Java实现带附件的邮件发送功能

package com.ecg.controller;  import java.io.UnsupportedEncodingException; import java.security.GeneralSecurityException; 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.MessagingException; 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; import javax.mail.internet.MimeUtility;  import com.sun.mail.util.MailSSLSocketFactory;  /**  * 邮件发送  *  * @author wanglongfei   * E-mail: islongfei@gmail.com  * @version 2017年8月27日  *  */ public class mailtest {    public static void main(String [] args) throws GeneralSecurityException, UnsupportedEncodingException  {   // 收件人电子邮箱   String to = "2528621082@qq.com";    // 发件人电子邮箱   String from = "1135237317@qq.com";    // 指定发送邮件的主机为 smtp.qq.com   String host = "smtp.qq.com"; //QQ 邮件服务器    // 获取系统属性   Properties properties = System.getProperties();    // 设置邮件服务器   properties.setProperty("mail.smtp.host", host);    properties.put("mail.smtp.auth", "true");   MailSSLSocketFactory sf = new MailSSLSocketFactory();   sf.setTrustAllHosts(true);   properties.put("mail.smtp.ssl.enable", "true");   properties.put("mail.smtp.ssl.socketFactory", sf);   // 获取默认session对象   Session session = Session.getDefaultInstance(properties,new Authenticator(){    public PasswordAuthentication getPasswordAuthentication()    {  //qq邮箱服务器账户、第三方登录授权码     return new PasswordAuthentication("1135237317@qq.com", "dgahhkkjrtgafejj"); //发件人邮件用户名、密码    }   });    try{    // 创建默认的 MimeMessage 对象    MimeMessage message = new MimeMessage(session);     // Set From: 头部头字段    message.setFrom(new InternetAddress(from));     // Set To: 头部头字段    message.addRecipient(Message.RecipientType.TO, new InternetAddress(to));     // Set Subject: 主题文字    message.setSubject("家医康心电诊断结果");      // 创建消息部分     BodyPart messageBodyPart = new MimeBodyPart();       // 消息     messageBodyPart.setText("233333333333333");      // 创建多重消息     Multipart multipart = new MimeMultipart();       // 设置文本消息部分     multipart.addBodyPart(messageBodyPart);       // 附件部分     messageBodyPart = new MimeBodyPart();     //设置要发送附件的文件路径     String filename = "C:/Users/下雨天-lalala/Desktop/家医康心电图/十二导联同步心电图-.png";     DataSource source = new FileDataSource(filename);     messageBodyPart.setDataHandler(new DataHandler(source));         //messageBodyPart.setFileName(filename);     //处理附件名称中文（附带文件路径）乱码问题     messageBodyPart.setFileName(MimeUtility.encodeText(filename));     multipart.addBodyPart(messageBodyPart);       // 发送完整消息     message.setContent(multipart );       // 发送消息     Transport.send(message);     System.out.println("Sent message successfully....");    }catch (MessagingException mex) {     mex.printStackTrace();    }  } }