刚学java,各位大侠请帮小弟一个忙

Question

你把catch中的ClassNotFoundException ex 改成Exception ex试试

Answer 1

public class ConnectionManager 
{ 
    public ConnectionManager() 
    { 
    } 
    public static Connection Getcon() 
    { 
        Connection con=null; 
        try 
        { 
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); 
            String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=NewsDB"; 
            String user="sa"; 
            String password="sa1"; 
            con= java.sql.DriverManager.getConnection(url,user,password); 
        } 
        catch (ClassNotFoundException ex) 
        { 
            ex.printStackTrace(); 
        } 
        catch (SQLException e) 
        { 
            e.printStackTrace(); 
        }         return con; 
    } 
} 

Answer 2

public class ConnectionManager 
{ 
    public ConnectionManager() 
    { 
    } 
    public static Connection Getcon() 
    { 
        Connection con=null; 
        try 
        { 
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); 
            String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=NewsDB"; 
            String user="sa"; 
            String password="sa1"; 
            con= java.sql.DriverManager.getConnection(url,user,password); 
        } 
        catch (ClassNotFoundException ex) 
        { 
            ex.printStackTrace(); 
        } 
        catch (SQLException e) 
        { 
            e.printStackTrace(); 
        }         return con; 
    } 
}