jsp第五次作业 

<%@ 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>
   <title>登录界面</title>
   <style type="text/css">
   body{font-size:16px;}
   </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.focus();
  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 bgcolor="pink">
  <form action="loginCkeck.jsp" name="form1" method="post">
  用户名:<input type="text" name="userName" size="16">
  <br>密&nbsp;&nbsp;&nbsp;&nbsp;码:
  <input type="password" name="password" size="18">
  <br>
  验证码:<input type="text" name="validationgCode" 
  onKeyDown="if(event.keyCode==13){form1.submit.focus();}" size="6">
  <%
 int intmethod1=(int) ((((Math.random())*11))-1) ;
 int intmethod2=(int) ((((Math.random())*11))-1) ;
 int intmethod3=(int) ((((Math.random())*11))-1) ;
 int intmethod4=(int) ((((Math.random())*11))-1) ;
  String intsum=intmethod1+""+intmethod2+intmethod3+intmethod4;
   %>
  <!-- 设置隐藏域，验证比较时使用 -->
  <input type="hidden" name="validationCode1" value="<%=intsum %>">
    <img src="../image/<%=intmethod1%>.gif">
    <img src="../image/<%=intmethod2%>.gif">
    <img src="../image/<%=intmethod3%>.gif">
    <img src="../image/<%=intmethod4%>.gif">
    <br>
  <input type="submit" name="submit1" value="登录" onClick="mycheck()">
  &nbsp;
  <input type="rest" value="重置">
  </form>
   
  </body>
</html>
<%@ 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>
   <title>处理登录页面的数据</title> 
  </head>
  <body bgcolor="pink">
  <%
  request.setCharacterEncoding("UTF-8");
  String name=request.getParameter("userName");
  String password=request.getParameter("password");
  if(request.getParameter("validationCode1").equals(request.getParater("validationCode")))
  {
  if(name.equals("pdy")&&(password.equals("666666"))){
  session.setAttribute("userName",name);
  response.sendRedirect(main.jsp);
    
  }else{
  
  response.sendRedirect("login.jsp");
    }
  }else{
  
  response.sendRedirect("login.jsp");
  }
    %>
    
  </body>
</html>
<%@ 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>
    <title>系统主页面</title>
  </head>
  
  <body bgcolor="pink">
  <%
  String name=(String)session.getAttribute("userName");
   %>
   您好<%=name %>,欢迎您访问!<br>
   <a herf="exit.jsp">[退出系统]</a>
  </body>
</html>
<%@ 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>
    <title>退出系统</title>
  </head>
  
  <body >
 <% 
 session.invalidate();
 response.sendRedirect("login.jsp");
 %>
  </body>
</html>

posted @ 2020-04-15 10:43  IS'ME  阅读(128)  评论(0)    收藏  举报