how to append file content in velocity in apache camel - apache-camel

Question

I am trying to write a simple sample :) on Apache-camel velocity. It is supposed to pick up a file and insert its content in a pre-written text (in .vm file). But it just puts the file name in the place. Here is my scripts.
blueprint.xml
<camelContext id="_context1" xmlns="http://camel.apache.org/schema/blueprint">
<route id="_route1">
<from id="_from1" uri="file:work/velocityFileInput"/>
<setHeader headerName="receiver" id="_setHeader1">
<simple>sir</simple>
</setHeader>
<setHeader headerName="senderName" id="_setHeader1">
<simple>Magfa co.</simple>
</setHeader>
<setHeader headerName="meetingAddress" id="_setHeader1">
<simple> Tehran , Iran</simple>
</setHeader>
<setHeader headerName="senderPersonalName" id="_setHeader1">
<simple>Ehsan Zangeneh</simple>
</setHeader>
<to id="_to1" uri="velocity:email.vm"/>
<log message="${body}"></log>
</route>
</camelContext>
and here is my .vm file content
Hello dear ${headers.receiver},
This letter is sent from ${headers.senderName} to inform you that you are
invited to the meeting in the address of '${headers.meetingAddress}'.
The meeting is about
${in}
Best regards
${headers.senderPersonalName}
instead of ${in}, I also tried ${body} which didnt work.

Answer 1

Try to convert the body to string after retrieving content from URI the file.
Might this work, Your route will be like this
<route id="_route1">
<from id="_from1" uri="file:work/velocityFileInput"/>
<convertBodyTo id="_convertBodyFileContent" type="java.lang.String"/>
<setHeader headerName="receiver" id="_setHeader1">
<simple>sir</simple>
</setHeader>
<setHeader headerName="senderName" id="_setHeader1">
<simple>Magfa co.</simple>
</setHeader>
<setHeader headerName="meetingAddress" id="_setHeader1">
<simple> Tehran , Iran</simple>
</setHeader>
<setHeader headerName="senderPersonalName" id="_setHeader1">
<simple>Ehsan Zangeneh</simple>
</setHeader>
<to id="_to1" uri="velocity:email.vm"/>
<log message="${body}"></log>
</route>
and here is your .vm file content
Hello dear ${headers.receiver},
This letter is sent from ${headers.senderName} to inform you that you are
invited to the meeting in the address of '${headers.meetingAddress}'.
The meeting is about
${body}
Best regards
${headers.senderPersonalName}