public HttpClient getHttpsClientTrustAll() {
    try {
        SSLSocketFactory sf = new SSLSocketFactory(new TrustStrategy(){
            @Override
            public boolean isTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                return true;
            }
        }, new AllowAllHostnameVerifier());

        PlainSocketFactory psf = PlainSocketFactory.getSocketFactory();

        SchemeRegistry registry = new SchemeRegistry();
        registry.register(new Scheme("http", 80, psf));
        registry.register(new Scheme("https", 443, sf));
        ClientConnectionManager ccm = new PoolingClientConnectionManager(registry);
        return new DefaultHttpClient(ccm);
    } catch (Exception ex) {
    	log.error("Failed to create TrustAll https client", ex);
        return new DefaultHttpClient();
    }
}
 

public AbstractRestTemplateClient ignoreAuthenticateServer() {
    //backward compatible with android httpclient 4.3.x
    if(restTemplate.getRequestFactory() instanceof HttpComponentsClientHttpRequestFactory) {
        try {
            SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustSelfSignedStrategy()).build();
            X509HostnameVerifier verifier = ignoreSslWarning ? new AllowAllHostnameVerifier() : new BrowserCompatHostnameVerifier();
            SSLConnectionSocketFactory socketFactory = new SSLConnectionSocketFactory(sslContext, verifier);
            HttpClient httpClient = HttpClients.custom().setSSLSocketFactory(socketFactory).build();
            ((HttpComponentsClientHttpRequestFactory)restTemplate.getRequestFactory()).setHttpClient(httpClient);
        } catch (Exception e) {
            e.printStackTrace();
        }
    } else {
        Debug.error("the request factory " + restTemplate.getRequestFactory().getClass().getName() + " does not support ignoreAuthenticateServer");
    }
    return this;
}
 

private static RestTemplate createRestTemplate(String host, String username, String password, Set<ClientHttpRequestInterceptor> interceptors) throws GeneralSecurityException {
    CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
    credentialsProvider.setCredentials(new AuthScope(host, 25555),
        new UsernamePasswordCredentials(username, password));

    SSLContext sslContext = SSLContexts.custom()
        .loadTrustMaterial(null, new TrustSelfSignedStrategy())
        .useTLS()
        .build();

    SSLConnectionSocketFactory connectionFactory = new SSLConnectionSocketFactory(sslContext, new AllowAllHostnameVerifier());

    HttpClient httpClient = HttpClientBuilder.create()
        .disableRedirectHandling()
        .setDefaultCredentialsProvider(credentialsProvider)
        .setSSLSocketFactory(connectionFactory)
        .build();

    RestTemplate restTemplate = new RestTemplate(new HttpComponentsClientHttpRequestFactory(httpClient));
    restTemplate.getInterceptors().addAll(interceptors);

    return restTemplate;
}
 

public static CloseableHttpClient getNotValidatingClient(int timeout, String proxyServer, Integer proxyPort,
		String proxyUser, String proxyPassword) {
	try {
		HttpClientBuilder clientBuilder = HttpClients.custom();

		RequestConfig.Builder requestBuilder = RequestConfig.custom().setConnectTimeout(timeout * 1000)
				.setSocketTimeout(timeout * 1000).setConnectionRequestTimeout(timeout * 1000)
				.setRedirectsEnabled(true);

		if (StringUtils.isNotEmpty(proxyServer)) {
			HttpHost proxyHost = new HttpHost(proxyServer, proxyPort);
			requestBuilder.setProxy(proxyHost);

			DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxyHost);
			clientBuilder.setRoutePlanner(routePlanner);

			if (StringUtils.isNotEmpty(proxyUser)) {
				CredentialsProvider credentialProvider = new BasicCredentialsProvider();
				credentialProvider.setCredentials(AuthScope.ANY,
						new UsernamePasswordCredentials(proxyUser, proxyPassword));
				clientBuilder.setRoutePlanner(routePlanner);
			}
		}

		RequestConfig requestConfig = requestBuilder.build();

		CloseableHttpClient httpclient = clientBuilder.setHostnameVerifier(new AllowAllHostnameVerifier())
				.setSslcontext(new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
					public boolean isTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
						return true;
					}
				}).build()).setDefaultRequestConfig(requestConfig).build();
		return httpclient;
	} catch (Throwable t) {
		return null;
	}
}
 

private CloseableHttpClient getDefaultHttpClient() throws KeyManagementException, NoSuchAlgorithmException, KeyStoreException {
	SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(null, new TrustSelfSignedStrategy()).useTLS().build();
	SSLConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(sslContext,
			new AllowAllHostnameVerifier());

	return HttpClients.custom().setSSLSocketFactory(sslSocketFactory).build();
}
 

private CloseableHttpClient getDefaultHttpClient() throws KeyManagementException, NoSuchAlgorithmException, KeyStoreException {
	SSLContext sslContext = SSLContexts.custom().loadTrustMaterial(null, new TrustSelfSignedStrategy()).useTLS().build();
	SSLConnectionSocketFactory sslSocketFactory = new SSLConnectionSocketFactory(sslContext,
			new AllowAllHostnameVerifier());

	return HttpClients.custom().setSSLSocketFactory(sslSocketFactory).build();
}
 

public static HttpClient getClient() {
    try {
        SSLContext context = new SSLContextBuilder()
                .loadTrustMaterial(null, (arg0, arg1) -> true)
                .build();

        return HttpClients.custom()
                .setHostnameVerifier(new AllowAllHostnameVerifier())
                .setSslcontext(context)
                .build();
    } catch (Exception e) {
        e.printStackTrace();
        return HttpClients.createDefault();
    }
}
 

private CloseableHttpClient getApacheSslBypassClient() throws NoSuchAlgorithmException,
        KeyManagementException, KeyStoreException {
    return HttpClients.custom().
            setHostnameVerifier(new AllowAllHostnameVerifier()).
            setSslcontext(new SSLContextBuilder()
                                  .loadTrustMaterial(null, (arg0, arg1) -> true)
                                  .build()).build();
}