在Spring Boot 2.0.0之后，“得到了不同大小的元组和别名”异常。发布迁移

Question

//imports, etc.

@Entity
@Table(name = "TSTRANS")
@SqlResultSetMappings(
        {                   
                @SqlResultSetMapping(name = TS_TRANS_EMP_STAT,
                        classes = {
                                @ConstructorResult(
                                        targetClass = EmpStat.class,
                                        columns = {
                                                @ColumnResult(name = "EMPID", type = Long.class),
                                                @ColumnResult(name = "CODE", type = String.class),
                                                @ColumnResult(name = "TOTALCOUNT", type = Integer.class)
                                        }
                                )
                        })
        }
)
@NamedNativeQueries({
        @NamedNativeQuery(name = "TsTrans.getStat", query = "select * from SP_TASK_STATS_EMP  (:in_empid, :in_gidstr, :in_onlytodo)", resultSetMapping = TS_TRANS_EMP_STAT)
})
public class TsTrans extends TsTransCommon {
    public static final String TSTRANS_BADGE = "TSTRANS_BADGE";

    private static final long serialVersionUID = -3391028108003625153L;
    public static final String TS_TRANS_EMP_STAT = "TsTrans.empStat";
    public static final String TS_TRANS_SCHEDULE_STAT = "TsTrans.getScheduleStat";
    public static final String TS_TRANS_FOLLOWUP = "TS_TRANS_FOLLOWUP";
}

这就是实体。

// imports, etc.

public class EmpStat extends BaseStat {

    private static final long serialVersionUID = -4410895509438727581L;
    private Long mEmpid;

    public EmpStat(Long aEmpid, String aCode, Integer aTotalcount) {
        super(aCode, aTotalcount);
        mEmpid = aEmpid;
    }

    public Long getEmpid() {
        return mEmpid;
    }

    public void setEmpid(Long aEmpid) {
        mEmpid = aEmpid;
    }
}

这是非实体pojo，namedQuery返回类型。

// imports, etc.

@Repository
public interface TsTransRepository extends TsTransCommonRepository<TsTrans> {
    List<EmpStat> getStat(@Param("in_empid") Long aEmpid, @Param("in_gidstr") String aGidstr, @Param("in_onlytodo") Boolean aOnlytodo);

}

这是repository类。

我使用这个namednativeQuery从存储过程返回非实体pojos。自Spring Boot 1.5.9以来，它一直无一例外地工作。在Spring Boot 2.0.0上。M7。迁移到2.0.0后。RELEASE，开始出现以下异常。

org.hibernate.HibernateException: Got different size of tuples and aliases
    at org.hibernate.jpa.spi.NativeQueryTupleTransformer$NativeTupleImpl.<init>(NativeQueryTupleTransformer.java:68) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.jpa.spi.NativeQueryTupleTransformer.transformTuple(NativeQueryTupleTransformer.java:28) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.hql.internal.HolderInstantiator.instantiate(HolderInstantiator.java:85) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.loader.custom.CustomLoader.getResultList(CustomLoader.java:430) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2507) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.loader.Loader.list(Loader.java:2502) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:335) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.internal.SessionImpl.listCustomQuery(SessionImpl.java:2161) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.internal.AbstractSharedSessionContract.list(AbstractSharedSessionContract.java:1016) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.query.internal.NativeQueryImpl.doList(NativeQueryImpl.java:152) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1414) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.hibernate.query.Query.getResultList(Query.java:146) ~[hibernate-core-5.2.14.Final.jar:5.2.14.Final]
    at org.springframework.data.jpa.repository.query.JpaQueryExecution$CollectionExecution.doExecute(JpaQueryExecution.java:129) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
    at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:91) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
    at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:136) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
    at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:125) ~[spring-data-jpa-2.0.5.RELEASE.jar:2.0.5.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:590) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:578) ~[spring-data-commons-2.0.5.RELEASE.jar:2.0.5.RELEASE]

迁移期间我错过了什么吗？

Answer 1

将您的SqlResultSetMappings更改为

@SqlResultSetMappings({
    @SqlResultSetMapping(name = TS_TRANS_EMP_STAT,
        columns = {
            @ColumnResult(name = "EMPID", type = Long.class),
            @ColumnResult(name = "CODE", type = String.class),
            @ColumnResult(name = "TOTALCOUNT", type = Integer.class)
        })
}

并将EmpStat从普通类更改为接口：

public interface EmpStat {
    Long getEMPID();
    String getCODE();
    Integer getTOTALCOUNT();
}

Answer 2

这是一个错误，现在修复了：jira.spring.io/browse/DATAJPA-1280

加上：

@Query(nativeQuery=true) 

存储库中新方法的顶部。

Answer 3

在JPA2.1中，将@Query（nativeQuery=true）注释放在存储库接口方法上，修复了这个问题。参考：

https://github.com/spring-projects/spring-data-examples/tree/master/jpa/jpa21#support-for-custom-sqlresultsetmapping-with-constructorresult