📄 javamailservlet.java
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try {
Message msg = mud.getFolder().getMessage(msgNum);
Multipart mp = (Multipart)msg.getContent();
part = mp.getBodyPart(partNum);
String sct = part.getContentType();
if (sct == null) {
out.println("invalid part");
return;
}
ContentType ct = new ContentType(sct);
res.setContentType(ct.getBaseType());
InputStream is = part.getInputStream();
int i;
while ((i = is.read()) != -1)
out.write(i);
out.flush();
out.close();
} catch (MessagingException mex) {
out.println(mex.toString());
}
}
/**
* This is a utility message that pretty-prints the message
* headers for message that is being displayed.
*/
private void displayMessageHeaders(MailUserData mud, Message msg,
ServletOutputStream out)
throws IOException {
try {
out.println("<b>Date:</b> " + msg.getSentDate() + "<br>");
Address[] fr = msg.getFrom();
if (fr != null) {
boolean tf = true;
out.print("<b>From:</b> ");
for (int i = 0; i < fr.length; i++) {
out.print(((tf) ? " " : ", ") + getDisplayAddress(fr[i]));
tf = false;
}
out.println("<br>");
}
Address[] to = msg.getRecipients(Message.RecipientType.TO);
if (to != null) {
boolean tf = true;
out.print("<b>To:</b> ");
for (int i = 0; i < to.length; i++) {
out.print(((tf) ? " " : ", ") + getDisplayAddress(to[i]));
tf = false;
}
out.println("<br>");
}
Address[] cc = msg.getRecipients(Message.RecipientType.CC);
if (cc != null) {
boolean cf = true;
out.print("<b>CC:</b> ");
for (int i = 0; i < cc.length; i++) {
out.print(((cf) ? " " : ", ") + getDisplayAddress(cc[i]));
cf = false;
}
out.println("<br>");
}
out.print("<b>Subject:</b> " +
((msg.getSubject() !=null) ? msg.getSubject() : "") +
"<br>");
} catch (MessagingException mex) {
out.println(msg.toString());
}
}
/**
* This method displays the URL's for the available commands and the
* INBOX headerlist
*/
private void displayHeaders(MailUserData mud,
HttpServletRequest req,
ServletOutputStream out)
throws IOException {
SimpleDateFormat df = new SimpleDateFormat("EE M/d/yy");
out.println("<html>");
out.println("<HEAD><TITLE>JavaMail Servlet</TITLE></HEAD>");
out.println("<BODY bgcolor=\"#ccccff\"><hr>");
out.print("<center><font face=\"Arial,Helvetica\" font size=\"+3\">");
out.println("<b>Folder " + mud.getStore().getURLName() +
"/INBOX</b></font></center><p>");
// URL's for the commands that are available
out.println("<font face=\"Arial,Helvetica\" font size=\"+3\"><b>");
out.println("<a href=\"" +
HttpUtils.getRequestURL(req) +
"?logout=true\">Logout</a>");
out.println("<a href=\"" +
HttpUtils.getRequestURL(req) +
"?compose=true\" target=\"compose\">Compose</a>");
out.println("</b></font>");
out.println("<hr>");
// List headers in a table
out.print("<table cellpadding=1 cellspacing=1 "); // table
out.println("width=\"100%\" border=1>"); // settings
// sender column header
out.println("<tr><td width=\"25%\" bgcolor=\"ffffcc\">");
out.println("<font face=\"Arial,Helvetica\" font size=\"+1\">");
out.println("<b>Sender</b></font></td>");
// date column header
out.println("<td width=\"15%\" bgcolor=\"ffffcc\">");
out.println("<font face=\"Arial,Helvetica\" font size=\"+1\">");
out.println("<b>Date</b></font></td>");
// subject column header
out.println("<td bgcolor=\"ffffcc\">");
out.println("<font face=\"Arial,Helvetica\" font size=\"+1\">");
out.println("<b>Subject</b></font></td></tr>");
try {
Folder f = mud.getFolder();
int msgCount = f.getMessageCount();
Message m = null;
// for each message, show its headers
for (int i = 1; i <= msgCount; i++) {
m = f.getMessage(i);
// if message has the DELETED flag set, don't display it
if (m.isSet(Flags.Flag.DELETED))
continue;
// from
out.println("<tr valigh=middle>");
out.print("<td width=\"25%\" bgcolor=\"ffffff\">");
out.println("<font face=\"Arial,Helvetica\">" +
((m.getFrom() != null) ?
m.getFrom()[0].toString() :
"" ) +
"</font></td>");
// date
out.print("<td nowrap width=\"15%\" bgcolor=\"ffffff\">");
out.println("<font face=\"Arial,Helvetica\">" +
df.format((m.getSentDate()!=null) ?
m.getSentDate() : m.getReceivedDate()) +
"</font></td>");
// subject & link
out.print("<td bgcolor=\"ffffff\">");
out.println("<font face=\"Arial,Helvetica\">" +
"<a href=\"" +
HttpUtils.getRequestURL(req) +
"?message=" +
i + "\">" +
((m.getSubject() != null) ?
m.getSubject() :
"<i>No Subject</i>") +
"</a>" +
"</font></td>");
out.println("</tr>");
}
} catch (MessagingException mex) {
out.println("<tr><td>" + mex.toString() + "</td></tr>");
mex.printStackTrace();
}
out.println("</table>");
out.println("</BODY></html>");
out.flush();
out.close();
}
/**
* This method handles the request when the user hits the
* <i>Compose</i> link. It send the compose form to the browser.
