spring RestTemplate Using Basic Authentication with HttpComponent's HttpClient
Example
Using HttpClient as RestTemplate's underlying implementation to create HTTP requests allows for automatic handling of basic authentication requests (an http 401 response) when interacting with APIs. This example shows how to configure a RestTemplate to achieve this.
// The credentials are stored here
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(
// AuthScope can be configured more extensively to restrict
// for which host/port/scheme/etc the credentials will be used.
new AuthScope("somehost", AuthScope.ANY_PORT),
new UsernamePasswordCredentials("username", "password"));
// Use the credentials provider
HttpClientBuilder builder = HttpClientBuilder.create();
builder.setDefaultCredentialsProvider(credsProvider);
// Configure the RestTemplate to use HttpComponent's HttpClient
ClientHttpRequestFactory requestFactory =
new HttpComponentsClientHttpRequestFactory(builder.build());
RestTemplate restTemplate = new RestTemplate(requestFactory);
