📄 mailbrowserservlet.java

📁 一个java写的加密算法
💻 JAVA
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/* * Copyright 2004-2005 Sun Microsystems, Inc.  All rights reserved. * Use is subject to license terms. */package samples.connectors.mailconnector.servlet;import java.io.IOException;import java.io.PrintWriter;import java.util.logging.*;import javax.mail.Message;import javax.mail.Session;import javax.mail.Transport;import javax.mail.internet.InternetAddress;import javax.mail.internet.MimeMessage;import javax.naming.Context;import javax.naming.InitialContext;import javax.servlet.RequestDispatcher;import javax.servlet.ServletException;import javax.servlet.http.HttpSession;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.naming.*;//import samples.connectors.mailconnector.ra.outbound.*;import samples.connectors.mailconnector.api.*;import samples.connectors.mailconnector.share.*;/** */public class MailBrowserServlet extends HttpServlet {    JavaMailConnectionFactory connectionFactory = null;    public static final Logger  logger =         Logger.getLogger("samples.connectors.mailconnector.servlet");    /*     *  Look up the Connection Factory     */    public void init()         throws ServletException     {        Context           context = null;        logger.info("In MailBrowserServlet::init()");        try        {            context = new InitialContext();            // Look up a connection factory            connectionFactory = (JavaMailConnectionFactory)                 context.lookup("java:comp/env/eis/MyConnectionFactory");        } catch (Throwable t) {            // Exception or NamingException could be thrown            logger.severe("MailBrowserServlet::init: Exception: " +                 t.toString());	    throw new ServletException("Couldn't get a Connection Factory.");        }    }    public void doPost(HttpServletRequest request,                       HttpServletResponse response)        throws IOException, ServletException    {        // Acquire request parameters we need        String foldername = request.getParameter("folder");        String servername = request.getParameter("server");        String username   = request.getParameter("username");	String password   = request.getParameter("password");        String protocol   = request.getParameter("protocol");	if ( protocol   == null || protocol.equals("")   ||	     foldername == null || foldername.equals("") ||	     servername == null || servername.equals("") ||	     username   == null || username.equals("")   || 	     password   == null || password.equals("") )         {              RequestDispatcher rd =                  getServletContext().getRequestDispatcher("/mailbrowser.jsp");              rd.forward(request, response);	      return;        } 	// Save these values in the session object (would be used as default 	//  values by JSP page)	HttpSession session = request.getSession();	session.setAttribute("folder", foldername);	session.setAttribute("server", servername);	session.setAttribute("username", username);	session.setAttribute("password", password);	session.setAttribute("protocol", protocol);	        // Prepare the beginning of our response        PrintWriter writer = response.getWriter();        response.setContentType("text/html");        writer.println("<html>");        writer.println("<head>");	String mailBox = username + "-" + foldername + "@" + servername;        writer.println("<title>MailBox: " + mailBox + " </title>");        writer.println("</head>");        writer.println("<body bgcolor=\"white\">");	writer.println("<strong>Mailbox: " + mailBox + " </strong><BR>");        	try     	{	    ConnectionSpecImpl connectionSpec = new ConnectionSpecImpl();            connectionSpec.setUserName(username);            connectionSpec.setPassword(password);            connectionSpec.setServerName(servername);            connectionSpec.setFolderName(foldername);            connectionSpec.setProtocol(protocol);            JavaMailConnection connection = 	                    connectionFactory.createConnection(connectionSpec);                        if ( connection != null )            {              javax.mail.Message[] msgs = connection.getNewMessages();	      if ( msgs != null)	      {		writer.println("<table border=\"1\"" +		               "summary=\"new messages at: " + mailBox +			       "\"><CAPTION><EM>");	        if (msgs.length > 1)		    writer.println("There are " + msgs.length + 			       " new messages");		else		    writer.println("There is only " + msgs.length + 			       " new message");		writer.println("</EM></CAPTION><tr><th>ID</th>" +		               "<th><b>Sender</b></th><th><b>Subject</b>" +		               "</th></tr>");	        for (int i = 0; i < msgs.length; i++)	      	{		    InternetAddress[] from = 		        (InternetAddress[])msgs[i].getFrom();		    String sender = "Unknown";		    if (from.length > 0)		        sender = from[0].toString();		    writer.println("<tr><td>" + i + "</td><td>" + sender +				   "</td><td>" + msgs[i].getSubject() +				   "</td></tr>");	        }                writer.println("</table>");                connection.close();	      } else	        writer.println("<strong> No new messages available </strong>");            } else              writer.println("<strong> Can't not obtain a connection </strong>");                 } catch (Throwable t) {            writer.println("<font color=\"red\">");            writer.println("ERROR when attempting to open this mailbox: <B> "                            + mailBox + "</B> <BR>"                             + t.getMessage());            //writer.println("<pre>");            // Uncomment next line to see the full stack trace             // t.printStackTrace(writer);            //writer.println("</pre>");            writer.println("</font>");            writer.println("<BR>Review the values you entered and try again.");        }        // Prepare the ending of our response        writer.println("<br><br>");        writer.println("<a href=\"mailbrowser.jsp\">Check for new messages</a><br>");        writer.println("<a href=\"index.html\">Return to main page</a><br>");        writer.println("</body>");        writer.println("</html>");            }}
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