javax.ws.rs.ext.ReaderInterceptorContext#getProperty ( )源码实例Demo

@Override
public Object aroundReadFrom(ReaderInterceptorContext context) throws IOException, WebApplicationException {
    Object object = context.proceed();
    if (context.getProperty(EMPTY_PAYLOAD) != TRUE) {
        return object;
    }
    if (object instanceof Collection) {
        Collection<?> collection = (Collection<?>) object;
        if (collection.isEmpty()) {
            throw new EmptyPayloadException();
        }
    } else if (object instanceof Map) {
        Map<?, ?> map = (Map<?, ?>) object;
        if (map.isEmpty()) {
            throw new EmptyPayloadException();
        }
    } else if (object == null) {
        throw new EmptyPayloadException();
    }
    return object;
}
 

protected boolean isCacheControlValid(final ReaderInterceptorContext context,
                                      final CacheControl responseControl) {

    boolean valid =
        responseControl != null && !responseControl.isNoCache() && !responseControl.isNoStore();
    if (valid) {
        String clientHeader =
            (String)context.getProperty(CacheControlClientRequestFilter.CLIENT_CACHE_CONTROL);
        CacheControl clientControl = clientHeader == null ? null : CacheControl.valueOf(clientHeader);
        if (clientControl != null && clientControl.isPrivate() != responseControl.isPrivate()) {
            valid = false;
        }
    }
    return valid;
}