作业-1

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="NewFile1.jsp">        
账户名称:
<br>
<input name="zhanghu" type="text" width="30" />
<br>
密码:
<br>
<input name="mima" type="text" width="30" />
<br>
<input type="submit" value="提交"/>
</form>
</body>
</html>
1
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" %>
    <%@ page errorPage="NewFile2.jsp"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<%
    String zh =new String( request.getParameter("zhanghu").getBytes("ISO-8859-1"),"UTF-8");
    String mm =new String( request.getParameter("mima").getBytes("ISO-8859-1"),"UTF-8");

if ( zh.equals("zhanghu"))        
{
    if(mm.equals("mima"))
    {
        response.sendRedirect("NewFile3.jsp");
    }
    else
    {
        response.sendRedirect("NewFile2.jsp");
    }
}
else
{
    response.sendRedirect("NewFile2.jsp");
}
%>
</body>
</html>
2
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" isErrorPage="true"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
输入有误!
<% 
response.setHeader("refresh","30;URL=NewFile.jsp");
%>
</body>
</html
3
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
登陆成功!
</body>
</html>
4
原文地址:https://www.cnblogs.com/name-hanlin/p/4996096.html