G-InfoArena: Code for forgot password module using JSP and Servlet

Monday, 6 May 2013

Code for forgot password module using JSP and Servlet

code for forgot password

Following directory Structure you need to create for this(Tomcat directory i had used)

WEB.xml

JSP files

ResetPassword.jsp
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>Reset your Password</title> <link rel="stylesheet" href="css/tableLayout.css"> <script type="text/javascript"> function Verify() { var emailpattern = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/; var emailObj = document.getElementById("cus_email"); if (emailObj.value == null || emailObj.value == "") { alert("Enter email Id"); emailObj.focus(); return false; } else if (!emailpattern.test(emailObj.value)) { alert("please enter valid e-mail address") emailObj.focus(); return false; } else { return true; } } </script> </head> <body> <form method="post" action="./Send"> <% if (request.getAttribute("linkfailuremsg") != null) { %> <font color="black" size="4"><p align="center" style="background-color: lightyellow"> This link has been accessed once already.<br> OR it has been more than 1 hour since you requested for it.<br> In case you are trying to reset your password again, request for new link below. </p></font> <% } %> <table class="tablelayout"> <caption>Reset your Password</caption> <tr> <td class="required">Enter your Email id</td> <td><input type="text" name="cus_email" id="cus_email" /></td> </tr> <tr> <td colspan="2"><input type="submit" value="reset" onclick="javascript: return Verify()" /></td> </tr> </table> </form> </body> </html>
SetNewPassword.jsp
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Set New Password</title> <link rel="stylesheet" href="css/tableLayout.css"> <script type="text/javascript"> function verfiypass() { var emailpattern = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/; if (document.getElementById("mailid").value == "") { alert("Enter Email ID "); document.getElementById("mailid").focus(); return false; } else if (!emailpattern.test(document.getElementById("mailid").value)) { alert("please enter valid e-mail address"); document.getElementById("mailid").focus(); return false; } if (document.getElementById("pwd").value == "") { alert("Enter Password"); document.getElementById("pwd").focus(); return false; } else if (document.getElementById("cpwd").value == "") { alert("Confirm the Password"); document.getElementById("cpwd").focus(); return false; } else if (document.getElementById("pwd").value != document .getElementById("cpwd").value) { alert("Password and Confirm password do not match"); document.getElementById("pwd").focus(); return false; } else { return true; } } </script> </head> <body> <form method="post" action="./Reset"> <table class="tablelayout curve"> <caption>Set new Credentials</caption> <tr> <td><label class="required">Enter your Registered mail id</label></td> <td><input type="text" name="mailid" id="mailid" /></td> </tr> <tr> <td><label class="required">Enter new Password</label></td> <td><input type="password" name="pwd" id="pwd"></td> </tr> <tr> <td><label class="required">Confirm Password</label></td> <td><input type="password" name="cpwd" id="cpwd"></td> </tr> <tr> <td align="center" colspan="2"><input type="submit" value="submit" onclick=" return verfiypass()" /></td> </tr> </table> </form> </body> </html>

CSS File

tableLayout.css
@CHARSET "ISO-8859-1"; .curve { border-top-left-radius: 6px; border-top-right-radius: 6px; border-bottom-left-radius: 6px; border-bottom-right-radius: 6px; } .tablelayout { margin: 15px auto; width: 500px; height: 200px; font-family: sans-serif; font-size: 15px; border: 1px solid silver; } .tablelayout caption { text-transform: uppercase; font-weight: bold; color: burlywood; } .tablelayout td { padding: 10px; height: 20px; } .tablelayout td input[type='text'],.tablelayout td input[type='password'] { height: 25px; width: 200px; } :FOCUS { border-color: blue; } .tablelayout td input[type='submit'] { height: 35px; width: 100px; text-transform: uppercase; background-color: black; color: #ffffff; } .required:AFTER { color: red; content: " *"; }

