基于Java怎么实现简单的邮件群发功能

今天小编给大家分享一下基于Java怎么实现简单的邮件群发功能的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。

pom文件引入第三方依赖

                                        javax.mail                        mail                        1.4                                                                        org.projectlombok                        lombok                        true                

java代码如下

 import lombok.Data; import javax.mail.Message.RecipientType;import javax.mail.MessagingException;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;import java.io.IOException;import java.io.InputStream;import java.util.ArrayList;import java.util.List;import java.util.Properties; /** * Created by tarzan liu on 2021/5/9. */public abstract class EmailUtil {     private static final Session session;     private static final EmailAuthenticator authenticator;     static {        InputStream inputStream = null;        try {            inputStream = EmailUtil.class.getResourceAsStream("/email.properties");            Properties properties = new Properties();            properties.load(inputStream);             authenticator = new EmailAuthenticator();            String username = properties.getProperty("email.username");            authenticator.setUsername(username);             String password = properties.getProperty("email.password");            authenticator.setPassword(password);             String smtpHostName = "smtp." + username.split("@")[1];            properties.put("mail.smtp.auth", "true");            properties.put("mail.smtp.host", smtpHostName);             session = Session.getInstance(properties, authenticator);        } catch (Exception e) {            throw new RuntimeException("init error.");        } finally {            if (inputStream != null) {                try {                    inputStream.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }    }     private EmailUtil() { }     /**     * 群发邮件方法     */    private static void massSend(List recipients, SimpleEmail email) throws MessagingException {        MimeMessage message = new MimeMessage(session);        message.setFrom(new InternetAddress(authenticator.getUsername()));        InternetAddress[] addresses = new InternetAddress[recipients.size()];        for (int index = 0; index < recipients.size(); index ++) {            addresses[index] = new InternetAddress(recipients.get(index));        }        message.setRecipients(RecipientType.TO, addresses);        message.setSubject(email.getSubject());        message.setContent(email.getContent(), "text/html;charset=utf-8");         Transport.send(message);    }     /**     * 发送邮件     */    public static void send(String recipient, SimpleEmail email) throws MessagingException {        List recipients = new ArrayList<>();        recipients.add(recipient);        massSend(recipients, email);    }      //可以单独建一个类    @Data    public static class SimpleEmail {        private String subject;        private String content;    }      public static void main(String[] args) throws Exception {        SimpleEmail simpleEmail = new SimpleEmail();        simpleEmail.setSubject("今天你学习了么？");        simpleEmail.setContent("今天你写博客了么");        send("1334512682@qq.com", simpleEmail);    }}

email.properties 系统邮箱配置

email.username=###@163.com
email.password=###

你的邮箱账号和密码，也可以省去配置文件，直接把账号密码写死在代码。

运行测试

右键run 运行主方法。

将发送的邮箱绑定到微信上，还能实现微信提醒功能！

以上就是"基于Java怎么实现简单的邮件群发功能"这篇文章的所有内容，感谢各位的阅读！相信大家阅读完这篇文章都有很大的收获，小编每天都会为大家更新不同的知识，如果还想学习更多的知识，请关注行业资讯频道。