Jsp Login Error
Contents |
here for a quick overview of the site Help Center Detailed answers jsp error page to any questions you might have Meta Discuss the workings
Jsp Error Handling
and policies of this site About Us Learn more about Stack Overflow the company Business
Runtime Error In Jsp
Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack
Problems With Jsp
Overflow Community Stack Overflow is a community of 6.2 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 login.jsp how to show error message in 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 asked Feb 20 '14here 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 servlet redirect to same page with error message Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs how to display error message in jsp using javascript Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just how to display error message in login page using jsp like you, helping each other. Join them; it only takes a minute: Sign up How to display login error message at login.jsp page using Spring Security? up vote 0 down vote favorite I am using Spring Security. http://stackoverflow.com/questions/21903765/displaying-error-message-in-login-page-after-login-failure I want to display login error message on login.jsp such as login failed or account locked. How can I display such message on login page ? java jsp error-handling spring-security share|improve this question edited May 6 '12 at 3:35 WATTO Studios 7,216103145 asked May 26 '11 at 13:14 Raje 1,67393653 You used Spring security ? –Jigar Joshi May 26 '11 at 13:21 @Jigar: yes , i m using spring security. In http://stackoverflow.com/questions/6139083/how-to-display-login-error-message-at-login-jsp-page-using-spring-security my application authentication is done through ldap. i want to display login fail, account locked message from message.properties file. for this i have write down AuthenticationFailureBadCredentialsEvent, so in this event i m incrementing counter in database. after incrementing counter i want read error message from properties files and display this message on login page. how can i display such message? –Raje May 26 '11 at 13:48 add a comment| 1 Answer 1 active oldest votes up vote 3 down vote accepted Just configure authentication-failure-url to a Servlet and set an attribute from that servlet like request.setAttribute("errorMessage",putYourMessageHere); and forward this request to login page. Or provide authentication-failure-url as login.jsp?authValid=false check for the param on jsp ${param.authFailed} and print the message conditionally share|improve this answer edited May 26 '11 at 14:06 answered May 26 '11 at 13:53 Jigar Joshi 160k27266332 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Not the answer you're looking for? Browse other questions tagged java jsp error-handling spring-security or ask your own question. asked 5 years ago viewed 4314 times active 4
Certification Databases Caching Books Engineering Languages Frameworks Products This https://coderanch.com/t/477338/Servlets/java/show-Error-message-login-jsp Site Careers Other all forums Forum: Servlets To show the Error message at the login.jsp page using servlet Shivoham Pandey Greenhorn Posts: https://docs.oracle.com/cd/E19316-01/819-3669/bncby/index.html 1 posted 6 years ago Hi folks I am doing a project for which i need to display the error message to error message the same login.jsp page using servlet.Error messages should be of there types: For invalid username:invalid user name For invalid password:Invalid password For Invalid username or password:user details are not found in database I am doing these validation against MS-Access Database. I have written a code which error message in is giving only one type of error: Thats :For Invalid username or password:user details are not found in database. Please help me out.Thanks in Advance package com.Demo.Servlet_EmployeeProject; import java.io.*; import javax.servlet.*; import javax.servlet.http.*; import java.sql.*; public class LoginEmployee extends HttpServlet{ public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException{ //response.setContentType("text/html"); // PrintWriter out = response.getWriter(); System.out.println("MySQL Connect Example."); Connection conn = null; String url = "jdbc:odbc:Employee"; String driver = "sun.jdbc.odbc.JdbcOdbcDriver"; String username=request.getParameter("username"); String userpass=request.getParameter("password"); String strQuery= ""; Statement st=null; ResultSet rs=null; HttpSession session = request.getSession(false); try { Class.forName(driver).newInstance(); conn = DriverManager.getConnection(url); System.out.println(userpass); strQuery="select * from Employee"+" where uid="+username+" and password='"+userpass+"'"; System.out.println(strQuery); // PreparedStatement ps = conn.prepareStatement("select * from Employee"+" where uid='"+username+"' and password='"+userpass+"'"); // rs = ps.executeQuery(); st = conn.createStatement(); rs = st.executeQuery(strQuery); int count=0; while(rs.next()) { session.setAttribute("username",rs.getString(1)); session.setAttribute("password",rs.getString(2)); session.setAttribute("aid",rs.getString(3)); session.setAttribute("fname",rs.getString(4)); session.setAttribute("lname",rs.getString(5)); session.setAttribute("display",rs.getString(6)); session.setAttribute("design",rs.getString(7)); session.setAttribute("
Security Requirements for Web ApplicationsNext: Example: Basic Authentication with a ServletExample: Using Form-Based Authentication with a JSP Page This example discusses how to use form-based authentication with a basic JSP page. With form-based authentication, you can customize the login screen and error pages that are presented to the web client for authentication of their user name and password. When a user submits their name and password, the server determines if the user name and password are those of an authorized user and, if authorized, sends the requested web resource. If the topic of authentication is new to you, please refer to the section Specifying an Authentication Mechanism. In general, the following steps are necessary for adding form-based authentication to an unsecured JSP page, such as the one described in Web Modules. In the example application included with this tutorial, many of these steps have been completed for you and are listed here simply to show what needs to be done should you wish to create a similar application. The completed version of this example application can be found in the directory tut-install/javaeetutorial5/examples/web/hello1_formauth/. The following steps describe how to set up your system for running the example applications, describe the sample application, and provide the steps for compiling, packaging, deploying, and testing the example application. If you have not already done so, set up your system so that the Ant tool and/or NetBeans IDE will run properly. To do this, follow the instructions in Building the Examples. This step is necessary to set the properties that are specific to your installation of the Application Server and Java EE 5 Tutorial. If you have not already done so, add an authorized user to the Application Server. For this example, add users to the file realm of the Application Server and assign the user to the group user. This topic is discussed more in Adding Authorized Roles and Users. Create a web module as described in Web Modules. The subsequent steps discuss adding security to this basic application. The resulting application is found in the directory tut-install/javaeetutorial5/examples/web/hello1_formauth/. Create the lo