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POHow do I convert the map returned to Camel into JSON?
 

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  1. POHow do I convert the map returned to Camel into JSON?
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    <p>This seems like such a simple thing to do, yet I can't seem to find it in the Camel documentation.</p> <p>Related to my last question i.e., <a href="https://stackoverflow.com/questions/19306106/get-beancreationexception-when-try-to-add-jackson-library">Get BeanCreationException when try to add Jackson Library</a> I now have my code putting the JMS logging response messages into JSON format.</p> <p>Here's what I currently get when I run my code:</p> <pre><code>23118 [hello.world.request.timer] INFO hello.world.request - Exchange[Id:e93861e4- a5be-4d63-b658-5939f414e595, ExchangePattern:InOnly, Properties: {CamelToEndpoint=log://hello.world.request?showAll=true, CamelTimerFiredTime=Fri Oct 11 12:03:20 EDT 2013, CamelTimerPeriod=10000, CamelTimerName=hello.world.request.timer}, Headers:{firedTime=Fri Oct 11 12:03:20 EDT 2013}, BodyType:null, Body:null, Out: null] Returning Map key= fruit1DataType, value= String key= fruit1, value= apple key= fruit1Calories, value= 95 key= fruit1ColorDataType, value= String key= fruit1CaloriesDataType, value= int key= fruit1Color, value= red 23122 [hello.world.request.timer] INFO hello.world.response - Exchange[Id:e93861e4- a5be-4d63-b658-5939f414e595, ExchangePattern:InOnly, Properties: {CamelToEndpoint=log://hello.world.response?showAll=true, CamelTimerFiredTime=Fri Oct 11 12:03:20 EDT 2013, CamelTimerPeriod=10000, CamelTimerName=hello.world.request.timer}, Headers:{firedTime=Fri Oct 11 12:03:20 EDT 2013}, BodyType:byte[], Body: {"fruit1DataType":"String","fruit1":"apple","fruit1Calories":"95","fruit1ColorDataType":"St ring","fruit1CaloriesDataType":"int","fruit1Color":"red"}, Out: null] </code></pre> <p>Ideally I'd just like to have Camel convert the contents of the map returned to JSON and print it to the console like this:</p> <pre><code>{"fruit1DataType":"String","fruit1":"apple","fruit1Calories":"95","fruit1ColorDataType":"String","fruit1CaloriesDataType":"int","fruit1Color":"red"}, Out: null] </code></pre> <p>How do I modify my applicationContext.xml to have Camel do this?</p> <p>Here's my current applicationContext.xml:</p> <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt; &lt;beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:camel="http://camel.apache.org/schema/spring" xmlns:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"&gt; &lt;bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor" /&gt; &lt;context:component-scan base-package="sample" /&gt; &lt;context:annotation-config /&gt; &lt;camel:camelContext id="HelloWorldContext"&gt; &lt;!-- Add Jackson library to render Java Map into JSON --&gt; &lt;camel:dataFormats&gt; &lt;camel:json id="jack" library="Jackson"/&gt; &lt;/camel:dataFormats&gt; &lt;camel:route&gt; &lt;!-- sends a request to the hello world JMS queue every 10 seconds --&gt; &lt;camel:from uri="timer://hello.world.request.timer?fixedRate=true&amp;amp;period=10000" /&gt; &lt;camel:to uri="log:hello.world.request?level=INFO?showAll=true" /&gt; &lt;camel:bean ref="helloWorld" /&gt; &lt;!-- now print out the map in JSON format --&gt; &lt;camel:marshal ref ="jack"/&gt; &lt;camel:to uri="log:hello.world.response?level=INFO?showAll=true" /&gt; &lt;/camel:route&gt; &lt;/camel:camelContext&gt; &lt;bean id="jms" class="org.apache.activemq.camel.component.ActiveMQComponent"&gt; &lt;property name="configuration" ref="jmsConfig" /&gt; &lt;/bean&gt; &lt;bean id="jmsConfig" class="org.apache.camel.component.jms.JmsConfiguration"&gt; &lt;property name="connectionFactory" ref="jmsConnectionFactory" /&gt; &lt;property name="transacted" value="false" /&gt; &lt;property name="concurrentConsumers" value="1" /&gt; &lt;/bean&gt; &lt;bean id="jmsConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory"&gt; &lt;property name="brokerURL" value="vm://localhost" /&gt; &lt;property name="redeliveryPolicy" ref="redeliveryPolicy" /&gt; &lt;property name="prefetchPolicy" ref="prefetchPolicy" /&gt; &lt;/bean&gt; &lt;bean id="prefetchPolicy" class="org.apache.activemq.ActiveMQPrefetchPolicy"&gt; &lt;property name="queuePrefetch" value="5" /&gt; &lt;/bean&gt; &lt;bean id="redeliveryPolicy" class="org.apache.activemq.RedeliveryPolicy"&gt; &lt;property name="maximumRedeliveries" value="1" /&gt; &lt;property name="backOffMultiplier" value="2" /&gt; &lt;property name="initialRedeliveryDelay" value="2000" /&gt; &lt;/bean&gt; &lt;/beans&gt; </code></pre>
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