📄 check.jsp
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<html>
<head>
<title>登录检查</title>
<%@ page session="true" %>
<%@ page contentType="text/html;charset=gb2312" %>
</head>
<body>
<%@ page language="java" %>
<%@ page import="java.util.*" %>
<%@ page import="java.lang.*" %>
<%@ page import="java.io.*" %>
<%@ page import="javax.servlet.*" %>
<%@ page import="javax.servlet.http.*" %>
<%@ page import="java.sql.*" %>
<%@ page import="ConDB" %>
<jsp:useBean id="check" scope="page" class="ConDB" />
<%
boolean flag = false;
String name=(String)request.getParameter("name");
name=name.trim();
String stdid=(String)request.getParameter("id");
stdid = stdid.trim();
%>
<%
if(name.length()!=0&&stdid.length()!=0){
String sql = "select * from student where stdname='"+name+" and 'stdid= '"+stdid+"' ";
ResultSet RS = check.executeQuery(sql);
if(RS.next())
{
flag = true;
RS.close();
}
else
{
out.println("<center>没有这个学生记录!<br>");
out.println("<a href='./login.htm'>返回</a></center>");
RS.close();
}
}
else{
out.println("<center>你没有写姓名或学号!<br>");
out.println("<a href='./login.htm'>返回</a></center>");
}
if(flag){
application.setAttribute("stdname",""+name+"");
application.setAttribute("stdid",""+stdid+"");
%>
<jsp:forward page="select.jsp"/>
<%}%>
</body>
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