Get Active Tasks from Backend - 401

[anakin59490]

I use Alfresco 6 with 2 backend (alfresco and spring-boot).

I try to retrieve active tasks for specific user from spring-boot backend  (in this example, user "acc1")  but I get "401" issue :

This is the  complete request :

http://localhost:8080/alfresco/service/api/task-instances?authority=acc1&properties=wfvd_nomService,... 

When it's called from angular fronted, it works.

Here is my code :

public ResponseEntity<AlfrescoResponse> callAlfrescoBackEnd(String url) {
             logger.info("url: " + url);
             headers = new HttpHeaders();
             headers.setAccept(Arrays.asList(MediaType.APPLICATION_JSON));
             headers.setContentType(MediaType.APPLICATION_JSON);
               entity = new HttpEntity<String>(headers);
          return restTemplate.exchange(url, HttpMethod.GET, entity, AlfrescoResponse.class);
}

How can I solve it ?

[anakin59490]

I think I should add autorization element in header:

java - How to retrieve Activiti task-form using REST? - Stack Overflow 

But How retrieve the value ?