JavaMail realizes mail push function (Netease mailbox)

1. First, you need to go to NetEase to register an email, and click POP3/SMTP/IMAP as shown in the figure after login.

2. Open POP3, fill in the corresponding information, and copy the obtained authorization code

3. Create the Maven project yourself and import the dependencies of JavaMail

<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>1.5.0-b01</version>
</dependency>

4. The comment is in the code, which can be modified according to your own authorization code

package com.itboyst.facedemo.util;

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

public class SendMailByWY {
    
    

    public static void sendEmail(String to, String content) throws MessagingException {
    
    
        //1.创建连接对象
        Properties properties = new Properties();
        //1.2 设置发送邮件的服务器
        properties.put("mail.smtp.host","smtp.163.com");
        //1.3 需要经过授权,用户名和密码的校验(必须)
        properties.put("mail.smtp.auth",true);
        //1.4 默认以25端口发送
        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");
        //1.5 认证信息
        Session session = Session.getInstance(properties, new Authenticator() {
    
    
            @Override
            protected PasswordAuthentication getPasswordAuthentication() {
    
    
                return new PasswordAuthentication("你自己的网易邮箱@163.com" , "授权码");
            }
        });
        //2.创建邮件对象
        Message message = new MimeMessage(session);
        //2.1设置发件人
        message.setFrom(new InternetAddress("你自己的网易邮箱@163.com"));
        //2.2设置收件人
        message.setRecipient(Message.RecipientType.TO,new InternetAddress(to));
        //2.3设置抄送者(PS:没有这一条网易会认为这是一条垃圾短信，而发不出去)
        message.setRecipient(Message.RecipientType.CC,new InternetAddress("你自己的网易邮箱@163.com"));
        //2.4设置邮件的主题
        message.setSubject("主题");
        //2.5设置邮件的内容
        message.setContent(""+content+"","text/html;charset=utf-8");
        //3.发送邮件
        Transport.send(message);
    }
	
	//直接在main方法下测试
    public static void main(String[] args) throws MessagingException {
    
    
        sendEmail("[email protected]", "邮件内容");
    }

}

5. The effect is as shown below

6.Think

Using the email push function, we can directly encapsulate it into a tool class and transform it into the verification code function and user mail reminder function when logging in to the registration page, as well as some other functions