实现Spring发送邮件

Springboot实现发送邮件功能

首先我们导入spring的mail方法

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

获取邮箱授权码——QQ邮箱为例

打开QQ邮箱（网页）—>最上方的设置—>账号—>POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务

配置application.yml

application.yml
spring:
  mail:
    host: smtp.qq.com
    username: 你的邮箱（发送方邮箱）
    password: 你的邮箱授权码
    port: 465
    default-encoding: UTF-8
    properties:
      mail:
        smtp:
          auth: true
          starttls:
            enable: true
            required: true
          ssl:
            enable: true
          socketFactory:
            port: 465
            class: javax.net.ssl.SSLSocketFactory

创建一个Service

@Service
public class MailService {

    /**
     * 注入邮件工具类
     */
    @Autowired
    private JavaMailSenderImpl javaMailSender;

    @Value("${spring.mail.username}")
    private String sendMailer;

    /**
     * 发送纯文本/HTML格式邮件
     * @param to
     * @param subject
     * @param text
     */
    public void sendTextMailMessage(String to,String subject,String text){
        checkMail(to,subject,text);
        try {
            //true 代表支持复杂的类型
            MimeMessageHelper mimeMessageHelper = new MimeMessageHelper(javaMailSender.createMimeMessage(),true);
            //邮件发信人
            mimeMessageHelper.setFrom(sendMailer);
            //邮件收信人  1或多个
            mimeMessageHelper.setTo(to.split(","));
            //邮件主题
            mimeMessageHelper.setSubject(subject);
            //邮件内容：text后面可以添加true--(text,true)以便使用html格式
            mimeMessageHelper.setText(text);
            //邮件发送时间
            mimeMessageHelper.setSentDate(new Date());
            //发送邮件
            javaMailSender.send(mimeMessageHelper.getMimeMessage());
            System.out.println("发送邮件成功："+sendMailer+"->"+to);

        } catch (MessagingException e) {
            e.printStackTrace();
            System.out.println("发送邮件失败："+e.getMessage());
        }
    }

Controlle

/**
 * 发送邮件
 * @param to
 * @param subject
 * @param content
 */
@GetMapping("/sendMailMessage")
public void sendHtmlMailMessage(String to,String subject,String content){
    mailService.sendHtmlMailMessage(to,subject,content);
}