First, you need to save the status code in an accessible place. The best to wrap the response with your implementation and keep it there:
public class StatusExposingServletResponse extends HttpServletResponseWrapper { private int httpStatus; public StatusExposingServletResponse(HttpServletResponse response) { super(response); } @Override public void sendError(int sc) throws IOException { httpStatus = sc; super.sendError(sc); } @Override public void sendError(int sc, String msg) throws IOException { httpStatus = sc; super.sendError(sc, msg); } @Override public void setStatus(int sc) { httpStatus = sc; super.setStatus(sc); } public int getStatus() { return httpStatus; } }In order to use this wrapper, you need to add a servlet filter, were you can do your reporting:
public class StatusReportingFilter implements Filter { public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { StatusExposingServletResponse response = new StatusExposingServletResponse((HttpServletResponse)res); chain.doFilter(req, response); int status = response.getStatus(); // report } public void init(FilterConfig config) throws ServletException { //empty } public void destroy() { // empty } }
