Override the url in a spring RestTemplate intercepting the request

UrlOverriderInterceptor.java

/**
 * @author luismoramedina
 */
public class UrlOverriderInterceptor implements ClientHttpRequestInterceptor {

    private final String urlBase;

    public UrlOverriderInterceptor(String urlBase) {
        this.urlBase = urlBase;
    }

    private static Logger LOGGER = AppLoggerFactory.getLogger(UrlOverriderInterceptor.class);

    @Override
    public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
        URI uri = request.getURI();
        LOGGER.warn("overriding {0}", uri);

        return execution.execute(new MyHttpRequestWrapper(request), body);

    }

    private class MyHttpRequestWrapper extends HttpRequestWrapper {
        public MyHttpRequestWrapper(HttpRequest request) {
            super(request);
        }

        @Override
        public URI getURI() {
            try {
                return new URI(UrlUtils.composeUrl(urlBase, super.getURI().toString()));
            } catch (URISyntaxException e) {
                throw new RuntimeException(e);
            }
        }
    }
}