我正在测试Apache Flink和Spring Boot之间的集成，可以在IDE上运行它们，但是当我尝试在Apache Flink

Cluster上运行时，我遇到了一个与ClassLoader相关的异常。

这些类非常简单：

BootFlinkApplication

@SpringBootApplication

@ComponentScan("com.example.demo")

public class BootFlinkApplication {

public static void main(String[] args) {

System.out.println("some test");

SpringApplication.run(BootFlinkApplication.class, args);

}

}

FlinkTest

@Service

public class FlinkTest {

@PostConstruct

public void init() {

StreamExecutionEnvironment see = StreamExecutionEnvironment.getExecutionEnvironment();

see.fromElements(1, 2, 3, 4)

.filter(new RemoveNumber3Filter()).print();

try {

see.execute();

} catch (Exception e) {

System.out.println("Error executing flink job: " + e.getMessage());

}

}

}

RemoveNumber3Filter

public class RemoveNumber3Filter implements FilterFunction {

@Override

public boolean filter(Integer i) throws Exception {

return i != 3;

}

}

例外：

Caused by: org.apache.flink.runtime.client.JobExecutionException: Job execution failed.

at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply$mcV$sp(JobManager.scala:897)

at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:840)

at org.apache.flink.runtime.jobmanager.JobManager$$anonfun$handleMessage$1$$anonfun$applyOrElse$6.apply(JobManager.scala:840)

at scala.concurrent.impl.Future$PromiseCompletingRunnable.liftedTree1$1(Future.scala:24)

at scala.concurrent.impl.Future$PromiseCompletingRunnable.run(Future.scala:24)

at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:39)

at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:415)

at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)

at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)

at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)

at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)

Caused by: org.apache.flink.streaming.runtime.tasks.StreamTaskException: Cannot load user class: com.example.demo.RemoveNumber3Filter

ClassLoader info: URL ClassLoader:

file: '/tmp/blobStore-850f3189-807e-4f8d-a8a6-3bd3c1bd76b4/job_eb93b239080b4d4e09f10f1e3605744d/blob_p-5fd56f3348976c0d333d680fde4a79573c21cd40-48ac0995eee11f38ce3ff4f890102af8' (valid JAR)

Class not resolvable through given classloader.

at org.apache.flink.streaming.api.graph.StreamConfig.getStreamOperator(StreamConfig.java:232)

at org.apache.flink.streaming.runtime.tasks.OperatorChain.createChainedOperator(OperatorChain.java:355)

at org.apache.flink.streaming.runtime.tasks.OperatorChain.createOutputCollector(OperatorChain.java:282)

at org.apache.flink.streaming.runtime.tasks.OperatorChain.(OperatorChain.java:126)

at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:231)

at org.apache.flink.runtime.taskmanager.Task.run(Task.java:718)

at java.lang.Thread.run(Thread.java:748)