You don’t even need ResponseEntitys! Just use getForObject with a String.class like: final RestTemplate restTemplate = new RestTemplate(); final String response = restTemplate.getForObject(“https://httpbin.org/ip”, String.class); System.out.println(response); It will print something like: { “origin”: “1.2.3.4” }
I worked around this using the following generic method: public <T> List<T> exchangeAsList(String uri, ParameterizedTypeReference<List<T>> responseType) { return restTemplate.exchange(uri, HttpMethod.GET, null, responseType).getBody(); } Then I could call: List<MyDto> dtoList = this.exchangeAsList(“http://my/url”, new ParameterizedTypeReference<List<MyDto>>() {}); This did burden my callers with having to specify the ParameterizedTypeReference when calling, but meant that I did not have to … Read more
The error that you get does not seem to be related to the RequestHeader. And you seem to be confusing Spring REST services with JAX-RS, your method signature should be something like: @RequestMapping(produces = “application/json”, method = RequestMethod.GET, value = “data”) @ResponseBody public ResponseEntity<Data> getData(@RequestHeader(value=”User-Agent”) String userAgent, @RequestParam(value = “ID”, defaultValue = “”) String id) … Read more
Don’t write any Interceptors, Filters, Components, Aspects, etc., this is a very common problem and has been solved many times over. Spring Boot has a modules called Actuator, which provides HTTP request logging out of the box. There’s an endpoint mapped to /trace (SB1.x) or /actuator/httptrace (SB2.0+) which will show you last 100 HTTP requests. … Read more