Java发送邮件

最新推荐文章于 2025-09-12 18:08:49 发布

转载最新推荐文章于 2025-09-12 18:08:49 发布 · 73 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/bigorang/p/10406057.html

文章标签：

#java

所需资源
1. JavaMail API jar包
2. mail.properties
  文件：


import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.Properties;

import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.Message.RecipientType;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;

public class MailUtils {
    private static Session session = null;

    private static String myEmailAccount;
    private static String myEmailPassword;
    private static String myEmailSMTPHost;

    private MailUtils(){
        
    }
    
    private static Session getSession() throws IOException {
        if (session == null) {
            // 读取配置信息
            Properties prop = new Properties();
            InputStream ins = new BufferedInputStream(new FileInputStream("src/mail.properties"));
            // InputStream ins =
            // this.getClass().getResourceAsStream("/mail.properties");
            prop.load(ins);
            myEmailAccount = prop.getProperty("myEmailAccount");
            myEmailPassword = prop.getProperty("myEmailPassword");
            myEmailSMTPHost = prop.getProperty("myEmailSMTPHost");

            // 1.创建连接对象，连接到邮件服务器
            Properties props = new Properties();
            // props.setProperty("host", value);
            props.setProperty("mail.transport.protocol", "smtp");
            props.setProperty("mail.smtp.host", myEmailSMTPHost);
            props.setProperty("mail.smtp.auth", "true");

            session = Session.getInstance(props, new Authenticator() {
                @Override
                protected PasswordAuthentication getPasswordAuthentication() {
                    // 发送帐号
                    return new PasswordAuthentication(myEmailAccount, myEmailPassword);
                }
            });
        }
        return session;
    }

    /**
     * 根据配置文件发送邮件的方法
     * 
     * @param toAddress
     *            :收件人地址
     * @param code
     *            :激活码
     * @throws IOException
     * @throws MessagingException
     * @throws AddressException
     * @throws Exception
     */
    public static void sendMailByNet2(String toAddress, String subject, String content)
            throws IOException, AddressException, MessagingException {
        Session session = getSession();
        session.setDebug(true);

        // 2.创建邮件对象
        Message message = new MimeMessage(session);

        // 2.1设置发件人
        message.setFrom(new InternetAddress(myEmailAccount));
        // 2.2设置收件人
        message.setRecipient(RecipientType.TO, new InternetAddress(toAddress));
        // 2.3设置邮件主题
        message.setSubject(subject);
        // 2.4设置邮件的正文
        message.setContent(content, "text/html;charset=UTF-8");
        message.setSentDate(new Date());
        message.saveChanges();

        // 3.发送激活邮件
         Transport.send(message);

        /*Transport transport = session.getTransport();
        transport.connect(myEmailAccount, myEmailPassword);
        transport.sendMessage(message, message.getAllRecipients());
        transport.close();
*/
    }

    public static void main(String[] args) {
        long startTime = System.currentTimeMillis();

        try {
            sendMailByNet2("bigzxxxx@qq.com", "测试邮件1", "Hello");
        } catch (AddressException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (MessagingException e) {
            e.printStackTrace();
        }
        long endTime = System.currentTimeMillis();

        System.out.println(endTime - startTime + "ms");
    }
}

#mail.properties
mail.transport.protocol=smtp
myEmailSMTPHost=smtp.163.com
myEmailAccount=xxxx@163.com
myEmailPassword=xxx
#password可能不是网页邮箱的登录密码，注意查看，一般QQ需要设置第三方的授权登录密码，此处填写第三方的授权登录密码

转载于:https://www.cnblogs.com/bigorang/p/10406057.html