GlassFish: How to set Access-Control-Allow-Origin header

Question

I am using the latest version of GlassFish. I want to set the Access-Control-Allow-Origin header in response so that my API which is hosted on GlassFish can be called from a

Answer 1

In my case, the API requests are exclusively handled by Jersey, therefore I can set response headers in a ContainerResponseFilter:

package my.app;

import com.sun.jersey.spi.container.ContainerRequest;
import com.sun.jersey.spi.container.ContainerResponse;
import com.sun.jersey.spi.container.ContainerResponseFilter;

public class CrossOriginResourceSharingFilter implements ContainerResponseFilter {

    @Override
    public ContainerResponse filter(ContainerRequest creq, ContainerResponse cresp) {

        cresp.getHttpHeaders().putSingle("Access-Control-Allow-Origin", "*");
        cresp.getHttpHeaders().putSingle("Access-Control-Allow-Credentials", "true");
        cresp.getHttpHeaders().putSingle("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT");
        cresp.getHttpHeaders().putSingle("Access-Control-Allow-Headers", "Content-Type, Accept");

        return cresp;
    }
}

The filter gets enabled in web.xml:

    Gateway Servlet
    com.sun.jersey.spi.container.servlet.ServletContainer
    
        com.sun.jersey.spi.container.ContainerResponseFilters
        my.app.CrossOriginResourceSharingFilter
    
    1

If you don't use Jersey, I guess you can create a similar servlet response filter.