发送邮件的一种写法 (手动发送)

最新推荐文章于 2024-08-22 18:30:00 发布

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最新推荐文章于 2024-08-22 18:30:00 发布

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分类专栏： SSH (相当重要) 文章标签： string properties session null exception

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本文提供了一个使用Java发送带有HTML格式内容的电子邮件的示例代码。通过配置SMTP服务器及认证信息，实现从指定邮箱发送邮件到目标邮箱的功能。

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import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Arrays;
import java.util.Date;
import java.util.Properties;

import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeBodyPart;
import javax.mail.internet.MimeMessage;
import javax.mail.internet.MimeMultipart;

/**
*
* @author wgh
* 后台加盟Chitone>>应聘管理邮件回复
*
*/
public class ReplyEmail{

    private static String username = "chitone@job5156.com";
    private static String password = "wgh1***842****3";

    public static void main(String args[])throws Exception{

        Properties props = new Properties();
        props.put("mail.smtp.auth", "true");
        props.put("mail.smtp.host", "smtp.job5156.com");
        String from = "chitone@job5156.com";    //job@job5156.com
        String to = "w**huan@126.com";

        //获取邮件会话对象
        Session session = Session.getDefaultInstance(props,
                new SmtpAuthenticator(username,password));
        MimeMessage msg = new MimeMessage(session);
        msg.setFrom(new InternetAddress(from));                    //设置发信人
        msg.setRecipients(Message.RecipientType.TO,
                InternetAddress.parse(to));                        //设置收信人
        msg.setSentDate(new Date());
        msg.setSubject("感谢您申请 Chitone xx公司的销售代表职位");
        Multipart mp = new MimeMultipart("related");            //related 意味着可以发送html格式的邮件
        BodyPart bodyPart = new MimeBodyPart();                    //邮件正文
        bodyPart.setDataHandler(new DataHandler("~~~hello~~~","text/html;charset=GBK"));//网页格式
        mp.addBodyPart(bodyPart);
        msg.setContent(mp);
        Transport.send(msg);                                    //发送邮件

        //更改应聘者邮件回复状态
    }
}

    /**
    * Smtp 认证
    */
    class SmtpAuthenticator extends Authenticator{
        String username = null;
        String password = null;

        //SMTP身份验证
        public SmtpAuthenticator(String username,String password){
            this.username = username;
            this.password = password;
        }
        public PasswordAuthentication getPasswordAuthentication(){
            return new PasswordAuthentication(this.username,this.password);
        }
    }

    class ByteArrayDataSource implements DataSource{
        private final String contentType;
        private final byte[] buf;
        private final int len;

        public ByteArrayDataSource(byte[] buf,String contentType){
            this(buf,buf.length,contentType);
        }

        public ByteArrayDataSource(byte[] buf,int length,String contentType){
            this.buf = buf;
            this.len = length;
            this.contentType = contentType;
        }

        public String getContentType() {
            if (contentType == null)
                return "application/octet-stream";
            return contentType;
        }

        public InputStream getInputStream() {
            return new ByteArrayInputStream(buf, 0, len);
        }

        public String getName() {
            return null;
        }

        public OutputStream getOutputStream() {
            throw new UnsupportedOperationException();
        }
    }