Quick Start (Base64): Handling submitted forms using the web service API

The following code example handles a form that is submitted as XML. The values that correspond to the fields named mortgageAmount, lastName, and firstName are displayed. A user-defined method named getNodeText is used in this quick start. It accepts an org.w3c.dom.Document instance and a string value that specifies the node name. This method returns a string value that represents the value of the node. (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.   
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 { 
    public void doPost(HttpServletRequest req, HttpServletResponse resp) 
        throws ServletException, IOException { 
            //Create a FormsService object 
            com.adobe.idp.services.FormsServiceServiceLocator sl = new FormsServiceServiceLocator(); 
            FormsService formsOb = sl.getFormsService(); 
            USERNAME_PROPERTY, "administrator"); 
            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  
            //Set run-time options 
            RenderOptionsSpec processSpec = new RenderOptionsSpec(); 
            //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/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 
                envValues , 
            //Get the FormResult from the FormsResultHolder     
            FormsResult formResult = processFormSubmissionResult.value ;  
            //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+"")    ; 
    }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; 

// Ethnio survey code removed