How to ignore SSL certificate errors in Apache HttpClient 4.0
Apache HttpClient 4.5.5
HttpClient httpClient = HttpClients
.custom()
.setSSLContext(new SSLContextBuilder().loadTrustMaterial(null, TrustAllStrategy.INSTANCE).build())
.setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE)
.build();
No deprecated API has been used.
Simple verifiable test case:
package org.apache.http.client.test;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContextBuilder;
import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import java.security.KeyManagementException;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
public class ApacheHttpClientTest {
private HttpClient httpClient;
@Before
public void initClient() throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException {
httpClient = HttpClients
.custom()
.setSSLContext(new SSLContextBuilder().loadTrustMaterial(null, TrustAllStrategy.INSTANCE).build())
.setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE)
.build();
}
@Test
public void apacheHttpClient455Test() throws IOException {
executeRequestAndVerifyStatusIsOk("https://expired.badssl.com");
executeRequestAndVerifyStatusIsOk("https://wrong.host.badssl.com");
executeRequestAndVerifyStatusIsOk("https://self-signed.badssl.com");
executeRequestAndVerifyStatusIsOk("https://untrusted-root.badssl.com");
executeRequestAndVerifyStatusIsOk("https://revoked.badssl.com");
executeRequestAndVerifyStatusIsOk("https://pinning-test.badssl.com");
executeRequestAndVerifyStatusIsOk("https://sha1-intermediate.badssl.com");
}
private void executeRequestAndVerifyStatusIsOk(String url) throws IOException {
HttpUriRequest request = new HttpGet(url);
HttpResponse response = httpClient.execute(request);
int statusCode = response.getStatusLine().getStatusCode();
assert statusCode == 200;
}
}
You need to create a SSLContext with your own TrustManager and create HTTPS scheme using this context. Here is the code,
SSLContext sslContext = SSLContext.getInstance("SSL");
// set up a TrustManager that trusts everything
sslContext.init(null, new TrustManager[] { new X509TrustManager() {
public X509Certificate[] getAcceptedIssuers() {
System.out.println("getAcceptedIssuers =============");
return null;
}
public void checkClientTrusted(X509Certificate[] certs,
String authType) {
System.out.println("checkClientTrusted =============");
}
public void checkServerTrusted(X509Certificate[] certs,
String authType) {
System.out.println("checkServerTrusted =============");
}
} }, new SecureRandom());
SSLSocketFactory sf = new SSLSocketFactory(sslContext);
Scheme httpsScheme = new Scheme("https", 443, sf);
SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(httpsScheme);
// apache HttpClient version >4.2 should use BasicClientConnectionManager
ClientConnectionManager cm = new SingleClientConnManager(schemeRegistry);
HttpClient httpClient = new DefaultHttpClient(cm);
All of the other answers were either deprecated or didn't work for HttpClient 4.3.
Here is a way to allow all hostnames when building an http client.
CloseableHttpClient httpClient = HttpClients
.custom()
.setHostnameVerifier(new AllowAllHostnameVerifier())
.build();
Or if you are using version 4.4 or later, the updated call looks like this:
CloseableHttpClient httpClient = HttpClients
.custom()
.setSSLHostnameVerifier(NoopHostnameVerifier.INSTANCE)
.build();