如何向 HttpsUrlConnection 指示它应该使用的证书（以前导入到 cacert 文件）

Question

I'm trying to consume a web service, in which we import a certificate to the JDK's cacert file. But I can't understand how to "set" the HttpsURLConnection object the cert that it must use to be able to execute the web service.

I read that once the certificate was installed in the cacert file, it was no longer necessary to indicate anything when connecting to the web service.

I am currently skipping the KeyStore and TrustStore validation to invoke the web service.

This is my code:

public void tokenFotoCteNOCHOProd(String url) throws IOException {
    HttpsURLConnection conn = null;
    String params = "";
    String res = "";
    try {
        TrustManager[] trustAllCerts = new TrustManager[] {
            new X509TrustManager() {
                @Override
                public void checkClientTrusted(java.security.cert.X509Certificate[] arg0, String arg1) throws CertificateException {
                    /**/
                }

                @Override
                public void checkServerTrusted(java.security.cert.X509Certificate[] arg0, String arg1) throws CertificateException {
                    /**/
                }

                @Override
                public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                    return null;
                }
            }
        };
            
        HostnameVerifier hv = new HostnameVerifier() {
            public boolean verify(String hostname, SSLSession session) {
                return true;
            }
        };
        SSLContext sc = SSLContext.getInstance("TLSv1.2");
        sc.init(null, trustAllCerts, new SecureRandom());
        HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
        HttpsURLConnection.setDefaultHostnameVerifier(hv);

        params = "someParams";
        URL url = new URL(url);
        conn = (HttpsURLConnection) url.openConnection();
        conn.setDoOutput(true);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
        conn.setConnectTimeout(3000);
        try (OutputStream os = conn.getOutputStream()) {
            os.write(params.getBytes(StandardCharsets.UTF_8));
            os.flush();
            res = getRespWS(conn);//get resp..
        }
    } catch (KeyManagementException | NoSuchAlgorithmException | ClassCastException | JsonParseException e) {
        LOGGER.info("error", e);
    }
}