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string-template:templateName[?options]

Where templateName is the classpath-local URI of the template to invoke; or the complete URL of the remote template.

You can append query options to the URI in the following format, ?option=value&option=value&...

Options

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Camel will store a reference to the resource in the message header in the with key, org.apache.camel.stringtemplate.resource. The Resource is an org.springframework.core.io.Resource object.

Hot reloading

The stringtemplate string template resource is by default hot-reloadable for both file and classpath resources (expanded jar). Setting the If you set contentCache=true then , Camel will only load loads the resource only once , and thus hot-reloading is not possible. This scenario can be used in production usage when the resource never changes.

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Camel will provide exchange information as attributes (just a java.util.Map) to the string template. The Exchange is transfered as:

Samples

For example you could use something likea string template as follows in order to formulate a response to a message:

from("activemq:My.Queue").
  to("string-template:com/acme/MyResponse.tm");

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The Email Sample

In this sample we want to use StringTemplate as templating for a string template to send an order confirmation email. The email template is laid out in StringTemplate as:

Dear $headers.lastName$, $headers.firstName$

Thanks for the order of $headers.item$.

Regards Camel Riders Bookstore
$body$

And the java code is as follows:

{snippet:id=e1|lang=java|url=camel/trunk/components/camel-stringtemplate/src/test/java/org/apache/camel/component/stringtemplate/StringTemplateLetterTest.java}

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