使用referenceColumnName时OnetoOne双向关联错误

公司实体

@Entity
@Table(name="company")

public class Company implements Serializable {

    private static final long serialVersiOnUID= 1L;

    @Id
    @GeneratedValue
    private int id;

    @Column(name="company_id")
    private int cmpId;

    @Column(name="company_name")
    private String companyName;

    @OneToOne(fetch=FetchType.LAZY, mappedBy="company")
    private Employee employee;




}

员工实体

@Entity
@Table(name="employee")
public class Employee implements Serializable {

    private static final long serialVersiOnUID= 1L;

    @Id
    @GeneratedValue
    private int id;

    @Column(name="emp_id")
    private int empId;

    @Column(name="emp_name")
    private String empName;

    @OneToOne(fetch=FetchType.LAZY)
    @JoinColumn(name="cmp_id", referencedColumnName="company_id")
    private Company company;

}

公司服务

@Service
public class CompanyService {

    @Autowired
    private CompanyRepository companyRepo;

    public Company fetchCompany(int cmpId){
        System.out.println("11111111111111111");
        return companyRepo.findByCmpId(cmpId);
    }
}

公司回购

public interface CompanyRepository extends JpaRepository{ 

    @Query(value="select a from Company a join fetch a.employee where a.cmpId = ?1")
    public Company findByCmpId(int cmpId);
}

API

@RequestMapping("/cmp/{cmpId}")
public void findCmp(@PathVariable int cmpId){
    Company cmp = cmpService.fetchCompany(cmpId);
    System.out.println(cmp.getEmployee().getEmpName());
}

问题是当我尝试执行我的代码时,我收到以下错误:

  Hibernate: select company0_.id as id1_1_0_, employee1_.id as id1_2_1_, company0_.company_id as company_2_1_0_, company0_.company_name as company_3_1_0_, employee1_.cmp_id as cmp_id4_2_1_, employee1_.emp_id as emp_id2_2_1_, employee1_.emp_name as emp_name3_2_1_ from company company0_ inner join employee employee1_ on company0_.id=employee1_.cmp_id where company0_.company_id=?
2017-04-21 17:22:11.386 ERROR 10766 --- [nio-8105-exec-1] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.orm.jpa.JpaSystemException: Error accessing field [private int com.example.domain.Company.cmpId] by reflection for persistent property [com.example.domain.Company#cmpId] : 1; nested exception is org.hibernate.property.access.spi.PropertyAccessException: Error accessing field [private int com.example.domain.Company.cmpId] by reflection for persistent property [com.example.domain.Company#cmpId] : 1] with root cause

java.lang.IllegalArgumentException: Can not set int field com.example.domain.Company.cmpId to java.lang.Integer
    at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:167) ~[na:1.8.0_91]
    at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(UnsafeFieldAccessorImpl.java:171) ~[na:1.8.0_91]
    at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAccessorImpl.java:58) ~[na:1.8.0_91]
    at sun.reflect.UnsafeIntegerFieldAccessorImpl.getInt(UnsafeIntegerFieldAccessorImpl.java:56) ~[na:1.8.0_91]
    at sun.reflect.UnsafeIntegerFieldAccessorImpl.get(UnsafeIntegerFieldAccessorImpl.java:36) ~[na:1.8.0_91]
    at java.lang.reflect.Field.get(Field.java:393) ~[na:1.8.0_91]

如何解决这个问题？此外,当我删除referenceColumnName时,错误被删除但是它们正在加入公司类的主键,这是我不想要的.