java - Spring data mongodb repository findAll字段排除

Question

我有一个关于 spring data mongodb 存储库的奇怪问题。我想从我的 findAll 请求中排除一个字段。我怎样才能做到这一点？

这非常有效:

@Query(fields = "{'objectContentAsJson':0}")
Page<ObjectHistory> findByObjectIdAndServiceIgnoreCase( String objectId, String service, Pageable pageable );

但是 findAll 没有机会:

@Query(fields = "{'objectContentAsJson':0}")
Page<ObjectHistory> findAll( Pageable pageable );

抛出:

Caused by: org.springframework.data.mapping.PropertyReferenceException: No property findAll found for type ObjectHistory! at org.springframework.data.mapping.PropertyPath.(PropertyPath.java:75) at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:327) at org.springframework.data.mapping.PropertyPath.create(PropertyPath.java:307) at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:270) at org.springframework.data.mapping.PropertyPath.from(PropertyPath.java:241) at org.springframework.data.repository.query.parser.Part.(Part.java:76)

Answer 1

添加一个空的过滤条件将为您解决问题:

@Query(value = "{}", fields = "{'objectContentAsJson':0}")
Page<ObjectHistory> findAll(Pageable pageable);

显然，当您没有指定value 参数来过滤结果时，Spring Data 会尝试从方法名称派生查询，但不知何故，无法识别findAll< 的特殊含义.