Servlet

AuthenticateRequest.java
package com.fpwd.servlet; import java.io.IOException; import java.io.PrintWriter; import java.util.Map; import javax.servlet.RequestDispatcher; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import com.fpwd.DAO.FPDao; import com.fpwd.util.Utility; /** * Servlet implementation class AuthenticateRequest */ public class AuthenticateRequest extends HttpServlet { private static final long serialVersionUID = 1L; private Utility utility; private FPDao dao; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { PrintWriter out = response.getWriter(); HttpSession session = request.getSession(); utility = Utility.getInstance(); String utid = utility.decryptData(request.getParameter("UTID")); String useremail = utility.decryptData(request .getParameter("USERID")); dao = new FPDao(); Map<String , String> data = dao.verifyRequest(utid, useremail); if (data.get("RESULT").toString().equalsIgnoreCase("SUCCESS")) { session.setAttribute("tokenId", utid); response.sendRedirect(data.get("REASON").toString()); } else if (data.get("RESULT").toString() .equalsIgnoreCase("FAILURE") && data.get("REASON").toString() .equalsIgnoreCase("TIMEOUT")) { request.setAttribute("linkfailuremsg", "on"); RequestDispatcher view = request .getRequestDispatcher("ResetPassword.jsp"); view.forward(request, response); } else if (data.get("RESULT").toString() .equalsIgnoreCase("FAILURE") && data.get("REASON").toString() .equalsIgnoreCase("INVALIDREQ")) { out.println("<html> <head /> <body> <center> <div style='color: #D8000C; background-color: #FFBABA;'> <b>Invalid Request</b> </div> </center> </body> </html>"); } else if (data.get("RESULT").toString() .equalsIgnoreCase("EXCEPTION")) { out.println("<html> <head /> <body> <center> <div style='color: #D8000C; background-color: #FFBABA;'> <b>Internal Exception Occured! Please try Later<br />Reason:-" + data.get("REASON").toString() + "</b> </div> </center> </body> </html>"); } } catch (Exception e) { response.getWriter() .println( "<html> <head /> <body> <center> <div style='color: #D8000C; background-color: #FFBABA;'> <b>Internal Exception Occured! Please try Later<br />Reason:-" + e.getMessage() + "</b> </div> </center> </body> </html>"); } } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } }
ResetPassword.java
package com.fpwd.servlet; import java.io.IOException; import java.io.PrintWriter; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.fpwd.DAO.FPDao; /** * Servlet implementation class ResetPassword */ public class ResetPassword extends HttpServlet { private static final long serialVersionUID = 1L; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { PrintWriter out = response.getWriter(); FPDao fpdao; try { String newpass = request.getParameter("pwd"); String mailid = request.getParameter("mailid"); String utid = (String) request.getSession().getAttribute("tokenId"); fpdao = new FPDao(); Map<String , String> data = fpdao.insertData(utid, mailid, newpass); if (data.get("RESULT").toString().equalsIgnoreCase("SUCCESS")) { out.println("<html> <head /> <body> <center> <div style='color: #4F8A10; background-color: #DFF2BF;'> <b>" + data.get("REASON").toString() + "</b> </div> </center> </body> </html>"); } else if (data.get("RESULT").toString() .equalsIgnoreCase("FAILURE")) { out.println("<html> <head /> <body> <center> <div style='color: #D8000C; background-color: #FFBABA;'> <b>" + data.get("REASON").toString() + "</b> </div> </center> </body> </html>"); } else if (data.get("RESULT").toString() .equalsIgnoreCase("EXCEPTION")) { out.println("<html> <head /> <body> <center> <div style='color: #D8000C; background-color: #FFBABA;'> <b>Internal Exception Occured! Please try Later<br />Reason:-" + data.get("REASON").toString() + "</b> </div> </center> </body> </html>"); } } catch (Exception e) { response.getWriter() .println( "<html> <head /> <body> <center> <div style='color: #D8000C; background-color: #FFBABA;'> <b>Internal Exception Occured! Please try Later<br />Reason:-" + e.getMessage() + "</b> </div> </center> </body> </html>"); } finally { out.close(); } } }
SendResetLink.java
package com.fpwd.servlet; import java.io.IOException; import java.io.PrintWriter; import java.util.Map; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.fpwd.DAO.FPDao; /** * Servlet implementation class SendResetLink */ public class SendResetLink extends HttpServlet { private static final long serialVersionUID = 1L; FPDao dao; protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { } protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { PrintWriter out = response.getWriter(); String useremail = request.getParameter("cus_email"); dao = new FPDao(); Map<String , String> data = dao.insertData(useremail); if (data.get("RESULT").toString().equalsIgnoreCase("SUCCESS")) { out.println("<html> <head /> <body> <center> <div style='color: #4F8A10; background-color: #DFF2BF;'> <b>" + data.get("REASON").toString() + "</b> </div> </center> </body> </html>"); } else if (data.get("RESULT").toString() .equalsIgnoreCase("FAILURE")) { out.println("<html> <head /> <body> <center> <div style='color: #D8000C; background-color: #FFBABA;'> <b>" + data.get("REASON").toString() + "</b> </div> </center> </body> </html>"); } else if (data.get("RESULT").toString() .equalsIgnoreCase("EXCEPTION")) { out.println("<html> <head /> <body> <center> <div style='color: #D8000C; background-color: #FFBABA;'> <b>Internal Exception Occured! Please try Later<br />Reason:-" + data.get("REASON").toString() + "</b> </div> </center> </body> </html>"); } } catch (Exception e) { response.getWriter() .println( "<html> <head /> <body> <center> <div style='color: #D8000C; background-color: #FFBABA;'> <b>Internal Exception Occured! Please try Later<br />Reason:-" + e.getMessage() + "</b> </div> </center> </body> </html>"); } } }

