SpringBoot发送邮件

QQ邮箱设置中开启POP3/SMTP服务

• pom文件

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

• 配置文件

  ## QQ邮箱配置
  spring:
    mail:
      host: smtp.qq.com #发送邮件服务器
      username: 152****117@qq.com  #发送邮件的邮箱地址
      password:  agq********fb #客户端授权码，不是邮箱密码，这个在qq邮箱设置里面自动生成的
      properties.mail.smtp.port: 465 #端口号465或587
      from: 152****117@qq.com  # 发送邮件的地址，和上面username一致
     #不设置以下属性会报错：Could not connect to SMTP host: smtp.qq.com, port: 465, response: -1
      properties.mail.smtp.starttls.enable: true
      properties.mail.smtp.starttls.required: true
      properties.mail.smtp.ssl.enable: true
      default-encoding: utf-8
  

• 代码实现

  • 接口代码

    package com.qiankai.qqlogin.util.sendmail;
    
    /**
     * 发送邮件接口
     *
     * @author kai_qian
     * @version v1.0
     * @since 2020/02/25 11:32
     */
    public interface IMailService {
    
        /**
         * 发送文本邮件
         * @param to 收件人
         * @param subject 主题
         * @param content 内容
         */
        void sendSimpleMail(String to, String subject, String content);
    
        /**
         * 发送HTML邮件
         * @param to 收件人
         * @param subject 主题
         * @param content 内容
         */
        void sendHtmlMail(String to, String subject, String content);
    
        /**
         * 发送带附件的邮件
         * @param to 收件人
         * @param subject 主题
         * @param content 内容
         * @param filePath 附件
         */
        void sendAttachmentsMail(String to, String subject, String content, String filePath);
    }
    
    

  • 业务实现代码

    package com.qiankai.qqlogin.util.sendmail;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.core.io.FileSystemResource;
    import org.springframework.mail.SimpleMailMessage;
    import org.springframework.mail.javamail.JavaMailSender;
    import org.springframework.mail.javamail.MimeMessageHelper;
    import org.springframework.stereotype.Service;
    
    import javax.mail.MessagingException;
    import javax.mail.internet.MimeMessage;
    import java.io.File;
    
    /**
     * 发送邮件的实现类
     *
     * @author kai_qian
     * @version v1.0
     * @since 2020/02/25 11:32
     */
    @Service
    public class IMailServiceImpl implements IMailService {
        private final Logger logger = LoggerFactory.getLogger(this.getClass());
    
        @Autowired
        private JavaMailSender mailSender;
    
        /**
         * 我的QQ邮箱
         */
        @Value("${spring.mail.from}")
        private String from;
    
        @Override
        public void sendSimpleMail(String to, String subject, String content) {
            //创建SimpleMailMessage对象
            SimpleMailMessage message = new SimpleMailMessage();
            //邮件发送人
            message.setFrom(from);
            //邮件接收人
            message.setTo(to);
            //邮件主题
            message.setSubject(subject);
            //邮件内容
            message.setText(content);
            //发送邮件
            mailSender.send(message);
        }
    
        @Override
        public void sendHtmlMail(String to, String subject, String content) {
            //获取MimeMessage对象
            MimeMessage message = mailSender.createMimeMessage();
            MimeMessageHelper messageHelper;
            try {
                messageHelper = new MimeMessageHelper(message, true);
                //邮件发送人
                messageHelper.setFrom(from);
                //邮件接收人
                messageHelper.setTo(subject);
                //邮件主题
                message.setSubject(subject);
                //邮件内容，html格式
                messageHelper.setText(content, true);
                //发送
                mailSender.send(message);
                //日志信息
                logger.info("邮件已经发送。");
            } catch (MessagingException e) {
                logger.error("发送邮件时发生异常！", e);
            }
        }
    
        @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 = filePath.substring(filePath.lastIndexOf(File.separator));
                helper.addAttachment(fileName, file);
                mailSender.send(message);
                //日志信息
                logger.info("邮件已经发送。");
            } catch (MessagingException e) {
                logger.error("发送邮件时发生异常！", e);
            }
        }
    }
    
    

  • 直接调用方法即可

  @RestController
  

@RequestMapping("/mail")
public class EmailController {
/** 邮件接收者 */
private static final String TEST_RECEIVER = "xxxxxxx@qq.com";

@Autowired
private IMailService mailService;

@GetMapping("/simple")
public String sendSimpleMail() {
    mailService.sendSimpleMail(TEST_RECEIVER, "你好，普通邮件","内容：第一封邮件");
    return "simple-ok";
}

@GetMapping("/html")
public String sendHTMLMail() {
    mailService.sendSimpleMail(TEST_RECEIVER,"主题：你好html邮件","<h1>内容：</h1><p>第一封html邮件<p>");
    return "html-ok";
}

}
```

参考博客
https://www.jianshu.com/p/a7097a21b42d
https://www.cnblogs.com/eatandsleep/p/12205573.html