方案实现

1、引用依赖

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

2、代码实现

此处以从**QQ邮箱**发送为例

public void send() throws MessagingException {
        JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();
        javaMailSender.setHost("smtp.qq.com");//发邮件主机地址
        javaMailSender.setPort(587);//发邮件端口
        javaMailSender.setUsername("314850828@qq.com");//发件人用户名。基本与发件人邮箱地址相同
        javaMailSender.setPassword("gbpzwiprmqcbcace"); //授权码。这个不是你的QQ密码
        javaMailSender.setDefaultEncoding("UTF-8");
        MimeMessage mimeMessage = javaMailSender.createMimeMessage();
        MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true);
        helper.setSubject("Test Subject");
        helper.setFrom("314850828@qq.com"); //发件人邮箱地址
        helper.setTo("test@sina.com");
        helper.setSentDate(new Date());
        helper.setText("test la la la ", true);
        javaMailSender.send(mimeMessage);
    }