Add hint to resolve missing hint from Spring Batch

This can be remove when spring-projects/spring-batch#4248 is resolved

Author: cppwfs

spring-cloud-task-samples/batch-job/src/main/java/io/spring/configuration/JobConfiguration.java

@@ -19,6 +19,11 @@
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 
+import org.springframework.aop.SpringProxy;
+import org.springframework.aop.framework.Advised;
+import org.springframework.aot.hint.RuntimeHints;
+import org.springframework.aot.hint.RuntimeHintsRegistrar;
+import org.springframework.aot.hint.TypeReference;
 import org.springframework.batch.core.Job;
 import org.springframework.batch.core.StepContribution;
 import org.springframework.batch.core.job.builder.JobBuilder;
@@ -30,12 +35,15 @@
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportRuntimeHints;
+import org.springframework.core.DecoratingProxy;
 import org.springframework.transaction.PlatformTransactionManager;
 
 /**
  * @author Michael Minella
  */
 @Configuration(proxyBeanMethods = false)
+@ImportRuntimeHints(JobConfiguration.RuntimeHint.class)
 public class JobConfiguration {
 
 	private static final Log logger = LogFactory.getLog(JobConfiguration.class);
@@ -59,4 +67,14 @@ public RepeatStatus execute(StepContribution contribution, ChunkContext chunkCon
 				}, transactionManager).build()).build();
 	}
 
+	static class RuntimeHint implements RuntimeHintsRegistrar {
+		@Override
+		public void registerHints(RuntimeHints hints, ClassLoader classLoader) {
+			hints.proxies().registerJdkProxy(builder -> builder
+				.proxiedInterfaces(TypeReference.of("org.springframework.batch.core.launch.JobOperator"))
+				.proxiedInterfaces(SpringProxy.class, Advised.class, DecoratingProxy.class));
+		}
+
+	}
+
 }