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POLoading multiple properties files with Camel
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<p>So I'll admit I have a lot going on in my applicationContext.xml, but I'm not sure why I can't add in another properties file called publish.properties, and use it in a similar way to a config.properties I have now. I also have a sensor.properties but its a group of keyvalue pairs (and in any case they load fine too).</p> <p>I've been reading the Camel properties doc i.e., <a href="http://camel.apache.org/properties.html" rel="nofollow">http://camel.apache.org/properties.html</a> but its still not clear to me how I specify multiple properties files so that Camel can resolve them.</p> <p>Here is my current applicationContext.xml that runs, and injects config.properties and sensor.properties just fine:</p> <pre><code><?xml version="1.0" encoding="UTF-8"?> <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"> <bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor" /> <context:component-scan base-package="com.data.world2" /> <context:annotation-config /> <camel:camelContext id="HelloWorldContext">  <camel:dataFormats> <camel:json id="jack" library="Jackson"/> </camel:dataFormats> <camel:route>  <camel:from uri="timer://hello.world.request.timer?fixedRate=true&amp;period={{config.timeout}}&amp;repeatCount={{config.numSamples}}"/> <camel:to uri="log:hello.world.request?level=INFO&amp;showAll=true" /> <camel:bean ref="helloWorld" />  <camel:marshal ref ="jack"/> <camel:convertBodyTo type="java.lang.String" /> <camel:log message="${body}"/>  <camel:log message="Returned Random Sensor Event in JSON"/>  <camel:log message="printing values read from config.properties file"/> <camel:log message=" config.timeout= {{config.timeout}} milliseconds"/> <camel:log message=" config.numSamples= {{config.numSamples}} random Sensor Event(s) ## NOTE: 0 or -1 means generate forever ##"/> <camel:log message=" config.defaultViz= {{config.defaultViz}}"/>  <camel:to uri="log:hello.world.response?level=INFO&amp;showAll=true" />  <camel:to uri="jms:queue:helloworld.response" /> </camel:route> </camel:camelContext>  <util:properties id="sensorProperties" location="classpath:/sensor.properties"/>  <bean class="com.data.world2.SensorEventStore"> <property name="sourceProperties" ref="sensorProperties" /> <property name="defaultViz" value="${config.defaultViz}"/> </bean>  <bean id="properties" class="org.apache.camel.component.properties.PropertiesComponent"> <property name="location" value="classpath:config.properties"/> </bean>   <bean id="bridgePropertyPlaceholder" class="org.apache.camel.spring.spi.BridgePropertyPlaceholderConfigurer"> <property name="location" value="classpath:config.properties"/> </bean> <bean id="jms" class="org.apache.activemq.camel.component.ActiveMQComponent"> <property name="configuration" ref="jmsConfig" /> </bean> <bean id="jmsConfig" class="org.apache.camel.component.jms.JmsConfiguration"> <property name="connectionFactory" ref="jmsConnectionFactory" /> <property name="transacted" value="false" /> <property name="concurrentConsumers" value="1" /> </bean> <bean id="jmsConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory"> <property name="brokerURL" value="vm://localhost" /> <property name="redeliveryPolicy" ref="redeliveryPolicy" /> <property name="prefetchPolicy" ref="prefetchPolicy" /> </bean> <bean id="prefetchPolicy" class="org.apache.activemq.ActiveMQPrefetchPolicy"> <property name="queuePrefetch" value="5" /> </bean> <bean id="redeliveryPolicy" class="org.apache.activemq.RedeliveryPolicy"> <property name="maximumRedeliveries" value="1" /> <property name="backOffMultiplier" value="2" /> <property name="initialRedeliveryDelay" value="2000" /> <property name="useExponentialBackOff" value="true" /> </bean> </beans> </code></pre> <p>I've been trying to add in the following bean in my applicationContext.xml to inject six fields from my publish.properties file into setters/getters in my RandomEventGenerator class:</p> <pre><code> <bean class="com.data.world2.RandomEventGenerator"> <property name="makePub" value="${publish.makePub}"/> <property name="modelPub" value="${publish.modelPub}"/> <property name="serialNumberPub" value="${publish.serialNumberPub}"/> <property name="firmwareRevPub" value="${publish.firmwareRevPub}"/> <property name="sensorTypePub" value="${publish.sensorTypePub}"/> <property name="payloadPub" value="${publish.payloadPub}"/> </bean> </code></pre> <p>along with a variation of the "properties" bean id:</p> <pre><code>  <bean id="publishProperties" class="org.apache.camel.component.properties.PropertiesComponent"> <property