how to set jms message custom header using xpath in camel route

Question

I am using camel route builder to move one activemq jms message from one queue to another by setting some custom header, by using xpath to read the node value from xml. nothing has been set. Please suggest if you know the answer.

from("activemq:com.queue1")
    .setHeader("orderNumber").xpath("/orderRequest/authNumber")
                    .to("activemq:com.queue2")
            .end();

XML would look like

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns3:orderRequest xmlns:ns2="http://www.company.com/services/entity/v1" 
                  xmlns:ns3="http://www.company.com/services/dataobject/v1">    
    <authNumber>A81585</authNumber>
</ns3:orderRequest>

It is a big xml, SO I couldn't share, but lets try for first element under root node. like <?xml version="1.0" encoding="UTF-8" standalone="yes"?><ns3:orderRequest xmlns:ns2="company.com/services/entity/v1" xmlns:ns3="company.com/services/dataobject/…> — Dkr
You need to setup the namespace for the xpath, see more at camel.apache.org/xpath — Claus Ibsen
You may want to tell xpath which type you want to use for the order number, should it be String or Integer etc .setHeader("orderNumber").xpath("/orderRequest/authNumber", String.class) — Claus Ibsen

Petter Nordlander Petter Nordlander · Accepted Answer · 2015-07-09T05:26:38

XML with namespaces requires the name spaces to be setup correctly.

You need to setup a namespace handler with something like this:

Namespaces ns = new Namespaces("ns3", "http://www.company.com/services/dataobject/v1");

....
xpath("/ns3:orderRequest/ns3:authNumber",ns)
...

how to set jms message custom header using xpath in camel route

1 Answers