Results 1 to 3 of 3
  1. 06-11-2012, 12:42 AM #1
    proksy
    proksy is offline Member
    Join Date
    Jun 2012
    Posts
    7
    Rep Power
    0

    Question Login Authentication Using Bean and Servlet in JSP

    I am going through a tutorial I found on roseindia.net, which can be found here login Authentication using Bean and Servlet In JSP following the tutorial I found there was a small syntax error in the file loginbean.jsp causing the error:

    org.apache.jasper.JasperException: /jspbeanlogin/loginbean.jsp(9,57) Attribute value request.getParameter("userName") is quoted with " which must be escaped when used within the value
    org.apache.jasper.compiler.DefaultErrorHandler.jsp Error(DefaultErrorHandler.java:40)

    to be thrown. I have replaced the double quotes with single quotes and have resolved this syntax issue. I have now run into another problem. The loginbean.jsp is throwing the error:

    org.apache.jasper.JasperException: /jspbeanlogin/loginbean.jsp(7,0) The value for the useBean class attribute logbean.LoginBean is invalid.

    I have recompiled the LoginBean.java file a few different times in both the /WEB-INF/classes and /WEB-INF/classes/logbean folders and am still having this error. Here is the contents of my loginbean.jsp file which is throwing the error:

    Java Code: 
    <HTML>   
<HEAD><TITLE>DataBase Search</TITLE></HEAD>  
<BODY>

<%@ page language="Java" import="java.sql.*" %>  

<jsp:useBean id="db" scope="request" class="logbean.LoginBean" >

<jsp:setProperty name="db" property="userName" 
    value='<%=request.getParameter("userName")%>'/>
<jsp:setProperty name="db" property="password" 
    value='<%=request.getParameter("password")%>'/>

  </jsp:useBean>
<jsp:forward page="hello">
<jsp:param name="username" value='<%=db.getUserName()%>' />
<jsp:param name="password" value='<%=db.getPassword()%>' />

</jsp:forward> 


</body>
</html>
    and here is the contents of the JavaBean.java file the javabean.jsp file is trying to resolve:

    Java Code: 
    package logbean;  
//<---I have commented this out and recompiled outside of the logbean folder 
// and changed class="logbean.LoginBean" to class="LoginBean" with no success
public class LoginBean {
         
        String userName="";
	    String password="";

        public String getUserName() {
            return userName;
        }
        public void setUserName(String userName) {
            this.userName = userName;
        }
    
        public String getPassword() {
            return password;
        }
        public void setPassword(String password) {
            this.password = password;
        }
    }
    Thank you all so much for the help with this. I am ready to have fun with this stuff
    Last edited by proksy; 06-11-2012 at 12:45 AM.
    Reply With Quote Reply With Quote
  2. 06-11-2012, 02:40 AM #2
    proksy
    proksy is offline Member
    Join Date
    Jun 2012
    Posts
    7
    Rep Power
    0

    Default Re: Login Authentication Using Bean and Servlet in JSP

    I have been told from a reputable professional that this tutorial or example is of poor quality and is terribly outdated. I guess this thread can be deleted as I am abandoning this tutorial and will do some more reading on jsp and servlets before attempting another post. Thanks
    Reply With Quote Reply With Quote
  3. 06-11-2012, 03:00 AM #3
    Fubarable's Avatar
    Fubarable
    Fubarable is offline Moderator
    Join Date
    Jun 2008
    Posts
    19,252
    Blog Entries
    1
    Rep Power
    24

    Default Re: Login Authentication Using Bean and Servlet in JSP

    I have noticed that your tutorial link was to roseindia, and yes, that site has a reputation for spotty quality. Please read BalusC blog on the site: What is it with RoseIdia for a little more detail on this.
    How to use Code Tags
    How to Ask Smart Questions
    The Short, Self Contained, Correct (Compilable), Example or SSCCE
    So, You Need to Write a Program but Don't Know How to Start
    Reply With Quote Reply With Quote
« hi need some advice | calling EJB method »

Similar Threads

  1. javax.servlet.jsp.JspException: Cannot find bean org.apache.struts.taglib.html.BEAN i
    By gurpreet.singh in forum Advanced Java
    Replies: 1
    Last Post: 03-23-2011, 07:55 AM
  2. Single user Login authentication
    By vinoopraj in forum Web Frameworks
    Replies: 0
    Last Post: 07-20-2010, 08:19 AM
  3. Program to validate a user against LDAP for login Authentication
    By syntel in forum Java Servlet
    Replies: 2
    Last Post: 05-18-2010, 03:12 PM
  4. Biometric Thumb Impression Authentication for login in jsp
    By kishore rajkumar in forum JavaServer Pages (JSP) and JSTL
    Replies: 1
    Last Post: 08-12-2009, 02:30 PM
  5. Proxy Authentication - Cannot login as multiple users
    By Dikla in forum Advanced Java
    Replies: 1
    Last Post: 08-05-2008, 10:18 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules