camel-2.8.x/components/camel-spring/src/test/resources/org/apache/camel/spring/processor/onexception/deadLetterChannelHandledExampleTest.xml

<?xml version="1.0" encoding="UTF-8"?>
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<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.xsd
       http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd
    ">

    <!-- START SNIPPET: e1 -->
    <!-- setup our error handler as the deal letter channel -->
    <bean id="errorHandler" class="org.apache.camel.builder.DeadLetterChannelBuilder">
        <property name="deadLetterUri" value="mock:error"/>
    </bean>

    <!-- this is our POJO bean with our business logic defined as a plain spring bean -->
    <bean id="orderService" class="org.apache.camel.spring.processor.onexception.OrderService" />

    <!-- this is the camel context where we define the routes -->
    <!-- define our error handler as a global error handler -->
    <camelContext errorHandlerRef="errorHandler" xmlns="http://camel.apache.org/schema/spring">

      <onException>
        <!-- the exception is full qualified names as plain strings -->
        <!-- there can be more just add a 2nd, 3rd exception element (unbounded) -->
        <exception>org.apache.camel.spring.processor.onexception.OrderFailedException</exception>
        <!-- we can set the redelivery policy here as well -->
        <redeliveryPolicy maximumRedeliveries="1" />
        <!-- mark this as handled -->
        <handled>
          <constant>true</constant>
        </handled>
        <!-- let our order service handle this exception, call the orderFailed method -->
        <bean ref="orderService" method="orderFailed" />
        <!-- and since this is a unit test we use mock for assertions -->
        <to uri="mock:error" />
      </onException>

      <route>
        <!-- the route -->
        <from uri="direct:start" />
        <!-- in the normal route then route to our order service and call handleOrder method -->
        <bean ref="orderService" method="handleOrder" />
        <!-- and since this is a unit test we use mock for assertions -->
        <to uri="mock:result" />
      </route>

    </camelContext>
    <!-- END SNIPPET: e1 -->

</beans>