Jar not found error while while trying to deploy SCDF Stream

问题

I registered the sink first as follows:

app register --name mysink --type sink --uri file:///Users/swatikaushik/Downloads/kafkaStreamDemo/target/kafkaStreamDemo-0.0.1-SNAPSHOT.jar

Then I created a stream

stream create --definition “:myKafkaTopic > mysink" --name myStreamName --deploy

I got the error

Command failed org.springframework.cloud.dataflow.rest.client.DataFlowClientException: File 
/Users/swatikaushik/Downloads/kafkaStreamDemo/target/kafkaStreamDemo-0.0.1-SNAPSHOT.jar must exist

While the jar exists!!

回答1:

File permission is one thing - please double check as advised.

A few other ideas:

1) Run app info sink:mysink. If the JAR is actually available, it should return with a list of Boot/Whitelisted properties of the Application.

2) Run the Jar standalone. Make sure it actually starts via java -jar.....

3) The stream definition appear to include a special character (“:myKafkaTopic > mysink" instead of ":myKafkaTopic > mysink" - notice the “ character); it would fail in the Shell, but it looks like you were able to deploy it. A full stacktrace would help.

来源：https://stackoverflow.com/questions/49935235/jar-not-found-error-while-while-trying-to-deploy-scdf-stream