Spring数据JPA本机查询结果绑定

实体类：

@Entity
@SqlResultSetMapping(
    name="hourMapping",
    classes=@ConstructorResult(
            targetClass=Representation.class,
            columns={
                    @ColumnResult(name="hour", type=BigDecimal.class),
                    @ColumnResult(name="transactions", type=BigDecimal.class)
            }
            )
    )

@NamedNativeQuery(name="MyEntity.reportByHour", query="SELECT hour,SUM(tran_per_hour) AS transactions FROM MY_ENTITY GROUP BY hour ORDER BY hour"
    ,resultSetMapping="hourMapping")

@Table(name="MY_ENTITY")
public class MyEntity implements Serializable {

@Data //Lombok
@JsonAutoDetect(fieldVisibility = Visibility.ANY)
public class Representation {

public Representation(BigDecimal hour, BigDecimal transactions) {
    this.hour = hour;
    this.transactions = transactions;
}

private BigDecimal hour;
private BigDecimal transactions;

Pojo类：

@Entity
@SqlResultSetMapping(
    name="hourMapping",
    classes=@ConstructorResult(
            targetClass=Representation.class,
            columns={
                    @ColumnResult(name="hour", type=BigDecimal.class),
                    @ColumnResult(name="transactions", type=BigDecimal.class)
            }
            )
    )

@NamedNativeQuery(name="MyEntity.reportByHour", query="SELECT hour,SUM(tran_per_hour) AS transactions FROM MY_ENTITY GROUP BY hour ORDER BY hour"
    ,resultSetMapping="hourMapping")

@Table(name="MY_ENTITY")
public class MyEntity implements Serializable {

@Data //Lombok
@JsonAutoDetect(fieldVisibility = Visibility.ANY)
public class Representation {

public Representation(BigDecimal hour, BigDecimal transactions) {
    this.hour = hour;
    this.transactions = transactions;
}

private BigDecimal hour;
private BigDecimal transactions;

存储库接口：

public interface MyEntityRepository extends JpaRepository<MyEntity, MyEntityPK> {
    List<Representation> reportByHour();
}

公共接口MyEntityRepository扩展了JpaRepository{
List reportByHour（）；
}

当我运行调用本机查询的端点时，我得到异常：

无法将值“{0，198}”的类型[java.lang.Object[]转换为类型[com.representation.representation]；嵌套异常为org.springframework.core.convert.ConverterNotFoundException:未找到能够从类型[java.math.BigDecimal]转换为类型[com.representation.representation]的转换器

现在，如果我从本机查询返回“hour”字段（以及对POJO构造函数的相关更改等），它就可以正常工作了

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感谢您的帮助。

好的，虚惊一场。我的hibernate依赖项都混乱不堪，导致冲突，因此导致上述异常

解决了这些依赖性问题后，效果非常好

---

长话短说：让spring引导-*处理大多数hibernate依赖项，而不是覆盖或管理自己的依赖项。

好的，假警报。我的hibernate依赖项都混乱不堪，导致冲突，因此导致上述异常

解决了这些依赖性问题后，效果非常好

长话短说：让SpringBoot-*处理大多数hibernate依赖项，而不是重写或管理您自己的依赖项