java实现发送电子邮件功能

在开发中经常要给用户自动的发送电子邮件，今天在网上搜了一个发送电子邮件的java程序，写的不错，条理也比较清楚，而且注释比较多，发到我的博客，希望能对大家有帮助，已经调试通过，不过要下一个mail.jar和activation.jar当然要有j2ee.jar 了,别的不多说了，感谢源程序的创作者

package mail;

import java.io.File;

import java.io.UnsupportedEncodingException;

import java.net.MalformedURLException;

import java.net.URL;

import java.util.ArrayList;

import java.util.Date;

import java.util.Properties;

import javax.activation.DataHandler;

import javax.activation.FileDataSource;

import javax.mail.Address;

import javax.mail.MessagingException;

import javax.mail.Session;

import javax.mail.Transport;

import javax.mail.internet.AddressException;

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 Mail {

/** 发件方式 - 普通发送 */

final public static int TO = 0;

/** 发件方式 - 抄送 */

final public static int CC = 1;

/** 发件方式 - 密件抄送 */

final public static int BCC = 2;

/** 邮件相关信息 - SMTP 服务器 */

private String mailSMTPHost = null;

/** 邮件相关信息 - 邮件用户名 */

private String mailUser = null;

/** 邮件相关信息 - 密码 */

private String mailPassword = null;

/** 邮件相关信息 - 发件人邮件地址 */

private String mailFromAddress = null;

/** 邮件相关信息 - 邮件主题 */

private String mailSubject = "";

/** 邮件相关信息 - 邮件发送地址 */

private Address[] mailTOAddress = null;

/** 邮件相关信息 - 邮件抄送地址 */

private Address[] mailCCAddress = null;

/** 邮件相关信息 - 邮件密件抄送地址 */

private Address[] mailBCCAddress = null;

/** 邮件相关信息 - 邮件正文(复合结构) */

private MimeMultipart mailBody = null;

public Mail() {

mailBody = new MimeMultipart();

}

/**

* 设置 SMTP 服务器

* @param strSMTPHost 邮件服务器名称或 IP

* @param strUser 邮件用户名

* @param strPassword 密码

*/

public void setSMTPHost(String strSMTPHost, String strUser,

String strPassword) {

this.mailSMTPHost = strSMTPHost;

this.mailUser = strUser;

this.mailPassword = strPassword;

}

/**

* 设置邮件发送地址

* @param strFromAddress 邮件发送地址

*/

public void setFromAddress(String strFromAddress) {

this.mailFromAddress = strFromAddress;

}

/**

* 设置邮件目的地址

* @param strAddress 邮件目的地址列表, 不同的地址可用;号分隔

* @param iAddressType 邮件发送方式 (TO 0, CC 1, BCC 2) 常量已在本类定义

* @throws AddressException

*/

public void setAddress(String strAddress, int iAddressType) throws

AddressException {

switch (iAddressType) {

case Mail.TO: {

ArrayList alAddress = StringHelper.split(strAddress, ';');

mailTOAddress = new Address[alAddress.size()];

for (int i = 0; i < alAddress.size(); i++) {

mailTOAddress[i] = new InternetAddress( (String) alAddress.get(i));

}

break;

}

case Mail.CC: {

ArrayList alAddress = StringHelper.split(strAddress, ';');

mailCCAddress = new Address[alAddress.size()];

for (int i = 0; i < alAddress.size(); i++) {

mailCCAddress[i] = new InternetAddress( (String) alAddress.get(i));

}

break;

}

case Mail.BCC: {

ArrayList alAddress = StringHelper.split(strAddress, ';');

mailBCCAddress = new Address[alAddress.size()];

for (int i = 0; i < alAddress.size(); i++) {

mailBCCAddress[i] = new InternetAddress( (String) alAddress.get(i));

}

break;

}

}

}

/**

* 设置邮件主题

* @param strSubject 邮件主题

*/

public void setSubject(String strSubject) {

this.mailSubject = strSubject;

