Spring数据mongodb存储库findAll字段排除

Question

I have a strange issue for the spring data mongodb repositories.. I want to exclude a field from my findAll request. How can I achieve this ?

This works perfectly:

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

But no chance for findAll :

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

This throws:

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

Adding an empty filter criteria will do the trick for you:

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

Apparently, when you do not specify the value parameter to filter results, Spring Data tries to derive a query from the method name and somehow, does not recognize the special meaning of findAll .

Answer 2

Since you are not providing a value field to your @Query annotation, Spring will try to convert the method name findAll to a query which is not respecting the Query Creation Specification from Spring. Please look a the Specs here .

This should work for you :

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