невозможно найти действительный путь сертификации для запрашиваемой цели в Java при аутентификации нескольких URL

Question

Я пытаюсь выполнить проверку подлинности SSL-сертификата для нескольких URL-адресов в Java-программе, я сохранил URL-адреса в arrayList и передаю их в качестве параметра методу, который выполняет проверку подлинности сертификата и предоставляет ответ от сервера.

Описанный выше метод работает нормально для одного URL-адреса как при ручном вводе, так и через переменную. Но, передав эти URL-адреса через arrayList, вы получаете успех для первой итерации от второго URL-адреса до n-го URL, и я получаю эту ошибку.

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.ssl.Alerts.getSSLException(Alerts.java:192)
    at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1964)
    at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:328)
    at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:322)
    at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1614)
    at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216)
    at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1052)
    at sun.security.ssl.Handshaker.process_record(Handshaker.java:987)
    at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1072)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1385)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1413)
    at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:1397)
    at sun.net.www.protocol.https.HttpsClient.afterConnect(HttpsClient.java:559)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:185)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1564)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
    at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:480)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:347)
    at com.redeem.GetREsponse.getResponse(GetREsponse.java:108)
    at com.redeem.Check1.main(Check1.java:20)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:397)
    at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:302)
    at sun.security.validator.Validator.validate(Validator.java:262)
    at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324)
    at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229)
    at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124)
    at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1596)
    ... 15 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
    at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141)
    at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126)
    at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280)
    at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:392)
    ... 21 more
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: **unable to find valid certification path to requested target**

Как решить эту проблему?

Фрагмент кода, в котором я использовал разные методы

public class Check1 {
static ArrayList<String> arrayList;
public static void main(String[] args) {
    arrayList = new ArrayList();
    //GetREsponse get = new GetREsponse();
    arrayList.add("URL1");
    arrayList.add("URL2");
    arrayList.add("URL3");


    for(int i = 0; i < arrayList.size(); i++)
    {
        //GetREsponse get = new GetREsponse();
        GetREsponse.getResponse(arrayList.get(i));

    /*  Thread1 t = new Thread1(i);
        t.start(); // try to check the status by providing delay
        try {       
            t.sleep(10000); 
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        //continue;
        */
    }   
}

/*public static class Thread1 extends Thread
{
    int i1;
    public Thread1(int i)
    {
        i1 = i;
    }
    public void run()
    {
        //GetREsponse get = new GetREsponse();
        //get.getResponse(arrayList.get(i1));
        GetREsponse.getResponse(arrayList.get(i1));
    }
}

}*/


public class GetREsponse {
    static SSLContext sslcontext;
    static String Result;
    static StringBuilder sb = new StringBuilder();


    static void getResponse(String url)
    {
        System.out.println(url+"~swa");
        try {

            sslcontext = SSLContexts.custom()
                    .loadTrustMaterial(new File("C:/ssl/1.jks"),
                            "secret".toCharArray())
                    .loadKeyMaterial(new File("C:/ssl/certificate.p12"),
                            "secret".toCharArray(),
                            "secret".toCharArray())
                    .build();

            System.out.println("success");
        } catch (KeyManagementException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (UnrecoverableKeyException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (KeyStoreException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (CertificateException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        // Allow TLSv1 protocol only
        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
                sslcontext,
                new String[] { "TLSv1" },
                null,
                SSLConnectionSocketFactory.getDefaultHostnameVerifier());

        // Directly configure HTTP authentication
        System.setProperty("javax.net.ssl.keyStore", "C:/ssl/1.jks");
      System.setProperty("https.protocols", "TLSv1");
      System.setProperty("javax.net.ssl.keyStorePassword", "password");
        String username = "Username";
        String password = "loginpassword";
        String authString = username + ":" + password;
        String authHeader= null;
        try {
            authHeader = "Basic " + Base64.getEncoder().encodeToString(authString.getBytes("UTF-8"));
            System.out.println("success");
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        CloseableHttpClient httpclient = HttpClients.custom()
                .setSSLSocketFactory(sslsf)`enter code here`
                .build();
        System.out.println("success");


        try {

            URL url1 = new URL(url);

            HttpsURLConnection urlConn = (HttpsURLConnection) url1.openConnection();
            urlConn.setDefaultSSLSocketFactory(sslcontext.getSocketFactory());
            System.out.println("1");
            urlConn.setDoOutput(true);
            urlConn.setRequestMethod("GET");

            urlConn.setRequestProperty("Authorization", authHeader);
            urlConn.setRequestProperty("Content-Type", "application/json");
            urlConn.setRequestProperty("Accept", "application/json");

            System.out.println("2");

           int response = urlConn.getResponseCode();
            System.out.println("3");

            System.out.println(response+"");

            InputStream inputStream = urlConn.getInputStream(); 
            InputStreamReader i_reader = new InputStreamReader(inputStream); 
            BufferedReader b_reader = new BufferedReader(i_reader);
            String str = b_reader.readLine();
            while(str != null)
            {
                sb.append(str);
                str = b_reader.readLine();
            }
            Result = sb.toString();
            System.out.println(sb.toString());            
            } 
            catch(Exception e)
            {
                e.printStackTrace();
                System.out.println(e.toString());
            } finally {
            try {
                httpclient.close();

            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                System.out.println(e.toString());
            }
        }
    }
}