jsp第四周作业-2 

<%@ 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%>">
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<TITLE>登录验证</TITLE>
<STYLE type="text/css">
td{font-size:12px}
</STYLE>
<SCRIPT type="text/javascript">
function checkLogin(){
    var userName=document.myform.userid.value;
    var userPass=document.myform.passwd.value;
    var vegName=/^[a-zA-Z0-9]+$/;
    if(!vegName.test(userName)){
        alert("用户名错误，请重新输入");
        document.myform.userid.focus();
        return false;
    }
    var regPwd=/^\w{6,}$/; 
    if(!regPwd.test(userPass)){
        alert("密码输入错误，请重新输入");
        document.myform.passwd.select();
        return false;
    }
    return true;
}

</SCRIPT>
</HEAD>

<BODY>
<FORM NAME="myform" METHOD="POST" action="index.jsp" onSubmit=" checkLogin()">
<TABLE align="center">
<TR>
<TD>
<IMG src="images/Snap1.jpg"><DIV style="position:absolute; left: 490px; top: 216px; width: 356px;">
  <TABLE width="100%" height="100%" border=0 cellPadding=0 cellSpacing=0>
                   <TBODY>
                        <TR vAlign=top> 
                          <TD width="23%" 
                      height=27 align=right class=bld>用户名:&nbsp;</TD>
                          <TD height="27" align=left><INPUT TYPE="text" SIZE="20" NAME="userid"><BR>用户名由字母和数字组成</TD>
                     </TR>
                        <TR vAlign=top> 
                          <TD class=bld align=right height=27>密码:&nbsp;</TD>
                          <TD height="27" align=left><INPUT TYPE="password" SIZE="20" NAME="passwd"><BR>密码由字母、数字和下划线组成，至少6位</TD>
                     </TR>
                        <TR vAlign=top> 
                          <TD class=bld align=right height=40>&nbsp;</TD>
                            <TD  align=left valign="middle"><A href="#"><INPUT name="submit" type="image" src="images/login.gif" width="101" height="22" border="0" ></A> </TD>
                        </TR>
          </TABLE></DIV>
</TD>
</TR>
</TABLE>
</FORM>
</BODY>
</HTML>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%  
String name=request.getParameter("userid");
String upw=request.getParameter("passwd");
if(name.equals("lucky")&&upw.equals("123456")){

   request.getRequestDispatcher("cg.jsp").forward(request,response);
   
}else{

   request.getRequestDispatcher("sb.jsp").forward(request,response);

}

%>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
 
  <body>
    你好：lucky! <br>
  </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">
  <body>
  登陆失败！
   <form name="form1" method="post" action="yanzheng.jsp">
   <tr > 
                    <td colspan="2" align="center" > 
                          <input type="submit" name="Submit" value="重新登录">
    
                    </td>
                  </tr>
   </form>
  </body>
</html>

posted @ 2020-03-29 21:47  成长的蓝天下  阅读(124)  评论(0)  编辑  收藏  举报