邮箱发送信息需要用到邮箱授权码
获取qq邮箱授权码方式：
邮箱——>设置——>账户——>往下拖到POP3/IMAP/SMTP/Exchange/CardDAV/CalDAV服务——>获取授权码
引入依赖
org.apache.commons commons-email1.5
工具类：（测试过两种方式都可以，随意哪种）
package com.kgc.ymw.util;import java.security.GeneralSecurityException;import java.util.Properties;import java.util.Random;import javax.mail.Authenticator;import javax.mail.Message;import javax.mail.MessagingException;import javax.mail.PasswordAuthentication;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;import com.sun.mail.util.MailSSLSocketFactory;import org.apache.commons.mail.EmailException;import org.apache.commons.mail.HtmlEmail;import org.junit.jupiter.api.Test;@SuppressWarnings({"all"})public class EmailTest { private static String yzm; @Test public void send1() { String email = "xxxxxx@qq.com";//接收人邮箱 //HtmlEmail方式 sendEmail(email); } @Test public void send2() {// yzm = random1(); try { //javax.mail方式（发送方的邮箱，qq邮箱中申请的16位授权码，接收人邮箱，邮件标题，邮件内容） sendMail("xxxx@qq.com", "授权码", "xxxxxx@qq.com", "名称", "邀请您注册验证码：" + yzm + "
"); } catch (MessagingException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (GeneralSecurityException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static String sendEmail(String email) { HtmlEmail send = new HtmlEmail();//创建一个HtmlEmail实例对象 // 获取随机验证码 yzm = random1(); String resultCode = yzm; try { send.setHostName("smtp.qq.com"); send.setAuthentication("xxxxx@qq.com", "邮箱授权码"); //第一个参数是发送者的QQEamil邮箱 第二个参数是刚刚获取的授权码 send.setFrom("xxxxxx@qq.com", "名称");//发送人的邮箱为自己的，用户名可以随便填 记得是自己的邮箱不是qq// send.setSmtpPort(465); //端口号 可以不开 send.setSSLOnConnect(true); //开启SSL加密 send.setCharset("utf-8"); send.addTo(email); //设置收件人 email为你要发送给谁的邮箱账户 send.setSubject("标题"); //邮箱标题 send.setMsg("您的验证码为: " + resultCode + " ，五分钟后失效"); //Eamil发送的内容 send.send(); //发送 } catch (EmailException e) { e.printStackTrace(); } return yzm; } public static String sendMail(String sender, String auth, String to, String title, String content) throws MessagingException, GeneralSecurityException, javax.mail.MessagingException { yzm = random1(); //创建一个配置文件并保存 Properties properties = new Properties(); properties.setProperty("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory"); properties.setProperty("mail.smtp.socketFactory.fallback", "false"); properties.setProperty("mail.smtp.port", "465"); properties.setProperty("mail.smtp.socketFactory.port", "465"); properties.setProperty("mail.host", "smtp.qq.com"); properties.setProperty("mail.transport.protocol", "smtp"); properties.setProperty("mail.smtp.auth", "true"); //QQ存在一个特性设置SSL加密 MailSSLSocketFactory sf = new MailSSLSocketFactory(); sf.setTrustAllHosts(true); properties.put("mail.smtp.ssl.enable", "true"); properties.put("mail.smtp.ssl.socketFactory", sf); //创建一个session对象 Session session = Session.getDefaultInstance(properties, new Authenticator() { @Override protected PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(sender, auth); } }); //开启debug模式 session.setDebug(true); //获取连接对象 Transport transport = session.getTransport(); //连接服务器 transport.connect("smtp.qq.com", sender, auth); //创建邮件对象 MimeMessage mimeMessage = new MimeMessage(session); //邮件发送人 mimeMessage.setFrom(new InternetAddress(sender)); //邮件接收人 mimeMessage.setRecipient(Message.RecipientType.TO, new InternetAddress(to)); //邮件标题 mimeMessage.setSubject(title); //邮件内容 mimeMessage.setContent(content, "text/html;charset=UTF-8"); //发送邮件 transport.sendMessage(mimeMessage, mimeMessage.getAllRecipients()); //关闭连接 transport.close(); return yzm; } //生成6位数 验证码 public static String random1() { String code = ""; Random rd = new Random(); for (int i = 0; i < 6; i++) { int r = rd.nextInt(10); //每次随机出一个数字（0-9） code = code + r; //把每次随机出的数字拼在一起 } System.out.println(code); return code; }}
