Thanks for the answer.
_________________ Manolo Ramirez T.
Madere, Colin wrote:
How is your JNDI resource configured? In an explicitly defined Context or in the DefaultContext? ResourceLinked?
I ask because there are a number of folks with similar problems that look to be something missing in how JNDI datasources are handled internally when using DefaultContext.
See other topics:
* ResourceLink and DefaultContext * Tomcat 4.1 DefaultContext Bug? * Question about Tomcat Documentation * Globally defined JNDI DataSource
-----Original Message-----
From: Manolo Ramirez T. [mailto:[EMAIL PROTECTED] Sent: Friday, August 22, 2003 10:55 PM
To: Tomcat Users List
Subject: Can not load JNDI DataSource in Servlet.init()
Hi all,
Why I can't load a JNDI resource on the init method of my servlet? there is no problem doing that in doGet() but on init() it doesn't work. the logs entry is:
java.sql.SQLException: Cannot load JDBC driver class 'null'
It's the same code! What I'm missing?
this is my servlet code:
package libreria;
import java.io.PrintWriter; import java.io.IOException; import javax.servlet.*; import javax.servlet.http.*; import java.sql.*; import javax.sql.*; import javax.naming.*;
public class MyServlet extends HttpServlet {
public void init (ServletConfig config) throws ServletException{ super.init(config); try { Context ctx = new InitialContext(); if(ctx==null) { System.out.println("fallo InitialContext"); return; }
DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/ComercialDB");
if(ds==null) {
System.out.println("fallo lookup");
return;
}
Connection conn = ds.getConnection();
Statement stm = conn.createStatement(); ResultSet rs = stm.executeQuery("select * from pruebas");
while(rs.next()) {
System.out.println(rs.getInt("id")+"::"+rs.getString("nombre")+"::"+rs.getSt
ring("apellido"));
}
}
catch(Exception e) {
e.printStackTrace();
}
}
public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException,ServletException {
response.setContentType("text/plain");
PrintWriter out= response.getWriter();
out.println("holas muchas");
try { Context ctx = new InitialContext(); if(ctx==null) { out.println("fallo InitialContext"); return; }
DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/ComercialDB");
if(ds==null) {
out.println("fallo lookup");
return;
}
Connection conn = ds.getConnection();
Statement stm = conn.createStatement(); ResultSet rs = stm.executeQuery("select * from pruebas");
while(rs.next()) {
out.println(rs.getInt("id")+"::"+rs.getString("nombre")+rs.getString("apelli
do"));
}
}
catch(Exception e) {
e.printStackTrace(out);
}
}
}
Regards.
_____________ Manolo Ramirez T.
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