Common Classes

AESEncryption.java
/* * * Author: Gaurav Pathak */ package com.fpwd.common; import java.util.ResourceBundle; import javax.crypto.*; import javax.crypto.spec.SecretKeySpec; import sun.misc.BASE64Decoder; import sun.misc.BASE64Encoder; /* * * This class is used to encrypt the secret token send along the mail. USE SECRET KEY OF LENGTH 16. */ public class AESEncryption{ private static final String ALGO = "AES"; private static ResourceBundle rb2 = ResourceBundle.getBundle("com.fpwd.commonconfig\\DB"); private static String key=rb2.getString("secretkeyforpass"); private static final byte[] keyValue = key.getBytes(); public static String encrypt(String Data) throws Exception { SecretKeySpec key = generateKey(); Cipher c = Cipher.getInstance(ALGO); c.init(Cipher.ENCRYPT_MODE, key); byte[] encVal = c.doFinal(Data.getBytes()); String encryptedValue = new BASE64Encoder().encode(encVal); return encryptedValue; } public static String decrypt(String encryptedData) throws Exception { SecretKeySpec key = generateKey(); Cipher c = Cipher.getInstance(ALGO); c.init(Cipher.DECRYPT_MODE, key); byte[] decordedValue = new BASE64Decoder().decodeBuffer(encryptedData); byte[] decValue = c.doFinal(decordedValue); String decryptedValue = new String(decValue); return decryptedValue; } private static SecretKeySpec generateKey() throws Exception { SecretKeySpec key = new SecretKeySpec(keyValue, ALGO); return key; } }
Base64Coder.java
package com.fpwd.common; import java.lang.StringBuffer; public class Base64Coder { // The line separator string of the operating system. private static final String systemLineSeparator = "ABCD"; //System.getProperty("line.separator"); // Mapping table from 6-bit nibbles to Base64 characters. private static char[] map1 = new char[64]; static { int i=0; for (char c='A'; c<='Z'; c++) map1[i++] = c; for (char c='a'; c<='z'; c++) map1[i++] = c; for (char c='0'; c<='9'; c++) map1[i++] = c; map1[i++] = '+'; map1[i++] = '/'; } // Mapping table from Base64 characters to 6-bit nibbles. private static byte[] map2 = new byte[128]; static { for (int i=0; i<map2.length ; i++) map2[i] =-1; for (int i=0; i<64; i++) map2[map1[i]] = (byte)i; } /** * Encodes a string into Base64 format. * No blanks or line breaks are inserted. * @param s A String to be encoded. * @return A String containing the Base64 encoded data. */ public static String encodeString (String s) { return new String(encode(s.getBytes())); } /** * Encodes a byte array into Base 64 format and breaks the output into lines of 76 characters. * This method is compatible with <code>sun.misc.BASE64Encoder.encodeBuffer(byte[])</code>. * @param in An array containing the data bytes to be encoded. * @return A String containing the Base64 encoded data, broken into lines. */ public static String encodeLines (byte[] in) { return encodeLines(in, 0, in.length, 76, systemLineSeparator); } /** * Encodes a byte array into Base 64 format and breaks the output into lines. * @param in An array containing the data bytes to be encoded. * @param iOff Offset of the first byte in <code>in</code> to be processed. * @param iLen Number of bytes to be processed in <code>in</code>, starting at <code>iOff</code>. * @param lineLen Line length for the output data. Should be a multiple of 4. * @param lineSeparator The line separator to be used to separate the output lines. * @return A String containing the Base64 encoded data, broken into lines. */ public static String encodeLines (byte[] in, int iOff, int iLen, int lineLen, String lineSeparator) { int blockLen = (lineLen*3) / 4; if (blockLen <= 0) throw new IllegalArgumentException(); int lines = (iLen+blockLen-1) / blockLen; int bufLen = ((iLen+2)/3)*4 + lines*lineSeparator.length(); StringBuffer buf = new StringBuffer(bufLen); // StringBuilder buf = new StringBuilder(bufLen); int ip = 0; while (ip < iLen) { int l = Math.min(iLen-ip, blockLen); buf.append (encode(in, iOff+ip, l)); buf.append (lineSeparator); ip += l; } return buf.toString(); } /** * Encodes a byte array into Base64 format. * No blanks or line breaks are inserted in the output. * @param in An array containing the data bytes to be encoded. * @return A character array containing the Base64 encoded data. */ public static char[] encode (byte[] in) { return encode(in, 0, in.length); } /** * Encodes a byte array into Base64 format. * No blanks or line breaks are inserted in the output. * @param in An array containing the data bytes to be encoded. * @param iLen Number of bytes to process in <code>in</code>. * @return A character array containing the Base64 encoded data. */ public static char[] encode (byte[] in, int iLen) { return encode(in, 0, iLen); } /** * Encodes a byte array into Base64 format. * No blanks or line breaks are inserted in the output. * @param in An array containing the data bytes to be encoded. * @param iOff Offset of the first byte in <code>in</code> to be processed. * @param iLen Number of bytes to process in <code>in</code>, starting at <code>iOff</code>. * @return A character array containing the Base64 encoded data. */ public static char[] encode (byte[] in, int iOff, int iLen) { int oDataLen = (iLen*4+2)/3; // output length without padding int oLen = ((iLen+2)/3)*4; // output length including padding