I simply want to use SQL Server database in my HTTP Servlet program but my program can't seem to connect to the database. It gives me the following error:
No suitable driver found for jdbc:sqlserver://localhost:1433;databaseName=Bookyard;integratedSecurity=true;
This is my connection method.
package practice.bookyard.server.util;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class Database {
public static Connection getConnection() {
String url = "jdbc:sqlserver://(LocalDb)\\MSSQLLocalDB:1433;databaseName=Bookyard;integratedSecurity=true;";
Connection connection = null;
try {
connection = DriverManager.getConnection(url);
} catch (SQLException e) {
e.printStackTrace();
}
return connection;
}
}
I had the sever name as localhost:1433
earlier but I changed it to the SQL Server instance name (LocalDb)\\MSSQLLocalDB:1433
but it still seems to pick up the old name.
Also, I am not sure how to provide the right connection string when connecting to SQL Server localdb.
I am using Eclipse for Java EE, Mars 2, and I downloaded Microsoft JDBC drivers for SQL 6.0 from this website.
I ran the installation, unzipped the contents of the resulting folder. Then, I added the sqljdbc42.jar file to the build path as I am targeting JDK 1.8.
UPDATE
Upon Scary Wombat's suggestion, I have also added the path to the sqljdbc42.jar file to my classpath.
However, I still get the same error.
I am pretty confident this is a reflection issue, in that the type loader isn't able to resolve the driver type from my connection string. Which means, the connection string syntax I am using is wrong.
I changed my connection string to read as follows:
String url = "jdbc:sqlserver://localhost:1433;
instance=(LocalDb)\\MSSQLLocalDB;
databaseName=Bookyard;integratedSecurity=true;";
However, I still not only get the same error but the exception message I receive still has my old connection string. So, clearly, there's also some caching going on, I just don't know where. Who is caching my connection string and how do I refresh / clear that cache?
Could you please tell me how to provide a SQL Server instance name if I am connecting to localdb and not on the main SQL Server instance?
As @ScaryWombat and @JozefChocholacek had hinted, it turned out to be a class path issue. Apparently, you have to copy and paste just the sqljdbc42.jar file, and this file only directly into the WEB-INF\lib
folder and not within any sub-folder.
I did that it still gave me that error.
That was because the WEB-INF
folder structure, when I viewed it in the Project Explorer
, still had the old folder structure. So, I right-clicked on the WEB-INF
folder in the Project Explorer
and selected the Refresh
command.
I also updated my environmental variable CLASSPATH
to point it to the WEB-INF
folder and that error went away.