框的颜色
        columnHeadStyle.setRightBorderColor(HSSFColor.BLACK.index);
        // 边框的大小
        columnHeadStyle.setBorderRight(BorderStyle.valueOf((short) 1));
        // 设置单元格的边框颜色
        columnHeadStyle.setBottomBorderColor(HSSFColor.BLACK.index);
        // 设置单元格的背景颜色（单元格的样式会覆盖列或行的样式）
        columnHeadStyle.setFillForegroundColor(HSSFColor.WHITE.index);
        // 设置普通单元格字体样式
        HSSFFont font = wb.createFont();
        font.setFontName("宋体");
        font.setFontHeightInPoints((short) 10);


        for (int i = 0; i < headers.length; i++) {
            HSSFCell cell = row.createCell(i);
            cell.setCellValue(new HSSFRichTextString(headers[i]));
            cell.setCellStyle(columnHeadStyle);
        }
        int rowIndex = 1;

        for (OrderDO orderDO : orderAll){
            row = sheet.createRow(rowIndex);
            rowIndex++;
            HSSFCell cell = row.createCell(0);
            cell.setCellValue(new HSSFRichTextString(orderDO.getOrderNo()));
            cell.setCellStyle(columnHeadStyle);

            cell = row.createCell(1);
            cell.setCellValue(new HSSFRichTextString(orderDO.getIssueAccountNum()));
            cell.setCellStyle(columnHeadStyle);

            cell = row.createCell(2);
            cell.setCellValue(new HSSFRichTextString(orderDO.getPrizeAmount().toString()));
            cell.setCellStyle(columnHeadStyle);

            cell = row.createCell(3);
            cell.setCellValue(new HSSFRichTextString(DateUtils.formatDateToStr(orderDO.getCompletionTime())));
            cell.setCellStyle(columnHeadStyle);

        }

        ByteArrayOutputStream os = new ByteArrayOutputStream(1000);
        wb.write(os);
        wb.close();
        InputStreamSource iss = new ByteArrayResource(os.toByteArray());
        os.close();
        return iss;
    }


}