char[] out = new char[oLen]; int ip = iOff; int iEnd = iOff + iLen; int op = 0; while (ip < iEnd) { int i0 = in[ip++] & 0xff; int i1 = ip < iEnd ? in[ip++] & 0xff : 0; int i2 = ip < iEnd ? in[ip++] & 0xff : 0; int o0 = i0 >>> 2; int o1 = ((i0 & 3) << 4) | (i1 >>> 4); int o2 = ((i1 & 0xf) << 2) | (i2 >>> 6); int o3 = i2 & 0x3F; out[op++] = map1[o0]; out[op++] = map1[o1]; out[op] = op < oDataLen ? map1[o2] : '='; op++; out[op] = op < oDataLen ? map1[o3] : '='; op++; } return out; } /** * Decodes a string from Base64 format. * No blanks or line breaks are allowed within the Base64 encoded input data. * @param s A Base64 String to be decoded. * @return A String containing the decoded data. * @throws IllegalArgumentException If the input is not valid Base64 encoded data. */ public static String decodeString (String s) { return new String(decode(s)); } /** * Decodes a byte array from Base64 format and ignores line separators, tabs and blanks. * CR, LF, Tab and Space characters are ignored in the input data. * This method is compatible with <code>sun.misc.BASE64Decoder.decodeBuffer(String)</code>. * @param s A Base64 String to be decoded. * @return An array containing the decoded data bytes. * @throws IllegalArgumentException If the input is not valid Base64 encoded data. */ public static byte[] decodeLines (String s) { char[] buf = new char[s.length()]; int p = 0; for (int ip = 0; ip < s.length(); ip++) { char c = s.charAt(ip); if (c != ' ' && c != '\r' && c != '\n' && c != '\t') buf[p++] = c; } return decode(buf, 0, p); } /** * Decodes a byte array from Base64 format. * No blanks or line breaks are allowed within the Base64 encoded input data. * @param s A Base64 String to be decoded. * @return An array containing the decoded data bytes. * @throws IllegalArgumentException If the input is not valid Base64 encoded data. */ public static byte[] decode (String s) { return decode(s.toCharArray()); } /** * Decodes a byte array from Base64 format. * No blanks or line breaks are allowed within the Base64 encoded input data. * @param in A character array containing the Base64 encoded data. * @return An array containing the decoded data bytes. * @throws IllegalArgumentException If the input is not valid Base64 encoded data. */ public static byte[] decode (char[] in) { return decode(in, 0, in.length); } /** * Decodes a byte array from Base64 format. * No blanks or line breaks are allowed within the Base64 encoded input data. * @param in A character array containing the Base64 encoded data. * @param iOff Offset of the first character in <code>in</code> to be processed. * @param iLen Number of characters to process in <code>in</code>, starting at <code>iOff</code>. * @return An array containing the decoded data bytes. * @throws IllegalArgumentException If the input is not valid Base64 encoded data. */ public static byte[] decode (char[] in, int iOff, int iLen) { if (iLen%4 != 0) throw new IllegalArgumentException ("Length of Base64 encoded input string is not a multiple of 4."); while (iLen > 0 && in[iOff+iLen-1] == '=') iLen--; int oLen = (iLen*3) / 4; byte[] out = new byte[oLen]; int ip = iOff; int iEnd = iOff + iLen; int op = 0; while (ip < iEnd) { int i0 = in[ip++]; int i1 = in[ip++]; int i2 = ip < iEnd ? in[ip++] : 'A'; int i3 = ip < iEnd ? in[ip++] : 'A'; if (i0 > 127 || i1 > 127 || i2 > 127 || i3 > 127) throw new IllegalArgumentException ("Illegal character in Base64 encoded data."); int b0 = map2[i0]; int b1 = map2[i1]; int b2 = map2[i2]; int b3 = map2[i3]; if (b0 < 0 || b1 < 0 || b2 < 0 || b3 < 0) throw new IllegalArgumentException ("Illegal character in Base64 encoded data."); int o0 = ( b0 <<2) | (b1>>>4); int o1 = ((b1 & 0xf)<<4) | (b2>>>2); int o2 = ((b2 & 3)<<6) | b3; out[op++] = (byte)o0; if (op<oLen) out[op++] = (byte)o1; if (op<oLen) out[op++] = (byte)o2; } return out; } }
Datedifference.java
/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package com.fpwd.common; import java.text.SimpleDateFormat; import java.util.Date; import java.util.MissingResourceException; import java.util.ResourceBundle; /** * * @author Gaurav Pathak * * This class is used to calculate the time difference from the date * value stored in Database. */ public class Datedifference { private int expiredhour; private int expiredmin; private int expiredsec; private int expireddays; private ResourceBundle rb2; private String msg = null; public Datedifference() throws NullPointerException, MissingResourceException { rb2 = ResourceBundle.getBundle("com.fpwd.commonconfig\\DB"); this.expiredhour = Integer.parseInt(rb2.getString("expiredhour")); this.expiredmin = Integer.parseInt(rb2.getString("expiredmin")); this.expiredsec = Integer.parseInt(rb2.getString("expiredsec")); this.expireddays = Integer.parseInt(rb2.getString("expireddays")); } /* * @param lastaccessdate * * @param todaydate return String */ public String datevalidator(String lastaccessdate, String todaydate) throws Exception { String dateStart = lastaccessdate; String dateStop = todaydate; // HH converts hour in 24 hours format (0-23), day calculation SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); Date d1 = null; Date d2 = null; try { d1 = format.parse(dateStart); d2 = format.parse(dateStop); // in milliseconds long diff = d2.getTime() - d1.getTime(); long diffSeconds = diff / 1000 % 60; long diffMinutes = diff / (60 * 1000) % 60; long diffHours = diff / (60 * 60 * 1000) % 24; long diffDays = diff / (24 * 60 * 60 * 1000); // System.out.print(diffDays + " days, "); // System.out.print(diffHours + " hours, "); // System.out.print(diffMinutes + " minutes, "); // System.out.print(diffSeconds + " seconds."); /* * Here according to the properties values , reset password link is * valid for 1 hour only from the time its delivered to recipent. */ if ((diffHours > expiredhour && diffMinutes >= expiredmin && diffSeconds >= expiredsec) || diffDays >= expireddays) { // if(diffMinutes>4){ msg = "invalid"; } else { msg = "valid"; } } catch (Exception e) { throw new Exception( "Exception occured in date validator:- Cause->[" + e + "]"); } return msg; } }
DBconnection.java
/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package com.fpwd.common; import java.sql.Connection; import java.sql.DriverManager; import java.util.ResourceBundle; /** * * @author gaurav pathak */ public class DBconnection { String driver = null; String url = null; Connection con = null; ResourceBundle rb = null; public DBconnection() { rb = ResourceBundle.getBundle("com.fpwd.commonconfig\\DB"); this.driver = rb.getString("driver"); this.url = rb.getString("url"); } public Connection getConnection() throws Exception { try { Class.forName(driver); this.con = DriverManager.getConnection(url); } catch (Exception e) { throw new Exception("Exception occured at getConnection " + e.getMessage()); } return con; } }
SendMail.java
/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package com.fpwd.common; /** * * @author gaurav pathak */ /* * Purpose of this class to send the mail. * It can send the text as well as attachments based on the inputs. */ import java.io.FileInputStream; import java.util.Date; import java.util.Properties; import java.util.ResourceBundle; import javax.activation.DataHandler; import javax.activation.FileDataSource; import javax.mail.Authenticator; import javax.mail.Message; import javax.mail.Multipart; import javax.mail.PasswordAuthentication; 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; public class SendMail { FileInputStream fin; Properties prop = new Properties(); public String mail_from = "", mail_pwd = ""; public String host = ""; public String port = ""; public String authtype = ""; public String key = ""; public SendMail() { try { ResourceBundle rb2 = ResourceBundle .getBundle("com.fpwd.commonconfig\\mail-config"); mail_from = rb2.getString("mail-from"); // System.out.println("Mail Sender :" + mail_from); mail_pwd = rb2.getString("mail-pwd"); // System.out.println("Sender Password: " + mail_pwd); host = rb2.getString("host"); // System.out.println("Host name: " + host); port = rb2.getString("port"); // System.out.println("port: " + port); authtype = rb2.getString("authtype"); // System.out.println("authtype is :" + authtype); key = rb2.getString("key"); // System.out.println("key :" + key); } catch (Exception e) { System.out .println("Exception occured at SendMail constructor " + e); } } public boolean sendMail(String to, String[] cc, String subject, String content, String attachment) throws Exception { // System.out.println("Inside sendMail block"); boolean sent = true; try { // Properties props = new Properties(); //System.out.println("inside properties"); props.put("mail.smtp.auth", authtype); props.put("mail.smtp.host", host); props.put("mail.smtp.port", port); props.put("mail.smtp.debug", "true"); Authenticator auth = new SMTPAuthenticator(); Session session = Session.getInstance(props, auth); //System.out.println("session object"); session.setDebug(true); MimeMessage msg = new MimeMessage(session); msg.setFrom(new InternetAddress(mail_from)); //System.out.println("Mail from Address appended succesfully"); InternetAddress[] toAddress = { new InternetAddress(to) }; msg.setRecipients(Message.RecipientType.TO, toAddress); msg.setSubject(subject); //System.out.println("Mail Message appended succesfully"); // create and fill the first message part MimeBodyPart mbp1 = new MimeBodyPart(); mbp1.setText(content); // create the second message part MimeBodyPart mbp2 = new MimeBodyPart(); // attach the file to the message if (attachment != null) { FileDataSource fds = new FileDataSource(attachment); mbp2.setDataHandler(new DataHandler(fds)); mbp2.setFileName(fds.getName()); } // create the Multipart and add its parts to it // System.out.println("before creating multipart object"); Multipart mp = new MimeMultipart(); mp.addBodyPart(mbp1); if (attachment != null) { mp.addBodyPart(mbp2); } //System.out.println("Body text appended successfully"); // add the Multipart to the message msg.setContent(mp); // set the Date: header msg.setSentDate(new Date()); // send the message Transport.send(msg); System.out.println("Mail Send sucessfully"); } catch (Exception e) { //System.out.println("Exception occured at SendMail " + e); sent = false; throw new Exception("Exception occured at SendMail " + e); } return sent; } private class SMTPAuthenticator extends javax.mail.Authenticator { @Override public PasswordAuthentication getPasswordAuthentication() { return new PasswordAuthentication(mail_from, mail_pwd); } } }

