JSP>进入图书管理
");out.println("");out.println("");}else{usersession.setAttribute("islogin",true);out.println("");out.println("");out.println("");out.println("");out.println("");out.println("
登录成功
");out.println("
返回首页
");out.println("");out.println("");}}else{out.println("");out.println("");out.println("");out.println("");out.println("");out.println("
登录失败
");out.println("
返回首页
");out.println("");out.println("");}}}数据库连接类:数据库连接类:packageshop;importjava.sql.*;
publicclassDatabaseConn{publicstaticConnectiongetConnection(){try{Class.forName("org.gjt.mm.mysql.Driver").newInstance();Connectionconn=DriverManager.getConnection("jdbc:mysql://localhost/Book","root","");returnconn;}catch