spring boot 邮件发送

依赖引入

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

配置信息


spring:
mail:
host: smtp.qq.com
username: [email protected]
password : capbgbwiqweqweqw
default-encoding: UTF-8


注意：password不是邮箱密码，是需要开通的POP3/SMTP的密码！

service接口

/**
 * @author : Aslan
 * @version : v1.0
 * @time : 2018-07-16 11:14
 * @desc : 邮件服务
 */
public interface MailService {

    public void sendSimpleMail(String to, String subject, String content);

    public void sendHtmlMail(String to, String subject, String content);

    public void sendAttachmentsMail(String to, String subject, String content, String filePath);

    public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId);

}

service实现

/**
 * @author : Aslan
 * @version : v1.0
 * @time : 2018-07-16 11:13
 * @desc : 输入描述
 */
@Component
public class MailServiceImpl implements MailService{

    private final Logger logger = LoggerFactory.getLogger(this.getClass());

    @Autowired
    private JavaMailSender mailSender;

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

    /**
     * 发送文本邮件
     * @param to
     * @param subject
     * @param content
     */
    @Override
    public void sendSimpleMail(String to, String subject, String content) {
        SimpleMailMessage message = new SimpleMailMessage();
        message.setFrom(from);
        message.setTo(to);
        message.setSubject(subject);
        message.setText(content);

        try {
            mailSender.send(message);
            logger.info("简单邮件发送成功");
        } catch (Exception e) {
            logger.error("发送简单邮件时发生异常！", e);
        }

    }

    /**
     * 发送html邮件
     * @param to
     * @param subject
     * @param content
     */
    @Override
    public void sendHtmlMail(String to, String subject, String content) {
        MimeMessage message = mailSender.createMimeMessage();

        try {
            //true表示需要创建一个multipart message
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);

            mailSender.send(message);
            logger.info("html邮件发送成功");
        } catch (MessagingException e) {
            logger.error("发送html邮件时发生异常！", e);
        }
    }


    /**
     * 发送带附件的邮件
     * @param to
     * @param subject
     * @param content
     * @param filePath
     */
    @Override
    public void sendAttachmentsMail(String to, String subject, String content, String filePath){
        MimeMessage message = mailSender.createMimeMessage();

        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);

            FileSystemResource file = new FileSystemResource(new File(filePath));
            String fileName = file.getFilename();
            helper.addAttachment(fileName, file);
            //helper.addAttachment("test"+fileName, file);

            mailSender.send(message);
            logger.info("带附件的邮件发送成功");
        } catch (MessagingException e) {
            logger.error("发送带附件的邮件时发生异常！", e);
        }
    }


    /**
     * 发送正文中有静态资源（图片）的邮件
     * @param to
     * @param subject
     * @param content
     * @param rscPath
     * @param rscId
     */
    @Override
    public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId){
        MimeMessage message = mailSender.createMimeMessage();

        try {
            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setFrom(from);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content, true);

            FileSystemResource res = new FileSystemResource(new File(rscPath));
            helper.addInline(rscId, res);

            mailSender.send(message);
            logger.info("嵌入静态资源的邮件发送成功");
        } catch (MessagingException e) {
            logger.error("发送嵌入静态资源的邮件时发生异常！", e);
        }
    }
}

测试

/**
 * @author : Aslan
 * @version : v1.0
 * @time : 2018-07-16 11:27
 * @desc : 输入描述
 */
@RunWith(SpringRunner.class)
@SpringBootTest
public class MailServiceImplTest {

    @Autowired
    private MailService mailService;

    @Autowired
    private TemplateEngine templateEngine;

    @Test
    public void testSimpleMail() throws Exception {
        mailService.sendSimpleMail("[email protected]","spring boot学习之简单邮件","这是我的第一封简单邮件，使用万能的spring boot发送");
    }

    @Test
    public void testHtmlMail() throws Exception {
        String content="<html>\n" +
                "<body>\n" +
                "    <h3>这是一封html邮件! 哈哈哈哈</h3>\n" +
                "</body>\n" +
                "</html>";
        mailService.sendHtmlMail("[email protected]","HTML邮件测试",content);
    }

    @Test
    public void sendAttachmentsMail() {
        String filePath="d:\\test.txt";
        mailService.sendAttachmentsMail("[email protected]", "主题：带附件的邮件测试", "有附件，请查收！", filePath);
    }


    @Test
    public void sendInlineResourceMail() {
        String rscId = "lixuan";
        String content="<html><body>这是有图片的邮件：<img src=\'cid:" + rscId + "\' ></body></html>";
        String imgPath = "d:\\test.jpg";

        mailService.sendInlineResourceMail("[email protected]", "主题：带图片的邮件测试", content, imgPath, rscId);
    }


    @Test
    public void sendTemplateMail() {
        //创建邮件正文
        Context context = new Context();
        context.setVariable("id", "006");
        String emailContent = templateEngine.process("/mail/emailTemplate", context);

        mailService.sendHtmlMail("[email protected]","主题：模板邮件测试",emailContent);
    }
}

其他

注意邮件内容不要写的太广告，而且短时间内不要太频繁发送，否则会被QQ邮箱封禁，有时会报错550 等，详细报错可以自行百度。