Java-工具类-发送邮件实例

java发送邮件实例

1、选择一个邮箱开通smtp服务

2、代码

依赖pom

<dependency>
    <groupId>javax.mail</groupId>
    <artifactId>mail</artifactId>
    <version>1.4.4</version>
</dependency>

java代码

package fltest;

import utils.ConfigProperty;
import javax.mail.Message;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;

public class SendMessage {

    public static String address = "[e-mail]";
    public static String password = "DPTYFYZNYUXNKXRS";// 邮箱授权码
    public static String host = "smtp.163.com";
    public static String port = "25";
    public static String auth = "true";
    public static String starttls = "true";
    public static String name = "独孤飞磊";
    public static String transType = "smtp";

    public static boolean sendMail(String subject, String context, String[] recipientArr) {
        boolean flag = true;

        // 建立邮件会话
        Properties pro = new Properties();
        pro.setProperty("mail.smtp.from", address);
        pro.setProperty("mail.smtp.password", password);
        pro.setProperty("mail.smtp.host", host);
        pro.setProperty("mail.smtp.port", port);
        pro.setProperty("mail.smtp.auth", auth);
        pro.setProperty("mail.smtp.starttls.enable", starttls);

        Session s = Session.getInstance(pro); // 根据属性新建一个邮件会话
        s.setDebug(true);
        MimeMessage message = new MimeMessage(s);// 由邮件会话新建一个消息对象
        try {
            // 设置邮件
            InternetAddress fromAddr = null;
            InternetAddress[] toAddr = new InternetAddress[recipientArr.length];
            for (int i = 0; i < recipientArr.length; i++) {
                toAddr[i] = new InternetAddress(recipientArr[i]);
            }
            String nick = javax.mail.internet.MimeUtility.encodeText(name);
            fromAddr = new InternetAddress(nick); // 邮件显示地址
            message.setFrom(fromAddr); // 设置发送地址
            message.setRecipients(Message.RecipientType.TO, toAddr); // 设置接收地址
            SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式
            message.setSubject(subject + "[" + df.format(new Date()) + "]"); // 设置邮件标题
            message.setText(context); // 设置邮件正文
            message.setSentDate(new Date()); // 设置邮件日期
            message.saveChanges(); // 保存邮件更改信息
            String mailSendEnable = ConfigProperty.getMail_send_enable();
            if (mailSendEnable.equals("1")) {//开启发送功能
                Transport transport = s.getTransport(transType);
                transport.connect(host, address, password); // 服务器地址，邮箱账号，邮箱密码
                transport.sendMessage(message, message.getAllRecipients()); // 发送邮件
                transport.close();// 关闭
                System.out.println("邮件发送成功");
            } else {
                System.out.println("邮件发送功能已经关闭");
            }
        } catch (Exception e) {
            e.printStackTrace();
            flag = false;// 发送失败
        }
        return flag;
    }
    public static void main(String[] args) {
        SendMessage.sendMail("【系统提示】发送邮件成功通知", "测试内容", new String[]{"[e-mail]"});
    }
}