JSP练习:编写登录程序,错误时跳转

<%@ 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" method="post">
账号:<input type="text" name="name">

密码:<input type="password" name="password" >

<input type="submit" value="提交">
</form>
</body>
</html>
<%@ 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>
<%
String name=request.getParameter("name");
String password=request.getParameter("password");
if(name.equals("aaaa")&&password.equals("12345"))
    out.print("登陆成功");
else{
    response.sendRedirect("NewFile2.jsp");
} %>
</body>
</html>
<%@ 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>
账号或密码错误
<%response.setHeader("refresh","5;URL=NewFile.jsp"); %>
</body>
</html>
原文地址:https://www.cnblogs.com/wallan/p/5615872.html