Spring JPA Repository - jsonObject 上的运算符SIMPLE_PROPERTY需要一个标量参数

我正在用JPA查询更新一些Spring Boot应用程序。一切正常,除了一种特定类型的查询()。这在早期版本中工作正常,但是在我升级后,我的bean无法创建。findByJsonNode

它工作正常到Spring Boot和Spring Cloud版本,但是当我升级到Spring Boot和Spring Cloud版本时,Spring无法创建我的存储库Bean。2.1.4.RELEASEGreenwich.SR12.2.4.RELEASEHoxton.RELEASE

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

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

    Search findFirstBySearchDto(JsonNode searchDto);

}

实体

/**
 * Entity for saving as search
 *
 * Users can save searches and every search will be stored in history for reference
 */
@Slf4j
@Data
@Entity(name = "search")
@Table(name = "tt_searches", indexes = {
        @Index(columnList = "searchDto", name = "searchdto_hidx")
})
@TypeDef(
        name = "json-node",
        typeClass = JsonNodeStringType.class
)
@EqualsAndHashCode(exclude = { "id", "savedSearches", "searchHistory" })
public class Search {

    public static final ObjectMapper OBJECT_MAPPER = new ObjectMapper().findAndRegisterModules();

    public Search() {
    }

    public Search(SearchDto searchDto, List<SavedSearch> savedSearches, List<SearchHistory> searchHistory) {
        this.searchDto = OBJECT_MAPPER.valueToTree(searchDto);
        this.savedSearches = savedSearches;
        this.searchHistory = searchHistory;
    }

    public Search(JsonNode searchDto, List<SavedSearch> savedSearches, List<SearchHistory> searchHistory) {
        this.searchDto = searchDto;
        this.savedSearches = savedSearches;
        this.searchHistory = searchHistory;
    }

    @Id
    @Column(columnDefinition = "CHAR(36)")
    @GeneratedValue(generator = "uuid")
    @GenericGenerator(name = "uuid", strategy = "uuid2")
    private String id;

    @Type(type = "json-node")
    @Column(columnDefinition = "VARCHAR(2000)", unique = true)
    private JsonNode searchDto;

    @OneToMany(mappedBy = "search", fetch = FetchType.LAZY)
    @OrderBy("name DESC")
    @JsonIgnore
    private List<SavedSearch> savedSearches;

    @OneToMany(mappedBy = "search", fetch = FetchType.LAZY)
    @OrderBy("timestamp DESC")
    @JsonIgnore
    private List<SearchHistory> searchHistory;

    public SearchDto getSearchDto() {
        try {
            return OBJECT_MAPPER.treeToValue(searchDto, SearchDto.class);
        } catch (JsonProcessingException e) {
            log.error("Could not convert JsonNode to SearchDto when retrieving data from entity: {}", this.id);
            return null;
        }
    }

    public void setSearchDto(SearchDto searchDto) {
        this.searchDto = OBJECT_MAPPER.valueToTree(searchDto);
    }
}

答案 1

我遇到了同样的问题。我通过更改方法的名称来解决此问题,方法是在方法的末尾添加“In”。

以你为例,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


答案 2

如果您正在使用存储库并尝试基于一种 Set 类型的参数获取列表,则在编写查询时应小心!在我的情况下:

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

致用户:8569305(smythie)!


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