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 org.springframework.boot
 spring-boot-starter-freemarker


 org.springframework.boot
 spring-boot-starter-mail


 org.springframework.boot
 spring-boot-starter-web



 org.projectlombok
 lombok
 true

spring:
 mail:
 port: 25
 username: ${username}
 password: ${password}
 protocol: smtp
 default-encoding: utf-8
 host: ${host}

@Service
public class MailServiceImpl implements MailService {

 //郵件的發(fā)送者
 @Value("${spring.mail.username}")
 private String from;

 //注入MailSender
 @Autowired
 private JavaMailSender mailSender;

 //發(fā)送郵件的模板引擎
 @Autowired
 private FreeMarkerConfigurer configurer;

 /**
 * @param params 發(fā)送郵件的主題對象 object
 * @param title 郵件標(biāo)題
 * @param templateName 模板名稱
 */
 @Override
 public void sendMessageMail(Object params, String title, String templateName) {

 try {

 MimeMessage mimeMessage = mailSender.createMimeMessage();
 MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
 helper.setFrom(from);
 helper.setTo(InternetAddress.parse("[email protected]"));//發(fā)送給誰
 helper.setSubject("【" + title + "-" + LocalDate.now() + " " + LocalTime.now().withNano(0) + "】");//郵件標(biāo)題

 Map model = new HashMap<>();
 model.put("params", params);
 try {
 Template template = configurer.getConfiguration().getTemplate(templateName);
 try {
 String text = FreeMarkerTemplateUtils.processTemplateIntoString(template, model);

 helper.setText(text, true);
 mailSender.send(mimeMessage);
 } catch (TemplateException e) {
 e.printStackTrace();
 }
 } catch (IOException e) {
 e.printStackTrace();
 }
 } catch (MessagingException e) {
 e.printStackTrace();
 }
 }
}

@Data
public class Message {

 private String messageCode;
 private String messageStatus;
 private String cause;

}

 
 





 
郵件消息通知
 

 

 
MessageCode
 
MessageStatus
 
Cause
 
 

 
${(params.messageCode)!""}
 
${(params.messageStatus)!""}
 
${(params.cause)!""}
 
 

@RestController
public class MailController {

 @Autowired
 private MailService mailService;

 @RequestMapping(value = "/sendMessage", method = RequestMethod.GET)
 public void sendMailMessage() {
 Message message = new Message();

 message.setMessageCode("MissingParameter");
 message.setMessageStatus("Failed");
 message.setCause("缺少參數(shù),請確認(rèn)");

 mailService.sendMessageMail(message, "測試消息通知", "message.ftl");
 }
}