*/
private void compose(MailUserData mud, HttpServletResponse res,
ServletOutputStream out)
throws IOException {
res.setContentType("text/html");
out.println(composeForm);
out.close();
}
/**
* This method processes the send request from the compose form
*/
private void send(HttpServletRequest req, HttpServletResponse res,
ServletOutputStream out, HttpSession ssn)
throws IOException {
String to = req.getParameter("to");
String cc = req.getParameter("cc");
String subj = req.getParameter("subject");
String text = req.getParameter("text");
try {
MailUserData mud = getMUD(ssn);
if (mud == null)
throw new Exception("trying to send, but not logged in");
Message msg = new MimeMessage(mud.getSession());
InternetAddress[] toAddrs = null, ccAddrs = null;
if (to != null) {
toAddrs = InternetAddress.parse(to, false);
msg.setRecipients(Message.RecipientType.TO, toAddrs);
} else
throw new MessagingException("No \"To\" address specified");
if (cc != null) {
ccAddrs = InternetAddress.parse(cc, false);
msg.setRecipients(Message.RecipientType.CC, ccAddrs);
}
if (subj != null)
msg.setSubject(subj);
URLName u = mud.getURLName();
msg.setFrom(new InternetAddress(u.getUsername() + "@" +
u.getHost()));
if (text != null)
msg.setText(text);
Transport.send(msg);
out.println("<h1>Message sent successfully</h1></body></html>");
out.close();
} catch (Exception mex) {
out.println("<h1>Error sending message.</h1>");
out.println(mex.toString());
out.println("<br></body></html>");
}
}
// utility method; returns a string suitable for msg header display
private String getDisplayAddress(Address a) {
String pers = null;
String addr = null;
if (a instanceof InternetAddress &&
((pers = ((InternetAddress)a).getPersonal()) != null)) {
addr = pers + " "+"<"+((InternetAddress)a).getAddress()+">";
} else
addr = a.toString();
return addr;
}
// utility method; retrieve the MailUserData
// from the HttpSession and return it
private MailUserData getMUD(HttpSession ses) throws IOException {
MailUserData mud = null;
if (ses == null) {
return null;
} else {
if ((mud = (MailUserData)ses.getValue("javamailservlet")) == null){
return null;
}
}
return mud;
}
public String getServletInfo() {
return "A mail reader servlet";
}
/**
* This is the HTML code for the compose form. Another option would
* have been to use a separate html page.
*/
private static String composeForm = "<HTML><HEAD><TITLE>JavaMail Compose</TITLE></HEAD><BODY BGCOLOR=\"#CCCCFF\"><FORM ACTION=\"/servlet/JavaMailServlet\" METHOD=\"POST\"><input type=\"hidden\" name=\"send\" value=\"send\"><P ALIGN=\"CENTER\"><B><FONT SIZE=\"4\" FACE=\"Verdana, Arial, Helvetica\">JavaMail Compose Message</FONT></B><P><TABLE BORDER=\"0\" WIDTH=\"100%\"><TR><TD WIDTH=\"16%\" HEIGHT=\"22\"> <P ALIGN=\"RIGHT\"><B><FONT FACE=\"Verdana, Arial, Helvetica\">To:</FONT></B></TD><TD WIDTH=\"84%\" HEIGHT=\"22\"><INPUT TYPE=\"TEXT\" NAME=\"to\" SIZE=\"30\"> <FONT SIZE=\"1\" FACE=\"Verdana, Arial, Helvetica\"> (separate addresses with commas)</FONT></TD></TR><TR><TD WIDTH=\"16%\"><P ALIGN=\"RIGHT\"><B><FONT FACE=\"Verdana, Arial, Helvetica\">CC:</FONT></B></TD><TD WIDTH=\"84%\"><INPUT TYPE=\"TEXT\" NAME=\"cc\" SIZE=\"30\"> <FONT SIZE=\"1\" FACE=\"Verdana, Arial, Helvetica\"> (separate addresses with commas)</FONT></TD></TR><TR><TD WIDTH=\"16%\"><P ALIGN=\"RIGHT\"><B><FONT FACE=\"Verdana, Arial, Helvetica\">Subject:</FONT></B></TD><TD WIDTH=\"84%\"><INPUT TYPE=\"TEXT\" NAME=\"subject\" SIZE=\"55\"></TD></TR><TR><TD WIDTH=\"16%\"> </TD><TD WIDTH=\"84%\"><TEXTAREA NAME=\"text\" ROWS=\"15\" COLS=\"53\"></TEXTAREA></TD></TR><TR><TD WIDTH=\"16%\" HEIGHT=\"32\"> </TD><TD WIDTH=\"84%\" HEIGHT=\"32\"><INPUT TYPE=\"SUBMIT\" NAME=\"Send\" VALUE=\"Send\"><INPUT TYPE=\"RESET\" NAME=\"Reset\" VALUE=\"Reset\"></TD></TR></TABLE></FORM></BODY></HTML>";
}
/**
* This class is used to store session data for each user's session. It
* is stored in the HttpSession.
*/
class MailUserData {
URLName url;
Session session;
Store store;
Folder folder;
public MailUserData(URLName urlname) {
url = urlname;
}
public URLName getURLName() {
return url;
}
public Session getSession() {
return session;
}
public void setSession(Session s) {
session = s;
}
public Store getStore() {
return store;
}
public void setStore(Store s) {
store = s;
}
public Folder getFolder() {
return folder;
}
public void setFolder(Folder f) {
folder = f;
}
}
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