springboot實現郵件功能：使用thymeleaf模板傳送郵件

1.建springboot專案，匯入依賴；application.properties配置檔案，看

使用thymeleaf模板需要在application.properties新增：

# THYMELEAF (ThymeleafAutoConfiguration)
spring.thymeleaf.check-template-location=true
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.excluded-view-names= # comma-separated list of view names   that should be excluded from resolution
 
spring.thymeleaf.view-names= # comma-separated list of view names that can be resolved
spring.thymeleaf.suffix=.html
spring.thymeleaf.mode=HTML5
spring.thymeleaf.encoding=UTF-8
spring.thymeleaf.content-type=text/html # ;charset=<encoding> is added

2.編寫服務介面，實現類：

/**
 * 郵件服務介面
 * Created by ASUS on 2018/5/5
 
 *
 * @Authod Grey Wolf
 */
public interface MailService {
/**
     * 傳送html格式的郵件
     * @param to
* @param subject
* @param content
*/
void sendHtmlMail(String to,String subject,String content);
}

/**
 *
 * 郵件服務類
 * Created by ASUS on 2018/5/5
 *
 * @Authod Grey Wolf
 */
@Service("mailService")
public class 
 
MailServiceImpl implements MailService {

    @Autowired
private JavaMailSender mailSender;
@Value("${mail.fromMail.addr}")
    private String form;


    /**
     * 傳送html格式的郵件
     * @param to 接受者
     * @param subject 主題
     * @param content 內容
     */
@Override
public void sendHtmlMail(String to, String subject, String content) {
        MimeMessage message=mailSender.createMimeMessage();
        try {
            //true表示需要建立一個multipart message
MimeMessageHelper helper=new MimeMessageHelper(message,true);
helper.setFrom(form);
helper.setTo(form);
helper.setSubject(subject);
helper.setText(content,true);
mailSender.send(message);
System.out.println("html格式郵件傳送成功");
}catch (Exception e){
            System.out.println("html格式郵件傳送失敗");
}
    }

  


}

3.編寫測試類：

/**
 * 傳送郵件測試類
 * Created by ASUS on 2018/5/5
 *
 * @Authod Grey Wolf
 */
@RunWith(SpringRunner.class)
@SpringBootTest
public class MailTest {

    @Autowired
private MailService mailService;
@Autowired
private TemplateEngine templateEngine;
@Value("${mail.fromMail.addr}")
    private String form;


    @Test
public void sendTemplateMail() throws  Exception{
        //建立郵件正文
         //是導這個包import org.thymeleaf.context.Context;
Context context = new Context();
context.setVariable("username","Grey Wolf");
//獲取thymeleaf的html模板
String emailContent= templateEngine.process("template", context);
mailService.sendHtmlMail(form,"這是thymeleaf模板郵件",emailContent);
}
}

4.測試效果：

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