THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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String
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Template
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The
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string-template:
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component
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allows
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you
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to
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process
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a
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message
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using
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a
...
...
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.
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This
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can
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be
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ideal
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when
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using
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to
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generate
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responses
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for
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requests.
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Maven
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users
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will
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need
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to
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add
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the
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following
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dependency
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to
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their
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pom.xml
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for
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this
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component:
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{code:xml} <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-stringtemplate</artifactId> <version>x.x.x</version> <!-- use the same version as your Camel core version --> </dependency> { |
URI format
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code} h3. URI format {code} string-template:templateName[?options] {code} Where *templateName* is the |
Where templateName is the classpath-local
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URI
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of
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the
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template
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to
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invoke;
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or
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the
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complete
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URL
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of
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the
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remote
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template.
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You
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can
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append
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query
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options
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to
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the
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URI
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in
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the
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following
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format,
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?option=value&option=value&...
Options
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}} h3. Options {div:class=confluenceTableSmall} || Option || Default || Description || | {{contentCache}} | {{false}} | Cache for the resource content when its loaded. \\ Note : as of *Camel 2.9* cached resource content can be cleared via JMX using the endpoint's {{clearContentCache}} operation. || | {{delimiterStart}} | {{null}} | *Since Camel 2.11.1*, configuring the variable start delimiter | | {{delimiterStop}} | {{null}} | *Since Camel 2.11.1*, configuring the variable end delimiter | {div} h3. Headers Camel will store a reference to the resource in the message header with key, {{ |
Headers
Camel will store a reference to the resource in the message header with key, org.apache.camel.stringtemplate.resource
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.
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The
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Resource
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is
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an
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org.springframework.core.io.Resource
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object.
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Hot
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reloading
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The
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string
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template
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resource
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is
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by
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default
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hot-reloadable
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for
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both
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file
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and
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classpath
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resources
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(expanded
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jar).
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If
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you
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set
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contentCache=true
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,
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Camel
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loads
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the
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resource
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only
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once
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and
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hot-reloading
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is
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not
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possible.
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This
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scenario
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can
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be
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used
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in
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production
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when
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the
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resource
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never
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changes.
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StringTemplate
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Attributes
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Camel
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will
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provide
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exchange
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information
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as
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attributes
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(just
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a
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java.util.Map
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)
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to
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the
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string
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template.
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The
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Exchange
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is
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transfered
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as:
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{div:class=confluenceTableSmall} || key || value || | {{exchange}} | The Exchange itself. | | {{headers}} | The headers of the In message. | | {{camelContext}} | The Camel Context. | | {{request}} | The In message. | | {{in}} | The In message. | | {{body}} | The In message body. | | {{out}} | The Out message (only for InOut message exchange pattern). | | {{response}} | The Out message (only for InOut message exchange pattern). | {div} h3. Samples For example you could use a string template as follows in order to formulate a response to a message: {code} |
Samples
For example you could use a string template as follows in order to formulate a response to a message:
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from("activemq:My.Queue").
to("string-template:com/acme/MyResponse.tm");
{code}
h3. The Email Sample
In this sample we want to use a string template to send an order confirmation email. The email template is laid out in {{StringTemplate}} as:
This example works for *camel |
The Email Sample
In this sample we want to use a string template to send an order confirmation email. The email template is laid out in StringTemplate as:
This example works for camel 2.11.0
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.
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If
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your
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camel
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version
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is
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less
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than
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2.11.0,
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the
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variables
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should
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be
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started
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and
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ended
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with
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$.
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} Dear <headers.lastName>, <headers.firstName> Thanks for the order of <headers.item>. Regards Camel Riders Bookstore <body> {code} |
And
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the
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java
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code
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is
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as
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follows:
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{snippet:id=e1|lang=java|url=camel/trunk/components/camel-stringtemplate/src/test/java/org/apache/camel/component/stringtemplate/StringTemplateLetterTest.java} {include:Endpoint See Also} |
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