org.hibernate.HibernateException: 命名查询中的错误: customers.amountDeposit
这个错误通常是由于Hibernate在解析命名查询时找不到指定的属性或字段引起的。具体来说,可能是以下几种情况之一:
customers
实体类中是否存在amountDeposit
属性。hbm.xml
)或注解配置是否正确。确保customers
实体类中存在amountDeposit
属性,并且拼写正确。例如:
@Entity
@Table(name = "customers")
public class Customer {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String name;
private Double amountDeposit;
// Getters and setters
}
如果你使用的是XML映射文件,确保文件中正确配置了命名查询。例如:
<hibernate-mapping>
<class name="com.example.Customer" table="customers">
<id name="id" column="id">
<generator class="identity"/>
</id>
<property name="name" column="name"/>
<property name="amountDeposit" column="amount_deposit"/>
</class>
<query name="customers.amountDeposit">
<![CDATA[
FROM Customer WHERE amountDeposit > :amount
]]>
</query>
</hibernate-mapping>
如果你使用的是注解配置,确保注解正确。例如:
@Entity
@Table(name = "customers")
@NamedNativeQuery(
name = "customers.amountDeposit",
query = "SELECT * FROM customers WHERE amount_deposit > :amount",
resultClass = Customer.class
)
public class Customer {
// ...
}
确保数据库表customers
中存在amount_deposit
字段。例如,在MySQL中:
CREATE TABLE customers (
id BIGINT AUTO_INCREMENT PRIMARY KEY,
name VARCHAR(255),
amount_deposit DOUBLE
);
以下是一个完整的示例,展示了如何正确配置实体类和命名查询:
@Entity
@Table(name = "customers")
@NamedNativeQuery(
name = "customers.amountDeposit",
query = "SELECT * FROM customers WHERE amount_deposit > :amount",
resultClass = Customer.class
)
public class Customer {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String name;
private Double amountDeposit;
// Getters and setters
}
Session session = sessionFactory.openSession();
Transaction tx = session.beginTransaction();
List<Customer> customers = session.getNamedQuery("customers.amountDeposit")
.setParameter("amount", 100.0)
.list();
tx.commit();
session.close();
通过以上步骤,你应该能够解决org.hibernate.HibernateException: 命名查询中的错误: customers.amountDeposit
这个问题。
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