https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS
Access-Control-Allow-Origin: *
<filter>
<filter-name>CorsFilter</filter-name>
<filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
<init-param>
<param-name>cors.allowed.origins</param-name>
<param-value>*</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CorsFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
https://access.redhat.com/solutions/2839031
http://toptenstartups.com/question/access-control-allow-origin-to-wildfly-8-1-0-configuration/