Tomcat 5 con pool, Oracle, servlet error on Connection ocon = ds.getConnect

Question

Hello,
I am trying to create a connection pool to my Oracle db using the documentation provided for
Tomcat 5. In the servlet shown below, the servlet fails at this line:
Connection ocon = ds.getConnection();
The servlet stops with no error message. Also, I'm not sure what is supposed to go in
this line:
Context envContext = (Context)initContext.lookup("java:/comp/env");
which may be where the real problem begins. Any suggestions are greatly appreciated.
Here is the servlet:
package CraigsClasses;
import javax.servlet.*;
import javax.servlet.jsp.*;
import java.net.*;
import java.util.*;
import java.io.*;
import javax.servlet.http.*;
import java.sql.*;
import java.util.Date;
import java.text.*;
import javax.naming.*;
import javax.sql.DataSource;
public class CraigsMain extends HttpServlet {
public void init(ServletConfig config) throws ServletException {
super.init(config);
// Process the http Get request
public void doGet(HttpServletRequest request, HttpServletResponse response)
     throws ServletException, IOException {
try {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
Context initContext = new InitialContext();
Context envContext = (Context)initContext.lookup("java:/comp/env");
DataSource ds = (DataSource)envContext.lookup("jdbc/CraigsList");
Connection ocon = ds.getConnection();
String sql = "select formtitle from checkboxforms where cbformid = 157";
PreparedStatement pStmt = ocon.prepareStatement(sql);
ResultSet rs1 = pStmt.executeQuery();
rs1.next();
out.println("<br><br><br>" + rs1.getString(1) + "<br>");
} catch(SQLException sqle) {
System.err.println("sql exception error: " + sqle);
} catch(NamingException sqln) {
System.err.println("naming exception error: " + sqln);
// A post request calls the get request because they do the same thing
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
Thank you,
Logan

Answer 1

Hello,
I am trying to create a connection pool to my Oracle db using the documentation provided for
Tomcat 5. In the servlet shown below, the servlet fails at this line:
Connection ocon = ds.getConnection();
The servlet stops with no error message. Also, I'm not sure what is supposed to go in
this line:
Context envContext = (Context)initContext.lookup("java:/comp/env");
which may be where the real problem begins. Any suggestions are greatly appreciated.
Here is the servlet:
package CraigsClasses;
import javax.servlet.*;
import javax.servlet.jsp.*;
import java.net.*;
import java.util.*;
import java.io.*;
import javax.servlet.http.*;
import java.sql.*;
import java.util.Date;
import java.text.*;
import javax.naming.*;
import javax.sql.DataSource;
public class CraigsMain extends HttpServlet {
public void init(ServletConfig config) throws ServletException {
super.init(config);
// Process the http Get request
public void doGet(HttpServletRequest request, HttpServletResponse response)
     throws ServletException, IOException {
try {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
Context initContext = new InitialContext();
Context envContext = (Context)initContext.lookup("java:/comp/env");
DataSource ds = (DataSource)envContext.lookup("jdbc/CraigsList");
Connection ocon = ds.getConnection();
String sql = "select formtitle from checkboxforms where cbformid = 157";
PreparedStatement pStmt = ocon.prepareStatement(sql);
ResultSet rs1 = pStmt.executeQuery();
rs1.next();
out.println("<br><br><br>" + rs1.getString(1) + "<br>");
} catch(SQLException sqle) {
System.err.println("sql exception error: " + sqle);
} catch(NamingException sqln) {
System.err.println("naming exception error: " + sqln);
// A post request calls the get request because they do the same thing
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
Thank you,
Logan