DO NOT REPLY [Bug 7942] New: - test for a Filter wrapping a servlet fails

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=7942

test for a Filter wrapping a servlet fails

           Summary: test for a Filter wrapping a servlet fails
           Product: Tomcat 4
           Version: Nightly Build
          Platform: PC
        OS/Version: Windows NT/2K
            Status: NEW
          Severity: Critical
          Priority: Other
         Component: Catalina
        AssignedTo: [EMAIL PROTECTED]
        ReportedBy: [EMAIL PROTECTED]


The folowing Filter should add some discription (a html table) as part of the 
response. But the response lost that part.

public class FilterWEG extends GenericFilter
{

    public FilterWEG () {
        log("FilterWEG initialized");
    }

    public void doFilter(final ServletRequest request, final ServletResponse 
response, FilterChain chain) throws java.io.IOException,
    javax.servlet.ServletException
    {
        String message = "Filtered !";
        GenericResponseWrapper wrapper = new GenericResponseWrapper
((HttpServletResponse)response);
        chain.doFilter(request, wrapper);
        ServletOutputStream out = response.getOutputStream();
        //message = getFilterConfig().getInitParameter("message");

        ByteArrayOutputStream respStream = manipulateResp(wrapper.output());
        response.setContentLength(respStream.size());
        response.setContentType("text/html");
        out.write(respStream.toByteArray());
        // the following should appear in the response
        out.println("<p><p>");
        out.println("<p>This table is generated from the FilterWEGS<p>");
        out.println("<table BORDER COLS=2 WIDTH=\"100%\" NOSAVE >");
        out.println("<tr>");
        out.println("<td>Test Name:</td>");
        out.println("<td>FilterERES</td>");
        out.println("</tr>");
        out.println("<tr>");
        out.println("<td>CharacterEncoding:</td>");
        out.println("<td>"+response.getCharacterEncoding()+"</td>");
        out.println("</tr>");
        out.println("<tr>");
        out.println("<td>Result:</td>");
        out.println("<td>The content before this table should be all 
capital</td>");
        out.println("</tr>");
        out.println("<tr>");
        out.println("<td>Author:</td>");
        out.println("<td>James</td>");
        out.println("</tr>");
        out.println("</table>");
        out.println("</body>");
        out.println("</html>");

        out.flush();
        out.close();
    }
    
    public ByteArrayOutputStream manipulateResp(byte[] respData) throws 
ServletException
    {
        //change every character in the response to higher case

        int i;
        int o;
        char a='a';
        char A='A';
        int diff = A-a;
        ByteArrayInputStream readStream;
        ByteArrayOutputStream respStream;
        respStream = new ByteArrayOutputStream();
        
        try{
        readStream = new ByteArrayInputStream(respData);
        
        do {
            i = readStream.read();
           
            //log("get char:"+((char) i));
            //log("FilterWEG 125: read readStream");
            if (i != -1) 
                {
                    if ( (((char) i)>='a')&&(((char) i)<='z') )
                        {
                            o= i+diff;
                            respStream.write(o);
                        }
                    else
                        {
                            respStream.write(i);
                        }
                }
        } while (i != -1);
        
        readStream.close();
        
        }
        catch (IOException e)
            {
                System.out.println("IOExcption:" + e);
            }

        return respStream;
    }
}


This filter is mapped to a servlet named FilterWEGServlet (which is just a 
single line printout). But the output does not contain the "table" add in the 
filter.

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