eConf是一个开源利用Java开发的e-learning软件.

package be.ac.fundp.infonet.util; import java.io.*; import java.util.*; import javax.mail.*; import javax.mail.internet.*; import javax.activation.*; /** * This class offers SMTP features. It uses the SUN JavaMail API.<BR> * Convenient methods are provided for simple mail. Here is a typical use of this class for * sending a more elaborated mail:<BR> * <p> * <code> * Message msg = Mail.initMessage(from, userName, to, theSubject, mailServer);<BR> * Multipart body = Mail.setMessage("Hello. This is a simple mail");<BR> * body = Mail.addAttachment(body, new File("/home/me/xml/content.xml"));<BR> * body = Mail.addAttachment(body, "/home/me/xml/content2.xml");<BR> * Mail.send(msg, body);<BR> * </code> * </p> * @author Stephane Nicoll - Devoteam * @version 0.4 */ public class Mail { /** * Posts a mail with the specified parameter in plain text. * @param from * The sender's e-mail address * @param userNamr * The user's name (which will be set as the sender of the mail) * @param to * The receiver's e-mail address * @param subject * The subject of the mail * @param message * The message to send * @param mailServer * The address of the SMTP server to use * @see javax.mail.SendFailedException SendFailedException - For more details about exception handling */ public static void postMail(String from, String userName, String to, String subject, String message, String mailServer) throws MessagingException, SendFailedException, UnsupportedEncodingException { Message msg = initMessage(from, userName, to, subject, mailServer); if (msg != null) { msg.setContent(message, "text/plain"); Transport.send(msg); } } /** * Posts a mail with the specified parameter in plain text. * @param from * The sender's e-mail address * @param userNamr * The user's name (which will be set as the sender of the mail) * @param to * The receiver's e-mail address * @param subject * The subject of the mail * @param message * The message to send, contained in a file * @param mailServer * The address of the SMTP server to use * @see javax.mail.SendFailedException SendFailedException - For more details about exception handling */ public static void postMail(String from, String userName, String to, String subject, File message, String mailServer) throws MessagingException, SendFailedException, UnsupportedEncodingException { Message msg = initMessage(from, userName, to, subject, mailServer); if (msg != null) { try { String res = loadFile(message); msg.setContent(res, "text/plain"); Transport.send(msg); } catch (IOException ie) { throw new MessagingException("An error occured while loading the file's content"); } } } /** * Posts a mail with the specified parameter in HTML. * @param from * The sender's e-mail address * @param userName * The user's name (which will be set as the sender of the mail) * @param to * The receiver's e-mail address * @param subject * The subject of the mail * @param message * The message to send * @param mailServer * The address of the SMTP server to use * @see javax.mail.SendFailedException SendFailedException - For more details about exception handling */ public static void postHTMLMail(String from, String userName, String to, String subject, String message, String mailServer) throws MessagingException, SendFailedException, UnsupportedEncodingException { Message msg = initMessage(from, userName, to, subject, mailServer); if (msg != null) { msg.setContent(message, "text/html"); msg.setDisposition(Part.INLINE); Transport.send(msg); } } /** * Posts a mail with the specified parameter in HTML. * @param from * The sender's e-mail address * @param userName * The user's name (which will be set as the sender of the mail) * @param to * The receiver's e-mail address * @param subject * The subject of the mail * @param message * The HTML message to send, contained in a file * @param mailServer * The address of the SMTP server to use * @see javax.mail.SendFailedException SendFailedException - For more details about exception handling */ public static void postHTMLMail(String from, String userName, String to, String subject, File message, String mailServer) throws MessagingException, SendFailedException, UnsupportedEncodingException { Message msg = initMessage(from, userName, to, subject, mailServer); if (msg != null) { try { String res = loadFile(message); msg.setContent(res, "text/html"); msg.setDisposition(Part.INLINE); Transport.send(msg); } catch (IOException ie) { throw new MessagingException("An error occured while loading the file's content"); } } } /** * Initializes a new Message with the specified parameters. * @param from * The sender's e-mail address * @param userNamr * The user's name (which will be set as the sender of the mail) * @param to * The receiver's e-mail address * @param subject * The subject of the mail * @param mailServer * The address of the SMTP server to use * @return a new intialized Message */ public static Message initMessage(String from, String userName, String to, String subject, String mailServer) throws MessagingException, UnsupportedEncodingException { Properties props = new Properties(); props.put("mail.smtp.host", mailServer); // create some properties and get the default Session Session session = Session.getDefaultInstance(props, null); // create a message Message msg = new MimeMessage(session); // set the from and to address InternetAddress addressFrom = new InternetAddress(from); addressFrom.setPersonal(userName); msg.setFrom(addressFrom); InternetAddress[] addressTo = new InternetAddress[1]; addressTo[0] = new InternetAddress(to); msg.setRecipients(Message.RecipientType.TO, addressTo); msg.setSubject(subject); return msg; } /** * Sets the given String as this multi part's content with a MIME type of "text/plain". * @param m * The multi part * @param message * A string representation of the message * @throw MessagingException * If the underlying implementation does not support modification of existing values * @throw IllegalStateException * If the multi part is not intialized properly * @return the multi part modified */ public static Multipart setMessage(Multipart m, String message) throws MessagingException, IllegalStateException { if (m == null) { throw new IllegalStateException("null value is not allowed"); } MimeBodyPart mb = new MimeBodyPart(); mb.setText(message); m.addBodyPart(mb); return m; } /** * Sets the given String as this multi part's content with a MIME type of "text/html". * @param m * The multi part * @param message * A string representation of the HTML message * @throw MessagingException * If the underlying implementation does not support modification of existing values * @throw IllegalStateException * If the multi part is not intialized properly * @return the multi part modified */ public static Multipart setHTMLMessage(Multipart m, String message) throws MessagingException, IllegalStateException { if (m == null) { throw new IllegalStateException("null value is not allowed"); } MimeBodyPart mb = new MimeBodyPart(); mb.setContent