JavaMail 發送郵件類

 
/**


郵件發送組件類
該類需要三個jar文件: mail.jar,activation.jar,htmlparser.jar
@author Winter Lau (winter.lau[at]163.com)
@version 1.0
*/
package lius.util.mail;

import java.io.File;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Date;
import java.util.Properties;
import javax.activation.DataHandler;
import javax.activation.DataSource;
import javax.activation.FileDataSource;
import javax.mail.Authenticator;
import javax.mail.BodyPart;
import javax.mail.Message;
import javax.mail.MessagingException;
import javax.mail.Multipart;
import javax.mail.PasswordAuthentication;
import javax.mail.SendFailedException;
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 org.htmlparser.Node;
import org.htmlparser.Parser;
import org.htmlparser.tags.ImageTag;
import org.htmlparser.util.ParserException;
/**

郵件發送組件,具體的使用方法參照該類的main方法
@author Winter Lau
*/
public abstract class MailSender extends Authenticator{
private String username = null;     //郵件發送帳號用戶名
 private String userpasswd = null;   //郵件發送帳號用戶口令
 protected BodyPart messageBodyPart = null;
 protected Multipart multipart = new MimeMultipart(\"related\");
 protected MimeMessage mailMessage = null;
 protected Session mailSession = null;
 protected Properties mailProperties = System.getProperties();
 protected InternetAddress mailFromAddress = null;
 protected InternetAddress mailToAddress = null;
 protected Authenticator authenticator = null;
 protected String mailSubject = \"\";
 protected Date mailSendDate = null;
/**

構造函數
@param smtpHost
@param username
@param password
*/
protected MailSender(String smtpHost, String username, String password) {
 this.username = username;
 this.userpasswd = password;
 mailProperties.put(\"mail.smtp.host\", smtpHost);
 mailProperties.put(\"mail.smtp.auth\", \"true\"); //設置smtp認證，很關鍵的一句
 mailSession = Session.getDefaultInstance(mailProperties, this);
 mailMessage = new MimeMessage(mailSession);
 messageBodyPart = new MimeBodyPart();
}
/**
構造一個純文本郵件發送實例
@param smtpHost
@param username
@param password
@return
*/
public static MailSender getTextMailSender(String smtpHost, String username, String password) {

 return new MailSender(smtpHost,username,password) {
 public void setMailContent(String mailContent) throws MessagingException {
     messageBodyPart.setText(mailContent);
     multipart.addBodyPart(messageBodyPart);
 }            

 };

}
/**
構造一個超文本郵件發送實例
@param smtpHost
@param username
@param password
@return
*/
public static MailSender getHtmlMailSender(String smtpHost, String username, String password) {
 return new MailSender(smtpHost,username,password) {

 private ArrayList arrayList1 = new ArrayList();
 private ArrayList arrayList2 = new ArrayList();

 public void setMailContent(String mailContent) throws MessagingException {
     String htmlContent = getContent(\"<img src=\", mailContent);
     messageBodyPart.setContent(htmlContent, \"text/html;charset=GB2312\");
     multipart.addBodyPart(messageBodyPart);
     //調用處理html文件中的圖片方法
     processHtmlImage(mailContent);
 }

 //處理html頁面上的圖片方法如下：
 private void processHtmlImage(String mailContent) throws MessagingException {
     for (int i = 0; i < arrayList1.size(); i++) {
         messageBodyPart = new MimeBodyPart();
         DataSource source = new FileDataSource((String) arrayList1.get(i));
         messageBodyPart.setDataHandler(new DataHandler(source));
         String contentId = \"<\" + (String) arrayList2.get(i) + \">\";
         messageBodyPart.setHeader(\"Content-ID\", contentId);
         messageBodyPart.setFileName((String) arrayList1.get(i));
         multipart.addBodyPart(messageBodyPart);
     }
 }

 //處理要發送的html文件，主要是針對html文件中的圖片
 private String getContent(String searchString, String mailContent) {
     try {
         Parser parser = Parser.createParser(new String(mailContent.getBytes(), ISO8859_1));
         Node[] images = parser.extractAllNodesThatAre(ImageTag.class);
         for(int i=0;i<images.length;i++) {
             ImageTag imgTag = (ImageTag) images[i];
             if(!imgTag.getImageURL().toLowerCase().startsWith(\"http://\"))
                 arrayList1.add(imgTag.getImageURL());
         }
     } catch (UnsupportedEncodingException e1) {
     } catch (ParserException e) {}
     String afterReplaceStr = mailContent;
     //在html文件中用\"cid:\"+Content-ID來替換原來的圖片鏈接
     for (int m = 0; m < arrayList1.size(); m++) {
         arrayList2.add(createRandomStr());
         String addString = \"cid:\" + (String) arrayList2.get(m);
         afterReplaceStr = mailContent.replaceAll(
                 (String) arrayList1.get(m), addString);
     }
     return afterReplaceStr;
 }

 //產生一個隨機字符串，為了給圖片設定Content-ID值
 private String createRandomStr() {
     char[] randomChar = new char[8];
     for (int i = 0; i < 8; i++) {
         randomChar[i] = (char) (Math.random() * 26 + \'a\');
     }
     String replaceStr = new String(randomChar);
     return replaceStr;
 }

 private final static String ISO8859_1 = \"8859_1\";  

};
}
/**

用于實現郵件發送用戶驗證
@see javax.mail.Authenticator#getPasswordAuthentication
*/
protected PasswordAuthentication getPasswordAuthentication() {
 return new PasswordAuthentication(username, userpasswd);
}
/**

設置郵件標題
@param mailSubject
@throws MessagingException
*/
public void setSubject(String mailSubject) throws MessagingException {
 this.mailSubject = mailSubject;
 mailMessage.setSubject(mailSubject);
}
/**

所有子類都需要實現的抽象方法，為了支持不同的郵件類型
@param mailContent
@throws MessagingException
*/
protected abstract void setMailContent(String mailContent) throws MessagingException;
/**

設置郵件



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