javascript - Origin 'http://localhost:8888' is not allowed access with Gulp, Restangular, Java EE and Wildfly 8 -

the restangular works fine post() or get(), if want delete something, got following error:

no 'access-control-allow-origin' header present on requested resource. origin 'http://localhost:8888' therefore not allowed access.

i tried solution on site:

how enable cross domain requests on jax-rs web services?

@provider public class corsfilter implements containerresponsefilter {      @override     public void filter(final containerrequestcontext requestcontext,                        final containerresponsecontext cres) throws ioexception {          cres.getheaders().add("access-control-allow-origin", "*");         cres.getheaders().add("access-control-allow-headers", "origin, content-type, accept, authorization");         cres.getheaders().add("access-control-allow-credentials", "true");         cres.getheaders().add("access-control-allow-methods", "get, post, put, delete, options, head");         cres.getheaders().add("access-control-max-age", "1209600");     }  } 

but got following error:

the 'access-control-allow-origin' header contains multiple values 'http://localhost:8888, *', 1 allowed. origin 'http://localhost:8888' therefore not allowed access.

i don't quite understand error mean , how fix it? thanks!

the localhost:8888 defined in gulp.

the 'access-control-allow-origin' header must 'http://localhost:8888'

it explained in second answer in thread:
why jquery's .ajax() method not sending session cookie?