name="location" value="classpath:publish.properties"/> </bean> </code></pre> <p>I also tried to combine both properties files inside my properties bean ID as follows:</p> <pre><code> <bean id="properties" class="org.apache.camel.component.properties.PropertiesComponent"> <property name="locations" value="classpath:config.properties,classpath:publish.properties"/> </bean> </code></pre> <p>but I still get the following error:</p> <pre><code>Could not resolve placeholder 'publish.makePub' in string value "${publish.makePub}" </code></pre> <p>But I do remember that I had to add in the bridgePropertyPlaceholder to get the config.properties to work from Spring. Is there a way I can share this bridge for both config.properties and publish.properties? Or is there an easier way to do this?</p> <h1>Updated per feedback from Frederic</h1> <p>Here's my updated applicationContext.xml:</p> <pre><code><?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:camel="http://camel.apache.org/schema/spring" xmlns:context="http://www.springframework.org/schema/context" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor" /> <context:component-scan base-package="com.data.world2" /> <context:annotation-config /> <camel:camelContext id="HelloWorldContext">  <camel:dataFormats> <camel:json id="jack" library="Jackson"/> </camel:dataFormats> <camel:route>  <camel:from uri="timer://hello.world.request.timer?fixedRate=true&amp;period={{config.timeout}}&amp;repeatCount={{config.numSamples}}"/> <camel:to uri="log:hello.world.request?level=INFO&amp;showAll=true" /> <camel:bean ref="helloWorld" />  <camel:marshal ref ="jack"/> <camel:convertBodyTo type="java.lang.String" /> <camel:log message="${body}"/>  <camel:log message="Returned Random Sensor Event in JSON"/>  <camel:log message="printing values read from config.properties file"/> <camel:log message=" config.timeout= {{config.timeout}} milliseconds"/> <camel:log message=" config.numSamples= {{config.numSamples}} random Sensor Event(s) ## NOTE: 0 or -1 means generate forever ##"/> <camel:log message=" config.defaultViz= {{config.defaultViz}}"/>  <camel:to uri="log:hello.world.response?level=INFO&amp;showAll=true" />  <camel:to uri="jms:queue:helloworld.response" /> </camel:route> </camel:camelContext>  <util:properties id="sensorProperties" location="classpath:/sensor.properties"/>  <bean class="com.data.world2.sensor.SensorEventStore"> <property name="sourceProperties" ref="sensorProperties" /> <property name="defaultViz" value="${config.defaultViz}"/> </bean>  <bean class="com.data.world2.RandomEventGenerator"> <property name="makePub" value="${publish.makePub}"/> <property name="modelPub" value="${publish.modelPub}"/> <property name="serialNumberPub" value="${publish.serialNumberPub}"/> <property name="firmwareRevPub" value="${publish.firmwareRevPub}"/> <property name="sensorTypePub" value="${publish.sensorTypePub}"/> <property name="payloadPub" value="${publish.payloadPub}"/> </bean> <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="ignoreResourceNotFound" value="false"/> <property name="locations"> <list> <value>classpath:config.properties</value> <value>classpath:publish.properties</value> </list> </property> </bean>   <bean id="bridgePropertyPlaceholder" class="org.apache.camel.spring.spi.BridgePropertyPlaceholderConfigurer"> <property name="location" value="classpath:config.properties"/> </bean> <bean id="jms" class="org.apache.activemq.camel.component.ActiveMQComponent"> <property name="configuration" ref="jmsConfig" /> </bean> <bean id="jmsConfig" class="org.apache.camel.component.jms.JmsConfiguration"> <property name="connectionFactory" ref="jmsConnectionFactory" /> <property name="transacted" value="false" /> <property name="concurrentConsumers" value="1" /> </bean> <bean id="jmsConnectionFactory" class="org.apache.activemq.ActiveMQConnectionFactory"> <property name="brokerURL" value="vm://localhost" /> <property name="redeliveryPolicy" ref="redeliveryPolicy" /> <property name="prefetchPolicy" ref="prefetchPolicy" /> </bean> <bean id="prefetchPolicy" class="org.apache.activemq.ActiveMQPrefetchPolicy"> <property name="queuePrefetch" value="5" /> </bean> <bean id="redeliveryPolicy" class="org.apache.activemq.RedeliveryPolicy"> <property name="maximumRedeliveries" value="1" /> <property name="backOffMultiplier" value="2" /> <property name="initialRedeliveryDelay" value="2000" /> <property name="useExponentialBackOff" value="true" /> </bean> </beans> </code></pre> <p>Here's the publish.properties file I'm using:</p> <pre><code>publish.makePub=true publish.modelPub=true publish.serialNumberPub=true publish.firmwareRevPub=true publish.sensorTypePub=false