Tutorial-Example-ReportIncident-Part5

Part 5

We continue from part 4 where we have the routing in place. However as you might have noticed that we aren't quiet there yet with a nice solution.

These issues are still there as we:

• is creating and starting Camel manually
• is starting the routing by manually sending a message to direct:start

Of course for both issues there is a more convienient solution with Camel. But as this tutorial is very much about showing how things is done manually and also peeks how Camel does this internally for you. So let's get rocking

Starting Camel automatically

Our current deployment model is as a war and we have the web.xml to help start things. Well in fact we will leverage Spring to start the world . We use it's ContextListener

	<!-- the listener that kick-starts Spring -->
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>

Then we need a standard Spring XML file so we create a new file in src/main/resources and name it camel-config.xml. Before we start editing this XML file we need to link to it from the web.xml file. So we add this snippet to the web.xml:

	<!-- location of spring xml files -->
	<context-param>
	    <param-name>contextConfigLocation</param-name>
            <param-value>classpath:camel-config.xml</param-value>
	</context-param>

Now we are ready to edit the camel-config.xml file that is a standard Spring XML bean file. So you can add standard spring beans and whatnot you like to do and can do with Spring.

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
            http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

</beans>

Now we are nearly there, we just need to add Camel to the Spring XML file, so Spring knows Camel exists and can start it.