java mail 带附件

package com.icss.study.sendemail;

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;
import java.io.FileInputStream;
import java.io.IOException;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Set;
import java.util.regex.Pattern;
/**
* Title: 使用javamail发送邮件
*/
public class MailUtils {
String to = "";// 收件人
String from = "";// 发件人
String host = "";// smtp主机
String username = "";
String password = "";
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

public MailUtils() {
}

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;
}

public void setHost(String host) {
this.host = host;
}

/**
* 方法说明：设置登录服务器校验密码 
* 输入参数： 
* 返回类型：
*/

public void setPassWord(String pwd) {
this.password = pwd;
}

/**
* 方法说明：设置登录服务器校验用户 
* 输入参数： 
* 返回类型：
*/

public void setUserName(String usn) {
this.username = usn;
}

/**
* 方法说明：设置邮件发送目的邮箱 
* 输入参数： 
* 返回类型：
*/

public void setTo(String to) {
this.to = to;
}

/**
* 方法说明：设置邮件发送源邮箱 
* 输入参数： 
* 返回类型：
*/

public void setFrom(String from) {
this.from = from;
}

/**
* 方法说明：设置邮件主题 
* 输入参数： 
* 返回类型：
*/

public void setSubject(String subject) {
this.subject = subject;
}

/**
* 方法说明：设置邮件内容 
* 输入参数： 
* 返回类型：
*/

public void setContent(String content) {
this.content = content;
}

/**
* 方法说明：把主题转换为中文 
* 输入参数：String strText 
* 返回类型：
*/

public String transferChinese(String strText) {
try {
strText = MimeUtility.encodeText(new String(strText.getBytes(),
"GB2312"), "GB2312", "B");
} catch (Exception e) {
e.printStackTrace();
}
return strText;
}

/**
* 方法说明：往附件组合中添加附件 
* 输入参数： 
* 返回类型：
*/
public void attachfile(String fname) {
file.addElement(fname);
}
/**
* 方法说明：发送邮件 
* 输入参数： 
* 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");
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 {
MimeMessage msg = new MimeMessage(session); // 构造MimeMessage 并设定基本的值
// 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);
Multipart mp = new MimeMultipart();// 构造Multipart
MimeBodyPart mbpContent = new MimeBodyPart();// 向Multipart添加正文
mbpContent.setContent(content, "text/html;charset=gb2312");
mp.addBodyPart(mbpContent);// 向MimeMessage添加（Multipart代表正文）

Enumeration efile = file.elements();// 向Multipart添加附件
while (efile.hasMoreElements()) {
MimeBodyPart mbpFile = new MimeBodyPart();
filename = efile.nextElement().toString();
FileDataSource fds = new FileDataSource(filename);
mbpFile.setDataHandler(new DataHandler(fds));
mbpFile.setFileName(fds.getName());
// 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;
}

/**
* 方法说明：主方法，用于测试 
* 输入参数： 
* 返回类型：
*/
public static void main(String[] args) {
MailUtils sendmail = new MailUtils();
sendmail.setHost("smtp.sohu.com");
sendmail.setUserName("fqdandy@sohu.com");
sendmail.setPassWord("password");
sendmail
.setTo("jindan_li@163.com");
sendmail.setFrom("fqdandy@sohu.com ");
sendmail.setSubject("你好，这是测试！");
sendmail.setContent("你好这是一个带多附件的测试！");
// 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:\\1.rar");
// sendmail.attachfile("d:\\2.rar");
System.out.println(sendmail.sendMail());
}
}