Keycloak admin API throwing 401 Unauthorized error #16343

viruls · 2023-01-09T18:35:59Z

viruls
Jan 9, 2023

Hi There,

I am getting 401 Unauthorized error while accessing the ADMIN API , Could you please advise where I am doing wrong,

        RestTemplate restTemplate = new RestTemplate();
	System.out.println("get mapping page...");
	HttpHeaders headers = new HttpHeaders();
	// headers.add("Content-Type", "*/*");
	// headers.add("Authorization", "Bearer "+accessToken);
	headers.setBearerAuth(accessToken);
	HttpEntity<String> request = new HttpEntity<String>(headers);
	String url = "http://localhost:8080/admin/realms/myrealm/users/" + userId + "/sessions";
	ResponseEntity<String> response = restTemplate.getForEntity(url, String.class, request);

Please note while using Postman I am not seeing this issue which means I am able to get the corresponding user's session.

Also, attaching DEBUG logs from KeyCloak for your reference where I can see the error message,
Error response 401: javax.ws.rs.NotAuthorizedException: HTTP 401 Unauthorized

Please advise.

Thanks !!!

viruls · 2023-01-09T18:45:59Z

viruls
Jan 9, 2023
Author

0 replies

viruls · 2023-01-09T18:55:00Z

viruls
Jan 9, 2023
Author

Also posting here the snippet which I used to generate access_token,

            RestTemplate restTemplate = new RestTemplate();
	HttpHeaders headers = new HttpHeaders();
	headers.add("Content-Type", "application/x-www-form-urlencoded");
	MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
	map.add("client_id", clientId);
	map.add("client_secret", clientSecret);
	map.add("grant_type", grantType);
	map.add("scope", "openid");
	HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(map, headers);
	ResponseEntity<String> response = restTemplate.postForEntity(tokenUrl, request, String.class);
	String tr = response.getBody();
	System.out.println("success....." + tr);
	JSONParser parser = new JSONParser();
	String accessToken = "";
	try {
		Object obj = parser.parse(tr);
		JSONObject jsonObject = (JSONObject) obj;
		accessToken = (String) jsonObject.get("access_token");
		System.out.println(accessToken);
	} catch (ParseException e) {

0 replies

viruls · 2023-01-09T19:24:36Z

viruls
Jan 9, 2023
Author

Fixed by Changing the below line from

ResponseEntity<String> response = restTemplate.getForEntity(url, String.class, request);

to

ResponseEntity response = restTemplate.exchange(url, HttpMethod.GET, new HttpEntity(headers),
String.class);

0 replies

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Keycloak admin API throwing 401 Unauthorized error #16343

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