springBoot中的邮件发送

1. 添加依赖

<dependency>

      <groupId>org.springframework.boot</groupId>

      <artifactId>spring-boot-starter-mail</artifactId>

</dependency>

2. impl

 public String sendWord() {

        User user1 = new User();

        user1.setId("1");

        user1.setUsername("李四");

        user1.setSex("男");

        User user2 = new User();

        user2.setId("2");

        user2.setUsername("小王");

        user2.setSex("女");

        User user3 = new User();

        user3.setId("3");

        user3.setUsername("张三");

        user3.setSex("男");

        List<User> list = new ArrayList<>();

        list.add(user1);

        list.add(user2);

        list.add(user3);

        try {

            Workbook wb = new SXSSFWorkbook(500);

            CellStyle style = wb.createCellStyle();

            Sheet sheet = wb.createSheet();

            sheet.setColumnWidth(0, 6200);

            sheet.setColumnWidth(1, 3800);

            sheet.setColumnWidth(2, 6200);

            for (int i = 3; i <= 11; i++) {

                sheet.setColumnWidth(i, 3766);

            }

            Row row = sheet.createRow(0);

            row.setRowStyle(style);

            Cell cell0 = row.createCell(0);

            cell0.setCellStyle(style);

            cell0.setCellValue("id");

            Cell cell1 = row.createCell(1);

            cell1.setCellStyle(style);

            cell1.setCellValue("姓名");

            Cell cell2 = row.createCell(2);

            cell2.setCellStyle(style);

            cell2.setCellValue("性别");

            int rownum = 1;

            CellStyle cellStyle = wb.createCellStyle();

            for (User user : list) {

                Row r = sheet.createRow(rownum);

                r.createCell(0);

                Cell c0 = r.createCell(0);

                c0.setCellStyle(cellStyle);

                c0.setCellValue(user.getId());

                Cell c1 = r.createCell(1);

                c1.setCellStyle(cellStyle);

                c1.setCellValue(user.getUsername());

                Cell c2 = r.createCell(2);

                c2.setCellStyle(cellStyle);

                c2.setCellValue(user.getSex());

                rownum++;

            }

            // wb.write(out);

            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            wb.write(baos);

            baos.flush();

            byte[] bt = baos.toByteArray();

            InputStream is = new ByteArrayInputStream(bt, 0, bt.length);

            baos.close();

            String email = "接收人的@qq.com";

            sendMail("保险产品审核推送表", email, "邮件正文", is);

            return "success";

        } catch (Exception e) {

            e.printStackTrace();

        }

        return "error";

    }

    /**

     *

     * @param subject 邮件的主题

     * @param toMail  接收人的邮箱

     * @param content 邮件的正文

     * @param is 发送的附件为流内容

     * @return

     */

    public static boolean sendMail(String subject, String toMail, String content, InputStream is) {

        boolean isFlag = false;

        try {

            String smtpFromMail = "[email protected]";  //账号

            String pwd = "password"; //密码

            int port = 25; //端口

            String host = "smtp.163.com"; //邮件服务器地址

            Properties props = new Properties();

            props.put("mail.smtp.host", host);

            props.put("mail.smtp.auth", "true");

            Session session = Session.getDefaultInstance(props);

            session.setDebug(false);

            MimeMessage message = new MimeMessage(session);

            try {

                message.setFrom(new InternetAddress(smtpFromMail, "发件人的名称"));

                /*批量发送*/

//                InternetAddress[] adc = {new InternetAddress("[email protected]"), new InternetAddress("[email protected]")};

//                message.addRecipients(Message.RecipientType.TO, adc);

                message.addRecipient(Message.RecipientType.TO, new InternetAddress(toMail));

                message.setSubject(subject);

                message.addHeader("charset", "UTF-8");

                /*添加正文内容*/

                Multipart multipart = new MimeMultipart();

                BodyPart contentPart = new MimeBodyPart();

                contentPart.setText(content);

                contentPart.setHeader("Content-Type", "text/html; charset=UTF-8");

                multipart.addBodyPart(contentPart);

                /*添加附件*/

                MimeBodyPart fileBody = new MimeBodyPart();

                DataSource source = new ByteArrayDataSource(is, "application/msexcel");

                fileBody.setDataHandler(new DataHandler(source));

                String fileName = "附件.xlsx";

                // 中文乱码问题

                fileBody.setFileName(MimeUtility.encodeText(fileName));

                multipart.addBodyPart(fileBody);

                message.setContent(multipart);

                message.setSentDate(new Date());

                message.saveChanges();

                Transport transport = session.getTransport("smtp");

                transport.connect(host, port, smtpFromMail, pwd);

                transport.sendMessage(message, message.getAllRecipients());

                transport.close();

                isFlag = true;

            } catch (Exception e) {

                e.printStackTrace();

                isFlag = false;

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

        return isFlag;

    }

3. yml配置

server:

  port: 8081

spring:

  mail:

    host: smtp.163.com

    username: [email protected]

    password: password

    properties:

      mail:

        smtp:

          auth: true

          starttls:

            enable: true

            required: true