<%@ 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=ISO-8859-1"> <title>登录页面</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.fouse(); return; } if(form1.password.value==""){ alert("密码不能为空，请输入密码！"); form1.password.fouse(); return; } if(form1.validationCode.value==""){ alert("验证码不能为空，请输入验证码！"); form1.validationCode.fouse(); return; } if(form1.validationCode.value!=form1.validationCode1.value){ alert("请输入正确的验证码！"); form1.validationCode.fouse(); return; } form1.submit(); } </script> </head> <body bgcolor="pink"> <form action="loginCheck.jsp" name="form1" method="post"> 用户名： <input type="text" name="userName" size="16"> <br>密 码： <input type="password" name="password"size="17"> <br> 验证码： <input type="text" name="validationCode" 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; %> <input type="hidden" name="validationCode1" value="<%=intsum%>"> <input type="text" value="<%=intsum%>" readonly="true" size=2> <br> <input type="button" name="submit1" value="登录" onClick="mycheck()"> <input type="reset" value="重置"> </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=ISO-8859-1"> <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.getParameter("validationCode"))) { if(name.equals("lijing")&&(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" 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=ISO-8859-1"> <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 href="exit.jsp">[退出系统]</a> </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=ISO-8859-1"> <title>退出系统</title> </head> <body> <% session.invalidate(); response.sendRedirect("login.jsp"); %> </body> </html>
