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问题:通过扩展ReactiveCrudRepository来尝试弹簧网以及弹簧数据.我收到以下错误:

Caused by: org.springframework.data.mapping.PropertyReferenceException: No property delete found for type Product!
        at org.springframework.data.mapping.PropertyPath.lambda$new$0(PropertyPath.java:82) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at java.util.Optional.orElseThrow(Optional.java:290) ~[na:1.8.0_101]
        at org.springframework.data.mapping.PropertyPath.<init>(PropertyPath.java:82) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:304) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:284) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:243) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:211) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at org.springframework.data.repository.query.parser.Part.<init>(Part.java:81) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at org.springframework.data.repository.query.parser.PartTree$OrPart.lambda$new$0(PartTree.java:239) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_101]
        at java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175) ~[na:1.8.0_101]
        at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:1.8.0_101]
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[na:1.8.0_101]
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:471) ~[na:1.8.0_101]
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:708) ~[na:1.8.0_101]
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[na:1.8.0_101]
        at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:499) ~[na:1.8.0_101]
        at org.springframework.data.repository.query.parser.PartTree$OrPart.<init>(PartTree.java:240) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at org.springframework.data.repository.query.parser.PartTree$Predicate.lambda$new$0(PartTree.java:368) ~[spring-data-commons-2.0.0.BUILD-SNAPSHOT.jar:na]
        at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:193) ~[na:1.8.0_101]
        at java.util.Spliterators$ArraySpliterator.forEachRemaining(Spliterators.java:948) ~[na:1.8.0_101]
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:481) ~[na:1.8.0_101] …