Question

当我在select查询中传递多个对象时，@ Query返回错误。

错误 - 查询方法public abstract java.util.List

时验证失败

POJO的

 @Entity
@Table(name = "SUBJECT")
public class Subject {

    private long id;
    private Long fkCode;
    private Long fkData;
    private Date assignedDate;
    private Data data;
    private Code code;

    //setters getters  


    @OneToOne
    @JoinColumn(name="fkCode",insertable=false, updatable=false)
    public Code getCode() {
        return code;
    }

    @OneToOne
    @JoinColumn(name="fkData",insertable=false, updatable=false)
    public Data getData() {
        return data;
    }
    public Subject(long id, Long fkEquipment, Long fkCode,Date assignedDate, Long fkData,Data data,Code code) {
        super();
        this.id = id;
        this.fkCode = fkCode;
        this.fkData = fkData;
        this.assignedDate = assignedDate;
        this.data = data;
        this.code=code;
        }

在我的资料库中

@Query(" select new Subject(id, fkCode, fkData, assignedDate, data, code)"
                + " from Subject a where trunc(a.assignedDate) = TO_DATE(?1, 'yyyy-mm-dd')  "
                + " order by a.id desc")
        List<Subject> findByAssignedDate(String assignedDate);

这是错误

引起：java.lang.IllegalArgumentException：验证失败查询方法public abstract java.util.List com.dei.repositories.SubjectRepository.findByAssignedDate（java.lang.String中）！在 org.springframework.data.jpa.repository.query.SimpleJpaQuery.validateQuery（SimpleJpaQuery.java:92）在 org.springframework.data.jpa.repository.query.SimpleJpaQuery。（SimpleJpaQuery.java:62）在 org.springframework.data.jpa.repository.query.JpaQueryFactory.fromMethodWithQueryString（JpaQueryFactory.java:72）在 org.springframework.data.jpa.repository.query.JpaQueryFactory.fromQueryAnnotation（JpaQueryFactory.java:53）在 org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy $ DeclaredQueryLookupStrategy.resolveQuery（JpaQueryLookupStrategy.java:141）在 org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy $ CreateIfNotFoundQueryLookupStrategy.resolveQuery（JpaQueryLookupStrategy.java:209）在 org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy $ AbstractQueryLookupStrategy.resolveQuery（JpaQueryLookupStrategy.java:74）在 org.springframework.data.repository.core.support.RepositoryFactorySupport $ QueryExecutorMethodInterceptor。（RepositoryFactorySupport.java:416）在 org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository（RepositoryFactorySupport.java:206）在 org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.initAndReturn（RepositoryFactoryBeanSupport.java:251）在 org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.afterPropertiesSet（RepositoryFactoryBeanSupport.java:237）在 org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean.afterPropertiesSet（JpaRepositoryFactoryBean.java:92）在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods（AbstractAutowireCapableBeanFactory.java:1637）在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean（AbstractAutowireCapableBeanFactory.java:1574） ...省略了66个常见帧引起的： java.lang.NullPointerException：null at org.hibernate.internal.util.ReflectHelper.getConstructor（ReflectHelper.java:354）在 org.hibernate.hql.internal.ast.tree.ConstructorNode.resolveConstructor（ConstructorNode.java:186）在 org.hibernate.hql.internal.ast.tree.ConstructorNode.prepare（ConstructorNode.java:159）在 org.hibernate.hql.internal.ast.HqlSqlWalker.processConstructor（HqlSqlWalker.java:1109）在 org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectExpr（HqlSqlBaseWalker.java:2328）在 org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectExprList（HqlSqlBaseWalker.java:2194）在 org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectClause（HqlSqlBaseWalker.java:1476）在 org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query（HqlSqlBaseWalker.java:573）在 org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement（HqlSqlBaseWalker.java:301）在 org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement（HqlSqlBaseWalker.java:249）在 org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze（QueryTranslatorImpl.java:278）在 org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile（QueryTranslatorImpl.java:206）在 org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile（QueryTranslatorImpl.java:158）在 org.hibernate.engine.query.spi.HQLQueryPlan。（HQLQueryPlan.java:131）在 org.hibernate.engine.query.spi.HQLQueryPlan。（HQLQueryPlan.java:93）在 org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan（QueryPlanCache.java:167）在 org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan（AbstractSessionImpl.java:301）在 org.hibernate.internal.AbstractSessionImpl.createQuery（AbstractSessionImpl.java:236）在 org.hibernate.internal.SessionImpl.createQuery（SessionImpl.java:1836）在 org.hibernate.jpa.spi.AbstractEntityManagerImpl.createQuery（AbstractEntityManagerImpl.java:328） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method）at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57）在 sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:601）at org.springframework.orm.jpa.ExtendedEntityManagerCreator $ ExtendedEntityManagerInvocationHandler.invoke（ExtendedEntityManagerCreator.java:344）在com.sun.proxy。$ Proxy75.createQuery（未知来源）at org.springframework.data.jpa.repository.query.SimpleJpaQuery.validateQuery（SimpleJpaQuery.java:86） ...省略了79个常见帧

如果我从查询中删除代码或数据，它就可以工作..

@Query（＆＃34;选择新主题（id，fkCode，fkData，assignedDate，数据）＆＃34; - 正常工作

@Query（＆＃34;选择新主题（id，fkCode，fkData，assignedDate，代码）＆＃34; - 正常工作

@Query（＆＃34;选择新主题（id，fkCode，fkData，assignedDate，数据，代码）＆＃34; 无法正常工作

不合作。需要帮助/建议

@Query不能在jpa中使用多个对象，错误 - 对于方法public abstract java.util.List

0 个答案: