Désactivation de la validation de certificat SSL dans Spring RestTemplate

Question

J'ai deux applications Web basées sur Spring A et B, sur deux machines différentes.

Je souhaite passer un appel https de l'application Web A vers l'application Web B, mais j'utilise un certificat auto-signé dans la machine B. Ma demande HTTPS échoue donc.

Comment désactiver la validation du certificat https lors de l'utilisation de RestTemplate au printemps ? Je souhaite désactiver la validation car les applications Web A et B se trouvent toutes deux dans le réseau interne, mais le transfert de données doit se faire via HTTPS

Answer 1

@Bean
public RestTemplate restTemplate() 
                throws KeyStoreException, NoSuchAlgorithmException, KeyManagementException {
    TrustStrategy acceptingTrustStrategy = (X509Certificate[] chain, String authType) -> true;

    SSLContext sslContext = org.apache.http.ssl.SSLContexts.custom()
                    .loadTrustMaterial(null, acceptingTrustStrategy)
                    .build();

    SSLConnectionSocketFactory csf = new SSLConnectionSocketFactory(sslContext);

    CloseableHttpClient httpClient = HttpClients.custom()
                    .setSSLSocketFactory(csf)
                    .build();

    HttpComponentsClientHttpRequestFactory requestFactory =
                    new HttpComponentsClientHttpRequestFactory();

    requestFactory.setHttpClient(httpClient);
    RestTemplate restTemplate = new RestTemplate(requestFactory);
    return restTemplate;
 }

Answer 2

Essentiellement, deux choses que vous devez faire sont d'utiliser une TrustStrategy personnalisée qui fait confiance à tous les certificats et d'utiliser également NoopHostnameVerifier() pour désactiver la vérification du nom d'hôte. Voici le code, avec toutes les importations pertinentes :

 import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import javax.net.ssl.SSLContext;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

public RestTemplate getRestTemplate() throws KeyStoreException, NoSuchAlgorithmException, KeyManagementException {
    TrustStrategy acceptingTrustStrategy = (x509Certificates, s) -> true;
    SSLContext sslContext = org.apache.http.ssl.SSLContexts.custom().loadTrustMaterial(null, acceptingTrustStrategy).build();
    SSLConnectionSocketFactory csf = new SSLConnectionSocketFactory(sslContext, new NoopHostnameVerifier());
    CloseableHttpClient httpClient = HttpClients.custom().setSSLSocketFactory(csf).build();
    HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
    requestFactory.setHttpClient(httpClient);
    RestTemplate restTemplate = new RestTemplate(requestFactory);
    return restTemplate;
}

Answer 3

Ce que vous devez ajouter, c'est qu'une HostnameVerifier contourne la vérification du certificat et renvoie true

 HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier() {
    public boolean verify(String hostname, SSLSession session) {
        return true;
    }
});

Cela doit être placé de manière appropriée dans votre code.

Answer 4

Ajouter ma réponse avec cookie :

 public static void main(String[] args) {
     MultiValueMap<String, String> params = new LinkedMultiValueMap<>();
     params.add("username", testUser);
     params.add("password", testPass);
     NullHostnameVerifier verifier = new NullHostnameVerifier(); 
     MySimpleClientHttpRequestFactory requestFactory = new MySimpleClientHttpRequestFactory(verifier , rememberMeCookie);
     ResponseEntity<String> response = restTemplate.postForEntity(appUrl + "/login", params, String.class);

     HttpHeaders headers = response.getHeaders();
     String cookieResponse = headers.getFirst("Set-Cookie");
     String[] cookieParts = cookieResponse.split(";");
     rememberMeCookie = cookieParts[0];
     cookie.setCookie(rememberMeCookie);

     requestFactory = new  MySimpleClientHttpRequestFactory(verifier,cookie.getCookie());
          restTemplate.setRequestFactory(requestFactory);
}


public class MySimpleClientHttpRequestFactory extends SimpleClientHttpRequestFactory {

        private final HostnameVerifier verifier;
        private final String cookie;

        public MySimpleClientHttpRequestFactory(HostnameVerifier verifier ,String cookie) {
            this.verifier = verifier;
            this.cookie = cookie;
        }

        @Override
        protected void prepareConnection(HttpURLConnection connection, String httpMethod) throws IOException {
            if (connection instanceof HttpsURLConnection) {
                ((HttpsURLConnection) connection).setHostnameVerifier(verifier);
                ((HttpsURLConnection) connection).setSSLSocketFactory(trustSelfSignedSSL().getSocketFactory());
                ((HttpsURLConnection) connection).setAllowUserInteraction(true);
                String rememberMeCookie = cookie == null ? "" : cookie; 
                ((HttpsURLConnection) connection).setRequestProperty("Cookie", rememberMeCookie);
            }
            super.prepareConnection(connection, httpMethod);
        }

        public SSLContext trustSelfSignedSSL() {
            try {
                SSLContext ctx = SSLContext.getInstance("TLS");
                X509TrustManager tm = new X509TrustManager() {

                    public void checkClientTrusted(X509Certificate[] xcs, String string) throws CertificateException {
                    }

                    public void checkServerTrusted(X509Certificate[] xcs, String string) throws CertificateException {
                    }

                    public X509Certificate[] getAcceptedIssuers() {
                        return null;
                    }
                };
                ctx.init(null, new TrustManager[] { tm }, null);
                SSLContext.setDefault(ctx);
                return ctx;
            } catch (Exception ex) {
                ex.printStackTrace();
            }
            return null;
        }

    }


    public class NullHostnameVerifier implements HostnameVerifier {
           public boolean verify(String hostname, SSLSession session) {
              return true;
           }
        }

Answer 5

Code complet pour désactiver le vérificateur de nom d'hôte SSL,

 RestTemplate restTemplate = new RestTemplate();
//to disable ssl hostname verifier
restTemplate.setRequestFactory(new SimpleClientHttpRequestFactory() {
   @Override
    protected void prepareConnection(HttpURLConnection connection, String httpMethod) throws IOException {
        if (connection instanceof HttpsURLConnection) {
            ((HttpsURLConnection) connection).setHostnameVerifier(new NoopHostnameVerifier());
        }
        super.prepareConnection(connection, httpMethod);
    }
});