D:\GeoServer 2.14.2\webapps\geoserver\WEB-INF\web.xml

一处

<!-- Uncomment following filter to enable CORS -->
   <filter>
        <filter-name>cross-origin</filter-name>
        <filter-class>org.eclipse.jetty.servlets.CrossOriginFilter</filter-class>
    </filter>

另一处

<!-- Uncomment following filter to enable CORS -->
    <filter-mapping>
        <filter-name>cross-origin</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>