DAO

FPDao.java
package com.fpwd.DAO; import java.sql.Connection; import java.sql.ResultSet; import java.sql.Statement; import java.util.HashMap; import java.util.MissingResourceException; import java.util.ResourceBundle; import com.fpwd.common.DBconnection; import com.fpwd.common.Datedifference; import com.fpwd.common.SendMail; import com.fpwd.util.Utility; public class FPDao { DBconnection dBconn; Statement stmt; SendMail mail; ResourceBundle bundle; public FPDao() throws MissingResourceException, NullPointerException { this.bundle = ResourceBundle.getBundle("com.fpwd.commonconfig\\DB"); } public HashMap<String , String> insertData(String emailId) throws Exception { HashMap<String , String> dataMap = new HashMap<String , String>(); Connection con = null; try { ResultSet rset; String token = Utility.getInstance().generateRandomToken(); dBconn = new DBconnection(); con = dBconn.getConnection(); stmt = con.createStatement(); rset = stmt .executeQuery("select * from Forgetpasslinktab where Fp_email='" + emailId + "'"); if (rset.next()) { int updatecount = stmt .executeUpdate("update Forgetpasslinktab set Fp_token='" + token + "',status='REQ',Fp_accessedtime='" + Utility.getInstance().getDate() + "' where Fp_email='" + emailId + "'"); if (updatecount >= 1) { mail = new SendMail(); Boolean b = mail.sendMail( emailId, null, "New Password for Account", Utility.getInstance().frameResetLink(token, bundle.getString("forgetpasswordlink"), emailId), null); if (b) { dataMap.put("RESULT", "SUCCESS"); dataMap.put("REASON", "Your password reset link is send to your registred Email id"); } else { dataMap.put("RESULT", "FAILURE"); dataMap.put("REASON", "Problem in resetting the password. Please try after sometime"); } } else { dataMap.put("RESULT", "FAILURE"); dataMap.put("REASON", "Unable to update in DataBase"); } } else { dataMap.put("RESULT", "FAILURE"); dataMap.put("REASON", "Email ID does not exist"); } } catch (Exception e) { dataMap.put("RESULT", "EXCEPTION"); dataMap.put("REASON", e.getMessage()); } finally { con.close(); } return dataMap; } public HashMap<String , String> insertData(String utid, String emailId, String newPassword) throws Exception { HashMap<String , String> dataMap = new HashMap<String , String>(); Connection con = null; try { dBconn = new DBconnection(); con = dBconn.getConnection(); stmt = con.createStatement(); int updatecount = stmt .executeUpdate("update Forgetpasslinktab set Fp_password='" + newPassword + "',status='CLOSE' where Fp_email='" + emailId + "' and Fp_token='" + utid + "'"); if (updatecount >= 1) { dataMap.put("RESULT", "SUCCESS"); dataMap.put("REASON", "Password changed successfully"); } else { dataMap.put("RESULT", "FAILURE"); dataMap.put("REASON", "Unable to change the password<br />Reason:- Invalid EmailId"); } } catch (Exception e) { dataMap.put("RESULT", "EXCEPTION"); dataMap.put("REASON", e.getMessage()); } finally { con.close(); } return dataMap; } public HashMap<String , String> verifyRequest(String utid, String emailId) throws Exception { HashMap<String , String> dataMap = new HashMap<String , String>(); Connection con = null; try { String accesstime = null; String status = null; ResultSet rset; dBconn = new DBconnection(); con = dBconn.getConnection(); stmt = con.createStatement(); rset = stmt .executeQuery("select Fp_accessedtime,status from Forgetpasslinktab where Fp_token='" + utid + "'and Fp_email='"+emailId+"'"); if (rset.next()) { accesstime = rset.getString("Fp_accessedtime"); status = rset.getString("status"); String statusmessage = new Datedifference().datevalidator( accesstime, Utility.getInstance().getDate()); if (statusmessage.equalsIgnoreCase("invalid") || status.equalsIgnoreCase("CLOSE") || status.equalsIgnoreCase("CANCEL")) { //System.out.println("in invalid block"); stmt.executeUpdate("update Forgetpasslinktab set status='CANCEL' where Fp_token='" + utid + "'and Fp_email='"+emailId+"'"); dataMap.put("RESULT", "FAILURE"); dataMap.put("REASON", "TIMEOUT"); } else { dataMap.put("RESULT", "SUCCESS"); dataMap.put("REASON", bundle.getString("redirectUrl")); } } else { dataMap.put("RESULT", "FAILURE"); dataMap.put("REASON", "INVALIDREQ"); } } catch (Exception e) { dataMap.put("RESULT", "EXCEPTION"); dataMap.put("REASON", e.getMessage()); } finally { con.close(); } return dataMap; } }

