Java 无法通过反射 getter 获取字段值
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Could not get a field value by reflection getter
提问by dtrunk
I'm trying to filter a result set by a foreign key:
我正在尝试通过外键过滤结果集：
createCriteria(Person.class).add(Restrictions.ne("position", 1L)).list()
But getting this exception: org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.example.model.Position.id
但是得到这个例外： org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.example.model.Position.id
Here are the necessary JPA entities (trimmed down to the necessary fields):
以下是必要的 JPA 实体（缩减为必要的字段）：
@Entity
@Table
public class Person {
@Id
@GeneratedValue
private Long id;
@ManyToOne
@JoinColumn(nullable = false)
@ForeignKey(name = "person_position_fkey")
private Position position;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Position getPosition() {
return position;
}
public void setPosition(Position position) {
this.position = position;
}
}
@Entity
@Table
public class Position {
@Id
@GeneratedValue
private Long id;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
}
采纳答案by Yurii Shylov
Try Restrictions.ne("position.id", 1L)
尝试 Restrictions.ne("position.id", 1L)
