Need to intercept the PUT calls from client with the header of manipulation

Question

I have a written a jetty http proxy server, in that i need to intercept the PUT calls from client with the header of manipulation.

when I refer jetty there is some fixes in jetty to handle issue (100-continue) header, so I thought it is useful for my request to interrupt and manipulate the request. can anyone please suggest how to implement this logic's in my java code.

Answer 1

This is possible via Filter Interface, you need to implement the interface and do your logic inside the doFilter method as per below code sample.

public class HttpFilter implements Filter
{
  public void doFilter(ServletRequest request, ServletResponse response,
       FilterChain filterChain) throws IOException, ServletException
   {
       HttpServletRequest httpRequest = (HttpServletRequest) request;        
       if(httpRequest.getMethod().equalsIgnoreCase("PUT")){

       }
       filterChain.doFilter(request, response);
   }
    // other methods etc
}

Then you need to make sure you declare your filter and filter-mapping entries inside web.xml