How to connect jsp to oracle?

My system is not working,why?
System:
Os: Windows NT 4.0 + SP4
Db: Oracle 8i for NT
JDK: J2DE 1.3.1
Web: Tomcat 4.01
IE: IE 5.5
My Jsp file:
<HTML>
<HEAD>
<TITLE> Database Jsp Test </TITLE>
</HEAD>
<%@ page info="database handler"%>
<%@ page import="java.io.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.sql.*"%>
<BODY>
<%
try
     String DBUSER = "user";          
     String DBPASSWD = "passwd";          
     String DBCONNSTRING = "jdbc:oracle:thin:@dataserver:1521:testbase";
     DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
     Connection con=DriverManager.getConnection(DBCONNSTRING,DBUSER,DBPASSWD);
     Statement stmt = con.createStatement();
     String query="select UserId from UserInfo";
     ResultSet rs = stmt.executeQuery(query);
     while (rs.next())
          out.println(rs.getString(0));
          out.println("<br>");
     con.close();
catch (Exception e) {}
     out.println("Connection is not open!");
%>
</BODY>
</HTML>
Run my Jsp file, error is "oracle.jdbc.driver.OracleDriver not found".
I have put classes12.zip(in oracle\jdbc\lib) into Tomcat\lib and web-inf\lib.My CLASSPATH :
Classpath=.;e:\jdk1\lib\tools.jar;E:\Oracle\Ora81\jdbc\lib\classes12.zip;%TOMCAT_HOME%\lib\servlet.jar;%TOMCAT_HOME%\lib\webserver.jar;%TOMCAT_HOME%\lib\jasper.jar;%TOMCAT_HOME%\lib\xml.jar;%TOMCAT_HOME%\classes;
How to solution to the problem?Thanks a lot...

Something you may want to look into doing is using jspInit() to handle connecting to the database. Something similar to this:
public void jspInit() {
  try {
    // load the driver
    Class.forName("oracle.jdbc.driver.OracleDriver");
    // get the connection
    Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:ora81", "username", "password");
  } catch (Exception ex) {
    // inform the web container of problems
    ex.printStackTrace();
}Just use the <%! %> directive to section out the page properly. A better method would be to use a properties file, a database connection Servlet, and a custom TLD to handle iterating through resultsets.
Enjoy

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