How To Display Error Message In Jsp From Servlet
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How To Show Error Message In Jsp
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How To Display Error Message In Jsp Using Javascript
Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up displaying error message in login page after login failure up vote 1 down vote favorite 2 here is some part of code from
How To Display Message In Jsp Page
login.jsp login.jsp
Login
<%=request.getAttribute("errorMessage") %>
in the servlet code if the user does't exist i'm using requestdispatcher with error msg servlet if(res.next()) { if ((thisname.equals(res.getString("username"))) && (thispwd.equals(res.getString("password")))) { session.setAttribute("username", request.getParameter("username")); response.sendRedirect("login-success.html"); } else{ session.invalidate(); request.setAttribute("errorMessage", "Invalid user or password"); RequestDispatcher rd = request.getRequestDispatcher("/login.jsp"); rd.forward(request, response); } but thing is<%=request.getAttribute("errorMessage") %>
runs whenever login jsp is opened which returns null on the page when there is no failure.only when the failure occurs it displays "invalid user or password" .so i want to check if request.getAttribute("errorMessage") is null . is its not then invoke<%=request.getAttribute("errorMessage") %>
. how do i do it? or is there a better way jsp servlets share|improve this question askedhere for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow how to send message from servlet to jsp the company Business Learn more about hiring developers or posting ads with us Stack
How To Show Alert Message In Jsp
Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of how to send alert message from servlet to jsp 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to send error message from servlet to jsp page? up vote 1 down vote favorite My http://stackoverflow.com/questions/21903765/displaying-error-message-in-login-page-after-login-failure jsp page consists of a form that takes in an email address. I then use java to check if my postgresql database already contains that email address. Right now my servlet just redirects the user back to the Registration page if the email address already exists. What I am trying to do is write an error message on the form "The email address you entered already exists" with java. I haven't figured http://stackoverflow.com/questions/31757418/how-to-send-error-message-from-servlet-to-jsp-page out how to do it. Is there some way I could do this with jQuery form validation? I am using that right now for required fields. java postgresql servlets error-handling jquery-form-validator share|improve this question edited Aug 1 '15 at 5:38 John 1,83211540 asked Aug 1 '15 at 1:47 Dylan 8210 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote accepted Here you need to pass information from servlet to JSP. To Pass parameter from servlet to JSP or vice versa. Use Session to pass value from one page to another (here). In Servlet request.getSession().setAttribute("email", "exist/notexist"); In JSP Make a blank div just beside the email textbox and set its content based on the value of String s1 which is set from session.getAttribute("key") method. <%! String s1 = ""; %> <% s1 = (String) session.getAttribute("email");%> <% if(s1.equals("exist")){ %>
This Site Careers Other all forums https://coderanch.com/t/414131/Servlets/java/display-error-details-jsp-page Forum: Servlets How i will display error details in the same jsp page sumanta panda Ranch Hand http://www.dreamincode.net/forums/topic/32624-servlet-jsp-error-passing/ Posts: 224 posted 7 years ago 1 Dear All, I have a jsp page let say login.jsp and how to a servlet class Login Servlet.java. My doubt is when request goes to servlet and servlet class do all database validation.if let say login id is invalid how can i display same message in jsp.Example once submitting of message in jsp userid and password if user is wrong then it will in same jsp page "Invalid User id". Could you please guide me how i will write the code in servlet as well as jsp page. My servlet class is try { requesttype=request.getParameter("rPass"); userid=request.getParameter("txtUserId"); dateofbirth=request.getParameter("DateofBirth"); emailid=request.getParameter("txtMail"); bankaccno=request.getParameter("txtBankAcc"); HashMap values = new HashMap(); String procString="PR_ITS_CUSTOMER_AUTH (?,?,?,?)"; values.put("1",userid); values.put("2",dateofbirth); values.put("3","Types.VARCHAR"); values.put("4","Types.VARCHAR"); //EnquiryLog.l(strUserId+"|"+strTerminal+" NewPasswordServlet :: Values="+values); System.out.println(userid+"|"+dateofbirth+"NewPasswordServlet :: Values="+values); HashMap out = new HashMap(); validLogindata = false; strRespLogin ="You have entered wrong existing login password."; //if(ConnectionPool.interactiveConnectionPool!=null) dbCon = new OracleDbConnector(ConnectionPool.interactiveConnectionPool); if(dbCon!=null) { //dbCon = new OracleDbConnector(ConnectionPool.interactiveConnectionPool); out = dbCon.CallStatementForProc(procString,values); System.out.println("procString---->"+procString); System.out.println("dbCon...->"+dbCon); System.out.println("out---->"+out); if(out!=null) { //queryStr = (String) out.get("3"); errorType = out.get("3").toString(); errorDesc
1 Replies - 4002 Views - Last Post: 03 September 2007 - 06:36 AM Rate Topic: #1 phantom2850 New D.I.C Head Reputation: 0 Posts: 8 Joined: 09-May 07 SERVLET-JSP error passing Posted 03 September 2007 - 01:51 AM friends, I have a login index.jsp page, which accepts username and password , there is also PassVerifyServlet which handles the password verification process.. In PassVerifyServlet , if the username and password match, then I forward it to login success html page... if the username and password donot match, I want to pass a error message back to login index.jsp saying "invalid password"... This is where I am struck... I tried creating err attribute and passing it to login JSP page, but retrieve the err attribute in JSP and displaying is giving error, because err attribute yet to be created during the initial/first login... Login Page - index.jsp <[emailprotected] contentType="text/html"%> <[emailprotected] pageEncoding="UTF-8"%> <%-- The taglib directive below imports the JSTL library. If you uncomment it, you must also add the JSTL library to the project. The Add Library... action on Libraries node in Projects view can be used to add the JSTL 1.1 library. --%> <%-- <[emailprotected] uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> --%>
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<%=request.attribute.errmsg%> Servlet Verifying the Password - PassVerifyServlet /* * PassVerifyServlet.java * * Created on September 3, 2007, 1:02 PM */ import java.io.*; import java.net.*; import javax.servlet.*; import javax.servlet.http.*; import java.util.*; public class PassVerifyServlet extends HttpServlet { protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { LinkedList err = new LinkedList(); response.setContentType("text/html;charset=UTF-8"); String name = request.getParameter("txtUsername"); String pass = request.getParameter("txtPassword