📄 sessionadmin.jsp
字号:
<%!
static final String PREFIX_LABEL="SessionTest";
private String removePrefix(String name) {
if (name.startsWith(PREFIX_LABEL))
name = name.substring(PREFIX_LABEL.length());
return name;
}
private String addPrefix(String name) {
if (!name.startsWith(PREFIX_LABEL))
name = PREFIX_LABEL + name;
return name;
}
%>
<%@ page contentType="text/html; charset=GB2312" %>
<%@ page import="java.util.*" %>
<%@ page language="java" %>
<html>
<head>
<title>管理Session变量</title>
</head>
<body>
<center>
<font size=5 color=#DB1260>
管理Session变量
</font>
<BR>
<HR>
<BR>
<%
if (request.getParameter("AddValue") != null) {
session.setAttribute(addPrefix(request.getParameter("NameField")),
request.getParameter("ValueField"));
} else if (request.getParameter("DeleteValue") != null) {
session.removeAttribute(addPrefix(request.
getParameter("NameField")));
}
%>
<center>
<table border=1 cellspacing=2 cellpadding=5 width=400 bgcolor=#EEEEEE>
<th colspan=2>Session
</th>
<tr>
<td><B>变量名</B></td>
<td><B>变量值</B></td>
</tr>
<%
Enumeration sessionNames = session.getAttributeNames();
String name;
while (sessionNames.hasMoreElements()) {
name = (String)sessionNames.nextElement();
%>
<tr>
<td><%= removePrefix(name) %></td>
<td><%= (String)session.getAttribute(name) %></td>
</tr>
<%
} // end of while loop for session names
%>
</table>
</center>
<p>
<form method="post" name="SessionTest"
action="SessionTest.jsp">
<center>
<table border=0 cellspacing=2 cellpadding=5 width=400>
<th>变量名</th>
<th>变量值</th>
<tr>
<td><input type="text" name="NameField"></td>
<td><input type="text" name="ValueField"></td>
</tr>
<tr>
<td colspan=2 align=center><input type="submit"
value=" Add " name="AddValue"></td>
</tr>
<tr>
<td colspan=2 align=center><input type="submit"
value="Delete" name="DeleteValue"></td>
</tr>
</table>
</center>
</form>
</font>
</font>
</center>
</body>
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