使用 spring-boot 1.5.20 时，出异常，项目无法启动

[guicw]

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APPLICATION FAILED TO START

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Description:

An attempt was made to call the method org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy.create(Ljavax/persistence/EntityManager;Lorg/springframework/data/repository/query/QueryLookupStrategy$Key;Lorg/springframework/data/jpa/provider/QueryExtractor;Lorg/springframework/data/repository/query/EvaluationContextProvider;)Lorg/springframework/data/repository/query/QueryLookupStrategy; but it does not exist. Its class, org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy, is available from the following locations:

jar:file:/D:/maven_repo/org/springframework/data/spring-data-jpa/1.11.20.RELEASE/spring-data-jpa-1.11.20.RELEASE.jar!/org/springframework/data/jpa/repository/query/JpaQueryLookupStrategy.class

It was loaded from the following location:

file:/D:/maven_repo/org/springframework/data/spring-data-jpa/1.11.20.RELEASE/spring-data-jpa-1.11.20.RELEASE.jar

Action:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy

**项目中spring-boot用的1.5.20 spring-data-jpa-extra版本中2.1.1，2.1.2，2.1.21这些都试过。无法启动，上面是异常信息。 后面将项目中spring-boot降低了一个版本，才成功。 如下：

org.springframework.boot spring-boot-starter-parent 1.5.19.RELEASE

但这只是临时之举，能否修正呢？**

[stormning]

版本兼容性是个头疼的问题，后面看看能否修改到尽量少侵入spring源码，因为之前的版本，spring预留的扩展空间比较小