Quick Start: Handling submitted forms using the web service API

The following code example handles a submitted form. If form data is submitted as XML data, then each field is retrieved. If form data is submitted as PDF data, then the submitted form is saved as a PDF file. (See Handling Submitted Forms.)

/*

 * Ensure that you create the Java proxy classes to use 

 * base64 encoding. This is required to populate a BLOB 

 * object with data or retrieve data from a BLOB object.

 * 

 * For information, see "Creating Java proxy classes using Apache Axis" 

 * in Programming with LiveCycle ES.  

 */

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.PrintWriter;

import javax.servlet.Servlet;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import com.adobe.idp.services.BLOB;

import com.adobe.idp.services.FormsResult;

import com.adobe.idp.services.FormsService;

import com.adobe.idp.services.FormsServiceServiceLocator;

import com.adobe.idp.services.RenderOptionsSpec;

import com.adobe.idp.services.holders.BLOBHolder;

import com.adobe.idp.services.holders.FormsResultHolder;

import com.adobe.idp.services.holders.MyArrayOf_xsd_anyTypeHolder;

public class HandleDataWS extends HttpServlet implements Servlet {

		public void doGet(HttpServletRequest req, HttpServletResponse resp)

		throws ServletException, IOException {

			doPost(req,resp);

	}

	public void doPost(HttpServletRequest req, HttpServletResponse resp)

		throws ServletException, IOException {

		try{

			//Create a FormsService object

			com.adobe.idp.services.FormsServiceServiceLocator sl = new FormsServiceServiceLocator();

			FormsService formsOb = sl.getFormsService();

			((javax.xml.rpc.Stub)formsOb)._setProperty(javax.xml.rpc.Stub.

			USERNAME_PROPERTY, "administrator");

			((javax.xml.rpc.Stub)formsOb)._setProperty(javax.xml.rpc.Stub.

			PASSWORD_PROPERTY, "password");

			//Create a PrintWriter object

			PrintWriter pp = resp.getWriter(); 

			//Create a BLOB object to pass

			//to processFormSubmission

			BLOB inForm = new BLOB(); 

			//Get the input stream passed to the servlet and copy

			//its contents into a byte array

		  	int readBytes = -1;

		  	int bufLength = req.getContentLength();

		  	InputStream input = req.getInputStream();

		  	byte[] buffer = new byte[bufLength];

		  	ByteArrayOutputStream output = new ByteArrayOutputStream(bufLength);

		  	while((readBytes = input.read(buffer, 0, bufLength)) != -1) {

		  		output.write(buffer, 0, readBytes);

		 	 }

		  	byte[] finalOutput = output.toByteArray();

			//Populate the BLOB object 

			inForm.setBinaryData(finalOutput);

		    //Set run-time options

		    RenderOptionsSpec processSpec = new RenderOptionsSpec();

		    processSpec.setLocale("en_US");

			//Specify user agent values

			String agent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1;.NET CLR 1.1.4322)";

			//Specify env values

			String envValues = "CONTENT_TYPE=application/pdf&CONTENT_TYPE=application/vnd.adobe.xdp+xml";

			//Create class holders to pass to ProcessFormSubmission

			BLOBHolder outProcessFormSubmissionResultDoc = new BLOBHolder(); 

			javax.xml.rpc.holders.StringHolder clickedButton = new javax.xml.rpc.holders.StringHolder();

			BLOBHolder outXML = new BLOBHolder();

			BLOBHolder validationErrorsList = new BLOBHolder();

			javax.xml.rpc.holders.ShortHolder action = new javax.xml.rpc.holders.ShortHolder(); 

			MyArrayOf_xsd_anyTypeHolder attachments = new MyArrayOf_xsd_anyTypeHolder();

			FormsResultHolder processFormSubmissionResult = new FormsResultHolder(); 

			//Invoke the processFormSubmission method

		  	formsOb.processFormSubmission(

				inForm,

				envValues ,

				agent,

				processSpec,

				outProcessFormSubmissionResultDoc,

				clickedButton,

				outXML,

				validationErrorsList,

				action,

				attachments,

				processFormSubmissionResult);

			//Get the FormResult from the FormsResultHolder	

			FormsResult formResult = processFormSubmissionResult.value ; 

			//Get the attachments in submitted posted form 

			//Use the MyArrayOf_xsd_anyTypeHolder object

			//that is passed to processFormSubmission			  

			Object[] myAttachments = attachments.value; 

			if (myAttachments != null)

			{

				BLOB myatt = (BLOB) myAttachments[0];

			}

			//Get the processing state

		 	short processState = formResult.getAction();

		 	//Get the BLOB object that represents the processed form

		 	BLOB formOut = formResult.getOutputContent();

			//Determine if the form data is ready to be processed

			if (processState == 0)

		  	{

		 	 //Determine the content type of the data

		  	String myContentType = formResult.getContentType();

		  	if (myContentType.equals("application/vnd.adobe.xdp+xml")){

				//Create a byte array using the BLOB object

				byte [] formDataOutStream = formOut.getBinaryData();

		  		//Create an InputStream object

		  		InputStream formInputStream = new  ByteArrayInputStream(formDataOutStream);

		  		//Create DocumentBuilderFactory and DocumentBuilder objects

		   		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

		   		DocumentBuilder builder = factory.newDocumentBuilder();

		   		org.w3c.dom.Document myDOM = builder.parse(formInputStream);

		   		//Call for each field in the form

		  		String Amount = getNodeText("mortgageAmount", myDOM);

		  		String myLastName =  getNodeText("lastName", myDOM); 

		  		String myFirstName = getNodeText("firstName", myDOM);

		 		//Write the form data to the web browser

		  		pp.println("<p> The form data is :<br><br>" +

					  "<li> The mortgage amount is "+ Amount+"" +

					  "<li> Last name is "+ myLastName+"" +

					  "<li> First name is "+ myFirstName+"")	;

				  }

		else if (myContentType.equals("application/pdf")){

			//Create a PDF file

			File myPDFFile = new File("C:\\Adobe\\tempPDF.pdf");

			//Create a byte array using the BLOB object

	  		byte [] pdfOutputStream = formOut.getBinaryData();

			//Create a Java FileOutputStream object

			FileOutputStream myOutput = new FileOutputStream(myPDFFile) ;

			//Write the byte array contents to the file

			myOutput.write(pdfOutputStream);

			myOutput.close();				

			}

		  }

	}catch (Exception e) {

			 System.out.println("The following error occurred during this operation " +e.getMessage());

		}

	}

	private String getNodeText(String nodeName, org.w3c.dom.Document myDOM)

		{

		  // Get the Node by name

		  NodeList oList = myDOM.getElementsByTagName(nodeName);

		  Node myNode = oList.item(0); 

		  NodeList oChildNodes = myNode.getChildNodes();

		 String sText = "";

		 for (int i = 0; i < oChildNodes.getLength(); i++)

			 {

			 Node oItem = oChildNodes.item(i);

		     if (oItem.getNodeType() == Node.TEXT_NODE)

			 {

			   sText = sText.concat(oItem.getNodeValue());

			 }

			}

			return sText;

			}

	}

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