java Spring引导resttemplate get请求发现401个未经授权的异常

Question

以下代码段接收到未经授权的异常：

String uri = "https://api/example.json?status=all";
RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
HttpEntity entity = new HttpEntity(headers);
ResponseEntity <String> results = restTemplate.exchange(uri, HttpMethod.GET, entity, String.class;