Home Discussion Discuss: JSP Login Form with MySQL Database Connection and back end validation

  • problem in login.jsp filepriyanka January 6, 2014 at 11:04 PM

    HTTP Status 500 - An exception occurred processing JSP page /login.jsp at line 56 -------------------------------------------------------------------------------- type Exception report message An exception occurred processing JSP page /login.jsp at line 56 description The server encountered an internal error that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: An exception occurred processing JSP page /login.jsp at line 56 53: 54: 55: 56: if((!(name.equals(null) || name.equals("")) && !(password.equals(null) || 57: password.equals(""))) && !usertype.equals("select")) 58: 59: { Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) root cause java.lang.NullPointerException org.apache.jsp.login_jsp._jspService(login_jsp.java:122) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.35 logs. -------------------------------------------------------------------------------- Apache Tomcat/7.0.35

  • problempriynka January 6, 2014 at 11:07 PM

    i use mysql as back end nd when i run this code then i get this error as under =================================== HTTP Status 500 - An exception occurred processing JSP page /login.jsp at line 56 -------------------------------------------------------------------------------- type Exception report message An exception occurred processing JSP page /login.jsp at line 56 description The server encountered an internal error that prevented it from fulfilling this request. exception org.apache.jasper.JasperException: An exception occurred processing JSP page /login.jsp at line 56 53: 54: 55: 56: if((!(name.equals(null) || name.equals("")) && !(password.equals(null) || 57: password.equals(""))) && !usertype.equals("select")) 58: 59: { Stacktrace: org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:568) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:470) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) root cause java.lang.NullPointerException org.apache.jsp.login_jsp._jspService(login_jsp.java:122) org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334) javax.servlet.http.HttpServlet.service(HttpServlet.java:728) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.35 logs. -------------------------------------------------------------------------------- Apache Tomcat/7.0.35

  • Null Value insert into databaseShridip chandole March 1, 2014 at 11:35 PM

    I have done login page and registration page but when i click to registration on anker tag of login page then it automatic insert null value in data base why?Following 2 pages in jsp Login.jsp <form id="form1" name="form1" method="post" action="Login.jsp" onsubmit="return check()"> <table> <tr> <td><label>Enter Email-id</label></td> <td><input name="user" type="text" onBlur="uservalid();" id="uname"/></td> <td><label id="usr"></label></td> </tr> <tr> <td><label>Enter Password</label></td> <td><input name="password" type="password" id='pwd' onBlur="passvalid();"/></td> <td><label id="pass"></label></td> </tr> <tr> <td><input type="submit" name="Submit" value="Submit" /></td> </tr> <tr><td>&nbsp;</td><td>Register for new User <a href="Registration.jsp">click here</a></td></tr> </table> Registration.jsp <%@page import="java.sql.*,java.util.*" language="java" %> <%@page import="java.awt.*,javax.swing.*" %> <% Connection con=null; Statement stmt=null; ResultSet rs=null; String fname=request.getParameter("fname"); String lname=request.getParameter("lname"); String user=request.getParameter("user"); try { Class.forName("com.mysql.jdbc.Driver"); con=DriverManager.getConnection("jdbc:mysql://localhost/loginuser","root","SIBM"); stmt=con.createStatement(); stmt.executeUpdate("insert into admininfo(fname,lname,user,pass,pass1,mob,gender,dob) values('"+fname+"','"+lname+"','"+user+"','"+request.getParameter("password")+"','"+request.getParameter("password")+"','"+request.getParameter("mobile")+"','"+request.getParameter("gender1")+"','')"); JOptionPane.showMessageDialog(null, "Registration Success"); } catch (SQLException e) { // TODO: handle exception e.printStackTrace(); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); }

  • thanks alotsihem June 14, 2014 at 12:18 AM

    thank you for this tutorial

  • thanks alotsihem June 14, 2014 at 12:18 AM

    thank you for this tutorial

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