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Why the SnoopServlet in Tomcat 3.2.1 doesn't compile?

 
Sam Zheng
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Posts: 61
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I couldn't figure out why the SnoopServlet.java that comes with
Tomcat 3.2.1 doesn't compile. The compiler complains about
that the parameter "context", which is a ServletContext, doesn't
have a method "getInitParameterNames()", among other things.
I have also tried to directly call the SnoopServlet.class that
comes together with Tomcat3.2.1, then it gives me an Error 500
message. Would any kind soul please help me out? I am enclosing
the SnoopServlet.java as follow:
/* $Id: SnoopServlet.java,v 1.3 1999/10/15 21:31:49 duncan Exp $
*
*/
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.*;
import javax.servlet.http.*;
/**
*
*
* @author James Duncan Davidson <duncan@eng.sun.com>
* @author Jason Hunter <jch@eng.sun.com>
*/
public class SnoopServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
{
PrintWriter out = response.getWriter();
response.setContentType("text/plain");
out.println("Snoop Servlet");
out.println();
out.println("Servlet init parameters:");
Enumeration e = getInitParameterNames();
while (e.hasMoreElements()) {
String key = (String)e.nextElement();
String value = getInitParameter(key);
out.println(" " + key + " = " + value);
}
out.println();
out.println("Context init parameters:");
ServletContext context = getServletContext();
Enumeration enum = context.getInitParameterNames();
while (enum.hasMoreElements()) {
String key = (String)enum.nextElement();
Object value = context.getInitParameter(key);
out.println(" " + key + " = " + value);
}
out.println();
out.println("Context attributes:");
enum = context.getAttributeNames();
while (enum.hasMoreElements()) {
String key = (String)enum.nextElement();
Object value = context.getAttribute(key);
out.println(" " + key + " = " + value);
}
out.println();

out.println("Request attributes:");
e = request.getAttributeNames();
while (e.hasMoreElements()) {
String key = (String)e.nextElement();
Object value = request.getAttribute(key);
out.println(" " + key + " = " + value);
}
out.println();
out.println("Servlet Name: " + getServletName());
out.println("Protocol: " + request.getProtocol());
out.println("Scheme: " + request.getScheme());
out.println("Server Name: " + request.getServerName());
out.println("Server Port: " + request.getServerPort());
out.println("Server Info: " + context.getServerInfo());
out.println("Remote Addr: " + request.getRemoteAddr());
out.println("Remote Host: " + request.getRemoteHost());
out.println("Character Encoding: " + request.getCharacterEncoding());
out.println("Content Length: " + request.getContentLength());
out.println("Content Type: "+ request.getContentType());
out.println("Locale: "+ request.getLocale());
out.println("Default Response Buffer: "+ response.getBufferSize());
out.println();
out.println("Parameter names in this request:");
e = request.getParameterNames();
while (e.hasMoreElements()) {
String key = (String)e.nextElement();
String[] values = request.getParameterValues(key);
out.print(" " + key + " = ");
for(int i = 0; i < values.length; i++) {
out.print(values[i] + " ");
}
out.println();
}
out.println();
out.println("Headers in this request:");
e = request.getHeaderNames();
while (e.hasMoreElements()) {
String key = (String)e.nextElement();
String value = request.getHeader(key);
out.println(" " + key + ": " + value);
}
out.println();
out.println("Cookies in this request:");
Cookie[] cookies = request.getCookies();
for (int i = 0; i < cookies.length; i++) {
Cookie cookie = cookies[i];
out.println(" " + cookie.getName() + " = " + cookie.getValue());
}
out.println();
out.println("Request Is Secure: " + request.isSecure());
out.println("Auth Type: " + request.getAuthType());
out.println("HTTP Method: " + request.getMethod());
out.println("Remote User: " + request.getRemoteUser());
out.println("Request URI: " + request.getRequestURI());
out.println("Context Path: " + request.getContextPath());
out.println("Servlet Path: " + request.getServletPath());
out.println("Path Info: " + request.getPathInfo());
out.println("Path Trans: " + request.getPathTranslated());
out.println("Query String: " + request.getQueryString());
out.println();
HttpSession session = request.getSession();
out.println("Requested Session Id: " +
request.getRequestedSessionId());
out.println("Current Session Id: " + session.getId());
out.println("Session Created Time: " + session.getCreationTime());
out.println("Session Last Accessed Time: " +
session.getLastAccessedTime());
out.println("Session Max Inactive Interval Seconds: " +
session.getMaxInactiveInterval());
out.println();
out.println("Session values: ");
Enumeration names = session.getAttributeNames();
while (names.hasMoreElements()) {
String name = (String) names.nextElement();
out.println(" " + name + " = " + session.getAttribute(name));
}
}
}
 
William Brogden
Author and all-around good cowpoke
Rancher
Posts: 13058
6
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The only possibility I can think of is that you have an old JSDK jar file somewhere on your system that the compiler is finding first. I wasted days on a bizarre error message like this for that reason.
Bill
 
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