求助: 关于spring data JPA 中的多表查询

[qq_37983243]

求助：代码中有一句

Join<Accept, ResendAcceptNumberCount> join =root.join(root.getModel().getSingularAttribute("acceptNumber", ResendAcceptNumberCount.class),JoinType.LEFT);

报错了：

SingularAttribute  named acceptNumber and of type entity.ResendAcceptNumberCount is not present

请问是什么问题呢？
Accept代码如下：

public class Accept{

    private Integer id;

    private String acceptNumber; //受理号

    //省略其余属性

    @Id

    @GeneratedValue(strategy = GenerationType.AUTO)

    @Column(name = "id")

    public Integer getId() {

        return id;

    }



    public void setId(Integer id) {

        this.id = id;

    }



    @Basic

    @Condition

    @Column(name = "accept_number")

    public String getAcceptNumber() {

        return acceptNumber;

    }



    public void setAcceptNumber(String acceptNumber) {

        this.acceptNumber = acceptNumber;

    }

    //.....

}

ResendAcceptNumberCount代码如下

public class ResendAcceptNumberCount {

	private Integer id;

	private String acceptNumber;

	//....

	@Id

	@GeneratedValue(strategy = GenerationType.IDENTITY)

	@Column(name = "id")

	public Integer getId() {

		return id;

	}

	public void setId(Integer id) {

		this.id = id;

	}

	@Basic

	@Column(name = "accpet_Number")

	public String getAcceptNumber() {

		return acceptNumber;

	}

	public void setAcceptNumber(String acceptNumber) {

		this.acceptNumber = acceptNumber;

	}

    //...

}