MVC设计模式应用实例-登录程序.docx

MVC设计模式应用实例－登录程序－－－－知道自己错在哪的猿是幸福的。基本功：要求会用自己的话讲解、MVC设计模式特点、画出MVC处理流程图：程序编写要靠思想！！！登录程序流程图：程序清单及作用：整体编程思想!!!--使用zz数据库usezz;--删除user表droptableuserifexistsuser;--创建user表createtableuser(useridvarchar(30)primarykey,namevarchar(30)notnull,passwordvarchar(30)notnull);insertintouser(userid,name,password)values('admin','administrator','admin');D:\ProgramFiles\webdemo\WEB-INF\classes\User.javapackagezz.vo;publicclassUser{privateStringuserid;privateStringname;privateStringpassword;publicvoidsetUserid(Stringuserid){//用户IDthis.userid=userid;}publicStringgetUserid(){returnthis.userid;}publicvoidsetName(Stringname){this.name=name;}publicStringgetName(){returnthis.name;}publicvoidsetPassword(Stringpassword){this.password=password;}publicStringgetPassword(){returnthis.password;}}D:\ProgramFiles\webdemo\WEB-INF\classes\DatabaseConnection.javapackagezz.dbc;importjava.sql.Connection;importjava.sql.DriverManager;publicclassDatabaseConnection{publicstaticfinalStringDBDRIVER="org.gjt.mm.mysql.Driver";publicstaticfinalStringDBURL="jdbc:mysql://localhost:3306/zz";publicstaticfinalStringDBUSER="root";publicstaticfinalStringDBPASSWORD="mysql";publicConnectionconn=null;publicDatabaseConnection()throwsException{//在构造方法中进行数据库连接try{Class.forName("DBDRIVER");//加载驱动this.conn=DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD);//连接数据库}catch(Exceptione){throwe;}}publicConnectiongetConnection(){//取得数据库连接returnthis.conn;}publicvoidclose()throwsException{if(this.conn!=null){try{this.conn.close();}catch(Exceptione){throwe;}}}}D:\ProgramFiles\webdemo\WEB-INF\classes\IUserDAO.javapackagezz.dao;importzz.vo.User;publicinterfaceIUserDAO{/****************执行查询操作*************用户登录验证*@paramuser传入VO对象*@return验证的操作结果*@throwsException*/publicbooleanfindLogin(Useruser)throwsException;}D:\ProgramFiles\webdemo\WEB-INF\classes\UserDAOImpl.javapackagezz.dao.impl;importjava.sql.Connection;importjava.sql.PreparedStatement;importjava.sql.ResultSet;importzz.dao.IUserDAO;importzz.vo.User;//实现类publicclassUserDAOImplimplementsIU