java发送邮件包括解决附件中文名称过长乱码问题

package com.itsm.core.utils;

import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.*;

/**

• Created by jc on 2018/10/11.
  */
  public class MailUtil {
  //private String uploadPath;
  //发件人地址
  //public static String senderAddress = "[email protected]";
  //收件人地址
  // public static String recipientAddress = "[email protected]";
  //发件人账户名
  // public static String senderAccount = "[email protected]";
  //发件人账户密码
  // public static String senderPassword = “xxx”;
  public static void sendMail(String senderAccount,String senderPassword,String senderAddress,String recipientAddress,String smtpHost,String localFileAddress,String mailTile,String mailBody) {
  //1、连接邮件服务器的参数配置附件名称过长乱码解决，关键词false
  System.setProperty(“mail.mime.splitlongparameters”,“false”);
  Properties props = new Properties();
  //设置用户的认证方式
  props.setProperty(“mail.smtp.auth”, “true”);
  //设置传输协议
  props.setProperty(“mail.transport.protocol”, “smtp”);
  //设置发件人的SMTP服务器地址
  props.setProperty(“mail.smtp.host”, smtpHost);
  //2、创建定义整个应用程序所需的环境信息的 Session 对象
  Session session = Session.getInstance(props);
  //设置调试信息在控制台打印出来
  session.setDebug(true);
  //3、创建邮件的实例对象
  Message msg = null;
  try {
  msg = getMimeMessage(session,senderAddress, recipientAddress,localFileAddress,mailTile,mailBody);
  //4、根据session对象获取邮件传输对象Transport
  Transport transport = session.getTransport();
  //设置发件人的账户名和密码
  transport.connect(senderAccount, senderPassword);
  //发送邮件，并发送到所有收件人地址，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(msg,msg.getAllRecipients());
  transport.close();
  } catch (Exception e) {
  e.printStackTrace();
  }
  //如果只想发送给指定的人，可以如下写法
  //transport.sendMessage(msg, new Address[]{new InternetAddress("[email protected]")});
  //5、关闭邮件连接

  }

  /**

  • 获得创建一封邮件的实例对象

  • @param session

  • @return

  • @throws MessagingException

  • @throws AddressException
    /
    public static MimeMessage getMimeMessage(Session session,String senderAddress,String recipientAddress,String localFileAddress,String mailTile,String mailBody) throws Exception{
    //创建一封邮件的实例对象
    MimeMessage msg = new MimeMessage(session);
    //设置发件人地址
    msg.setFrom(new InternetAddress(senderAddress));
    /*

    • 设置收件人地址（可以增加多个收件人、抄送、密送），即下面这一行代码书写多行
    • MimeMessage.RecipientType.TO:发送
    • MimeMessage.RecipientType.CC：抄送
    • MimeMessage.RecipientType.BCC：密送
      */
      msg.setRecipient(MimeMessage.RecipientType.TO,new InternetAddress(recipientAddress));
      //设置邮件主题
      msg.setSubject(mailTile,“utf-8”);
      //msg.setContent(content, “text/html;charset=GB2312”);

    //设置邮件的发送时间,默认立即发送
    msg.setSentDate(new Date());
    MimeBodyPart text = new MimeBodyPart();
    //设置邮件正文
    text.setContent(mailBody, “text/html;charset=utf-8”);
    MimeBodyPart attachment = new MimeBodyPart();
    // 读取本地文件
    DataHandler dh2 = new DataHandler(new FileDataSource(localFileAddress));
    // 将附件数据添加到"节点"
    attachment.setDataHandler(dh2);
    // 设置附件的文件名（需要编码）
    String filename = dh2.getName();
    filename = MimeUtility.encodeText(filename);
    attachment.setFileName(filename.trim());
    MimeMultipart mm = new MimeMultipart();
    mm.addBodyPart(text);
    mm.addBodyPart(attachment); // 如果有多个附件，可以创建多个多次添加
    mm.setSubType(“mixed”); // 混合关系
    msg.setContent(mm);
    return msg;
    }

}