java发送邮件带附件

package com.smtp;

import java.util.Vector;

public class MailBean {
private String to; // 收件人
private String from; // 发件人
private String host; // SMTP主机
private String username; // 发件人的用户名
private String password; // 发件人的密码
private String subject; // 邮件主题
private String content; // 邮件正文
Vector<String> file; // 多个附件
private String filename; // 附件的文件名

public String getTo() {
return to;
}

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

public String getFrom() {
return from;
}

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

public String getHost() {
return host;
}

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

public String getUsername() {
return username;
}

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

public String getPassword() {
return password;
}

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

public String getSubject() {
return subject;
}

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

public String getContent() {
return content;
}

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

public String getFilename() {
return filename;
}

public void setFilename(String filename) {
this.filename = filename;
}

public Vector<String> getFile() {
return file;
}

public void attachFile(String fileName) {
if (file == null){
file = new Vector<String>();
}
file.addElement(fileName);
}
}

package com.smtp;

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

import javax.activation.DataHandler;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
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;

public class SendMail {

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

public boolean sendMail(MailBean mb) {
String host = mb.getHost();
final String username = mb.getUsername();
final String password = mb.getPassword();
String from = mb.getFrom();
String to = mb.getTo();
String subject = mb.getSubject();
String content = mb.getContent();
String fileName = mb.getFilename();
Vector<String> file = mb.getFile();

Properties props = System.getProperties();
props.put("mail.smtp.host", host); // 设置SMTP的主机
props.put("mail.smtp.auth", "true"); // 需要经过验证

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

try {
MimeMessage msg = new MimeMessage(session);
msg.setFrom(new InternetAddress(from));
InternetAddress[] address = { new InternetAddress(to) };
msg.setRecipients(Message.RecipientType.TO, address);
msg.setSubject(toChinese(subject));

Multipart mp = new MimeMultipart();
MimeBodyPart mbpContent = new MimeBodyPart();
mbpContent.setText(content);
mp.addBodyPart(mbpContent);

/* 往邮件中添加附件 */
if (file != null) {
Enumeration<String> efile = file.elements();
while (efile.hasMoreElements()) {
MimeBodyPart mbpFile = new MimeBodyPart();
fileName = efile.nextElement().toString();
FileDataSource fds = new FileDataSource(fileName);
mbpFile.setDataHandler(new DataHandler(fds));
mbpFile.setFileName(toChinese(fds.getName()));
mp.addBodyPart(mbpFile);
}
System.out.println("添加成功");
}

msg.setContent(mp);
msg.setSentDate(new Date());
Transport.send(msg);

} catch (MessagingException me) {
me.printStackTrace();
return false;
}
return true;
}

}

package com.smtp;

public class TestJavaMail {

public static void main(String[] args) {

MailBean mb = new MailBean();
mb.setHost("smtp.126.com"); // 设置SMTP主机(163)，若用126，则设为：smtp.126.com
mb.setUsername("邮箱地址"); // 设置发件人邮箱的用户名
mb.setPassword("邮箱密码"); // 设置发件人邮箱的密码，需将*号改成正确的密码
mb.setFrom("设置发件人的邮箱"); // 设置发件人的邮箱
mb.setTo("设置收件人的邮箱"); // 设置收件人的邮箱
mb.setSubject("测试_JavaMail"); // 设置邮件的主题
mb.setContent("本邮件中包含三个附件，请检查！"); // 设置邮件的正文

mb.attachFile("往邮件中添加附件"); // 往邮件中添加附件
mb.attachFile("往邮件中添加附件");
mb.attachFile("往邮件中添加附件");

SendMail sm = new SendMail();
System.out.println("正在发送邮件...");
// 发送邮件
if (sm.sendMail(mb)){
System.out.println("发送成功!");
}else{
System.out.println("发送失败!");
}
}
}