CORSResponseFilter.java

package ungp.sampleng.backend.filter;


import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerResponseContext;
import javax.ws.rs.container.ContainerResponseFilter;
import javax.ws.rs.core.MultivaluedMap;
import java.io.IOException;

public class CORSResponseFilter
        implements ContainerResponseFilter {

    public void filter(ContainerRequestContext requestContext, ContainerResponseContext responseContext)
            throws IOException {

        MultivaluedMap<String, Object> headers = responseContext.getHeaders();
        headers.add("Access-Control-Allow-Origin", "*");
        headers.add("Access-Control-Allow-Headers", "origin, content-type, accept, authorization");
        headers.add("Access-Control-Allow-Credentials", "true");
        headers.add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, HEAD");
        headers.add("Access-Control-Max-Age", "1209600");
    }

}