Spring RestTemplate: SSL handshake failure

Question

I am trying to consume a restful ws with basic auth. I did not import any cert into my keystore. When I use chrome plugin Advance Rest client to test it (using

Answer 1

If you happen to be using Java 7 you need to explicitly tell Java to use TLSv1.2 protocol. Here is an example using Spring XML configuration.

***In any Spring bean (i.e. a controller)***

import org.apache.http.client.HttpClient;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.HttpClients;
import javax.net.ssl.SSLContext;

@Bean(name="client")
public HttpClient make() throws NoSuchAlgorithmException, KeyManagementException {
    SSLContext sslContext = SSLContexts.custom().build();
    SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslContext,
            new String[]{"TLSv1.2", "TLSv1.1"}, null, SSLConnectionSocketFactory.getDefaultHostnameVerifier());
    return HttpClients.custom()
            .setSSLSocketFactory(sslConnectionSocketFactory)
            .build();
}

***In XML configuration files***


    


    

You could do the same without XML with something like this:

RestTemplate restTemplate;

public HttpClient getHttpClient() throws NoSuchAlgorithmException, KeyManagementException {
    SSLContext sslContext = SSLContexts.custom().build();
    SSLConnectionSocketFactory sslConnectionSocketFactory = new SSLConnectionSocketFactory(sslContext,
            new String[]{"TLSv1.2", "TLSv1.1"}, null, SSLConnectionSocketFactory.getDefaultHostnameVerifier());
    return HttpClients.custom()
            .setSSLSocketFactory(sslConnectionSocketFactory)
            .build();
}

public void setUp() throws Exception {
    restTemplate = new RestTemplate(
            new HttpComponentsClientHttpRequestFactory(
                    getHttpClient()));
    ...
}