配置授权码

依赖 

<dependency><groupId>javax.mail</groupId><artifactId>javax.mail-api</artifactId><version>1.5.5</version>
</dependency>
<dependency><groupId>com.sun.mail</groupId><artifactId>javax.mail</artifactId><version>1.5.4</version>
</dependency>

工具类

package com.dduo.dduoj.utils;import java.util.*;
import javax.mail.*;
import javax.mail.internet.*;import com.sun.mail.util.MailSSLSocketFactory;/*** @author Dduo* @Title SendEmailService*/public class JavaMailUtils {// 仅供测试public static void main(String[] args) throws Exception {send_email("我是标题", "12345", "1507319255@qq.com");}/*** 传入的参数是 邮件地址 和 发送的内容 和 发送的标题** @param subject 标题* @param text 正文内容* @param mail 收件人地址* @throws Exception*/public static void send_email(String subject, String text, String mail) throws Exception {// 如果jdk版本太高 要加这个System.setProperty("java.net.preferIPv4Stack", "true");System.setProperty("https.protocols", "TLSv1.2");// 配置邮件发送的相关属性Properties props = new Properties();props.setProperty("mail.debug", "true");props.setProperty("mail.smtp.auth", "true");props.setProperty("mail.smtp.host", "smtp.qq.com");props.setProperty("mail.smtp.port", "465");props.setProperty("mail.transport.protocol", "smtp");props.setProperty("mail.smtp.ssl.enable", "true");// 设置SSL连接的工厂MailSSLSocketFactory msf = new MailSSLSocketFactory();msf.setTrustAllHosts(true);props.put("mail.smtp.ssl.socketFactory", msf);// 创建邮箱会话// todo 填写发发件人的QQ邮箱和授权码Session session = Session.getInstance(props, new javax.mail.Authenticator() {protected PasswordAuthentication getPasswordAuthentication() {return new PasswordAuthentication("1732446549@qq.com", "mxytgpalxokeedjd");}});// 创建邮件消息对象Message message = new MimeMessage(session);message.setSubject(subject);message.setText(text);message.setFrom(new InternetAddress("1732446549@qq.com"));// 处理收件人部分，单个收件人和多个收件人的处理方式message.setRecipient(Message.RecipientType.TO, new InternetAddress(mail));// 获取邮件传输对象Transport transport = session.getTransport();transport.connect();// 发送邮件transport.sendMessage(message, message.getAllRecipients());// 关闭连接transport.close();}}