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Last Updated: November 02, 2017
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Java - Ignore SSL Errors

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.HttpClientConnectionManager;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.BasicHttpClientConnectionManager;
import org.apache.http.util.EntityUtils;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.io.IOException;
import java.net.URL;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;

/**
 * Created by mturner on 4/11/16.
 */
public class RestClient {

    public static int getHttpCode(URL url) throws IOException {

        HttpClient client = null;
        try {
            client = getAllSSLClient();
        } catch (KeyStoreException | NoSuchAlgorithmException | KeyManagementException e) {
            e.printStackTrace();
        }
        HttpGet request = new HttpGet(url.toString());
        HttpResponse response = null;
        if (client == null) throw new AssertionError();
        response = client.execute(request);
        return response.getStatusLine().getStatusCode();

    }

    public static String getString(URL url) throws IOException {

        HttpClient client = null;
        try {
            client = getAllSSLClient();
        } catch (KeyStoreException | NoSuchAlgorithmException | KeyManagementException e) {
            e.printStackTrace();
        }
        HttpGet request = new HttpGet(url.toString());
        HttpResponse response = null;
        if (client == null) throw new AssertionError();
        response = client.execute(request);
        return EntityUtils.toString(response.getEntity());
    }

    public static HttpClient getAllSSLClient() throws KeyStoreException, NoSuchAlgorithmException, KeyManagementException {


        TrustManager[] trustAllCerts = new TrustManager[]{new X509TrustManager() {

            @Override
            public java.security.cert.X509Certificate[] getAcceptedIssuers() {
                return null;
            }

            @Override
            public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType) {
            }

            @Override
            public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType) {
            }
        }};
        SSLContext context = SSLContext.getInstance("SSL");
        context.init(null, trustAllCerts, null);

        HttpClientBuilder builder = HttpClientBuilder.create();
        SSLConnectionSocketFactory sslConnectionFactory = new SSLConnectionSocketFactory(context, SSLConnectionSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);
        builder.setSSLSocketFactory(sslConnectionFactory);

        PlainConnectionSocketFactory plainConnectionSocketFactory = new PlainConnectionSocketFactory();
        Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create()
                .register("https", sslConnectionFactory)
                .register("http", plainConnectionSocketFactory)
                .build();

        HttpClientConnectionManager ccm = new BasicHttpClientConnectionManager(registry);

        builder.setConnectionManager(ccm);

        return builder.build();

    }
}
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