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November 30, 2019 20:22
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How to Turn Off Certificate Validation in Java HTTPS Connections? skip ssl certificate
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//https://nakov.com/blog/2009/07/16/disable-certificate-validation-in-java-ssl-connections/ | |
import java.io.InputStreamReader; | |
import java.io.Reader; | |
import java.net.URL; | |
import java.net.URLConnection; | |
import javax.net.ssl.HostnameVerifier; | |
import javax.net.ssl.HttpsURLConnection; | |
import javax.net.ssl.SSLContext; | |
import javax.net.ssl.SSLSession; | |
import javax.net.ssl.TrustManager; | |
import javax.net.ssl.X509TrustManager; | |
import java.security.cert.X509Certificate; | |
public class Example { | |
public static void main(String[] args) throws Exception { | |
// Create a trust manager that does not validate certificate chains | |
TrustManager[] trustAllCerts = new TrustManager[] {new X509TrustManager() { | |
public java.security.cert.X509Certificate[] getAcceptedIssuers() { | |
return null; | |
} | |
public void checkClientTrusted(X509Certificate[] certs, String authType) { | |
} | |
public void checkServerTrusted(X509Certificate[] certs, String authType) { | |
} | |
} | |
}; | |
// Install the all-trusting trust manager | |
SSLContext sc = SSLContext.getInstance("SSL"); | |
sc.init(null, trustAllCerts, new java.security.SecureRandom()); | |
HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory()); | |
// Create all-trusting host name verifier | |
HostnameVerifier allHostsValid = new HostnameVerifier() { | |
public boolean verify(String hostname, SSLSession session) { | |
return true; | |
} | |
}; | |
// Install the all-trusting host verifier | |
HttpsURLConnection.setDefaultHostnameVerifier(allHostsValid); | |
URL url = new URL("https://www.nakov.com:2083/"); | |
URLConnection con = url.openConnection(); | |
Reader reader = new InputStreamReader(con.getInputStream()); | |
while (true) { | |
int ch = reader.read(); | |
if (ch==-1) { | |
break; | |
} | |
System.out.print((char)ch); | |
} | |
} | |
} | |
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