Servlet Filters : how many times a filter get executed for each reques

Question

<p>Hello I am fairly new to ServletFilters and I am experiencing a really annoying problem.</p> <p>I have filter that I want to check every request so if the user enters a uri I will check it and forward them somewhere but if I try to set a condition to check the uri and forward, it stops the filter from processing the rest of the images and they do not show up on the page. It looks like the filter is called for every image I load into memory too</p>here is the code :</p>
<pre>
public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest)req;
HttpServletResponse response = (HttpServletResponse)resp;
HttpSession session = request.getSession(true);
boolean flag = true;
RedirectInfo currentRedirect = null;
String uri = request.getRequestURI();
//If it is a first request I let them go to the first page
if(uri.equals("/home.jsp") || uri.equals("/") || uri.equals("/home.do")){
RequestDispatcher rd2 = request.getRequestDispatcher("/home.jsp");
rd2.forward(request, response);
System.out.println("in the first condition all is good");
return;
}else{
//This is to stop the filter from being called twice
if(currentRedirect != null && currentRedirect.equals("null")){
RequestDispatcher rd3 = request.getRequestDispatcher("/home.jsp");
rd3.forward(request, response);
return;
currentRedirect = RedirectManager.searchByRedirect(request.getRequestURI(), taskUid);
if(currentRedirect != null){
//Here we send the client to the requested URI if it exists in the database
RequestDispatcher rd = request.getRequestDispatcher(currentRedirect.getRedirect());
rd.forward(request, response);
//This is to stop the filter from being called twice
currentRedirect.setRedirect("null");
System.out.println("in the redirect condition all is good");
return;
if(currentRedirect == null){
RequestDispatcher rd1 = request.getRequestDispatcher("/home.jsp");
rd1.forward(request, response);
return;
System.out.println("the URI is: "+request.getRequestURI());
chain.doFilter(request, response);
</pre>
<br>
Any help would be great @;)
<br>
Steven Nelson

Answer 1

<p>Hello I am fairly new to ServletFilters and I am
experiencing a really annoying problem.</p> <p>I have
filter that I want to check every request so if the
user enters a uri I will check it and forward them
somewhere but if I try to set a condition to check the
uri and forward, it stops the filter from processing
the rest of the images and they do not show up on the
page. It looks like the filter is called for every
image I load into memory toodepends on the where the images resides. if they reside inside an director that the filter is mapped too, then upon every image the filter is called too. For every image inside a html document an new request is formed.