Dear guys,
I searched the archive and the Usenet without success.
I'm using a box with:
- Linux Red Hat 7.2
- Apache 1.3.20
- mod_jk (ajp13)
- Tomcat 3.3
I developed a web application that let you browse through some static HTML
pages and let you update the content of these HTML page, inserting some data
in a form.
The update of the static pages is done by a servlet that rewrite the HTML
file. The problem is that I can't get the last updated HTML page in my
browser.
I thought it was a problem realted to caching, so I forced Apache to set the
"Expires" header writing in the httpd.conf:
#ExpiresActive On
#ExpiresByType text/html "access"
but this solution didn't help.
I turned on a protocol analyzer (Etheral) to try and understand what the
problem was and I realized that Apache does not set the "Expires" header
when the HTML page comes from Tomcat.
I think my application is not so strange: I want to save the new data
inserted by the user so that the next time she requests the page she gets
the last version of it.
I wrote another very simple application to explain my problem better, simply
copy the following files under $TOMCAT_HOME/webapps/ and compile the
servlet:
===============
test/index.html
===============
<html>
<head>
</head>
<body>
<a href="servlet/DateServlet">Test</a><br>
</body>
</html>
=====================================
test/WEB-INF/classes/DateServlet.java
=====================================
import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class DateServlet extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse
response) throws IOException, ServletException {
try {
Date now = new Date();
PrintWriter dateWriter = new PrintWriter(new
FileWriter("../webapps/test/date.html"), true);
dateWriter.println(now);
dateWriter.println("<br>");
dateWriter.println("<a
href=\"servlet/DateServlet\">Update</a>");
dateWriter.close();
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println(now);
out.println("<meta http-equiv='refresh' content='3;
url=\"/test/date.html\"'></meta>");
} catch(Exception ex) {
PrintWriter errorWriter = new PrintWriter(new
FileWriter("../webapps/bib/error.txt"), true);
ex.printStackTrace(errorWriter);
errorWriter.close();
}
}
}
Did anyone else experiment such problems?
Cheers,
Michele
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