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| Read blob message using Java Compute node throwing exception |
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Message
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| anilmekala |
 Posted: Tue Feb 18, 2014 1:30 am Post subject: Read blob message using Java Compute node throwing exception |
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Acolyte
Joined: 19 Oct 2012
Posts: 63
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Hi All,
I am getting exception while reading blob message in JCN.
I have create flow MQ INput --> JCN --> MQ out . I have set Message domain as blob when am trying to read the blog message am getting null pointer exception. I am pasting my code as below
MbOutputTerminal out = getOutputTerminal("out");
MbOutputTerminal alt = getOutputTerminal("alternate");
MbMessage inMessage = contact admin.getMessage();
MbElement inRoot = inMessage.getRootElement();
MbElement blob = inRoot.getLastChild();
// create new message
MbMessage outMessage = new MbMessage(inMessage);
MbElement outputRoot = outMessage.getRootElement();
MbElement outputBody = outputRoot.createElementAsLastChild(MbBLOB.PARSER_NAME);
byte[] mybytes=(byte[]) blob.getValue();
String MessageBodyString = new String(mybytes);-- getting null pointer exception.
MessageBodyString = MessageBodyString + " adding string text to mesage body";
//text.concat("Welcome");
MbElement blobData = outputBody.createElementAsFirstChild(MbElement.TYPE_NAME_VALUE, "BLOB", MessageBodyString.getBytes());
MbMessageAssembly outAssembly = new MbMessageAssembly(contact admin,
outMessage);
Please help me to resolve the issue.
Thanks in Advance.
Anil. |
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| Gralgrathor |
| Posted: Tue Feb 18, 2014 1:56 am Post subject: |
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Master
Joined: 23 Jul 2009
Posts: 297
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The ESQL reference to your BLOB would be:
| Code: |
| InputRoot.BLOB.BLOB |
To get at the contents of the blob, you'd therefore have to
| Code: |
MbElement outerblob = inRoot.getLastChild();
MbElement blob = outerblob.getLastChild(); <--
byte[] mybytes=(byte[]) blob.getValue(); |
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| anilmekala |
| Posted: Tue Feb 18, 2014 3:03 am Post subject: |
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Acolyte
Joined: 19 Oct 2012
Posts: 63
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Hi ,
Thank you so much it resolved my issue.
Regards,
Anil. |
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