Question everyone!!!!!!
Quick background and then the question. I am doing a
redirect to an html page(index.html) after a username and login has been
validated. The redirect works fine except that the new page is being
displayed in the middle frame of the index.html. Is there a way that I
can, in my servlet code, dispose of the index.html file and have only
the file(home.html frame) I am redirecting be the one displayed? Please
see code below.
Cheers
Pat
//imports java servlet libraries
import javax.servlet.*;
import javax.servlet.http.*;
//imports libraries
import java.util.*;
import java.io.*;
import java.sql.*;
public class LoginTest extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException
{
doPost(req,res);
}
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
PrintWriter out = res.getWriter();
res.setContentType("text/html");
String Uname = req.getParameter("username");
String Upasswd = req.getParameter("userpasswd");
if ( req.getParameter("username").equals("") ||
req.getParameter("userpasswd").equals(""))
{
out.println("<HTML><HEAD><TITLE>Access Denied</TITLE></HEAD>");
out.println("<BODY>Your login and password are invalid.<BR>");
out.println("You may want to
<A>HREF=http://barney:8080/index.html>try again</A>");
out.println("</BODY></HTML>");
}
else if ( !req.getParameter("username").equals("") &&
!req.getParameter("userpasswd").equals(""))
{
boolean isValidUser = validateUser(Uname,Upasswd);
if ( isValidUser ) {
//IT IS A SUCCESS DO THE REDIRECT HERE....
res.sendRedirect("http://barney:8080/text/app/home.html");
}
else
{
//FAILED RETURN MESSAGE TO USER
out.println("<p> User Validation Failed for User: "
+ Uname); }
}
}
public boolean validateUser(String username, String userpassword)
{
String dbuserid = "";
String dbpasswd = "";
boolean isValidUser = false;
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
}
catch(java.lang.ClassNotFoundException e)
{
System.err.print("ClassNotFoundException:");
System.err.println(e.getMessage());
}
try
{
//DriverManager.registerDriver(new
oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection(
"jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=(ADDRESS="+
"(PROTOCOL = TCP)(HOST = fred)"+
"(PORT = 1521)))(CONNECT_DATA = (SID =ORA)))",
"dev_user","dev_user");
// Create a Statement and create a query string!
String query = "SELECT USERNAME, PASSWORD FROM USERLOGIN"
+
" where USERNAME = '" + username +
"' and PASSWORD = '" + userpassword + "'";
Statement stmt = conn.createStatement();
ResultSet rst = stmt.executeQuery(query);
if (rst.next()) {
dbuserid = rst.getString(1);
dbpasswd = rst.getString(2);
}
if ( username.equals(dbuserid.trim()) &&
userpassword.equals(dbpasswd.trim()) )
{
//We have a successful match of input userid and
//password with a database rec.
isValidUser = true;
} else {
//we did not succeed
isValidUser = false;
}
stmt.close();
conn.close();
} catch(SQLException ex) {
System.out.println("SQLException: " + ex.getMessage());
}
return isValidUser;
}
}
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