📄 usercheck.jsp
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<%@ include file="common.jsp" %><%@page contentType="text/html"%><%@page pageEncoding="UTF-8"%><%@page session="true" %><%@page import="java.sql.*" %><html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title></title> </head> <body> <%! String username=null,userpassword=null; %> <% response.setContentType("text/html;charset=GB2312"); username=request.getParameter("uname"); userpassword=request.getParameter("upassword"); String rand = (String)session.getAttribute("rand"); String input = request.getParameter("rand"); if(username!=null&&userpassword!=null) { session.setAttribute("uname",username); session.setAttribute("upassword",userpassword); } User user = bookDB.getUser(username); %> <% if(username.equals("")|| userpassword.equals("")||username==null||userpassword==null) { out.println("<script>alert('用户名或密码不能为空!请重新登陆!');" + "location.href='login.jsp'</script>"); } else { if(user.getUpassword().equals(userpassword)) { if (rand.equals(input)) { %> <jsp:forward page="index.jsp"/> <% session.setAttribute("uname",username); } else { out.println("<script>alert('验证码输入不正确!请重新登陆!');" + "location.href='login.jsp'</script>"); } } else{ out.println("<script>alert('用户名或密码不正确!请重新登陆!');" + "location.href='login.jsp'</script>"); } } %> </body></html>⌨️ 快捷键说明
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