publish.payloadPub=true </code></pre> <p>And here are the String Getters and Setters in my RandomEventGenerator class:</p> <pre><code> // getters and setters public String getMakePub() { return makePub; } public void setMakePub(String makePub) { this.makePub = makePub; } public String getModelPub() { return modelPub; } public void setModelPub(String modelPub) { this.modelPub = modelPub; } public String getSerialNumberPub() { return serialNumberPub; } public void setSerialNumberPub(String serialNumberPub) { this.serialNumberPub = serialNumberPub; } public String getFirmwareRevPub() { return firmwareRevPub; } public void setFirmwareRevPub(String firmwareRevPub) { this.firmwareRevPub = firmwareRevPub; } public String getSensorTypePub() { return sensorTypePub; } public void setSensorTypePub(String sensorTypePub) { this.sensorTypePub = sensorTypePub; } public String getPayloadPub() { return payloadPub; } public void setPayloadPub(String payloadPub) { this.payloadPub = payloadPub; } </code></pre> <h1>Updated application.xml per feedback from Claus {and trial and error :-)}</h1> <pre><code><?xml version="1.0" encoding="UTF-8"?> <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"> <bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor" /> <context:component-scan base-package="com.data.world2" /> <context:annotation-config /> <camel:camelContext id="HelloWorldContext">  <camel:dataFormats> <camel:json id="jack" library="Jackson"/> </camel:dataFormats> <camel:route>  <camel:from uri="timer://hello.world.request.timer?fixedRate=true&amp;period={{config.timeout}}&amp;repeatCount={{config.numSamples}}"/> <camel:to uri="log:hello.world.request?level=INFO&amp;showAll=true" /> <camel:bean ref="helloWorld" />  <camel:marshal ref ="jack"/> <camel:convertBodyTo type="java.lang.String" /> <camel:log message="${body}"/>  <camel:log message="Returned Random Sensor Event in JSON"/>  <camel:log message="printing values read from config.properties file"/> <camel:log message=" config.timeout= {{config.timeout}} milliseconds"/> <camel:log message=" config.numSamples= {{config.numSamples}} random Sensor Event(s) ## NOTE: 0 or -1 means generate forever ##"/> <camel:log message=" config.defaultViz= {{config.defaultViz}}"/>  <camel:to uri="log:hello.world.response?level=INFO&amp;showAll=true" />   </camel:route> </camel:camelContext>  <util:properties id="sensorProperties" location="classpath:/sensor.properties"/>  <bean class="com.data.world2.sensor.SensorEventStore"> <property name="sourceProperties" ref="sensorProperties" /> <property name="defaultViz" value="${config.defaultViz}"/> </bean>  <util:properties id="admissionProperties" location="classpath:/admission.properties"/>  <bean class="com.data.world2.admission.AdmissionEventStore"> <property name="sourceAdmissionProperties" ref="admissionProperties" /> <property name="defaultViz" value="${config.defaultViz}"/> </bean> <bean id="properties" class="org.apache.camel.component.properties.PropertiesComponent"> <property name="locations"> <list> <value>classpath:config.properties</value> <value>classpath:publish.properties</value> <value>classpath:admission.properties</value> </list> </property> </bean>   <bean id="bridgePropertyPlaceholder" class="org.apache.camel.spring.spi.BridgePropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:config.properties</value> <value>classpath:publish.properties</value> <value>classpath:admission.properties</value> </list> </property> </bean>  <bean class="com.data.world2.RandomEventGenerator"> <property name="makePub" value="${publish.makePub}"/> <property name="modelPub" value="${publish.modelPub}"/> <property name="serialNumberPub" value="${publish.serialNumberPub}"/> <property name="firmwareRevPub" value="${publish.firmwareRevPub}"/> <property name="sensorTypePub" value="${publish.sensorTypePub}"/> <property name="payloadPub" value="${publish.payloadPub}"/> </bean>                       </beans> </code></pre> <h1>Final Fix</h1> <p>The final issue was that I didn't have a separate @Autowired to inject both classes. Once I changed the code from this:</p> <pre><code> @Autowired SensorEventStore sensorEventStore; AdmissionEventStore admissionEventStore; </code></pre> <p>to this:</p> <pre><code> @Autowired SensorEventStore sensorEventStore; @Autowired AdmissionEventStore admissionEventStore; </code></pre> <p>everything injected properly. </p>
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Loading multiple properties files with Camel
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1. COWhy the down vote? Because I hadn't figured out the issue until late yesterday?
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