【发布时间】:2020-06-09 08:08:53
【问题描述】:
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) 外,一切正常。这在早期版本中运行良好,但升级后无法创建 bean。
在 Spring Boot 2.1.4.RELEASE 和 Spring Cloud 版本 Greenwich.SR1 之前它运行良好,但是当我升级到 Spring Boot 2.2.4.RELEASE 和 Spring Cloud 版本 Hoxton.RELEASE 时,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
@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);
}
}
【问题讨论】:
-
我现在在尝试更新时在另一个应用程序中遇到了同样的错误,但现在在
java.util.Set作为 JPA 查询的帮助下找到时,就像这样findAllByTags(java.util.Set) -
不确定,但您尝试过使用
findByTagsIn吗?您可能已经看到了这一点。 jira.spring.io/browse/DATAJPA-1182 添加了一个验证来检查收集的方法签名。还有一个关于自定义集合转换器问题的错误报告。 jira.spring.io/browse/DATAJPA-1682 -
只是为了澄清,问题表明您正在将集合或多个值传递给需要单个值的参数。这可能有助于调试,谢谢
标签: java spring-boot jpa spring-data-jpa hibernate-types