Thread: Problem connecting by JDBC with a SERVLET
I try to access a database on a Linux server, with
Apache, Tomcat & Postgres.
The servlet should connect to the database, make a
select and display the results in a webpage
My code is the following:
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
res.setContentType("text/html");
PrintWriter out = res.getWriter();
try {
String database = "intvuelos";
String username = "nobody";
String password = "";
Class.forName("org.postgresql.Driver");
con =
DriverManager.getConnection("jdbc:postgresql://10.65.28.12/invuelos",
username, password);
stmt = con.createStatement();
rs = stmt.executeQuery("SELECT numeroempleado,
origen, destino FROM viajes");
out.println("<html><head><title>Consulta de
Datos</title></head>");
out.println("<body>");
out.println("<ul>");
while(rs.next()){
out.println("<li>"+
rs.getString("numeroempleado") + " " +
rs.getString("nombre") + " " +
rs.getString("apellidos"));
}
out.println("</ul>");
out.println("</body></html>");
}
catch(ClassNotFoundException e){
out.println("Couldn't load database driver: " +
e.getMessage());
}
catch(SQLException e){
out.println("SQLException caught: " +
e.getMessage());
}
finally{
try{
if(con !=null) con.close();
}
catch (SQLException ignored){ }
}
}
}
****
Please help me if you can
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Andres,
What is the error you get back? Did you put the jdbc jar into the
webapp's lib directory?
Dave
-----Original Message-----
From: pgsql-jdbc-owner@postgresql.org
[mailto:pgsql-jdbc-owner@postgresql.org] On Behalf Of Andres Davila
Sent: Thursday, February 28, 2002 6:46 PM
To: pgsql-jdbc@postgresql.org
Subject: [JDBC] Problem connecting by JDBC with a SERVLET
I try to access a database on a Linux server, with
Apache, Tomcat & Postgres.
The servlet should connect to the database, make a
select and display the results in a webpage
My code is the following:
Connection con = null;
Statement stmt = null;
ResultSet rs = null;
res.setContentType("text/html");
PrintWriter out = res.getWriter();
try {
String database = "intvuelos";
String username = "nobody";
String password = "";
Class.forName("org.postgresql.Driver");
con =
DriverManager.getConnection("jdbc:postgresql://10.65.28.12/invuelos",
username, password);
stmt = con.createStatement();
rs = stmt.executeQuery("SELECT numeroempleado,
origen, destino FROM viajes");
out.println("<html><head><title>Consulta de
Datos</title></head>");
out.println("<body>");
out.println("<ul>");
while(rs.next()){
out.println("<li>"+
rs.getString("numeroempleado") + " " +
rs.getString("nombre") + " " +
rs.getString("apellidos"));
}
out.println("</ul>");
out.println("</body></html>");
}
catch(ClassNotFoundException e){
out.println("Couldn't load database driver: " + e.getMessage());
}
catch(SQLException e){ out.println("SQLException
caught: " + e.getMessage());
}
finally{
try{
if(con !=null) con.close();
}
catch (SQLException ignored){ }
}
}
}
****
Please help me if you can
__________________________________________________
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---------------------------(end of broadcast)---------------------------
TIP 5: Have you checked our extensive FAQ?
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Andres, which error message do you get? (it would help a lot)
Si quieres, puedes escribirme en español, directamente, no a la lista, no creo que les guste =)
On Thu, 28 Feb 2002 15:46:27 -0800 (PST)
Andres Davila <adavila0026@yahoo.com> wrote:
> I try to access a database on a Linux server, with
> Apache, Tomcat & Postgres.
>
> The servlet should connect to the database, make a
> select and display the results in a webpage
>
> My code is the following:
>
> Connection con = null;
> Statement stmt = null;
> ResultSet rs = null;
>
> res.setContentType("text/html");
> PrintWriter out = res.getWriter();
>
> try {
> String database = "intvuelos";
> String username = "nobody";
> String password = "";
> Class.forName("org.postgresql.Driver");
>
> con =
> DriverManager.getConnection("jdbc:postgresql://10.65.28.12/invuelos",
> username, password);
> stmt = con.createStatement();
> rs = stmt.executeQuery("SELECT numeroempleado,
> origen, destino FROM viajes");
>
> out.println("<html><head><title>Consulta de
> Datos</title></head>");
> out.println("<body>");
>
> out.println("<ul>");
>
> while(rs.next()){
>
> out.println("<li>"+
> rs.getString("numeroempleado") + " " +
> rs.getString("nombre") + " " +
> rs.getString("apellidos"));
>
> }
> out.println("</ul>");
> out.println("</body></html>");
> }
>
>
> catch(ClassNotFoundException e){
> out.println("Couldn't load database driver: " +
> e.getMessage());
> }
> catch(SQLException e){
> out.println("SQLException caught: " +
> e.getMessage());
> }
> finally{
> try{
> if(con !=null) con.close();
> }
> catch (SQLException ignored){ }
> }
> }
> }
>
> ****
>
>
> Please help me if you can
>
>
>
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Greetings - Send FREE e-cards for every occasion!
> http://greetings.yahoo.com
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: Have you checked our extensive FAQ?
>
> http://www.postgresql.org/users-lounge/docs/faq.html