Java实现发送邮件并携带附件

< dependency >

     < groupId >javax.mail</ groupId >

     < artifactId >mail</ artifactId >

     < version >1.5.0-b01</ version >

</ dependency >

import lombok.extern.slf4j.Slf4j;

import javax.activation.DataHandler;

import javax.activation.FileDataSource;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.*;

import java.util.Date;

import java.util.Properties;

@Slf4j

public class EmailUtils {

     public static final String SenderEmail = "xxxxx@qq测试数据" ; //发送人邮箱

     public static final String senderCode = "ixxxxxxxxxxxdcd" ; //发送人邮箱授权码

     public static final String emailSMTPHost = "smtp.qq测试数据" ; //服务器地址

     public static final String receiveMailAccount = "xxxxx@qq测试数据" ; //收件人邮箱

     public static final String ccMailAccount = "xxxxx@163测试数据" ; //抄送人邮箱

     public static final String bccmailAccount = "xxxxxx@qq测试数据" ; //密送人邮箱

     /*发送邮件*/

     public static void sendMail() {

         try {

             Properties props = new Properties();

             props.setProperty( "mail.transport.protocol" , "smtp" ); // 使用的协议

             props.setProperty( "mail.smtp.host" , emailSMTPHost); // 发件人的邮箱的SMTP服务器地址

             props.setProperty( "mail.smtp.auth" , "true" ); // 需要请求认证

             Session session = Session.getInstance(props); //得到会话对象实例

             session.setDebug( false ); //是否打印详细日志

             MimeMessage message = createMimeMessage(session); //获取邮件对象（封装了一个方法）

             Transport transport = session.getTransport();

             transport.connect(SenderEmail, senderCode); //连接发送人的邮箱账户

             // 6. 发送邮件, 发到所有的收件地址, message.getAllRecipients() 获取到的是在创建邮件对象时添加的所有收件人, 抄送人, 密送人

             transport.sendMessage(message, message.getAllRecipients());

             // 7. 关闭连接

             transport.close();

             log.info( "邮件发送成功" );

         } catch (Exception e) {

             log.error( "发送邮件失败" );

         }

     }

     public static MimeMessage createMimeMessage(Session session) throws Exception {

         // 1. 创建一封邮件

         MimeMessage message = new MimeMessage(session);

         // 2. From: 发件人

         message.setFrom( new InternetAddress(SenderEmail, "发件人" , "UTF-8" ));

         // 3. 设置收件人、抄送人、密送人

         //MimeMessage.RecipientType.TO：收件类型；MimeMessage.RecipientType.CC：抄送类型；MimeMessage.RecipientType.BCC：密送类型

         message.setRecipient(MimeMessage.RecipientType.TO, new InternetAddress(receiveMailAccount, "收件人" , "UTF-8" ));

         message.setRecipient(MimeMessage.RecipientType.CC, new InternetAddress(ccMailAccount, "抄送人" , "UTF-8" ));

         message.setRecipient(MimeMessage.RecipientType.BCC, new InternetAddress(bccmailAccount, "密送人" , "UTF-8" ));

         // 4. Subject: 邮件主题

         message.setSubject( "这是邮件的主题" , "UTF-8" );

         // 5. Content: 邮件正文（可以使用html标签）

         message.setContent( "这是邮件正文" , "text/html;charset=UTF-8" );

*****************以下部分为携带附件代码，不需要携带附件的可删除星号圈起的部分*************************

         MimeMultipart multipart = new MimeMultipart();

         MimeBodyPart file1 = new MimeBodyPart();

         DataHandler handler = new DataHandler( new FileDataSource( "文件路径" ));

         file1.setDataHandler(handler);

         //对文件名进行编码，防止出现乱码

         String fileName = MimeUtility.encodeWord( "文件名" , "utf-8" , "B" );

         file1.setFileName(fileName);

         multipart.addBodyPart(file1);

         message.setContent(multipart);

*******************************************************************************************

         // 6. 设置发件时间

         message.setSentDate( new Date());

         // 7. 保存设置

         message.saveChanges();

         return message;

     }

}