Exception on downloading pdf from envelope - docusignapi

Question

When i run this code.The Content is not allowed in prolog is coming.What is wroung in my code.
Here is code.
import java.io.*;
import java.net.URL;
import java.net.HttpURLConnection;
import javax.xml.xpath.*;
import org.xml.sax.InputSource;
import org.w3c.dom.*;
public class GetEnvelopeDoc
{
// Enter your info:
static String username = "*****";
static String password = "*****";
static String integratorKey = "******";
static String envelopeId = "**************";
static String envelopeUri = "/envelopes/" + envelopeId;
public static void main(String[] args) throws Exception
{
String url = "https://demo.docusign.net/restapi/v2/login_information";
String baseURL = ""; // we will retrieve this
String accountId = ""; // will retrieve
String authenticateStr =
"<DocuSignCredentials>" +
"<Username>" + username + "</Username>" +
"<Password>" + password + "</Password>" +
"<IntegratorKey>" + integratorKey + "</IntegratorKey>" +
"</DocuSignCredentials>";
//
// STEP 1 - Login
//
HttpURLConnection conn = (HttpURLConnection)new URL(url).openConnection();
conn.setRequestProperty("X-DocuSign-Authentication", authenticateStr);
conn.setRequestProperty("Content-Type", "application/xml");
conn.setRequestProperty("Accept", "application/xml");
int statusValue = conn.getResponseCode(); // side-effect of this call is to fire the request off
if( statusValue != 200 ) // 200 = OK
{
System.out.print("Error calling webservice, status is: " + statusValue);
System.exit(-1);
}
// we use xPath to get the baseUrl and accountId from the XML response body
BufferedReader br = new BufferedReader(new InputStreamReader( conn.getInputStream() ));
StringBuilder responseText = new StringBuilder(); String line = null;
while ( (line = br.readLine()) != null)
responseText.append(line);
String token1 = "//*[1]/*[local-name()='baseUrl']";
String token2 = "//*[1]/*[local-name()='accountId']";
XPath xPath = XPathFactory.newInstance().newXPath();
baseURL = xPath.evaluate(token1, new InputSource(new StringReader(responseText.toString())));
accountId = xPath.evaluate(token2, new InputSource(new StringReader(responseText.toString())));
//--- display results
System.out.println("baseUrl = " + baseURL + "\naccountId = " + accountId);
//
// STEP 2 - Get Info on Envelope's Document(s)
//
> conn = (HttpURLConnection)new URL(baseURL + envelopeUri +
> "/documents/combined").openConnection();
> conn.setRequestProperty("X-DocuSign-Authentication", authenticateStr);
> conn.setRequestProperty("Content-Type", "application/json");
> conn.setRequestProperty("Accept", "application/pdf");
> statusValue = conn.getResponseCode(); // triggers the request
if( statusValue != 200 )
{
System.out.println("Error calling webservice, status is: " + statusValue);
System.exit(-1);
}
// Read the response
InputStreamReader isr = new InputStreamReader(new DataInputStream( conn.getInputStream() ));
System.out.println(isr.toString());
br = new BufferedReader(isr);
StringBuilder response = new StringBuilder();
while ( (line = br.readLine()) != null)
response.append(line);
XPathFactory factory = XPathFactory.newInstance();
XPath xpath = factory.newXPath();
XPathExpression expr = xpath.compile("//*[1]/*[local-name()='envelopeDocument']");
Object result = expr.evaluate(new InputSource(new StringReader(response.toString())), XPathConstants.NODESET);
//--- display results
System.out.println("\nDocument List -->");
int cnt = -1;
NodeList documents = (NodeList) result;
String[] docURIs = new String[documents.getLength()];
for (int i = 0; i < documents.getLength(); i++)
{
Node node = documents.item( i );
if (node != null && node.getNodeType() == Node.ELEMENT_NODE) {
NodeList docNodes = node.getChildNodes();
for (int j = 0; j < docNodes.getLength(); j++)
{
if( docNodes.item(j).getLocalName().equals("documentId"))
System.out.print("documentId: " + docNodes.item(j).getTextContent());
if( docNodes.item(j).getLocalName().equals("name"))
System.out.print(", name: " + docNodes.item(j).getTextContent());
if( docNodes.item(j).getLocalName().equals("uri"))
{
docURIs[++cnt] = docNodes.item(j).getTextContent(); // store the uris for later
System.out.print(", uri: " + docURIs[cnt]);
}
}
System.out.println();
}
}
//
// STEP 3 - Download the document(s)
//
for( int i = 0; i < docURIs.length; i++)
{
// append document uri to url for each document
conn = (HttpURLConnection)new URL(baseURL + docURIs[i]).openConnection();
conn.setRequestProperty("X-DocuSign-Authentication", authenticateStr);
statusValue = conn.getResponseCode();
if( statusValue != 200 )
{
System.out.println("Error calling webservice, status is: " + statusValue);
System.exit(-1);
}
// Grab the document data and write to a local file
isr = new InputStreamReader( conn.getInputStream() );
br = new BufferedReader(isr);
StringBuilder response2 = new StringBuilder();
while ( (line = br.readLine()) != null)
response2.append(line);
BufferedWriter out = new BufferedWriter(new FileWriter("document_" + i + ".pdf"));
out.write(response2.toString());
out.close();
}
System.out.println("\nDone downloading document(s)!");
}
}

Answer 1

Your question is not very clear, I don't know what you mean when you say "the content is not allowed in prolog", however it looks like you have some extra characters in your code. Was this part a copy-paste error? You have the > symbols in front of each of these lines.
> conn = (HttpURLConnection)new URL(baseURL + envelopeUri +
> "/documents/combined").openConnection();
> conn.setRequestProperty("X-DocuSign-Authentication", authenticateStr);
> conn.setRequestProperty("Content-Type", "application/json");
> conn.setRequestProperty("Accept", "application/pdf");
> statusValue = conn.getResponseCode(); // triggers the request