选择一个对象的类

Question

尝试从HQL查询创建一个对象，但是我无法弄清楚我做错了什么：（Spring 3.1.1）如何返回Java类，或者至少返回类或实体？< / p>

public Employee findEmployeeById(int id){

    String sql = "SELECT * FROM schema.Employee WHERE ID = ?";
    Employee employee = (Employee)getJdbcTemplate().queryForObject(
            sql, new Object[] { id },new BeanPropertyRowMapper(Employee.class));

    return employee;

}

Employee.java

 @Entity
    @Table(name="schema.Employee")
    public class Employee {

    @Id
    @GeneratedValue
    @Column(name="ID")
    private Integer id;

    @Column(name="NAME")
    private String name;

    @ManyToOne
    @JoinColumn(name = "DEPARTMENT_ID")
    private Department department;

    // Accessors

    }

Department.Java

@Entity
@Table(name="schema.DEPARTMENT")
public class Department {

    @Id
    @GeneratedValue
    @Column(name="DEPARTMENT_ID")
    private Long departmentId;

    @Column(name="DEPT_NAME")
    private String departmentName;

    @OneToMany(mappedBy="department")
    private Set<employee> employees;

    // Getter and Setter methods
}