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Invoking a service using BLOB data syntax

Yan_Kliaver

30-03-2009

Hi All,



When invoking LC using BLOB the syntax is:



//Create a BLOB object

BLOB inDoc = new BLOB();

//Populate the BLOB objects remoteURL data member

inDoc.remoteURL = urlData;

//Invoke the EncryptDocument process

BLOB outDoc = encryptClient.invoke(inDoc);



How the syntax goes when my service has also an input string variable,

and how to handle the result if it also returns output string

variable?



Thanks in advance!

Replies

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Jasmin_Charbonn

31-03-2009

Usually when we invoke a LC process, we can pass a map of the input parameters,and then we get an Invocation Response object that can contain the output parameters.



In you case you're using this encryptClient object. Can you show me how that object was created?



Thanks,



Jasmin
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Yan_Kliaver

31-03-2009

Hi Jasmin,<br /><br />I've copied this code from "Invocation API quick starts" document,<br />see the full code:<br /><br />import com.adobe.idp.services.*;<br />import java.io.File;<br />import java.io.FileOutputStream;<br />import java.io.InputStream;<br />import java.net.URL;<br />import javax.activation.DataHandler;<br />import javax.activation.FileDataSource;<br />import org.apache.axis.attachments.AttachmentPart;<br />public class InvokeDocumentEncryptDime {<br />public static void main(String[] args) {<br />try{<br />//create a service locator<br />EncryptDocumentServiceLocator locate = new<br />EncryptDocumentServiceLocator();<br /> //specify the service target URL and object type<br />URL serviceURL = new<br />URL("http://localhost:8080/soap/services/EncryptDocument?blob=dime");<br />//Use the binding stub with the locator<br />EncryptDocumentSoapBindingStub encryptionClientStub = new<br />EncryptDocumentSoapBindingStub(serviceURL,locate);<br />encryptionClientStub.setUsername("administrator");<br />encryptionClientStub.setPassword("password");<br />//Get the DIME Attachments - which is the PDF document to encrypt<br />java.io.File file = new java.io.File("C:\\Adobe\\Loan.pdf");<br />//Create a DataHandler object<br />DataHandler buildFile = new DataHandler(new FileDataSource(file));<br />//Use the DataHandler object to create an AttachmentPart object<br />AttachmentPart part = new AttachmentPart(buildFile);<br />//get the attachment ID<br />String attachmentID = part.getContentId();<br />//Add the attachment to the encryption service stub<br />encryptionClientStub.addAttachment(part);<br />//Inform ES where the attachment is stored by providing the attachment id<br />BLOB inDoc = new BLOB();<br />inDoc.setAttachmentID(attachmentID);<br />BLOB outDoc = encryptionClientStub.invoke(inDoc);<br />//Go through the returned attachments and get the encrypted PDF document<br />byte[] resultByte = null;<br />attachmentID = outDoc.getAttachmentID();<br />//Find the proper attachment<br />Object[] parts = encryptionClientStub.getAttachments();<br />for (int i=0;i<parts.length;i++){<br />AttachmentPart attPart = (AttachmentPart) parts[i];<br />if (attPart.getContentId().equals(attachmentID)) {<br />//DataHandler<br />buildFile = attPart.getDataHandler();<br />InputStream stream = buildFile.getInputStream();<br />byte[] pdfStream = new byte[stream.available()];<br />stream.read(pdfStream);<br />//Create a File object<br />File outFile = new File("C:\\Adobe\\EncryptLoan.pdf");<br />//Create a FileOutputStream object.<br />FileOutputStream myFileW = new FileOutputStream(outFile);<br />//Call the FileOutputStream objects write method and pass the pdf<br />data<br />myFileW.write(pdfStream);<br />//Close the FileOutputStream object<br />myFileW.close();}}}<br /><br />The process I wish to invoke has 2 input parameters:<br />string variable and a document,also this process returns a string and document as output.<br /><br />Do you have any example how to invoke it and handle its result?<br /><br />Thanks!
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Yan_Kliaver

31-03-2009

Sorry, I've posted a Java code by mistake, this is the right one:



using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.IO;

using System.Security.Policy;

namespace ConsoleApplication1

{

class InvokeEncryptDocumentUsingHTTP

{

const int BUFFER_SIZE = 4096;

[STAThread]

static void Main(string[] args)

{

try

{

String urlData =

"http://localhost:8080/WebApplication/Loan.pdf";

//Create an EncryptDocumentServiceWse object and set

authentication values

EncryptDocumentService encryptClient = new

EncryptDocumentService();

encryptClient.Credentials = new

System.Net.NetworkCredential("administrator", "password");

//Create a BLOB object

BLOB inDoc = new BLOB();

//Populate the BLOB objects remoteURL data member

inDoc.remoteURL = urlData;

//Invoke the EncryptDocument process

BLOB outDoc = encryptClient.invoke(inDoc);

//Create a UriBuilder object using the

//BLOB objects remoteURL data member field

UriBuilder uri = new UriBuilder(outDoc.remoteURL);

//Convert the UriBuilder to a Stream object

System.Net.WebRequest wr =

System.Net.WebRequest.Create(uri.Uri);

System.Net.WebResponse response = wr.GetResponse();

System.IO.StreamReader sr = new

System.IO.StreamReader(response.GetResponseStream());

Stream mySteam = sr.BaseStream;

//Create a byte array

byte[] myData = new byte[BUFFER_SIZE];

//Populate the byte array

PopulateArray(mySteam, myData);

//Create a new file named UsageRightsLoan.pdf

FileStream fs2 = new FileStream("C:\\Adobe\\EncryptedPDF.pdf",

FileMode.OpenOrCreate);

//Create a BinaryWriter object

BinaryWriter w = new BinaryWriter(fs2);

w.Write(myData);

w.Close();

fs2.Close();

}

catch (Exception ee)

{

Console.WriteLine(ee.Message);

}

}

public static void PopulateArray(Stream stream, byte[] data)

{

int offset = 0;

int remaining = data.Length;

while (remaining > 0)

{

int read = stream.Read(data, offset, remaining);

if (read <= 0)

throw new EndOfStreamException();

remaining -= read;

offset += read;

}

}

}

}
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Jasmin_Charbonn

31-03-2009

You have to create a new web reference to your process that has 2 inputs and 1 input variables. The url for the wsdl should be http://
:/soap/services/name of process?wsdl



It should create the necessary function so that you can pass all you parameters to the process.



Jasmin
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Ashish_Khandelw

24-09-2009

Jasmin,

I tried using code above. I am not able to save pdf correctly. It is giving me error message of corrupted pdf. When i try going to url provided by variable

outDoc.remoteURL I am able to see pdf stored in GDS. I am not sure how this file is getting corrupted while writing to the directory. Also how can I dsiplay this pdf on the screen instead of saving it to a directory?