Spring JPA 存储库 - jsonObject 上的运算符 SIMPLE_PROPERTY 需要标量参数

Question

我正在使用 JPA 查询更新一些 Spring Boot 应用程序。除了一种特定类型的查询 ( findByJsonNode)之外，一切正常。这在早期版本中运行良好，但在我升级后，我的 bean 无法创建。

它在 Spring Boot2.1.4.RELEASE和 spring cloud version 上运行良好Greenwich.SR1，但是当我升级到 Spring Boot2.2.4.RELEASE和 spring cloud version 时Hoxton.RELEASE，Spring 无法创建我的存储库 bean。

Caused by: java.lang.IllegalStateException: Operator SIMPLE_PROPERTY on searchDto requires a scalar argument, found class com.fasterxml.jackson.databind.JsonNode in method public abstract se.company.search.Search se.company.search.SearchRepository.findFirstBySearchDto(com.fasterxml.jackson.databind.JsonNode).
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.throwExceptionOnArgumentMismatch(PartTreeJpaQuery.java:171)
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.validate(PartTreeJpaQuery.java:147)
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:90)
    ... 73 common frames omitted.
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.throwExceptionOnArgumentMismatch(PartTreeJpaQuery.java:171) ~[spring-data-jpa-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.validate(PartTreeJpaQuery.java:147) ~[spring-data-jpa-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:90) ~[spring-data-jpa-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    ... 74 common frames omitted

存储库类如下所示

Caused by: java.lang.IllegalStateException: Operator SIMPLE_PROPERTY on searchDto requires a scalar argument, found class com.fasterxml.jackson.databind.JsonNode in method public abstract se.company.search.Search se.company.search.SearchRepository.findFirstBySearchDto(com.fasterxml.jackson.databind.JsonNode).
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.throwExceptionOnArgumentMismatch(PartTreeJpaQuery.java:171)
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.validate(PartTreeJpaQuery.java:147)
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:90)
    ... 73 common frames omitted.
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.throwExceptionOnArgumentMismatch(PartTreeJpaQuery.java:171) ~[spring-data-jpa-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.validate(PartTreeJpaQuery.java:147) ~[spring-data-jpa-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    at org.springframework.data.jpa.repository.query.PartTreeJpaQuery.<init>(PartTreeJpaQuery.java:90) ~[spring-data-jpa-2.2.4.RELEASE.jar:2.2.4.RELEASE]
    ... 74 common frames omitted

实体

@Repository
public interface SearchRepository extends PagingAndSortingRepository<Search, String> {

    Search findFirstBySearchDto(JsonNode searchDto);

}

Answer 1

我遇到了同样的问题。我通过在它的末尾添加“In”来更改我的方法的名称来解决它。

对于您的示例，它将是

findAllByTagsIn(java.util.Set)

请参阅此处的“方法名称中支持的关键字”表：https : //docs.spring.io/spring-data/jpa/docs/current/reference/html/#jpa.query-methods.query-creation

Answer 2

当您使用列值列表作为谓词搜索实体时，必须在列名称末尾使用“In”子句。你可以使用无误

List<Entity> findAllByEntityColumnIn(Iterable<Long> EntityColumns);

注意：它在我的项目上经过 100% 测试。

Answer 3

如果您正在使用存储库并尝试根据 Set 类型的参数获取列表，则在编写查询时应该小心！就我而言：

findAllBySchoolId(Set<Long> schoolIds) // wrong
findAllBySchoolIdIn(Set<Long> schoolIds) // correct

致谢用户：8569305(smythie)！