Utility Class

Utility.java
package com.fpwd.util; import java.text.SimpleDateFormat; import com.fpwd.common.AESEncryption; import com.fpwd.common.Base64Coder; /** * * @author Gaurav Pathak * */ /* * Utility class is Singleton */ public class Utility implements Cloneable { private static Utility instance; private Utility() { // no-ops } public static synchronized Utility getInstance() { if (instance == null) { instance = new Utility(); } return instance; } public String getDate() { String date = null; SimpleDateFormat df1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); date = df1.format(new java.util.Date()); return date; } public String generateRandomToken() { long timeSeed = System.nanoTime(); // to get the current date time value double randSeed = Math.random() * 1000; // random number generation long midSeed = (long) (timeSeed * randSeed); // mixing up the time and // rand number. String s = midSeed + ""; String subStr = s.substring(0, 8); return subStr; } public String frameResetLink(String utid, String resetUrl, String emailId) throws Exception { String encrypt_token = null; String encrypt_email = null; String sub_tok = null; String email_tok = null; /* * encrypt token value use AES encryption(Any encryption method can be * used) */ sub_tok = AESEncryption.encrypt(utid); /* * again encrypted using base64 encoding */ encrypt_token = Base64Coder.encodeString(sub_tok); /* * encrypt eamil value use AES encryption(Any encryption method can be * used) */ email_tok = AESEncryption.encrypt(emailId); /* * again encrypted using base64 encoding */ encrypt_email = Base64Coder.encodeString(email_tok); // creating Reset Link String resetlink = resetUrl + "?USERID=" + encrypt_email + "&UTID=" + encrypt_token; String link = " Dear Customer:-" + "\n Please follow the link to reset password\n" + resetlink + ""; return link; } public String decryptData(String encryptedData) throws Exception { String decrypteddata = null; try { decrypteddata = AESEncryption.decrypt(Base64Coder .decodeString(encryptedData)); } catch (Exception e) { throw new Exception( "Error while authenticating user data<br>'Invalid Request found'"); } return decrypteddata; } @Override protected Object clone() throws CloneNotSupportedException { throw new CloneNotSupportedException(this.getClass().getSimpleName() + " probhited Cloning"); } }

Properties files

DB.properties
# Database driver class FOR SQL SERVER driver=com.microsoft.sqlserver.jdbc.SQLServerDriver #LOCAL DEVP PROPERITES url=jdbc:sqlserver://youripaddress;databaseName=Database;SelectMethod=Cursor;user=test;password=test#! #forgetpassword using link properties forgetpasswordlink=http://youripaddress:port/GP_ForgetPassword/Authenticate redirectUrl=http://youripaddress:port/GP_ForgetPassword/SetNewPassword.jsp #AES secret key must be of length 16. secretkeyforpass=gauravpathak1443 expiredhour=1 expiredmin=0 expiredsec=0 expireddays=1
mail-config.properties
#Author:Gaurav Pathak # properties used for sending mail #mail-from=Sender email address #mail-pwd=Sender password #host= Mention Hostname #port= Mention your port number here #authtype=true #key=mail

To get full code just click on the link
click to get
Please give your feedback by giving comments

26 comments:

dpk7 May 2013 at 00:59
goood work bro...!! Keep it going..>!!
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Anonymous23 December 2013 at 21:34
Dear Gaurav,

Thanx for sharing a valueable code...
i hv a little prblm wid my Task manager...its nt enable in my lappy...if u hv knowledge abt it...so plz share wid me..

