1. 获取授权码

image.png
image.png
授权码只出现一次， 注意保存好

2. 引入jar包

  1. <dependency>
  2.   <groupId>org.springframework.boot</groupId>
  3.   <artifactId>spring-boot-starter-mail</artifactId>
  4. </dependency>

3. 配置文件

  1. spring:
  2.   application:
  3.     name: ml-mail-server
  4.   mail:
  5.     password: 授权码-非邮箱密码
  6.     default-encoding: utf-8
  7.     host: smtp.163.com
  8.     username: 用户名

4. 代码示例：

  1. /**
  2.  * @author ml
  3.  */
  4. @RestController
  5. @RequestMapping("/email")
  6. public class EmailController {
  8.     @Autowired
  9.     private JavaMailSender mailSender;
  11.     /**
  12.      * 邮件接收人
  13.      */
  14.     private final String[] SET_TO = new String[]{"xx@163.com","xx@163.com"};
  16.     /**
  17.      * 邮件发送人
  18.      */
  19.     private final String SET_FROM = "xx@163.com";
  21.     /**
  22.      * 发送纯文本
  23.      */
  24.     @RequestMapping("/sendText")
  25.     public ResultResponse sendText(){
  26.         SimpleMailMessage message = new SimpleMailMessage();
  27.         //发送人
  28.         message.setFrom("xx@163.com");
  29.         //收件人(可批量)
  30.         message.setTo("xx@163.com");
  31.         // 邮箱标题
  32.         message.setSubject("Java发送邮箱Demo 纯文本");
  33.         // 邮箱内容
  34.         message.setText("测试 Spring Boot 集成邮箱发送功能的！");
  35.         // 抄送人
  36.         message.setCc("xxqq.com");
  37.         // 发送邮件
  38.         mailSender.send(message);
  39.        return ResultResponse.success();
  40.     }
  42.     /**
  43.      * 发送html
  44.      */
  45.     @RequestMapping("/sendHtml")
  46.     public ResultResponse sendHtml() throws MessagingException {
  47.         MimeMessage message = mailSender.createMimeMessage();
  48.         MimeMessageHelper mimeHelper = new MimeMessageHelper(message, true);
  49.         // 发件人
  50.         mimeHelper.setFrom("xx@163.com");
  51.         // 收件人
  52.         mimeHelper.setTo("xx@163.com");
  53.         // 邮箱标题
  54.         mimeHelper.setSubject("HTML");
  55.         // 邮箱内容
  56.         mimeHelper.setText("<h2>MimeMessageHelper测试</h2>", true);
  57.         // 仍然使用 JavaMailSender 接口发送邮件
  58.         mailSender.send(message);
  60.         return ResultResponse.success();
  61.     }
  63.     @RequestMapping("/addAttachment")
  64.     public ResultResponse sendMailWithAttachment() throws MessagingException {
  65.         MimeMessage message = mailSender.createMimeMessage();
  66.         MimeMessageHelper mimeWithAttachment = new MimeMessageHelper(message, true);
  67.         // 发件人
  68.         mimeWithAttachment.setFrom("xx@163.com");
  69.         // 收件人
  70.         mimeWithAttachment.setTo(SET_TO);
  71.         // 邮箱标题
  72.         mimeWithAttachment.setSubject("发送邮件(带附件)");
  73.         // 邮箱内容
  74.         mimeWithAttachment.setText("添加附件..");
  76.         // 1 附件添加图片
  77.         mimeWithAttachment.addAttachment("1.png", new File("D:\\1.png"));
  78.         mimeWithAttachment.addAttachment("222.docx", new File("D:\\222.docx"));
  79.         mimeWithAttachment.addAttachment("333.xlsx", new File("D:\\222.docx"));
  81.         // 仍然使用 JavaMailSender 接口发送邮件
  82.         mailSender.send(message);
  83.         return ResultResponse.success();
  84.     }
  86.     @RequestMapping("/embeddedPic")
  87.     public ResultResponse mailWithEmbeddedPic() throws MessagingException {
  88.         MimeMessage message = mailSender.createMimeMessage();
  89.         MimeMessageHelper embeddedPic = new MimeMessageHelper(message, true);
  90.         // 发件人
  91.         embeddedPic.setFrom(SET_FROM);
  92.         // 收件人
  93.         embeddedPic.setTo(SET_TO);
  94.         //抄送给自己
  95.         embeddedPic.setCc(SET_FROM);
  96.         // 邮箱标题
  97.         embeddedPic.setSubject("发送邮件");
  98.         // 邮箱内容
  99.         embeddedPic.setText("发送内嵌图片..<img src='cid:1.png'/>",true);
  100.         // 添加内嵌图片
  101.         embeddedPic.addInline("1.png", new FileSystemResource(new File("D:\\1.png")));
  102.         // 仍然使用 JavaMailSender 接口发送邮件
  103.         mailSender.send(message);
  104.         return ResultResponse.success();
  105.     }
  106. }

5. 错误

5.1 邮件被识别为垃圾邮件

spring发邮件被识别为垃圾邮件：org.springframework.mail.MailSendException: Failed messages: com.sun.mail.smtp.SMTPSendFailedException: 554 DT:SPM 163

解决方案：
把发件人加入到抄送里面 embeddedPic.setCc(SET_FROM);