Java邮件发送程序（可以同时发给多个地址、可以带附件）

package day2;

import java.util.Date;

import java.util.Properties;

import javax.activation.DataHandler;

import javax.activation.FileDataSource;

import javax.mail.Authenticator;

import javax.mail.Multipart;

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 org.apache.commons.lang3.StringUtils;

public class SendMailTest {

public static void main(String[] args) {

String title = "titleTest";// 所发送邮件的标题

String from = "servername@163.com";// 从那里发送

String sendTo[] = { "test@qq.com", "test@sina.com" };// 发送到那里

// 邮件的文本内容，可以包含html标记则显示为html页面

String content = "mail test!!!!!!<br><a href=#>aaa</a>";

// 所包含的附件，及附件的重新命名

String fileNames[] = { "E:\\1.txt,1.txt",

"E:\\2.txt,2.txt" };

try {

// MailSender mailsender = new MailSender();

sendmail(title,

from,

sendTo,

content,

fileNames,

"text/html;charset=gb2312"

);

} catch (Exception ex) {

ex.printStackTrace();

}

}

/**

*

* @param subject

* @param from 发件人的地址

* @param to 收件人的地址

* @param text

* @param filenames

* @param mimeType

*

* */

public static void sendmail(String subject, String from,

String[] to, String text, String[] filenames,

String mimeType) throws Exception {

// ResourceBundle mailProps = ResourceBundle.getBundle("mail");

// 可以从配置文件读取相应的参数

Properties props = new Properties();

String smtp = "smtp.163.com"; // 设置发送邮件所用到的smtp

String serverName = "serverName";

String serverPassword = "serverPassword";

Session mailSession; // 邮件会话对象

MimeMessage mimeMsg; // MIME邮件对象

props = System.getProperties(); // 获得系统属性对象

props.put("mail.smtp.host", smtp); // 设置SMTP主机

props.put("mail.smtp.auth", "true"); // 是否到服务器用户名和密码验证

// 到服务器验证发送的用户名和密码是否正确

EmailAutherticator myEmailAuther = new

EmailAutherticator(serverName, serverPassword);

// 根据属性新建一个邮件会话

mailSession = Session.getInstance(props,

(Authenticator) myEmailAuther

);

// 设置传输协议

Transport transport = mailSession.getTransport("smtp");

// 设置from、to等信息

mimeMsg = new MimeMessage(mailSession);

if (!StringUtils.isEmpty(from)) {

InternetAddress sentFrom = new InternetAddress(from);

mimeMsg.setFrom(sentFrom); // 设置发送人地址

}

InternetAddress[] sendTo = new InternetAddress[to.length];

for (int i = 0; i < to.length; i++) {

System.out.println("发送到:" + to[i]);

sendTo[i] = new InternetAddress(to[i]);

}

// 设置收件人,并设置其接收类型为TO

mimeMsg.setRecipients(MimeMessage.RecipientType.TO, sendTo);

// 设置标题

mimeMsg.setSubject(subject, "gb2312");

MimeBodyPart messageBodyPart1 = new MimeBodyPart();

// messageBodyPart.setText(UnicodeToChinese(text));

// 设置信件内容

messageBodyPart1.setContent(text, mimeType);

Multipart multipart = new MimeMultipart();// 附件传输格式

multipart.addBodyPart(messageBodyPart1);

for (int i = 0; i < filenames.length; i++) {

MimeBodyPart messageBodyPart2 = new MimeBodyPart();

// 选择出每一个附件名

String filename = filenames[i].split(",")[0];

System.out.println("附件名：" + filename);

String displayname = filenames[i].split(",")[1];

// 得到数据源

FileDataSource fds = new FileDataSource(filename);

// 得到附件本身并至入BodyPart

messageBodyPart2.setDataHandler(new DataHandler(fds));

// 得到文件名同样至入BodyPart

// messageBodyPart2.setFileName(displayname);

// messageBodyPart2.setFileName(fds.getName());

messageBodyPart2.setFileName(MimeUtility.encodeText(displayname));

multipart.addBodyPart(messageBodyPart2);

}

mimeMsg.setContent(multipart);

// 设置信件头的发送日期

mimeMsg.setSentDate(new Date());

// 存储邮件信息

mimeMsg.saveChanges();

// 发送邮件

//transport.send(mimeMsg);

transport.connect(serverName, serverPassword);

transport.sendMessage(mimeMsg,

mimeMsg.getAllRecipients()

);// 发送邮件,其中第二个参数是所有已设好的收件人地址

transport.close();

}

}

package day2;

import javax.mail.Authenticator;

import javax.mail.PasswordAuthentication;

public class EmailAutherticator extends Authenticator {

private String userName = null;

private String password = null;

public void setUserName(String userName) {

this.userName = userName;

}

public void setPassword(String password) {

this.password = password;

}

public EmailAutherticator(String userName, String password) {

super();

setUserName(userName);

setPassword(password);

}

public PasswordAuthentication getPasswordAuthentication() {

return new PasswordAuthentication(userName, password);

}

}