Abhishek
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Unknown23 December 2013 at 22:53
@abhishek: i think it might be because of viruses in your system.
Once u chk registry editor, n chk or locate "disabletaskmgr".
U hav to ckh fr dword value . Change it to '0' or create a new value, if its nt there.
Restart ur system once.
I think it will work.

Gaurav
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Unknown22 September 2014 at 00:35
I am enable to download Code... I have given Request Access (permission) for downloading.. Help me to download it.
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Neelakandan Chandrasekaran10 June 2015 at 20:49
i am working with your forgot password code, but its giving me internal error occured, please try later, reason = null, i am a beginer could you help me to fix it
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Unknown30 June 2015 at 03:06
I am getting an error :-

Reason:-Can't find bundle for base name /DB.properties, locale en_GB.

Please help to resolve.
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Unknown5 July 2015 at 21:39
I am getting an error :- Reason:Null
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Unknown26 July 2015 at 11:24
hi guys apologies for the late reply..
you can download the whole code from link mentioned in the my blog (click here to get link) at the end.
Make sure of changing Db urls and mail properties.Configure them properly as per your details.
The code is written to send and validate your password link based on these inputs.
For better understanding I encouraged all to write logs or sout statement to see code flow.
Thank you for showing your interest and your valuable feedback.
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Unknown4 August 2015 at 21:19
thanks for the post gaurav,but the authenticate java class is giving a null pointer ,how to fix it ,got stuck with this code
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Unknown6 August 2015 at 01:12
Yes Gaurav I have fixed the error.There was a space coming in the link on the respective mail id and hence the value was not getting returned to the jsp.I have removed the space in the link and the rest of the code is working fine.
Thank you for the great post Gaurav. In case I need any further help will definitely contact you.

Regards,
Saptarshi
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Unknown8 August 2015 at 10:15
gaurav, a new problem has arrived again, The code was working fine ,but it is not accepting a new gmail id and password.
Every time it is giving a error of javax mail.authenticatin error , username and password are not accepted .
it was working fine until i chnaged my password for the gmail account and now its throwing the same error.how to fix it ???

neeed help from you
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Unknown8 August 2015 at 10:15
gaurav, a new problem has arrived again, The code was working fine ,but it is not accepting a new gmail id and password.
Every time it is giving a error of javax mail.authenticatin error , username and password are not accepted .
it was working fine until i chnaged my password for the gmail account and now its throwing the same error.how to fix it ???

neeed help from you
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Unknown15 September 2015 at 00:13
hi Gaurav i need to know the overall db structure and scenerio how the coding works , I am a fresher in IT Industry...Can u Revert back to my mail shannushyl@gmail.com
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Unknown29 October 2015 at 07:54
Hi Gaurav,
I am getting following exception
the transport.connect() method throws exception
com.sun.mail.util.MailConnectException: Couldn't connect to host, port: localhost, 25; timeout -1;
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Unknown29 October 2015 at 08:02
==================================================================================
props.put("mail.smtp.host", host);
props.put("mail.smtp.port", port);
props.put("mail.smtp.username", mail_from);
props.put("mail.smtp.password", mail_pwd);
props.put("mail.smtp.auth", authtype);
props.put("mail.smtp.debug", "true");
props.put("mail.transport.protocol", "smtp");
/* props.put("mail.smtp.starttls.enable","false"); // if it is true then it enabling SSL on this connection
props.put("mail.smtp.socketFactory.port", port);
props.put("mail.smtp.socketFactory.class", "javax.net.ssl.SSLSocketFactory");
props.put("mail.smtp.socketFactory.fallback", "false"); //false
*/

Session session = Session.getInstance(prop, new Authenticator() {
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(mail_from,mail_pwd);
}
});
==============================================================================

// send the message
int intport=Integer.parseInt(port);
Transport transport = session.getTransport("smtp");
transport.connect(host, intport, mail_from, mail_pwd);
Transport.send(msg); // This line throws Exception
System.out.println("Mail Send sucessfully");
==================================================================================
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Rakesh Singh23 January 2017 at 13:18
This comment has been removed by the author.
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Rakesh Singh23 January 2017 at 13:20
Hello sir, when i am working with your forgot password code, but its giving me internal Exception occured, please try later, reason = null, i am a beginer could you help me to fix it.
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Unknown22 April 2017 at 01:32
hello sir,im trying to run your sample project but "encounted error Internal Exception Occured! Please try Later
Reason:-null", i already set up to all configuration but have error.
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Unknown22 April 2017 at 01:32
This comment has been removed by the author.
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Unknown22 April 2017 at 01:32
hello sir,im trying to run your sample project but "encounted error Internal Exception Occured! Please try Later
Reason:-null", i already set up to all configuration but have error.
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Sonam Phuntsho12 February 2022 at 08:58
grt
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