Read the response body in an Android Spring Interceptor
android, inputstream, interceptor, java, spring
Solution
To allow for multiple `response.getBody()` calls wrap your ClientHttpRequestFactory in a BufferingClientHttpRequestFactory.
ClientHttpRequestFactory requestFactory =
new BufferingClientHttpRequestFactory(new SimpleClientHttpRequestFactory());
restTemplate.setRequestFactory(requestFactory);
Problem
I'm using a simple Spring Interceptor class to log all REST requests/responses for the RestTemplate object in my Android app. So far everything works fine. ``` public class LoggerInterceptor implements ClientHttpRequestInterceptor { @Override public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException { Log.d(TAG, "Request body: " + new String(body)); // ...more log statements... ClientHttpResponse response = execution.execute(request, body); Log.d(TAG, "Response Headers: " + response.getHeaders()); return response; } ``` At initialization I call: ``` List<ClientHttpRequestInterceptor> interceptors = new ArrayList<ClientHttpRequestInterceptor>(); LoggerInterceptor loggerInterceptor = new LoggerInterceptor(); interceptors.add(loggerInterceptor); restTemplate.setInterceptors(interceptors); ``` However I cannot log `response.getBody()` in the method above because the InputStream gets consumed once and throws an IllegalStateException when it is consumed again later. Is there a way around this so that I can log the response body too?