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<title>新时代软件教程:操作系统 主页制作 服务器 设计软件 网络技术 编程语言 文字编辑</title>
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<p align="center"><script src="../../1.js"></script></a>
<p align="center"><big><strong>JSP的login程序代码</strong></big></p>
<div align="right">摘自互联网</div>
<p>
<!-- Login Manager --><br>
<br>
<JAVA TYPE="class"><br>
<br>
public static boolean checkUserPermission(HttpSession mySession, HttpServletRequest request, HttpServletResponse response)<br>
{<br>
<br>
if (mySession.getValue("hasPermission") == null || !((Boolean) mySession.getValue("hasPermission")).booleanValue())<br>
{<br>
String requestedUrl = HttpUtils.getRequestURL(request).toString();<br>
String queryString = request.getQueryString();<br>
if (queryString != null)<br>
{<br>
requestedUrl = requestedUrl + "?" + queryString;<br>
}<br>
requestedUrl = response.encodeUrl(requestedUrl);<br>
mySession.putValue("requestedUrl", requestedUrl);<br>
<br>
return false;<br>
}<br>
else<br>
{<br>
return true;<br>
}<br>
}<br>
<br>
</JAVA><br>
<br>
<%<br>
// THIS IS A JSP FILE<br>
<br>
String goodUser = "bill";<br>
String goodPass = "bobo";<br>
<br>
HttpSession mySession = request.getSession(true);<br>
<br>
String errorMessage = "Please Login To Access The Page You Requested";<br>
<br>
boolean loginAttempt = false;<br>
<br>
String myMethod = request.getMethod();<br>
if (request.getParameterValues("click") != null && request.getParameterValues("click")[0].trim().equals("Log In"))<br>
{<br>
loginAttempt = true;<br>
}<br>
<br>
<br>
if (loginAttempt)<br>
{<br>
String username = request.getParameterValues("user")[0].trim();<br>
String password = request.getParameterValues("pass")[0].trim();<br>
//out.println("username = |" + username + "| & password = |" + password + "|<BR>");<br>
<br>
if (goodUser.equals(username) && goodPass.equals(password))<br>
{<br>
response.sendRedirect((String)mySession.getValue("requestedUrl"));<br>
mySession.putValue("hasPermission", new Boolean(true));<br>
errorMessage = "Unable to redirect: " + (String)mySession.getValue("requestedUrl");<br>
}<br>
else<br>
{<br>
errorMessage = "You did not get the Username or Password right";<br>
}<br>
<br>
}<br>
else<br>
{<br>
errorMessage = "Haven't tried logging in yet.";<br>
if (mySession.getValue("requestedUrl") == null)<br>
{<br>
mySession.putValue("requestedUrl", "/index.jsp");<br>
}<br>
//out.println("set userReferrer to " + mySession.getValue("redirectTo") + "<BR>");<br>
}<br>
%><br>
<br>
<CENTER><br>
<font color=red><%=errorMessage%></font><br>
<TABLE align=center><br>
<FORM action="adminLogin2.jsp" method=post name="login"><br>
<TR><TD>Username:</TD><TD><input type=text name=user value=""></TD></TR><br>
<TR><TD>Password:</TD><TD><input type=password name=pass value=""></TD></TR><br>
<TR><TD colspan=2 align=center><input type=submit name=click value="Log In"></TD></TR><br>
</FORM><br>
<br>
</TABLE><br>
</CENTER><br>
Original URL: <%= (String)mySession.getValue("requestedUrl") %><br>
<br>
<script language="javascript"><br>
// <!--<br>
if (document.forms.login != null)<br>
document.forms.login.user.focus();<br>
// --><br>
</script></p>
</table>
<p align="center"><script src="../../2.js"></script></a>
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