邮件发送

发送邮件:SMTP协议

接收邮件:POP3协议

需要JavaMail API 和 Java Activation Framework

jar包:mail.jar和activation.jar

普通java程序

package com.yu;

import com.sun.mail.util.MailSSLSocketFactory;

import javax.mail.*;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.util.Properties;

//发送一封简单的邮件
public class MailDemo01 {
    public static void main(String[] args) throws Exception {
        Properties prop = new Properties();
        prop.setProperty("mail.host","smtp.qq.com");//设置qq邮件服务器
        prop.setProperty("mail.transport.protocol","smtp");//邮件发送协议
        prop.setProperty("mail.smtp.auth","true");//需要验证用户名密码

        //qq邮箱设置ssl加密,其他邮箱不需要
        MailSSLSocketFactory sf = new MailSSLSocketFactory();
        sf.setTrustAllHosts(true);
        prop.put("mail.smtp.ssl.enable","true");
        prop.put("mail.smtp.ssl.socketFactory",sf);

        //1.创建定义整个应用所需的环境信息的Session对象  qq才有其他没有
        Session session = Session.getDefaultInstance(prop, new Authenticator() {
            public PasswordAuthentication getPasswordAuthentication(){
                //发件人用户名、授权码
                return new PasswordAuthentication("发件人邮箱","授权码");
            }
        });
        //开启session的debug模式查看运行状态
        session.setDebug(true);
        //2.通过session得到transport对象
        Transport ts = session.getTransport();
        //3.使用邮箱的用户名和授权码连上邮件服务器
        ts.connect("smtp.qq.com","发件人邮箱","授权码");
        //4.创建邮件
        MimeMessage message = new MimeMessage(session);
        //邮件发件人
        message.setFrom(new InternetAddress("发件人邮箱"));
        //邮件收件人
        message.setRecipient(Message.RecipientType.TO,new InternetAddress("收件人邮箱"));
        //邮件标题
        message.setSubject("测试");
        //邮件的文本内容
        message.setContent("test","text/html;charset=utf-8");
        //5.发送邮件
        ts.sendMessage(message,message.getAllRecipients());
        //6.关闭连接
        ts.close();
    }
}

java邮件

原文：https://www.cnblogs.com/w00dyblog/p/12618600.html