Her is an example of such a servlet (this one does parse static files) :
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class StaticDocumentServer extends HttpServlet {
public void doGet( HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
doPost(request, response);
}
public void doPost( HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException {
response.setContentType("text/html");
PrintWriter pw = response.getWriter();
String path = getServletConfig().getServletContext().getRealPath("/");
String directory = getServletConfig().getInitParameter("directory");
String extraPath = request.getPathInfo();
StringBuffer sbuf = null;
try {
sbuf = new StringBuffer();;
BufferedReader bf = new BufferedReader(new FileReader(path +
directory +
extraPath));
String line;
while ((line = bf.readLine()) != null) {
sbuf.append(line);
}
}
catch (FileNotFoundException fnfe) {
sbuf = new StringBuffer();
sbuf.append("<html><body>Sorry, the page you requested does
not exist on
this server.</body></html>");
}
catch (IOException ioe) {
sbuf = new StringBuffer();
sbuf.append("<html><body>Sorry, a server error
occured.</body></html>");
}
finally {
pw.print(sbuf.toString());
}
}
}
Here is the corresponding web.xml :
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2.2.dtd";>
<web-app>
<servlet>
<servlet-name>jgr</servlet-name>
<servlet-class>StaticDocumentServer</servlet-class>
<init-param>
<param-name>directory</param-name>
<param-value>jgr</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>
jgr
</servlet-name>
<url-pattern>
/jgr/*
</url-pattern>
</servlet-mapping>
</web-app>
Now, if you access http://www.mydomain.com/jgr/mydoc.html you get exactly
what you asked for.
Pierre-Yves
-----Message d'origine-----
De : A mailing list for discussion about Sun Microsystem's Java Servlet
API Technology. [mailto:[EMAIL PROTECTED]]De la part de
Marco Trevisan
Envoy� : jeudi 12 juillet 2001 14:11
� : [EMAIL PROTECTED]
Objet : Re: url mapping
"Pierre-Yves Saumont" <[EMAIL PROTECTED]> wrote:
> Or you might use your servlet to display the static file, using the extra
> path information.
>
Well, a web server like Apache isn't tuned just to accomplish this work?
Serving static files isn't an unnecessary burden to a JVM ?
> This technique can be use to map a directory to a servlet. You can then
> access all document in this directory (and subdiretories) with their
static
> path, altough the document are served by the servlet. For example, when a
> user request :
>
> http://www.mydomain.com/jgr/mydoc.html
>
> he gets exactly what he asked for (document mydoc.html in directory jgr),
> but trough the servlet. The user never know he is accessing a servlet,
> altough you can use it to parse the contain of the file and do whatever
you
> want.
>
How can such kind of servlet locate files indenpently from servlet container
and operating system ?
Marco
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