I am having trouble with a servlet in Netscape v 4.76.
I am running Red Hat Linux 7.2. Thus far I have had
no luck in finding a solution in the archives or
elsewhere.
The servlet (code included below) calls another class
that generates a JPG and outputs it to a file. A link
to the temporary image file is supposed to be
displayed on the page, but instead I get a pop-up
displaying "The document contains no data".
I have verified that the servlet is generating the
image and placing it in my /tmp folder. I have also
tested it by outputting the image to
$CATALINA_HOME/temp.
Any assistance that you can provide would be greatly
appreciated!!
CODE...
import java.io.*;
import java.text.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import duke.cgt.bard.apps.SimpleBardApplication;
public class BARD extends HttpServlet {
static final String PATH =
"/home/www/pkg/jakarta-tomcat-4.0.6/temp/";
static String datafile;
public void doBard(String file) {
String[] temp = new String[6];
temp[0] = "-d";
temp[1] = file;
temp[2] = "-type";
temp[3] = "ie";
temp[4] = "-o";
temp[5] = PATH+"bard.jpg";
try {
SimpleBardApplication.main(temp);
}catch(Exception e) {
e.printStackTrace();
}
}
public void doGet(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
{
datafile = request.getParameter("datafile");
datafile = PATH + datafile;
PrintWriter out = response.getWriter();
response.setContentType("text/html");
response.setHeader("pragma", "no-cache");
out.println("<html>");
out.println("<body>");
out.println("<head>");
out.println("<title>BARD Demo</title>");
out.println("</head>");
out.println("<body bgcolor=\"white\">");
out.println("<H1>BARD Demo</H1>");
out.println("This is the image file " +datafile);
out.println("</body>");
out.println("</html>");
this.doBard(datafile);
}
public void doPost(HttpServletRequest request,
HttpServletResponse response)
throws IOException, ServletException
{
doGet(request, response);
}
}
Thanks
Rus
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