Java Hibernate异常：ClassCastException和QueryException

我想要的是一个客户可以访问其个人资料页面的页面。他需要点击的锚如下所示：

<a href="${pageContext.request.contextPath}/customer/profile/${pageContext.request.userPrincipal.name}"></a>

接下来我有一个用户模型和一个客户模型。为了最小化代码，我省略了所有的构造函数和一些getter和setter

用户模型

@Entity
@Table(name = "user", catalog = "...")
public class User implements java.io.Serializable {

        private String username;
        private boolean enabled;
        private String password;
        private Set<Storeproperties> storepropertieses = new HashSet<Storeproperties>(
                0);
        private Set<UserRole> userRoles = new HashSet<UserRole>(0);
        private Set<Customerproperties> customerpropertieses = new HashSet<Customerproperties>(
                0);

        @Id
        @Column(name = "username", unique = true, nullable = false, length = 45)
        public String getUsername() {
            return this.username;
        }

        @OneToMany(fetch = FetchType.LAZY, mappedBy = "user")
        public Set<Customerproperties> getCustomerpropertieses() {
            return this.customerpropertieses;
        }

    }

最后，我在DAO中使用的获取CustomerProperty的方法如下：

public Customerproperties getCustomerByUserName(String username) {
        Customerproperties customer = (Customerproperties) getCurrentSession()
                .createQuery("from Customerproperties c inner join c.User u where u.username = :user")
                .setParameter("user", username)
                .uniqueResult();
        return customer;
    }

当我单击链接时，会出现以下异常：

 "HTTP Status 500 - Request processing failed; nested exception is org.hibernate.QueryException: could not resolve property: User of: com.IS202_1.users.model.Customerproperties [from com.IS202_1.users.model.Customerproperties c inner join c.User u where u.username = :user]"

 "HTTP Status 500 - Request processing failed; nested exception is java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to com.IS202_1.users.model.Customerproperties" 

当我将c.User更改为c.User时，我得到以下异常：

 "HTTP Status 500 - Request processing failed; nested exception is org.hibernate.QueryException: could not resolve property: User of: com.IS202_1.users.model.Customerproperties [from com.IS202_1.users.model.Customerproperties c inner join c.User u where u.username = :user]"

 "HTTP Status 500 - Request processing failed; nested exception is java.lang.ClassCastException: [Ljava.lang.Object; cannot be cast to com.IS202_1.users.model.Customerproperties" 

---

为了更好地阅读，我建议将.setParameter（“用户”，用户名）更改为.setParameter（“用户名”，用户名）@realUser404，谢谢！您向我们展示了非常广泛的代码。试着把代码总结成一个最小的可复制的例子（见：）@Christophe好吧，我会试试的！