Whether it is possible to write AOP for Spring RestTemplate class and any external jar classes using spring AOP or Aspectj

Question

Is it possible to write AOP for Spring RestTemplate class using spring AOP or Aspectj. EX:

@Around("execution(* org.springframework.web.client.RestTemplate.getFor*(..))")

Thanks

[The AspectJ Development Environment Guide](http://www.eclipse.org/aspectj/doc/released/devguide/). You'll need to decide if you want to go with compile-time weaving vs load-time weaving. If you can, go with compile-time weaving. For compile-time weaving, refer to http://www.mojohaus.org/aspectj-maven-plugin/. For load-time weaving, refer to http://www.eclipse.org/aspectj/doc/released/devguide/ltw-configuration.html — Nándor Előd Fekete, Nov 04 '16 at 17:11
I have tried load-time weaving. Still I couldn't write AOP for "org.springframework.web.client.RestTemplate." class. Reference [link](http://www.codesenior.com/en/tutorial/AspectJ-Load-Time-Weaving-in-Spring). — thangavel vel, Nov 12 '16 at 15:44

score 2 · Answer 1 · answered Dec 22 '16 at 15:24

I had the same issue and couldn't make it work with AOP.

However, in this case, there is a workaround. Since RestTemplate extends InterceptingHttpAccessor, you can intercept all requests coming through theRestTemplate object.

Sample configuration that logs all HTTP requests :

@Bean
public RestTemplate restTemplate() {

    RestTemplate restTemplate = new RestTemplate();

    // (...)
    // setup code for the RestTemplate object

    restTemplate.getInterceptors().add((request, body, execution) -> {
        logger.info("HTTP {} request to {}", request.getMethod(), request.getURI());
        return execution.execute(request, body);
    });

    return restTemplate;
}

While this is not equivalent to using an aspect, you can get similar functionality with interceptors and pretty minimal configuration.

Whether it is possible to write AOP for Spring RestTemplate class and any external jar classes using spring AOP or Aspectj

1 Answers1