How To Display Error Message In Jsp Using Servlet
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Servlet Redirect To Same Page With Error Message
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How To Display Alert Message In Servlet
you, helping each other. Join them; it only takes a minute: Sign up how to message from servlet and display in jsp up vote 7 down vote favorite 3 I'm trying to do something that looks small
How To Display Error Message In Jsp Using Javascript
but it's failing. I'm trying to send a response message back to a jsp when login fails but not being able. As of now I can only redirect back to the jsp but cannot display a message from the servlet on it. This is the servlet part of the redirection: if (count > 0) { res.sendRedirect("adminHome.jsp"); } else { res.sendRedirect("index.jsp"); } I tried to print a message using PrintWriter and the redirect but failed because how to display message in jsp page I couldn't get how to receive the message in the JSP. I also read that I shouldn't redirect but rather I should just forward from the servlet. How can I do this? Please help with the code patch to forward from servlet as well as that one to receive in JSP. Thanks jsp servlets share|improve this question asked May 18 '11 at 16:40 ken 50125 Never ever use response.getWriter() or getOutputStream() in servlet whenever you use forward/redirect. You will risk IllegalStateExceptions. –BalusC May 18 '11 at 16:52 add a comment| 3 Answers 3 active oldest votes up vote 24 down vote accepted If you insist to use redirect instead of forward, then you have 2 options: Pass the message as request parameter String message = "hello"; res.sendRedirect("adminHome.jsp?message=" + URLEncoder.encode(message, "UTF-8")); so that you can display it in JSP as follows
Message: ${param.message}
It's only visible in the browser address bar as well and you aren't able to pass non-standard Java objects this way. Store it in session String message = "hello"; req.getSession().setAttribute("message", message); res.sendRedirect("adminHome.jsp"); so that you can display (and remove) it in JSP as follows:Message: ${message}
here 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 the company Business Learn more about hiring developers or how to show alert message in jsp posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss how to send message from servlet to jsp Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only how to send alert message from servlet to jsp takes a minute: Sign up Servlet redirect to same page with error message up vote 11 down vote favorite 11 I have a question about servlet redirection to the same initial page. The following is the scenario: Suppose a user http://stackoverflow.com/questions/6048102/how-to-message-from-servlet-and-display-in-jsp want to buy an item, so he fills in the amount and submits it. The form is submitted to a servlet and the quantity available is checked against the available in the database. So if the amount of items ordered is more than the available the servlet redirects to the same page but with a message like "item is unavailable". So my question is how to implement this case. How to redirect to the same initial page with an error message. http://stackoverflow.com/questions/14632252/servlet-redirect-to-same-page-with-error-message I don't want to use ajax here. Here is how I have thought of it as : 1.)should I set a context attribute if error is generated and then check it again in initial page after re-direction and show the message that has been set. What are the best practices for this kind of events? java jsp servlets redirect scope share|improve this question edited Jun 9 '14 at 17:37 informatik01 9,29763759 asked Jan 31 '13 at 18:04 Vishal Anand 2412819 Put your mouse on top of [servlets] tag which you placed on the question until a black box shows up and then click therein the info link. This issue is covered for long by the first Hello World example. –BalusC Feb 1 '13 at 14:01 add a comment| 1 Answer 1 active oldest votes up vote 31 down vote accepted The most common and recommended scenario (for the server side validation in Java serlvets/JSP world) is setting some error message as a request attribute (in the request scope) and then outputting this message in a JSP using Expression Language (see the example below). When the error message is not set - nothing will be shown. But when storing an error message in a request, you should forward a request to the initial page. Setting a request attribute is not suitable when redirecting, because if you use a redirect it will be a totally NEW request and request attributes
This Site Careers Other all forums Forum: Servlets How i will display error details in the same jsp page https://coderanch.com/t/414131/Servlets/java/display-error-details-jsp-page sumanta panda Ranch Hand Posts: 224 posted 7 years ago 1 Dear All, I have a jsp page let say login.jsp and a servlet class http://www.dreamincode.net/forums/topic/32624-servlet-jsp-error-passing/ 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 how to display same message in jsp.Example once submitting of 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"); message in jsp 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 = out.get("4").toString(); System.out.println("errorType...->"+errorType); System.out.println("errorDesc...->"+errorDesc); //newpasswordVector = (Vector)out.get("4"); } //EnquiryLog.l(strUserId+"|"+strTerminal+" NewPasswordServlet: :mrgreen: B call with queryStr="+queryStr+" Result:"+newpasswordVector); } [BPSouther: Added code tags] [ December 08, 2008: Message edited by: Ben Souther ] sudipto shekhar Ranch Hand Posts: 826 I like... posted 7 years ago I think including a jsp page at the desired position using the
1 Replies - 4000 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 P