How to make HTTPS GET call with certificate in Rest-Assured java

Using RestAssured 3.0 I took @rohitkadam19's code and got it working so:

@Before
public void setUp() throws Exception {
    try {
        RestAssured.port = port;
        RestAssured.useRelaxedHTTPSValidation();
        RestAssured.config().getSSLConfig().with().keyStore("classpath:keystore.p12", "password");
    } catch (Exception ex) {
        System.out.println("Error while loading keystore >>>>>>>>>");
        ex.printStackTrace();
    }
}

In my case using "relaxed HTTPs validation" fixed my problem:

given().relaxedHTTPSValidation().when().post("https://my_server.com")

I am new to rest-assured but I know this kind of problems using digital certificates for client authentication

In rest-assured doc is only an option to configure certificate: JKS

RestAssured.config = RestAssured.newConfig().sslConfig(new SSLConfig("/truststore_javanet.jks", "test1234");

Convert your PEM to JKS. Open it with portecle and ensure that the password is right and you have the certificate loaded and all the certification chain to CA root. Portecle simplify the command-line using a GUI and also allows you to create the JKS

http://portecle.sourceforge.net/

This error occurs ALWAYS when your java client do not trust in server certificate

 PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

The easiest way to fix this is include the server certificate chain in your jdk keystore.

First, download the server certificates opening an https connection with your browser, for example with chrome. It does not matter it fails. Click on the green lock in the toolbar>Detail>See server certicate and download as PEM. It is best to download it yourself to make sure you are using the correct. Download all certificates of certification chain

Then, open jdk cacerts at JDK_HOME/jre/lib/security with portecle. Password will be 'changeit'. Add the server certificates as 'trusted'

Now, PKIX path building failed will dissapear. If not, check the certificates and the JDK you are using

Got it working with following code -

KeyStore keyStore = null;
SSLConfig config = null;

try {
        keyStore = KeyStore.getInstance("PKCS12");
        keyStore.load(
                new FileInputStream("certs/client_cert_and_private.p12"),
                password.toCharArray());

    } catch (Exception ex) {
        System.out.println("Error while loading keystore >>>>>>>>>");
        ex.printStackTrace();
    }

    if (keyStore != null) {

        org.apache.http.conn.ssl.SSLSocketFactory clientAuthFactory = new org.apache.http.conn.ssl.SSLSocketFactory(keyStore, password);

        // set the config in rest assured
        config = new SSLConfig().with().sslSocketFactory(clientAuthFactory).and().allowAllHostnames();

RestAssured.config = RestAssured.config().sslConfig(config);
RestAssured.given().when().get("/path").then();