Code:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<style type="text/css">
<!--
body {
margin-left: 0px;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
background-color: #FFFF66;
}
-->
</style></head>
<%@ page import="java.sql.*;"%>
<jsp:useBean id="obj" class="p1.DBInfo"/>
<body>
<center>
<%
String s1=request.getParameter("fname");
String s2=request.getParameter("pass");
int i=obj.checkLogin(s1, s2);
if(i==1)
{
response.sendRedirect("admin.jsp");
}
if(i==2)
{
%>
<jsp:forward page="faculty.jsp" />
<%
}
if(i==3)
{
response.sendRedirect("student.jsp");
}
if(i==0)
{
%>
<font color="Red">Invalid username or password!</font>
<jsp:include page="Login.html" />
<%
}
%>
</center>
</body>
</html>
Code:
package p1;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
public class DBInfo
{
static Connection con=null;
static
{
//Drivers
try
{
Class.forName("com.mysql.jdbc.Driver");
System.out.println("Driver loaded");
}
catch (ClassNotFoundException e)
{
e.printStackTrace();
}
System.out.println("Driver loaded");
}
public static Connection getConnection()
{
String url="jdbc:mysql://localhost:3306/collegedb";
String username="root";
String password="rat";
try
{
con=DriverManager.getConnection(url,username,password);
System.out.println("Connection established:"+con);
}
catch (SQLException e)
{
e.printStackTrace();
}
return con;
}
public static void close()
{
try
{
con.close();
}
catch (SQLException e)
{
e.printStackTrace();
}
}
public int checkLogin(String s1,String s2)
{
int flag=0;
int value=0;
String usertype="";
getConnection();
try
{
String query="select * from login where username=? and password=?";
PreparedStatement ps=con.prepareStatement(query);
ps.setString(1,s1);
ps.setString(2,s2);
ResultSet res=ps.executeQuery();
while(res.next())
{
flag=1;
usertype=res.getString(4);
break;
}
if(flag==1 && usertype.equalsIgnoreCase("admin"))
{
value=1;
}
if(flag==1 && usertype.equalsIgnoreCase("faculty"))
{
value=2;
}
if(flag==1 && usertype.equalsIgnoreCase("student"))
{
value=3;
}
if(flag==1 && usertype.equalsIgnoreCase("other"))
{
value=4;
}
if(flag==0)
{
value=0;
}
}
catch(Exception e)
{
e.printStackTrace();
}
return value;
}
}
Code:
type Exception report
message org.apache.jasper.JasperException: Unable to compile class for JSP
description The server encountered an internal error that prevented it from fulfilling this request.
exception
org.apache.jasper.JasperException: org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:555)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:384)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:600)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:363)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.lang.IllegalArgumentException: Page directive: invalid value for import
org.apache.jasper.compiler.Node$PageDirective.validateImport(Node.java:610)
org.apache.jasper.compiler.Node$PageDirective.addImport(Node.java:591)
org.apache.jasper.compiler.Parser.parsePageDirective(Parser.java:344)
org.apache.jasper.compiler.Parser.parseDirective(Parser.java:458)
org.apache.jasper.compiler.Parser.parseFileDirectives(Parser.java:1782)
org.apache.jasper.compiler.Parser.parse(Parser.java:136)
org.apache.jasper.compiler.ParserController.doParse(ParserController.java:227)
org.apache.jasper.compiler.ParserController.parseDirectives(ParserController.java:117)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:194)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:356)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:336)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:323)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:585)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:363)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.22 logs.
