Spring Boot发送邮件详解

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

spring.mail.host=smtp.qq.com spring.mail.username=用户名 //发送方的邮箱spring.mail.password=密码 //对于qq邮箱而言 密码指的就是发送方的授权码spring.mail.properties.mail.smtp.auth=true spring.mail.properties.mail.smtp.starttls.enable=true spring.mail.properties.mail.smtp.starttls.required=true

@Service public class MailService {  private final Logger logger = LoggerFactory.getLogger(this.getClass());    @Autowired  private JavaMailSender sender;    @Value("${spring.mail.username}")  private String from;    /**   * 发送纯文本的简单邮件   * @param to   * @param subject   * @param content   */  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 {    sender.send(message);    logger.info("简单邮件已经发送。");   } catch (Exception e) {    logger.error("发送简单邮件时发生异常！", e);   }  }    /**   * 发送html格式的邮件   * @param to   * @param subject   * @param content   */  public void sendHtmlMail(String to, String subject, String content){   MimeMessage message = sender.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);     sender.send(message);    logger.info("html邮件已经发送。");   } 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   */  public void sendAttachmentsMail(String to, String subject, String content, String filePath){   MimeMessage message = sender.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);     FileSystemResource file = new FileSystemResource(new File(filePath));    String fileName = filePath.substring(filePath.lastIndexOf(File.separator));    helper.addAttachment(fileName, file);        sender.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);   }  }    /**   * 发送嵌入静态资源（一般是图片）的邮件   * @param to   * @param subject   * @param content 邮件内容，需要包括一个静态资源的id，比如：<img src=/"cid:rscId01/" >   * @param rscPath 静态资源路径和文件名   * @param rscId 静态资源id   */  public void sendInlineResourceMail(String to, String subject, String content, String rscPath, String rscId){   MimeMessage message = sender.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);     FileSystemResource res = new FileSystemResource(new File(rscPath));    helper.addInline(rscId, res);        sender.send(message);    logger.info("嵌入静态资源的邮件已经发送。");   } catch (MessagingException e) {    logger.error("发送嵌入静态资源的邮件时发生异常！", e);   }  } }

public class MailTests extends BasicUtClass{  @Autowired  private MailService mailService;    private String to = "xujijun@mail.cn";    @Test  public void sendSimpleMail() {   mailService.sendSimpleMail(to, "主题：简单邮件", "测试邮件内容");  }  }