jsp第五次作业
login
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>login</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> <style type="text/css"> body{font-size:20px;} </style> <script type="text/javascript"> function mycheck(){ if(form1.userName.value==""){ alert("用户名不能为空，请输入用户名"); form1.userName.focuse(); return; } if(form1.password.value==""){ alert("密码不能为空，请输入密码"); form1.password.focus(); return; } if(form1.validationCode.value==""){ alert("验证码不能为空，请输入验证码"); form1.validationCode.focus(); return; } if(form1.validationCode.value!=form1.validationCode1.value){ alert("请输入正确的验证码"); form1.validationCode.focus(); return; } form1.submit1(); } </script> </head> <body> <form action="Check.jsp" name="form1" method="post"> 用户名:<input type="text" name="userName" size="20"><br> 密 码: <input type="password" name="password" size="20"><br> 验证码:<input type="text" name="validationCode" onKeyDown="if(event.keyCode==13){form1.submit.focus();}"size="6"> <% int intmethod1=(int)((((Math.random())*5))+1); int intmethod2=(int)((((Math.random())*5))+1); int intmethod3=(int)((((Math.random())*5))+1); int intmethod4=(int)((((Math.random())*5))+1); String intsum=intmethod1+""+intmethod2+intmethod3+intmethod4; %> <input type="hidden" name="validationCode1" value="<%=intsum%>"> <img style="height:20px;weight:20px" src="images/<%=intmethod1 %>.png"> <img style="height:20px;weight:20px" src="images/<%=intmethod2 %>.png"> <img style="height:20px;weight:20px" src="images/<%=intmethod3 %>.png"> <img style="height:20px;weight:20px" src="images/<%=intmethod4 %>.png"> <br> <input type="submit" name="submit1" value="登录" onClick="mycheck()"> <input type="reset" value="重置"> </form> <br> </body> </html>
Check
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<html>
<head>
<title>Check</title>
</head>
<body >
<%
//设置请求的编码，永远解决中文乱码问题
request.setCharacterEncoding("UTF-8");
String name = request.getParameter("userName");
String password = request.getParameter("password");
if(request.getParameter("validationCode1").equals(request.getParameter("validationCode"))){
if(name.equals("zqb")&&password.equals("1111")){
session.setAttribute("userName", name);
response.sendRedirect("main.jsp");
}else{
response.sendRedirect("login.jsp");
}
}else{
response.sendRedirect("login.jsp");
}
%>
</body>
</html>
main
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>main</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <% String name=(String)session.getAttribute("userName"); %> 您好<%=name %>,欢迎您访问<br> <a href="exit.jsp">【退出系统】</a> <br> </body> </html>
exit
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>exit</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <% session.invalidate(); response.sendRedirect("login.jsp"); %> <br> </body> </html>
