Thanks. I will look at that.
This is my connection:
package um.persistence;
import java.sql.Connection;
import java.sql.SQLException;
import javax.servlet.http.HttpServlet;
import java.sql.DriverManager;
public class PersistenceFacade {
//----------- fields ---------//
public static final String CONNECTION_DRIVER =
"com.microsoft.sqlserver.jdbc.SQLServerDriver";
public static final String CONNECTION_USER = "username";
public static final String CONNECTION_PASS = "password";
public static final String CONNECTION_URL = "url";
static {
try {
Class.forName(CONNECTION_DRIVER);
} catch (ClassNotFoundException ex) {
ex.printStackTrace();
}
}
private String connectionUrl = null;
private String connectionUser = null;
private String connectionPass = null;
//------------ constructors -----------//
//public PersistenceFacade() {}
public PersistenceFacade(HttpServlet servlet) {
connectionUser = servlet.getInitParameter(CONNECTION_USER);
connectionPass = servlet.getInitParameter(CONNECTION_PASS);
connectionUrl = servlet.getInitParameter(CONNECTION_URL);
}
//------------- public methods -----------//
public Connection getConnection() throws SQLException {
System.err.println("getConnection startet!");
if(connectionUser == null) {
throw new SQLException("Missing parameter "+CONNECTION_USER);
} else if(connectionPass == null) {
throw new SQLException("Missing parameter "+CONNECTION_PASS);
} else if(connectionUrl == null) {
throw new SQLException("Missing parameter "+CONNECTION_URL);
}
return DriverManager.getConnection(
connectionUrl,
connectionUser,
connectionPass
);
}
public void closeConnection(Connection conn) {
try {
if(!conn.isClosed()) {
conn.close();
}
} catch (SQLException ex) {
ex.printStackTrace();
}
}
//------------ private methods ----------//
}
And I call the PersistenceFacade like this:
PersistenceFacade persistenceFacade = new PersistenceFacade(getServlet());
conn = persistenceFacade.getConnection();
I get no errors only a white screen!!!!!
----- Original Message -----
From: "Christopher Schultz" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <[email protected]>
Sent: Friday, June 22, 2007 2:26 PM
Subject: Re: Realm works; db connection does not?
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Søren,
>
> Søren Blidorf wrote:
> > I do mean realm and the reason why I mention it is that I can validate
users
> > via my users and user_roles in my db, so the connection should work I
guess?
>
> That depends upon your connection settings.
>
> > <Context path="/xx" docBase="webapp" reloadable="true">
> > <Realm name="UMRealm"
>
> This looks good... and it should, since it apparently works.
>
> > Get the connection with: DriverManager.getConnection( connectionUrl,
> > connectionUser, connectionPass)
>
> This is just about the simplest way to get a connection. Are you using
> the same URL, username, and password? I don't see why this wouldn't
> work. On the other hand, I'd never do it this way: I'd use a connection
> pool (see below).
>
> > I also just upgrade my struts could it be a taglib thing?
>
> This should have nothing to do with either Struts or your taglibs
> (unless you use taglibs for SQL queries... <shiver>).
>
> My recommendation is to use a JNDI datasource and then use that for both
> your "in-app" database connections as well as the <Realm>. Basically,
> you change your <Context> element to include:
>
> <Resource [see documentation for JNDI DataSource] />
> <Realm [see documentation for DataSourceRealm;
> don't forget to set localDataSource="true"] />
>
> Then, in your code, you'll need a slightly more complicated way of
> getting a database connection. But, you already have your "get
> connection" logic in a method used everywhere, right?
>
> import javax.naming.Context;
> import javax.naming.InitialContext;
> import javax.naming.NamingException;
> import javax.swl.DataSource;
>
> public Connection getConnection()
> throws SQLException, NamingException
> {
> Context ctx = new InitialContext();
>
> DataSource ds = (DataSource)ctx.lookup(DATASOURCE_PATH);
>
> if(null == ds)
> throw new NamingException("Cannot obtain DataSource");
>
> return ds.getConnection();
> }
>
> This way, both the Realm and your application are using the same pool of
> connections. This avoids weird situations where your realm works but not
> your application (and vice versa).
>
> Hope that helps,
> - -chris
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