这是实体类，我只是想保存这个实体，但当我试图点击api时，我得到了如下所示的错误，我非常确定这是由于一些Map问题，非常感谢任何帮助：-

@Entity
@Table(name = "productpurchasedata")
public class Test {

        @Id
        @GeneratedValue(strategy = GenerationType.AUTO)
        @Column(name = "customerid")
        private int customerid;
        @Column(name = "name")
        private String name;
        @Column(name = "mailid")
        private String mailid;
        @Column(name = "address")
        private String address;
        @Column(name = "city")
        private String city;
        @Column(name = "state")
        private String state;
        @Column(name = "postalcode")
        private String postalcode;
        @Column(name = "mobileno")
        private long mobileno;
        @ManyToOne(targetEntity = Test.class, fetch = FetchType.LAZY,optional = false)
        @JoinColumns({ @JoinColumn(name = "customerid", referencedColumnName = "customerid", insertable=false, updatable=false) })
        private PurchaseDetails purchasedetails;
        @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, targetEntity = Test.class)
        @JoinColumn(name = "customerid")
        private List<ProductPurchased> productpurchased;
        @ManyToOne(targetEntity = Test.class, fetch = FetchType.LAZY,optional = false)
        @JoinColumns({ @JoinColumn(name = "customerid", referencedColumnName = "customerid", insertable=false, updatable=false) })
        private PaymentHistory paymenthistory;

错误：

"message": "Error accessing field [private int com.bhushan.spring.files.excel.model.Test.customerid] by reflection for persistent property [com.bhushan.spring.files.excel.model.Test#customerid] : com.bhushan.spring.files.excel.model.PaymentHistory@7659b9; nested exception is org.hibernate.property.access.spi.PropertyAccessException: Error accessing field [private int com.bhushan.spring.files.excel.model.Test.customerid] by reflection for persistent property [com.bhushan.spring.files.excel.model.Test#customerid] : com.bhushan.spring.files.excel.model.PaymentHistory@7659b9",