Connect to a https site with a given p12 certificate

Question

The server side gave me a .p12 certificate file which I\'ve clicked and installed on my machine and then I can access the HTTPS site through browse

Answer 1

In case you are using Spring, it could be reached by RestTemplate:

public RestTemplate restTemplate() throws Exception {
    KeyStore clientStore = KeyStore.getInstance("PKCS12");
    InputStream resource = this.getClass().getClassLoader().getResourceAsStream("path_to_certificate.p12");
    clientStore.load(resource, "p12_password".toCharArray());

    SSLContextBuilder sslContextBuilder = new SSLContextBuilder();
    sslContextBuilder.setProtocol("TLS");
    sslContextBuilder.loadKeyMaterial(clientStore, "p12_password".toCharArray());
    sslContextBuilder.loadTrustMaterial(new TrustSelfSignedStrategy());

    SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslContextBuilder.build());
    CloseableHttpClient httpClient = HttpClients.custom()
        .setSSLSocketFactory(sslConnectionSocketFactory)
        .build();
    HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory(httpClient);
    return new RestTemplate(requestFactory);
}