Enterprise Java

Skip SSL certificate verification in Spring Rest Template

How to skip SSL certificate verification while using Spring Rest Template? Configure Rest Template so it uses Http Client to create requests.

Note: If you are familiar with sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target the below should help you.

Http Client

Firstly, import HttpClient (>4.4), to your project

compile('org.apache.httpcomponents:httpclient:4.5.1')

Configure RestTemplate

Configure SSLContext using Http Client’s SSLContexts factory methods:

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);

org.apache.http.ssl.TrustStrategy is used to override standard certificate verification process. In the above example – it always returns true, so the certificate can be trusted without further verification.

The Test

@Test
public void opensSSLPage() throws Exception {
    String uri = "https://some-secured-page.com";
    ResponseEntity<String> entity = restTemplate.getForEntity(uri, String.class);
    assertThat(entity.getStatusCode().is2xxSuccessful()).isTrue();
}

Final Word

The above code helps in certain situations (e.g. testing against servers with self-signed certificates), but it should not be used in production – unless you are 100% sure what you are doing.

Rafal Borowiec

Software developer, Team Leader, Agile practitioner, occasional blogger, lecturer. Open Source enthusiast, quality oriented and open-minded.
Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

1 Comment
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
Jhon
Jhon
4 years ago

I have a question. Why spring restTemplate gives the facility to Bypass SSL certificate validation. If we can by pass then any body can access our rest service.

Back to top button