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("[e-mail]",Mail.TO);
mail.setFromAddress("[e-mail]");
mail.setSMTPHost("mail.21cn.com","","");
mail.setSubject("测试一下");
mail.setHtmlBody("");
mail.sendBatch();
}
}