Hello,
I used ActiveMQ to send JSON Strings form a publisher to a subscriber via
Topic "iCASA".
Eventhough the message is published and also received by the subscriber,
theres an error message showing up I do not undertsand. I tired to google
the problem but without any concrete hints. This error message is showing up
every time a message is received:
PM org.apache.activemq.ActiveMQMessageConsumer dispatch
SCHWERWIEGEND: ID:LAPTOP-65SHJU9S-56930-1508417075291-0:1:1:1 Exception
while processing message: java.lang.RuntimeException: Failed to invoke
public org.apache.activemq.command.ActiveMQDestination() with no args
java.lang.RuntimeException: Failed to invoke public
org.apache.activemq.command.ActiveMQDestination() with no args
at
com.google.gson.internal.ConstructorConstructor$3.construct(ConstructorConstructor.java:111)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:206)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.read(ReflectiveTypeAdapterFactory.java:116)
at
com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:216)
at com.google.gson.Gson.fromJson(Gson.java:879)
at com.google.gson.Gson.fromJson(Gson.java:844)
at com.google.gson.Gson.fromJson(Gson.java:793)
at com.google.gson.Gson.fromJson(Gson.java:765)
at
de.mannheim.wifo2.fesas.sasStructure.data.adaptationLogic.knowledge.KnowledgeRecord.getData(KnowledgeRecord.java:61)
at logicElements.monitor.Monitor.callLogic(Monitor.java:130)
at logicElements.monitor.Monitor$3.onMessage(Monitor.java:211)
at
org.apache.activemq.ActiveMQMessageConsumer.dispatch(ActiveMQMessageConsumer.java:967)
at
org.apache.activemq.ActiveMQSessionExecutor.dispatch(ActiveMQSessionExecutor.java:122)
at
org.apache.activemq.ActiveMQSessionExecutor.iterate(ActiveMQSessionExecutor.java:192)
at
org.apache.activemq.thread.PooledTaskRunner.runTask(PooledTaskRunner.java:122)
at
org.apache.activemq.thread.PooledTaskRunner$1.run(PooledTaskRunner.java:43)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.InstantiationException
at
sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:48)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at
com.google.gson.internal.ConstructorConstructor$3.construct(ConstructorConstructor.java:108)
... 18 more
The String das is sent is similar to this:
{"Tulips_1":{"Zone":"Tulips","PresenceSensor":false,"Thermometer":289,"Illuminance":1146,"CO2-Level":400,"CO-Level":440,"FloodSensor":true},"Roses_1":{"Zone":"Roses","PresenceSensor":true,"Thermometer":290,"Illuminance":214,"CO2-Level":300,"CO-Level":430,"FloodSensor":true}}
Do somebody know what the error means?
Best regards,
Julian
--
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