Java Mapping: payload as mail attachment and dynamic file name .

Question

Hi,
I have written this piece of java code.
The code includes XPATH for fetching dynamic filename and the copysource( in, out ) to copy the content of payload as mail attchment.
The code seems to work fine, when either of the functionality is implemented.
but when both are implemented together ie parsing for xpath then again parsing to copy payload, then it doesnt executes the latter path i.e the payload is not fetched in the attachment.
public class MailPackage implements StreamTransformation {
  public void setParameter(Map map) {
  public void execute(InputStream in, OutputStream out)
          throws StreamTransformationException {
  String mailSubject = "test mail";
  String mailSender = "aaaaaaaa";
  String mailReceiver = "[email protected]";
  String attachmentName = null;
  DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = null;
  factory.setNamespaceAware(false);
factory.setValidating(false);
     try {
          builder = factory.newDocumentBuilder();
     Document doc = null;
      doc = builder.parse(in);
          String XPATH ="/*/Invoice/InvoiceHeader/InvoiceNumber/text()";
          Node fieldValueNode = org.apache.xpath.XPathAPI.selectSingleNode(doc,XPATH);
          System.out.print(fieldValueNode);
          attachmentName = fieldValueNode.getNodeValue() +".xml";
  String boundary = "--";
  String mailContent = "This is a sample file";
  String CRLF = "\r\n";
    //     create XML structure of mail package
    String output ="<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
           + "<ns:Mail xmlns:ns=\"http://sap.com/xi/XI/Mail/30\">"
           + "<Subject>" + mailSubject     + "</Subject>"
           + "<From>" + mailSender     + "</From>"
           + "<To>" + mailReceiver     + "</To>"
           + "<Content_Type>multipart/mixed; boundary=\"" + boundary + "\"</Content_Type>"
           + "<Content>";
    out.write(output.getBytes());
    // create the declaration of the MIME parts
    //First part
    output = "--" + boundary + CRLF
           + "Content-Type: text/plain; charset=UTF-8" + CRLF
           + "Content-Disposition: inline" + CRLF + CRLF
           + mailContent + CRLF
    //Second part
    + "--" + boundary + CRLF
    + "Content-Type: application/xml; name=" + attachmentName + CRLF
    + "Content-Disposition: attachment; filename=" + attachmentName + CRLF + CRLF;
    out.write(output.getBytes());
    //Source is taken as attachment
    copySource(in, out);
    out.write("</Content></ns:Mail>".getBytes());
  } catch (Exception ie) {
    throw new StreamTransformationException(ie.getMessage());
protected static void copySource(InputStream in, OutputStream out)throws IOException {
    byte[] bbuf = new byte[in.available()];
    int bblen = in.read(bbuf);
   if (!(bblen < 0)) {
      String sbuf = new String(bbuf);
       //replace all control characters with escape sequences
     sbuf = sbuf.replaceAll("&", "&amp;");
     sbuf = sbuf.replaceAll("\"", "&quot;");
     sbuf = sbuf.replaceAll("'", "&apos;");
    sbuf = sbuf.replaceAll("<", "&lt;");
    sbuf = sbuf.replaceAll(">", "&gt;");
    out.write(sbuf.getBytes());
Povide your suggestions.

Answer 1

Hi,
This is the sample o/p that I get by opening the mail attachment using notepad.
<?xml version="1.0" encoding="UTF-8"?>
<InvoiceTransmission><InvoiceTransmissionHeader><InvoiceCreationDate>2008-12-03T00:00:00</InvoiceCreationDate><Version>2.0.2</Version></InvoiceTransmissionHeader><Invoice><InvoiceHeader><CustomerEntityID>LH</CustomerEntityID><IssuingEntityID>009140559</IssuingEntityID><InvoiceNumber>913353669</InvoiceNumber><InvoiceIssueDate>2008-12-03</InvoiceIssueDate><InvoiceType InvoiceTransactionType="OR">INV</InvoiceType><InvoiceDeliveryLocation>aaa</InvoiceDeliveryLocation><TaxInvoiceNumber>Not Applicable</TaxInvoiceNumber><InvoiceCurrencyCode>USD</InvoiceCurrencyCode><InvoiceTotalAmount>517174.63</InvoiceTotalAmount><InvoiceIDDetails InvoiceIDType="BT"><InvoiceIDVATRegistrationNumber>0000000000</InvoiceIDVATRegistrationNumber><InvoiceIDName1>aaaaaaaaaaaaaaa</InvoiceIDName1><InvoiceIDName2>bbbbbbHKG</InvoiceIDName2><InvoiceIDCity>ccccccccc ccccc</InvoiceIDCity><InvoiceIDCountryCode>HK</InvoiceIDCountryCode></InvoiceIDDetails><InvoiceIDDetails InvoiceIDType="II"><InvoiceIDVATRegistrationNumber>0000000000</InvoiceIDVATRegistrationNumber><InvoiceIDName1>eeeeeeee</InvoiceIDName1><InvoiceIDName2>PAY BY WIRE TRANSFER</InvoiceIDName2><InvoiceIDCity>fffffffffffffff, NA</InvoiceIDCity><InvoiceIDCustomField ID="1"><InvoiceIDCustomFieldDescription>Company Registration Number</InvoiceIDCustomFieldDescription><InvoiceIDCustomFieldValue>0000000000</InvoiceIDCustomFieldValue></InvoiceIDCustomField></InvoiceIDDetails></InvoiceHeader><SubInvoiceHeader><InvoiceLine><ItemNumber>001</ItemNumber><ItemQuantity><ItemQuantityType>IN</ItemQuantityType><ItemQuantityFlag>GR</ItemQuantityFlag><ItemQuantityQty>28134.000</ItemQuantityQty><ItemQuantityUOM>USG</ItemQuantityUOM></ItemQuantity><ItemQuantity><ItemQuantityType>DL</ItemQuantityType><ItemQuantityFlag>GR</ItemQuantityFlag><ItemQuantityQty>106498.775</ItemQuantityQty><ItemQuantityUOM>LT</ItemQuantityUOM></ItemQuantity><ItemDeliveryReferenceValue ItemDeliveryReferenceType="DTN">590365</ItemDeliveryReferenceValue><ItemDeliveryReferenceValue ItemDeliveryReferenceType="!
ARN">DAL
CH</ItemDeliveryReferenceValue><ItemDeliveryReferenceValue ItemDeliveryReferenceType="FNO">mmmmmmmmm</ItemDeliveryReferenceValue><ItemDeliveryLocation>pppp</ItemDeliveryLocation><ItemReferenceLocalDate
If you notice the problem is, the undesired "exclamation mark" that gets added in some fields before the actual value.
In the above case.. look at "ItemDeliveryReferenceType="! ARN">DAL"
the exclamation mark before value "ARN is unwanted, which leads to improper XML formation.
Cant figure out why is this coming.
Regards,
Faria Mithani