hibernate - 严重:org.hibernate.exception.GenericJDBCException:索引处缺少 IN 或 OUT 参数::1

Question

我有一个 Oracle 函数，它返回 sys_refcursor，它是

CREATE OR REPLACE FUNCTION SCOTT.getemployees
   RETURN SYS_REFCURSOR
AS
   o_cursor   SYS_REFCURSOR;
BEGIN
   OPEN o_cursor FOR
      SELECT EMPNO,
             ENAME,
             JOB,
             MGR,
             HIREDATE,
             SAL,
             COMM,
             DEPTNO
        FROM emp;   
   RETURN o_cursor;
END;
/

在我的实体类中，我声明为

@Entity
    @javax.persistence.NamedNativeQuery(name = "getEmp", 
    query = "{ ? = call getemployees }", resultClass = Employees.class, hints = {
    @javax.persistence.QueryHint(name = "org.hibernate.callable", value = "true") })
    @Table(name = "EMPLOYEES")
    public class Employees {

在 DAO 我有

@Inject
    private SessionFactory sessionFactory;

    @Override
    public List<Employees> getEmployees() {

        List query = new ArrayList<Employees>();
         try{
         query = sessionFactory.getCurrentSession()
                .getNamedQuery("getEmp").list();
         }
         catch(Exception e){
             System.out.println("exception "+e.getMessage());
             e.printStackTrace();
         }
        return query;
    }

当我运行时出现异常，这可能是什么原因？

INFO: Hibernate: { ? = call getemployees } SEVERE: org.hibernate.exception.GenericJDBCException: Missing IN or OUT parameter at index:: 1 at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:54) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125) at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110) at org.hibernate.engine.jdbc.internal.proxy.AbstractStatementProxyHandler.continueInvocation(AbstractStatementProxyHandler.java:129) at org.hibernate.engine.jdbc.internal.proxy.AbstractProxyHandler.invoke(AbstractProxyHandler.java:81)

Answer 1

我已经设法解决了这个问题。

定义为数字的数据库表列声明为 int在实体类中。
我已将它们更改为 Integer问题得到解决。

private Integer deptNo;

public Integer getDeptNo() {
        return deptNo;
    }

    public void setDeptNo(Integer deptNo) {
        this.deptNo = deptNo;
    }