ServletListener Component
Available as of Camel 2.11
This component is used for bootstrapping Camel applications in web applications. For example beforehand people would have to find their own way of bootstrapping Camel, or rely on 3rd party frameworks such as Spring to do it.
There may be situations where you want a pure Camel based solution, without the extra overhead of Spring Framework.
Sidebar
This component works as a javax.servlet.ServletContextListener
, which works in any web container of today, as well any older containers.
There may be solutions around the corner which is based on Servlet 3.x and annotation driven configuration, or using CDI or other means.
This component is old school and based on the pure API from Servlet 2.x, which means it works in any web container. Also the old ones, which was the goal.
TODO: Maven dependency
Using
To use this you need to configure the org.apache.camel.component.servletlistener.CamelServletContextListener
in the WEB-INF/web.xml
file as shown below:
TODO: myweb.xml
Example
See Servlet Tomcat No Spring Example.
Options
The org.apache.camel.component.servletlistener.CamelServletContextListener
supports the following options which can be configured as context-param in the web.xml file.
Option |
Type |
Description |
---|---|---|
propertyPlaceholder.XXX |
|
To configure Using PropertyPlaceholder in Camel. You should prefix the option with "propertyPlaceholder.", for example to configure the location, use propertyPlaceholder.location as name. You can configure all the options from the Properties component. |
jmx.XXX |
|
To configure JMX. You should prefix the option with "jmx.", for example to disable JMX, use jmx.disabled as name. You can configure all the options from |
name |
|
To configure the name of the CamelContext. |
streamCache |
|
Whether to enable Stream Caching. |
trace |
|
Whether to enable Tracing. |
delayer |
|
To set a delay value for Delay Interceptor. |
handleFault |
|
Whether to enable handle fault. |
errorHandlerRef |
|
Refers to a context scoped Error Handler to be used. |
autoStartup |
|
Whether to start all routes when starting Camel. |
useMDCLogging |
|
Whether to use MDC Logging. |
useBreadcrumb |
|
Whether to use Breadcrumb. |
managementNamePattern |
|
To set a custom naming pattern for JMX MBeans. |
threadNamePattern |
|
To set a custom naming pattern for threads. |
properties.XXX |
|
To set custom properties on |
routebuilder.XXX |
|
To configure routes to be used. See below for more details. |
XXX |
|
To set any option on CamelContext. |