javamail邮件发送，带附件发送

package com.frame.mall.core.mail;

import java.util.Date;
import java.util.Enumeration;
import java.util.Properties;
import java.util.Vector;

import javax.activation.*;
import javax.mail.Authenticator;
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;
import javax.mail.internet.MimeUtility;

/**
* Created by wangyanlong on 2017/4/5.
*/

4000
public class MailUtils {

/**
* <p>
* Title: 使用javamail发送邮件
* </p>
*/

String to = "";         // 收件人
String from = "";       // 发件人
String host = "";       // smtp主机
String username = "";   //用户名
String password = "";   //密码
String filename = "";    // 附件文件名
String subject = "";     // 邮件主题
String content = "";     // 邮件正文
Vector file = new Vector();// 附件文件集合

/**
* <br>
* 方法说明：默认构造器 <br>
* 输入参数： <br>
* 返回类型：
*/
public MailUtils() {
}

/**
* <br>
* 方法说明：构造器，提供直接的参数传入 <br>
* 输入参数： <br>
* 返回类型：
*/
public MailUtils(String to, String from, String smtpServer,
String username, String password, String subject, String content) {
this.to = to;
this.from = from;
this.host = smtpServer;
this.username = username;
this.password = password;
this.subject = subject;
this.content = content;
}

/**
* <br>
* 方法说明：设置邮件服务器地址 <br>
* 输入参数：String host 邮件服务器地址名称 <br>
* 返回类型：
*/
public void setHost(String host) {
this.host = host;
}

/**
* <br>
* 方法说明：设置登录服务器校验密码 <br>
* 输入参数： <br>
* 返回类型：
*/
public void setPassWord(String pwd) {
this.password = pwd;
}

/**
* <br>
* 方法说明：设置登录服务器校验用户 <br>
* 输入参数： <br>
* 返回类型：
*/
public void setUserName(String usn) {
this.username = usn;
}

/**
* <br>
* 方法说明：设置邮件发送目的邮箱 <br>
* 输入参数： <br>
* 返回类型：
*/
public void setTo(String to) {
this.to = to;
}

/**
* <br>
* 方法说明：设置邮件发送源邮箱 <br>
* 输入参数： <br>
* 返回类型：
*/
public void setFrom(String from) {
this.from = from;
}

/**
* <br>
* 方法说明：设置邮件主题 <br>
* 输入参数： <br>
* 返回类型：
*/
public void setSubject(String subject) {
this.subject = subject;
}

/**
* <br>
* 方法说明：设置邮件内容 <br>
* 输入参数： <br>
* 返回类型：
*/
public void setContent(String content) {
this.content = content;
}

/**
* <br>
* 方法说明：把主题转换为中文 <br>
* 输入参数：String strText <br>
* 返回类型：
*/
public String transferChinese(String strText) {
try {
strText = MimeUtility.encodeText(new String(strText.getBytes(),
"UTF-8"), "UTF-8", "B");
} catch (Exception e) {
e.printStackTrace();
}
return strText;
}

/**
* <br>
* 方法说明：往附件组合中添加附件 <br>
* 输入参数： <br>
* 返回类型：
*/
public void attachfile(String fname) {
file.addElement(fname);
}

/**
* <br>
* 方法说明：发送邮件 <br>
* 输入参数： <br>
* 返回类型：boolean 成功为true，反之为false
*/
public boolean sendMail() {

// 构造mail session
Properties props = new Properties();
props.put("mail.smtp.host", host);
props.put("mail.smtp.auth", "true");
props.put("mail.smtp.port", "25");//465

Session session = Session.getDefaultInstance(props,
new Authenticator() {
public PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(username, password);
}
});
//Session session = Session.getDefaultInstance(props);
//      Session session = Session.getDefaultInstance(props, null);

try {
// 构造MimeMessage 并设定基本的值
MimeMessage msg = new MimeMessage(session);
//MimeMessage msg = new MimeMessage();
msg.setFrom(new InternetAddress(from));

//msg.addRecipients(Message.RecipientType.TO, address); //这个只能是给一个人发送email
msg.setRecipients(Message.RecipientType.BCC, InternetAddress.parse(to));
subject = transferChinese(subject);
msg.setSubject(subject);

// 构造Multipart
Multipart mp = new MimeMultipart();

// 向Multipart添加正文
MimeBodyPart mbpContent = new MimeBodyPart();
mbpContent.setContent(content, "text/html;charset=gb2312");

// 向MimeMessage添加（Multipart代表正文）
mp.addBodyPart(mbpContent);

// 向Multipart添加附件
Enumeration efile = file.elements();
while (efile.hasMoreElements()) {

MimeBodyPart mbpFile = new MimeBodyPart();
filename = efile.nextElement().toString();
FileDataSource fds = new FileDataSource(filename);
mbpFile.setDataHandler(new DataHandler(fds));
// <span style = "color: #ff0000;" >//这个方法可以解决附件乱码问题。</span>
String filename = new String(fds.getName().getBytes(), "ISO-8859-1");

mbpFile.setFileName(filename);
// 向MimeMessage添加（Multipart代表附件）
mp.addBodyPart(mbpFile);

}

file.removeAllElements();
// 向Multipart添加MimeMessage
msg.setContent(mp);
msg.setSentDate(new Date());
msg.saveChanges();
// 发送邮件

Transport transport = session.getTransport("smtp");
transport.connect(host, username, password);
transport.sendMessage(msg, msg.getAllRecipients());
transport.close();
} catch (Exception mex) {
mex.printStackTrace();
//          Exception ex = null;
//          if ((ex = mex.getNextException()) != null) {
//              ex.printStackTrace();
//          }
return false;
}
return true;
}

/**
* <br>
* 方法说明：主方法，用于测试 <br>
* 输入参数： <br>
* 返回类型：
*/
public static void main(String[] args) {
MailUtils sendmail = new MailUtils();

sendmail.setHost(" ");
sendmail.setUserName(" ");
sendmail.setPassWord("客户端授权的密码");
sendmail.setFrom(" ");
sendmail.setTo(" ");
sendmail.setSubject("  ");
sendmail.setContent("");
// Mail sendmail = new
// Mail("dujiang@sricnet.com","du_jiang@sohu.com","smtp.sohu.com","du_jiang","31415926","你好","胃，你好吗？");
sendmail.attachfile("d:\\adfdddd.zip");
sendmail.attachfile("d:\\adfafa.zip");

System.out.println(sendmail.sendMail());

}

}