database.java

一个基于局域网的c/s模式网上购物系统,功能比较全面.数据库为Access.

import java.sql.*;

public class DataBase
{
	Connection con;
	ResultSet rs;
	Statement stmt;
	public DataBase()
	{
		try
		{
			Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver" );
			con=DriverManager.getConnection("jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ=ShopingMallDataBase.mdb");
			stmt=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
		}
	 	catch ( ClassNotFoundException cnfex ) 
	 	{
	 		System.err.println("Failed to load JDBC/ODBC driver." );
         	cnfex.printStackTrace();
         	System.exit( 1 ); 
      	}
		catch(SQLException sqle)
		{
			System.out.println(sqle.toString());
		}
	}
	
	public ResultSet getResult(String strSQL)
	{
		try
		{
			rs=stmt.executeQuery(strSQL);
			return rs;
		}
		catch(SQLException sqle)
		{
			System.out.println(sqle.toString());
			return null;
		}
	}
    
    public boolean updateSql(String strSQL)
    {
      	try
      	{
      		stmt.executeUpdate(strSQL);
        	con.commit();
            return true;
        }
        catch(SQLException sqle)
        {
        	System.out.println(sqle.toString());
        	return false;
        }
        
    }
    
    public void closeConnection()
    {
       	try
       	{
      		con.close();
       	}
       	catch(SQLException sqle)
       	{
       		System.out.println(sqle.toString());
       	}
    }
       
}