XI Mail Adapter: An approach for sending emails with attachment with help of Java mapping

From: MyAddress@company.com

Date: Tue, 17 Apr 2007 13:57:38 +0200 (MEST)

Message-ID: <18992192.1176811058601.JavaMail.D002945@WDFN00174410A>

To: YourAddress@company.com

Subject: My Test

Mime-Version: 1.0

Content-Type: multipart/mixed; boundary=”—-=_Part_0_138093.1176811058539″

X-SAP: out

_Part_0_138093.1176811058539

Content-Type: text/plain; charset=us-ascii

Content-Transfer-Encoding: 7bit

Test

_Part_0_138093.1176811058539

Content-Type: application/xml; name=DOM_IN.xml

Content-Transfer-Encoding: 7bit

Content-Disposition: attachment; filename=DOM_IN.xml

“A00”,2,3,4,5,6

“N90”,2,3,4,5,6

_Part_0_138093.1176811058539–

<?xml version=”1.0″ encoding=”UTF-8″?>

  <ns:Mail xmlns:ns=”http://sap.com/xi/XI/Mail/30“>

    <Subject>OrderResponse</Subject>

  <From>”Me”&lt;MyName@MyCompany.com&gt;</From>

  <To>”You”&lt;YourName@YourCompany.com&gt;</To>

  <Content_Type>multipart/mixed; boundary=”–AaZz”</Content_Type>

  <Content>—-AaZz

Content-Type: text/plain; charset=UTF-8

Content-Disposition: inline

This is a sample file

—-AaZz

Content-Type: application/csv; name=file.csv

Content-Disposition: attachment; filename=file.csv

&quot;A00&quot;,2,3,4,5,6

&quot;N90&quot;,2,3,4,5,6

—-AaZz–

</Content>

  </ns:Mail>

package sample;

import com.sap.aii.mapping.api.*;

import java.io.*;

public class MyMessageAsAttachment extends AbstractTransformation {

  // Main class for local test

  public static void main(String[] args) {

    try {

      InputStream in = new FileInputStream(new File(“in.xml”));

      OutputStream out = new FileOutputStream(new File(“out.xml”));

      MyMessageAsAttachment myMapping = new MyMessageAsAttachment();

      myMapping.execute(in, out);

      } catch (Exception e) {

        e.getMessage();

      }

  }

  public void transform(TransformationInput arg0, TransformationOutput arg1)  throws StreamTransformationException {

            this.execute(arg0.getInputPayload().getInputStream(), arg1.getOutputPayload().getOutputStream());

  }

  public void execute(InputStream in, OutputStream out) throws StreamTransformationException {

    String mailSubject = “OrderResponse”;

    String mailSender = “\”Me\”&lt;MyName@MyCompany.com&gt;”;

    String mailReceiver = “\”You\”&lt;YourName@YourCompany.com&gt;”;

    String attachmentName = “file.xml”;

    String boundary = “–AaZz”;

    String mailContent = “This is a sample file”;

    String CRLF = “\r\n”;

    try {

      // 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 + 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);

      // last boundary

      output = CRLF + CRLF +”–” + boundary + “–” + CRLF;

      out.write(output.getBytes());

      // finish mail package

      out.write(“</Content></ns:Mail>”.getBytes());

    } catch (IOException e) {

      throw new StreamTransformationException(e.getMessage());

    }

  }

  protected static void copySource(InputStream in, OutputStream out) throws IOException {

    byte[] buf = new byte[in.available()];

    in.read(buf);

    String sbuf = new String(buf);

    // 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(“UTF-8”));

  }

}

—-AaZz

Content-Type: application/pdf; name=”Invoice.pdf”

Content-Transfer-Encoding: base64

Content-Disposition: attachment; filename=”Invoice.pdf”

5/IcVrU0TLcKKKKYgooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKACiiigAooooAKKKKAC

iiigAooooAa6B0ZT0YYrm4o8iW3fqQV/EVvNdxpcCFshiM57Vk6inkagWHAkAYfXvTRlV2uuhmq5

fS5oj1ikWQfjwf1xU1j/AKlar3n7q5kx9yVc/n/9eiNv9HQe5pp2Jqe9FGtHUwqrayeZGCeo4NWV

rS9zCKtoRMNrEU5TSzAcNTFquhFrMsIcgis65XyrvcOjc/41eU4qDUE3RBu6n9KFozXdApqRWqtG

…