对公共https：// Web服务的Java HTTP POST请求

Question

I try to send a POST request to a public https:// web service. This is my code snippet:

static void xPostJsonUsingHttpClient() 
       throws ClientProtocolException, IOException {
    CloseableHttpClient client = HttpClients.createDefault();
    String anafURL = 
    "https://webservicesp.anaf.ro/PlatitorTvaRest/api/v2/ws/tva";
    HttpPost httpPost = new HttpPost(anafURL);

    String json = "[{\"cui\":19,\"data\":\"2017-11-07\"}]";

    StringEntity entity = new StringEntity(json,"UTF-8");

    entity.setContentType("application/json");
    httpPost.setHeader("Accept", "application/json");
    httpPost.setHeader("Content-Type", "application/json");
    httpPost.setEntity(entity);

    CloseableHttpResponse response = client.execute(httpPost);
    System.out.println(response);

    client.close();
}       

Being a https:// adress I don't know, what I have to change? Postman or SoapUI works fine with it.

When I run my code, it terminates with error: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

Have I to download a public key or just I have to make some additional settings?

Thanks

Answer 1

Just guessing but I believe your JVM does not recognize the CA of the certificate that this web server uses. I ran into the same problem a while ago and what helped was the following:

The URL you are trying to connect to, uses "certsign.net" as Certificate Authority.

1. Download the CA from certsign !
2. Then import it using this guide !

After that you should be able to connect. If not let me know.

Answer 2

You can use http-request built on apache http api.

rivate static final HttpRequest<?> HTTP_REQUEST = 
 HttpRequestBuilder.createPost("https://webservicesp.anaf.ro/PlatitorTvaRest/api/v2/ws/tva")
        .trustAllCertificates()
        .trustAllHosts()
        .addDefaultHeader(ACCEPT, APPLICATION_JSON.getMimeType())
        .addContentType(APPLICATION_JSON)
        .build();

@Test
public void test() {
    ResponseHandler<?> responseHandler = 
            HTTP_REQUEST.executeWithBody("[{\"cui\":19,\"data\":\"2017-11-07\"}]");
    assertEquals(SC_OK, responseHandler.getStatusCode());
}

Status code is OK. You can use String or sometype instead of wildcard type if you want to get response body. See the documentation.