找不到合适的驱动程序

Question

I am trying to execute a sql query in java 6:

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;


/**
 *
 * @author ramy
 */
public class JavaTest 
{

    public static void main(String[] args) 
    {
        try
        {
            String url="jdbc:msql://127.0.0.1:1521;DatabaseName=test";
            Connection ct=DriverManager.getConnection(url,"","");
            Statement st=ct.createStatement();
            ResultSet result;
            result=st.executeQuery("select * from utente");
            while(result.next())
            {
                String temp=result.getString("Num_tessera");
                System.out.println(temp);
            }
            ct.close();
        }
        catch(Exception e)
        {
            System.out.println(e.getMessage());
        }
    }
}

I have installed mysql 5.5 cluster on Mac Os X, in the url I have just written my local IP (localhost), and the database name is test.
Why doesn't it find the database? Do I have to install some driver? I already have the database installed and "utente" is an existing table.

Answer 1

I suspect the problem is your JDBC URL:

"jdbc:msql://..."

Did you mean

"jdbc:mysql://..."

by any chance?

(And yes, you'll also need the MySQL driver in your classpath. It's not something you need to install , but the jar file will need to be available.)

Answer 2

确保您的类路径中有MySQL JDBC驱动程序。

Answer 3

还请检查URL中的端口，因为1521是Oracle，MySQL是3306