I went ahead and wrote a simple bespoke Axis Handler. By invoking this from the standard "HandlerBean" in the module processor of my communication channel, I was able to overwrite and set new MIME headers in the Attachment Parts of my SOAP Message. I was also able to change the contents of the SOAP Envelope; for example, I found I could easily delete the SOAP Header. However, I've encountered a problem when I try and update the MIME headers of the SOAP Part i.e. the Part of the multipart/related message containing the SOAP Envelope.
Does anyone know why I can't seem to change the MIME headers of the SOAP Part?
The Axis API calls I used were as follows:
(1) To update the MIME headers of attachements in my SOAP message:
(a) Message = MessageContext.getCurrentMessage()
(b) Iterator = Message.getAttachments()
(c) AttachmentPart = Iterator.getNext()
(d) AttachmentPart.setMimeHeader(name, value)
This works.
(2) To update the MIME headers of the SOAP (root) Part:
(a) Message = MessageContext.getCurrentMessage()
(b) SOAPPart = Message.getSOAPPart()
(c) SOAPPart.setMimeHeader(name, value)
This DOESN'Twork - the MIME headers of the SOAP Part never change.
(3) To update the SOAP Envelope (delete the SOAP Header):
(a) Message = MessageContext.getCurrentMessage()
(b) SOAPPart = Message.getSOAPPart()
(c) SOAPEnvelope = SOAPPart.getEnvelope()
(d) SOAPHeader = SOAPEnvelope.getHeader()
(e) SOAPHeader.removeContents()
This works.
I just don't understand why the call to SOAPPart.setMimeHeader() doens't work when I try and insert new MIME headers to the SOAP Part (e.g. "Content-Name") or when I try and change existing MIME headers there (e.g. "Content-ID"). I don't get any errors.
The code of my handler is:
/*
*/
package com.hp.handlers;
import org.apache.axis.handlers.BasicHandler;
import org.apache.axis.AxisFault;
import org.apache.axis.attachments.AttachmentPart;
import org.apache.axis.Message;
import org.apache.axis.MessageContext;
import java.util.Iterator;
import javax.xml.soap.SOAPMessage;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPHeader;
import javax.xml.rpc.handler.soap.SOAPMessageContext;
/**
The <code>GerryAxis</code> handler class sets MIME headers.
<p>
This handler accepts the following parameters:
<ul>
<li><b>name</b>: Name of header
<li><b>value</b>: Value for header
<li><b>attachment</b>: Attachment number
</ul>
*/
public class GerryAxis extends BasicHandler {
/* (non-Javadoc)
*/
public void invoke(MessageContext msgContext) throws AxisFault {
int i=0;
boolean found = false;
AttachmentPart ap = null;
javax.xml.soap.SOAPPart sp = null;
StringBuffer debug = new StringBuffer();
try {
// The MIME header change is controlled from the parameters "name", "value", "attachment" which are
// set in the module processor as parameters.
String name = (String)getOption("name");
String value = (String)getOption("value");
String attachment = (String)getOption("attachment");
Message msg = msgContext.getCurrentMessage();
// Get the SOAP Part (the part holding the SOAP Envelope
sp = msg.getSOAPPart();
if (sp == null)
debug.append("getSOAPPart returned <null> / ");
// Set a MIME header in the SOAP Part - THIS DOES NOT WORK - WHY?
sp.setMimeHeader(name,value);
// Remove the SOAP Header for the Envelope - this works fine
SOAPEnvelope se = sp.getEnvelope();
SOAPHeader sh = se.getHeader();
sh.removeContents();
// For debugging - writes some debuggin information to a "DEBUG" MIME header in the first Attachement Part
debug.append("name = " + name +" / ");
debug.append("value = " + value +" / ");
debug.append("attachment = " + attachment + " / ");
debug.append("getMimeHeader for SOAPPart returned " + sp.getMimeHeader(name)[0] + " / ");
debug.append("getContentId for SOAPPart returned " + sp.getContentId() + " / ");
// Update the specified attachement's MIME header - this works fine
Iterator it = msg.getAttachments();
while (it.hasNext()) {
i++;
ap = (AttachmentPart) it.next();
if (i == new Integer(attachment).intValue()) {
found = true;
break;
}
}
if (found) {
ap.removeMimeHeader(name);
ap.setMimeHeader("DEBUG",debug.toString());
ap.setMimeHeader(name,value);
}
msg.saveChanges();
}
catch (Exception e) {
throw AxisFault.makeFault(e);
}
}
}
Thanks
Edited by: Gerry Deighan on Oct 3, 2010 10:27 PM
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