Filter reading problem

Question

Hi
I'am sending xml data to servlet. I have created a filter where I check if the xml data is valid. I read filter request to a String and I send it to validation class (=valid variable in a code).
If everything is ok I call chain.doFilter(req, res), but servlet request has null content.
Program goes about like this
...public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException,ServletException{
   HttpServletRequest  request  = (HttpServletRequest)req;
   HttpServletResponse response = (HttpServletResponse)res;
   String contentText = readContent(request);
   if (valid.isValid(content))
             chain.doFilter(req, res);  
  public String readContent(HttpServletRequest req){
      String line=null;
      String content=null;
      try{
         BufferedReader in = new BufferedReader(new InputStreamReader (req.getInputStream()));
         while((line = in.readLine()) != null) {
              if (content == null)
                  content = line;
          else     
                  content = content + line;
          in.close();               
    catch (IOException ex){
        System.out.println("ERROR ....." + ex);
}So I don't change request (req) anyway. Can somebody tell me what is the problem ?.
Thanks ktu

Answer 1

You are reading all the bytes off the request input stream, so they are no longer there when you try to do the same in the servlet.