bean problem

sandi · April 4th, 2005, 01:32 PM

hi friends
i am very young to JSP and to the p2p community. itried a basic bean but got the error "org.apache.jasper.JasperException: /sandipan1/add.jsp(2,0) The value for the useBean class attribute student.javaprogram.RegistrationBean is invalid."

i compile the RegistrationBean.java sucessfully.JAVA_HOME is properly set in my computer.
[u]my JSP page is</u>
<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="java.sql.*" errorPage="" %>
<jsp:useBean id="admition" class="student.javaprogram.RegistrationBean" scope="session" />"
<html>
<head>
<title>add student</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<jsp:setProperty name="admition" property ="studentid" value="<%=request.getParameter("studentid") %>" />
<jsp:setProperty name="admition" property="rollnumber" value="<%=request.getParameter("rollnumber") %>" />
<jsp:setProperty name="admition" property="stream" value="<%=request.getParameter("stream") %>" />

<body>

<% admition.insert_data(); %>

<h3>a new student is registered</h3>
</body>
</html>

[u]and my java program is</u>

package student.javaprogram;

import java.sql.*;
import java.io.*;
import javax.sql.*;
import java.util.*;

public class RegistrationBean {
    private String studentid;
    private String rollnumber;
    private String stream;

    public void setStudentid( String studentid) {
        this.studentid=studentid;
    }
    public void setRollnumber(String rollnumber) {
        this.rollnumber=rollnumber;
    }
    public void setStream(String stream) {
        this.stream=stream;
    }
    public String getStudentid() {
        return studentid;
    }
    public String getRollnumber() {
        return rollnumber;
    }
    public String getStream() {
        return stream;
    }
    public void insert_data()
    {
        try{
            Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
            Connection con=DriverManager.getConnection("jdbc:odbc:testdsn ","scott","tiger");
            PreparedStatement ps=con.prepareStatement("insert into SANDIPAN VALUES(?,?,?)");
            ps.setString(1,studentid);
            ps.setString(2,rollnumber);
            ps.setString(3,stream);
            ps.executeUpdate();

            }
            catch(Exception e){System.out.println(e.toString());
            }
    }

}

so friend please help me out. DSN is ok and working fine.

thanks in advans.

regards
sandi

DR POMPEII · April 4th, 2005, 05:07 PM

Hi sandy

property ="studentid"
property="rollnumber"
property="stream"

is the way to call the set methods (setstudentid), well each property start with not uppercase, but your java code start withuppercase

i saw this common error, the obvious answer is change your property with uppercase, but some times dont work, strange for me!

so,the answer is to change your set methods in your java file to no uppercase

setStudentid by setstudentid
setRollnumber by setrollnumber
setStream by setstream

if i dont remember try to not use the same names to the variables and methods

i hope that my help can resolve your problem

sandi · April 5th, 2005, 01:02 PM

hi Dr.
thanks buddy for your suggestion. i do what u suggested but it won't work. i am in a big mess here.

sandi

DR POMPEII · April 5th, 2005, 01:22 PM

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DR POMPEII, THE PLACE OF THE OBLIVION OF GOD