dcommon.java

在线模拟选课系统

/*
 * This product includes software developed by the
 * Apache Software Foundation (http://www.apache.org/).
 */
package ch07.database;

import java.sql.*;

import javax.servlet.http.*;

import ch07.*;

/**
 * 针对一些共通处理的父类
 * @author ShenYK
 * @version 1.0
 */
public class DCommon
{
    public Connection getDBConnection( )
    {
        //尝试连接数据库
        try
        {
            //载入MySQL的JDBC驱动类
            Class.forName(CommonConst.DB_DRIVER_CLASSNAME);
            //获得数据库连接
            Connection conn = DriverManager.getConnection( CommonConst.DB_CONN_STRING );
            
            return conn;
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
            return null;
        }
    }
}