连接到Mac上的MySql:没有合适的驱动程序错误

我得到了错误:java.sql.SQLException:没有合适的驱动程序

我已经导入了这里提供的.jar文件 http://dev.mysql.com/downloads/mirror.php?id=13598

我正在使用Eclipse。

我使用以下代码连接到数据库:

package dao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DBCon {

    private static final String host = "jdbc:mysql://localhost";
    private static final String port = "3306";
    private static final String db = "mydb";
//      private static final String user = "root";
//      private static final String pwd = "";
    private static final String user = "myusername";
    private static final String pwd = "mypwd";

    public Connection getCon() {
        Connection con = null;
        try {
            String url = host + ":" + port + "/" + db;

            con = DriverManager.getConnection(url, user, pwd);

        } catch (SQLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return con;
    }
}

然后我用以下代码查询数据库:

package dao;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.sql.Connection;
import model.ClassPojo;

public class ARCSDao {

public ArrayList<ClassPojo> viewClasses() throws SQLException{
    ArrayList<ClassPojo> classList = new ArrayList<ClassPojo>();

    DBCon db = new DBCon();
    Connection con = db.getCon();
    Statement stmt;
    ResultSet rs;
    stmt = con.createStatement();
    rs = stmt.executeQuery("SELECT * FROM classes");
    while(rs.next()){
           ClassPojo aClass = new ClassPojo();
           rs.getString("class_name");
           rs.getString("class_uri");
           classList.add(aClass);
    }           
    return classList;
    }
}