java - cache control on subdomain in Tomcat 7 -


i can handle cache on core domain (www.domain.com) using below filter 

public class cachecontrol implements filter{      filterconfig filterconfig;      public cachecontrol() {         filterconfig = null;     }      @override     public void init(filterconfig filterconfig) throws servletexception {         this.filterconfig = filterconfig;     }      @override     public void dofilter(servletrequest request, servletresponse response, filterchain chain) throws ioexception, servletexception {          string scache = filterconfig.getinitparameter("cache");         if (scache != null) {             date _currentdate = new date();             ((httpservletresponse) response).setheader("cache-control", scache);             ((httpservletresponse) response).setheader("expires", new date(_currentdate.getyear(), _currentdate.getmonth(), _currentdate.getdate() + 10).tostring());             ((httpservletresponse) response).setheader("x-content-type-options", "nosniff");             ((httpservletresponse) response).setheader("x-xss-protection", "1; mode=block");             ((httpservletresponse) response).setheader("x-frame-options", "sameorigin");             ((httpservletresponse) response).setheader("x-ua-compatible", "ie=edge, chrome=1");         }         chain.dofilter(request, response);     }      @override     public void destroy() {         filterconfig = null;     } }

but put static content javascripts, css, images on (static.domain.com) , want set expiry header content coming static domain. googled there no perfect solution. please me set expiry header static domain....


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