ASP影片租赁系统论文.doc

目录第一章前言····································································································2第二章编程环境基础知识···················································································32.1利用ADO访问数据库·············································································32.2ASP与CGI的比较···················································································4第三章需求分析································································································63.1功能需求分析························································································63.2性能需求分析························································································63.2.1软件··························································································63.2.2硬件··························································································6第四章总体设计································································································74.1数据库的设计························································································74.1.1数据库的需求分析········································································74.1.2概念结构的设计···········································································74.1.3数据库逻辑结构的设计·································································104.1.4物理结构的设计··········································································104.2功能模块的划分····················································································14第五章详细设计·····························································································145.1模块详细的设计····················································································155.1.1模块接口···················································································155.2页面设计及代码····················································································185.2.1注册页面及代码分析····································································185.2.2用户登陆界面及代码分析······························································205.2.3影片浏览界面及代码···································································225.2.4用户信息界面及代码分析······························································265.2.5用户资料界面及代码···································································305.2.6查看用户租赁信息截面及代码·······················································355.2.7用户预定影片界面及代码·····························································385.2.8用户注销的代码分析···································································40第六章节调试··································································································41结论··············································································································42结束语···········································································································42致谢··············································································································43参考文献········································································································43第一章前言互联网发展速度迅猛，电子商务成为21世纪商务发展道路上的一大热点，随着宽带网络的普及及互联网应用方式的发展，电子商务正以前所未有的速度对传统的商务方式及理论造成可很大的冲击。并对以往的商务方式所进行的行业进行可很大程度的渗透。电子商务以其低廉的成本，相对方便的应用，以及互联网络所带来的前所未有的宣传效应，正成为商务活动发展的一个至关重要的平台。因此我们想开发一个在线的影片租赁系统，以此来表达我们对电子商务发展的拥护和对其前景的看好第二章编程环境基础知识2.1利用ADO访问数据库ADO（ActiveXDataObjects）是一种操作Microsoft所支持的数据库的新技术。在ASP中，ADO可以看作是一个服务器组件(ServerComponent)，更简单点说，是一系列的对象，应用这些功能强大的对象，即可轻松完成对数据库复杂的操作。本文中个性化页面的实现便大量地用到了ADO技术。具体的操作步骤可以归纳为以下几步：1创建数据库源名(DSN)2创建数据库链接(Connection)3创建数据对象4操作数据库5关闭数据对象和链接每一步的作法如下：1、创建数据源名DSN(DateSourceName)即数据源名称。我们知道，ODBC是一种访问数据库的方法，只要系统中有相应的ODBC驱动程序，任何程序就可以通过ODBC操纵驱动程序的数据库。比如我们系统中有Access的ODBC驱动程序，那么即使我们没有Access软件，也可以在我们的程序中对一个Access的MDB数据库加、删、改记录。而且我们根本不用知道这个数据库是放在哪里的。我们只要写出SQL语句，ODBC驱动程序就会帮我们做一切事情。我们在给ODBC驱动程序传SQL指令时，即是用DSN来告诉它到底操作的是哪一个数据库。如果数据库的平台变了，比如我们改用了SQLServer的数据库，只要其中表的结构没变，我们就不用改写我们的程序，只要重新在系统中配置DSN就行了。由此可见，DSN是应用程序和数据库之间的桥梁。2、创建数据库链接(Connection)链接用以保持一些关于正在访问的数据的一些状态信息，以及链接者信息。ASP文件中如果要访问数据，必须首先创建与数据库的链接，其语法如下：setConn=Server.createObject(“ADOBD.CONNECTION”)这条语句创建了链接对象Conn，接下来：connstr="Provider=Microsoft.Jet.OLEDB.4.0；Data.Source="&Server.MapPath(""&db&"")conn.Openconnstr这条语句打开链接，用到了DSN，本例为“connstr”。以上两个步骤缺一不可，因为链接对象的创建与打开是两回事，只有打开了才真正可以使用。3、创建数据对象(RecordSet)ADO中的数据对象通常保存的是查询结果。RecordSet是ADO中最复杂的对象，有许多属性和方法。RecordSet保存的是一行行的记录，并标有一个当前记录。以下是创建方法：SetRecordSet=Conn.Execute(sqtStr)这条语句创建并打开了对象RecordSet，其中Con是先前创建的链接对象，rs是一个字串，代表一条标准的SQL语句。例如：rs=“SELECT*FROMshop_books”SetRecordSet=mConn.Execute(rs)这条语句执行后，对象RecordSet中就保存了表tab1中的所有记录。4、操作数据库我们通过调用链接对象的Execute方法来将查询结果返回给一个数据对象或进行插入、删除等操作。例如：rs=“INSERTINTOtab1VALUES(1,2)”mConn.Execute(rs)/执行插入操作5、关闭数据对象和链接对象在使用了ADO对象之后要关闭它，因为它使用了一定的服务器资源。通过调用方法close实现关闭，然后再释放它。RecordSet.closeSetRecordSet=Nothing/关闭创建的数据对象mConn.closeSetmConn=Nothing/关闭创建的链接对象2.2ASP与CGI的比较CGI(CommonGatewayInterface，通用网关接口)也是Internet上一种功能强大的Web页面技术，其工作方式有别于ASP。我们现对二者进行比较。ActiveServerPages开发Web应用程序的特点：1完全嵌入HTML，与HTML、Script语言完美结合。2无须手动编译和链接程序。