Java使用JavaMail API实现原生邮箱发送功能的方法

<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>1.4.7</version>
</dependency>

package com.dtstack.knowledge.ai.server.util;

import com.sun.mail.util.MailSSLSocketFactory;

import javax.mail.*;
import javax.mail.Message;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;

/**
 * @ClassName MailUtil
 * @Author ChangLu
 * @Date 2022/1/25 18:28
 * @Description TODO
 */
public class MailUtil {

    public static void main(String[] args) throws Exception {
        sendQQMail("939974883@qq.com", "changlu@dtstack.com", "sdfdsfdsdfds");
    }

    private static SimpleDateFormat DATE_FORMAT_TOOL = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    /**
     * 向指定qq发送邮件
     * @param FROM 发送者qq
     * @param to 接受者qq
     * @param code 发送者qq的授权码(需要去qq邮箱进行授权)
     * @throws Exception
     */
    public static void sendQQMail(String FROM, String TO, String code) throws Exception {
        Properties props = new Properties();

        // 开启debug调试
        props.setProperty("mail.debug", "true");
        // 发送服务器需要身份验证
        props.setProperty("mail.smtp.auth", "true");
        // 设置邮件服务器主机名
        props.setProperty("mail.host", "smtp.qq.com");
        // 发送邮件协议名称
        props.setProperty("mail.transport.protocol", "smtp");

        // 针对 JDK 17 的 SSL 协议配置
        props.setProperty("mail.smtp.ssl.protocols", "TLSv1.2");

        //开启SSL加密
        MailSSLSocketFactory sf = new MailSSLSocketFactory();
        sf.setTrustAllHosts(true);
        props.put("mail.smtp.ssl.enable", "true");
        props.put("mail.smtp.ssl.socketFactory", sf);

        Session session = Session.getInstance(props);

        //消息对象配置信息
        Message msg = new MimeMessage(session);
        //设置标题名称
        msg.setSubject("测试");
        StringBuilder builder = new StringBuilder();
        builder.append("\n " + "<h1>欢迎你加入智蜂工作室!</h1>");
        builder.append("\n时间 " + DATE_FORMAT_TOOL.format(new Date()));
        //设置短信内容(setContent可以设置发送内容的类型格式)
        msg.setContent(builder.toString(), "text/html;charset=UTF-8");
        msg.setFrom(new InternetAddress(FROM));//发送人的邮箱地址

        //进行连接
        Transport transport = session.getTransport();
        transport.connect("smtp.qq.com", FROM, code);
        transport.sendMessage(msg, new Address[] { new InternetAddress(TO) });//接收人的邮箱地址
        transport.close();
    }


}

// 针对 JDK 17 的 SSL 协议配置
props.setProperty("mail.smtp.ssl.protocols", "TLSv1.2");