}

/**

* 设置邮件文本正文

* @param strTextBody 邮件文本正文

* @throws MessagingException

*/

public void setTextBody(String strTextBody) throws MessagingException {

MimeBodyPart mimebodypart = new MimeBodyPart();

mimebodypart.setText(strTextBody, "GBK");

mailBody.addBodyPart(mimebodypart);

}

/**

* 设置邮件超文本正文

* @param strHtmlBody 邮件超文本正文

* @throws MessagingException

*/

public void setHtmlBody(String strHtmlBody) throws MessagingException {

MimeBodyPart mimebodypart = new MimeBodyPart();

mimebodypart.setDataHandler(new DataHandler(strHtmlBody, "text/html;charset=GBK"));

mailBody.addBodyPart(mimebodypart);

}

/**

* 设置邮件正文外部链接 URL, 信体中将包含链接所指向的内容

* @param strURLAttachment 邮件正文外部链接 URL

* @throws MessagingException

* @throws MalformedURLException

*/

public void setURLAttachment(String strURLAttachment) throws

MessagingException, MalformedURLException {

MimeBodyPart mimebodypart = new MimeBodyPart();

mimebodypart.setDataHandler(new DataHandler(new URL(strURLAttachment)));

mailBody.addBodyPart(mimebodypart);

}

/**

* 设置邮件附件

* @param strFileAttachment 文件的全路径

* @throws MessagingException

* @throws UnsupportedEncodingException

*/

public void setFileAttachment(String strFileAttachment) throws

MessagingException, UnsupportedEncodingException {

File path = new File(strFileAttachment);

if (!path.exists() || path.isDirectory()) {

return;

}

String strFileName = path.getName();

MimeBodyPart mimebodypart = new MimeBodyPart();

mimebodypart.setDataHandler(new DataHandler(new FileDataSource(

strFileAttachment)));

// modified by zord @ 2003/6/16 to support Chinese File Name

// mimebodypart.setFileName(strFileName);

mimebodypart.setFileName(MimeUtility.encodeText(strFileName));

// end of modify

mailBody.addBodyPart(mimebodypart);

}

/**

* 邮件发送(一次发送多个地址, 优点速度快, 但是有非法邮件地址时将中断发送操作)

* @throws MessagingException

*/

public void sendBatch() throws MessagingException {

Properties properties = new Properties();

properties.put("mail.smtp.host", this.mailSMTPHost);

Session session = Session.getInstance(properties, null);

MimeMessage mimemessage = new MimeMessage(session);

mimemessage.setFrom(new InternetAddress(this.mailFromAddress));

if (mailTOAddress != null) {

mimemessage.addRecipients(javax.mail.Message.RecipientType.TO,

this.mailTOAddress);

}

if (mailCCAddress != null) {

mimemessage.addRecipients(javax.mail.Message.RecipientType.CC,

this.mailCCAddress);

}

if (mailBCCAddress != null) {

mimemessage.addRecipients(javax.mail.Message.RecipientType.BCC,

this.mailBCCAddress);

}

mimemessage.setSubject(this.mailSubject);

mimemessage.setContent(this.mailBody);

mimemessage.setSentDate(new Date());

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

transport.connect(this.mailSMTPHost, this.mailUser, this.mailPassword);

Transport.send(mimemessage);

System.out.println("已向下列邮箱发送了邮件");

if (mailTOAddress != null) {

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

System.out.println(mailTOAddress[i]);

}

}

if (mailCCAddress != null) {

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

System.out.println(mailCCAddress[i]);

}

}

if (mailBCCAddress != null) {

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

System.out.println(mailBCCAddress[i]);

}

}

}

static public void main(String str[]) throws MessagingException

{

Mail mail=new Mail();

mail.setAddress("jgls@21cn.com",Mail.TO);

mail.setFromAddress("jgls@21cn.com");

mail.setSMTPHost("mail.21cn.com","","");

mail.setSubject("测试一下");

mail.setHtmlBody("");

mail.sendBatch();

}

}