gistfile1.txt

import org.apache.http.client.HttpClient;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.security.oauth2.client.OAuth2RestTemplate;

import javax.net.ssl.SSLContext;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

public class CustomOAuth2RestTemplate {

    public OAuth2RestTemplate createOAuth2RestTemplate() throws Exception {
        // Create an SSL context that trusts all certificates
        SSLContext sslContext = SSLContextBuilder
            .create()
            .loadTrustMaterial((chain, authType) -> true)
            .build();

        // Create an HttpClient with the NoopHostnameVerifier to bypass hostname checks
        HttpClient httpClient = HttpClients.custom()
            .setSSLContext(sslContext)
            .setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE)
            .build();

        // Use the HttpClient in the request factory
        HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
        requestFactory.setConnectTimeout(5000);
        requestFactory.setReadTimeout(10000);

        OAuth2RestTemplate restTemplate = new OAuth2RestTemplate();
        restTemplate.setRequestFactory(requestFactory);

        return restTemplate;
    }
}