我们如何在spring中使用Http基本身份验证来使用rest api？

Question

I want to consume rest api from url with http basic authentication that returns a big json & then i want to parse that json without POJO to get some values out of it. How can i achieve that in java spring?

I know this is common question but i could not get proper solution that worked for me.

Please help me someone.

Answer 1

Using the Apache HttpClient, the following Client Code snipped has been copied from the following URL. The comments have been added by myself.

https://www.baeldung.com/httpclient-4-basic-authentication

HttpGet request = new HttpGet(URL_SECURED_BY_BASIC_AUTHENTICATION);

// Combine the user and password pair into the right format
String auth = DEFAULT_USER + ":" + DEFAULT_PASS;

// Encode the user-password pair string in Base64
byte[] encodedAuth = Base64.encodeBase64(
  auth.getBytes(StandardCharsets.ISO_8859_1));

// Build the header String "Basic [Base64 encoded String]"
String authHeader = "Basic " + new String(encodedAuth);

// Set the created header string as actual header in your request
request.setHeader(HttpHeaders.AUTHORIZATION, authHeader);

HttpClient client = HttpClientBuilder.create().build();
HttpResponse response = client.execute(request);

int statusCode = response.getStatusLine().getStatusCode();
assertThat(statusCode, equalTo(HttpStatus.SC_OK));