Tukukkk

I am trying to download a PDF file available at one of the rest URL using JAX RS and Jersey with authorization .

import org.apache.commons.io.IOUtils;

import javax.net.ssl.*;

import javax.ws.rs.WebApplicationException;

import javax.ws.rs.client.Client;

import javax.ws.rs.client.ClientBuilder;

import javax.ws.rs.client.Invocation;

import javax.ws.rs.client.WebTarget;

import javax.ws.rs.core.Response;

import java.io.FileOutputStream;

import java.io.InputStream;

import java.io.File;

import java.security.SecureRandom;

import java.security.cert.X509Certificate;



public class ReportView {

    public void process(String authStringEnc) {



        System.setProperty("javax.net.ssl.trustStore","C:\Users\azada\Desktop\my-app\stage\npkeystore.jks");

        System.setProperty("javax.net.ssl.trustStorePassword","changeit");

        System.setProperty("javax.net.ssl.trustAnchors","C:\Users\azada\Desktop\my-app\stage\npkeystore.jks");



        Client client = ClientBuilder.newClient();

       // WebTarget target = client.target("https://x.x.x.x/api/profiler/1.0/reporting/reports/751252/").path("view");

        WebTarget target = client.target("https://x.x.x.x/api/profiler/1.0/reporting/reports/751252/view");



        Response resp = target.request("application/pdf,image/jpeg,application/xml,application/vnd.ms-excel").header("Authorization", authStringEnc).get(Response.class);





        System.out.println("Code : " + resp.getStatus());



        if(resp.getStatus() == Response.Status.OK.getStatusCode()) {

            InputStream is = resp.readEntity(InputStream.class);



            File downloadfile = new File("C://Users/azada/Downloads/view.pdf");

            try {



                byte byteArray = IOUtils.toByteArray(is);

                FileOutputStream fos = new FileOutputStream(downloadfile);

                fos.write(byteArray);

                fos.flush();

                fos.close();

            }catch(Exception e){

                e.getMessage();

            }



            IOUtils.closeQuietly(is);

            System.out.println("the file details after call:"+ downloadfile.getAbsolutePath()+", size is "+downloadfile.length());

        }

        else{

            throw new WebApplicationException("Http Call failed. response code is"+resp.getStatus()+". Error reported is"+resp.getStatusInfo());

        }

    }

But the above code snippet returns a 400 Bad Request . Not sure if I have specified the URL incorrectly . Using the same URL in Postman returns a PDF file .

Exception in thread "main" javax.ws.rs.WebApplicationException: Http Call failed. response code is 400. Error reported is Bad Request

Also removing the certificate block returns me PKIX Certification Exception while I have already defined it in main class and using it in one of the subclass .

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

JAX-RS and Jersey concepts are pretty new to me. Not Sure where I am going wrong in terms of specifying URL with authentication,certificate and request.

Any help/guidance over same would really help.

Might be a comment but can't format that in a comment.

Reading the doc I can see that

3. Retrieve the report data.

Once the report completes, the client can retrieve its data or the
rendered version of the report in a number of formats.

The following resources can be used to retrieve a rendered version of
the report:

/profiler/1.0/reporting/reports/{id}/view.pdf

/profiler/1.0/reporting/reports/{id}/view.csv

These are for PDF and CSV versions respectively.

Could you try

WebTarget target = client

    .target("https://x.x.x.x/api/profiler/1.0/reporting/reports/751252/view.pdf");

Response resp = target

    .request("application/pdf,image/jpeg,application/xml,application/vnd.ms-excel")

    .header("Authorization", authStringEnc)

    .get(Response.class);

I tried an other way round and was able to download the PDF files . Below is the code snippet for the same .

import com.sun.jersey.api.client.Client;

import com.sun.jersey.api.client.ClientResponse;

import com.sun.jersey.api.client.WebResource;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;





        String download_url = "https://x.x.x.x/api/profiler/1.0/reporting/reports/" + reportID +"/view";

        String name = "report";

        String password = "report";

        String authString = name + ":" + password;

        String authStringEnc = Base64.getEncoder().encodeToString(authString.getBytes());



        System.out.println(" Downloading " + name + " report");



        Client restClient = Client.create();

        WebResource webResource = restClient.resource(download_url);

        ClientResponse resp = webResource.header("Authorization", "Basic " + authStringEnc)

                .get(ClientResponse.class);





        if(resp.getStatus() != 200){

            System.err.println(" Failed : HTTP error code : " + resp.getStatus());

        }

        else

        {

            System.out.println(" Response : " + resp.getStatus() + " OK. Successfully Connected");

        }



        InputStream is = resp.getEntityInputStream();

        OutputStream os = new FileOutputStream(curDir + "\" + country.toLowerCase() + "\ReportsExtracted\" + name + ".pdf");



        byte buffer = new byte[1024];

        int bytesRead;



        while((bytesRead = is.read(buffer)) != -1){

            os.write(buffer, 0, bytesRead);

        }

        is.close();



        //flush OutputStream to write any buffered data to file

        os.flush();

        os.close();



        System.out.println(" Downloaded " + name + " report");

Hope this helps.