Solved

question about gettting a database connection from the DriverManager class

Posted on 2007-03-23
6
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Last Modified: 2013-11-23
Hi all,

When I try and get a connection using the driverManager class and I pass in an incorrect suprotocol name I get an sqlexception which is fine. But if my subname is incorrect I don't get an exception?
Why is this?

        try
        {
String subprotocol = "correct:";
String subname="notvalid";
            con = DriverManager.getConnection(subprotocol+subname);
            con.setAutoCommit(true);
        }
        catch (SQLException se)
        {
            //print some loggging info
        }

Thanks
0
Comment
Question by:mousemat212
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6 Comments
 
LVL 11

Expert Comment

by:elfe69
ID: 18779177
If I test what you explain, I always receive an SQLException:

java.sql.SQLException: No suitable driver

Can you provide an example with the connection string you are using ?
0
 

Author Comment

by:mousemat212
ID: 18779660

Thanks for your reply,

Ok here is an example which does not throw an exception but it should since subname is set to "notvalid"?

Thank you,

        try
        {
String subprotocol = "jdbc:apache:commons:dbcp:";
String subname="notvalid";
            con = DriverManager.getConnection(subprotocol+subname);
            con.setAutoCommit(true);
        }
        catch (SQLException se)
        {
            //print some loggging info
        }

0
 
LVL 11

Expert Comment

by:elfe69
ID: 18779847
It is not a DriverManager issue,a DBCP issue, maybe is an Exception rather than an SQLException thrown ?
0
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LVL 20

Accepted Solution

by:
gatorvip earned 125 total points
ID: 18781420
You do have something that prints the error info and not just the comment, right?
***
try
{
     String subprotocol = "jdbc:apache:commons:dbcp:";
     String subname="notvalid";
     Connection  con = DriverManager.getConnection(subprotocol+subname);
     con.setAutoCommit(true);
}
catch (SQLException se)
{
   se.printStackTrace();
}

***

java.sql.SQLException: No suitable driver found for jdbc:apache:commons:dbcp:not
valid
        at java.sql.DriverManager.getConnection(DriverManager.java:602)
        at java.sql.DriverManager.getConnection(DriverManager.java:207)
....
0
 
LVL 11

Expert Comment

by:elfe69
ID: 18784014
Try with something like that to see if you do not get another error:

try {
    String subprotocol = "correct:";
    String subname="notvalid";
    con = DriverManager.getConnection(subprotocol+subname);
    con.setAutoCommit(true);
} catch (SQLException se) {
    se.printStackTrace();
} catch (Exception e) {
    e.printStackTrace();
}
0
 
LVL 30

Expert Comment

by:Mayank S
ID: 18785759
Yeah I guess it has to print an exception.
0

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