RE: couldn't load DB driver : null
| От | Peter Mount |
|---|---|
| Тема | RE: couldn't load DB driver : null |
| Дата | |
| Msg-id | 1B3D5E532D18D311861A00600865478CF1B191@exchange1.nt.maidstone.gov.uk обсуждение исходный текст |
| Ответ на | couldn't load DB driver : null ("S.A.Pamungkas" <moenk_2000@yahoo.com>) |
| Список | pgsql-interfaces |
Looking at your code, the "Couldn't load DB driver" message is being
generated by a ClassNotFound exception being thrown. This would indicate
that the org.postgresql.Driver class is not being found in the CLASSPATH.
That's probably what's going wrong here.
Peter
--
Peter Mount
Enterprise Support
Maidstone Borough Council
Any views stated are my own, and not those of Maidstone Borough Council
-----Original Message-----
From: S.A.Pamungkas [mailto:moenk_2000@yahoo.com]
Sent: Monday, July 31, 2000 12:40 PM
To: pgsql-interfaces@postgresql.org
Subject: [INTERFACES] couldn't load DB driver : null
Before, I can connect database both from applet or
servlet.But today, when I try to connect database from
applet or servlet, there was a problem.
By servlet the error message is : "Couldn't load DB
driver :null".
By applet, in the browser just appear "Connecting to
database ", and in the status bar is a message "Applet
myapplet org/postgresql/jdbc2/Resultset".
Help me please......
The SERVLET code :
import java.io.*;import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class myServlet extends HttpServlet
{ public void doGet(HttpServletRequest req,
HttpServletResponse res) throws ServletException, IOException { Connection con = null;Statement stmt = null;
ResultSet rs = null; res.setContentType("text/html"); PrintWriter out = res.getWriter();
try[ Class.forName("org.postgresql.Driver"); con =
DriverManager.getConnection("jdbc:postgresql:myDB",
"me", "pass"); stmt = con.createStatement(); rs = stmt.executeQuery("select k_id,
k_name, date
from myTable");
out.println("<HTML><HEAD><TITLE>KAMOKU</TITLE></HEAD>"); out.println("<BODY><FONT
COLOR='RED'><H3><BR>TEST
SERVLET & JDBC</H3><BR></FONT>"); out.println("SELECT id, name, date FROM
kamoku<BR><BR> "); out.println("<UL>"); while(rs.next()){ out.println("<LI>" +
rs.getString("k_id")+" "+
rs.getString("k_name") + " " + rs.getDate("date")); } out.println("<UL>");
out.println("</BODY></HTML>"); } catch(ClassNotFoundException e) { out.println("Couldn't
loadDB driver : " +
e.getMessage()); } catch(SQLException e) { out.println("SQLException caught : " +
e.getMessage()); } finally { try { if (con != null) con.close();
} catch (SQLException ignored) { } } }
}
Thank you.
S.A.Pamungkas
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