Question

我使用Spring mvc和Hibernate和AliasToBeanResultTransformer。当我从jsp获取数据时，我收到了SQL的异常。

模特课：

@Entity
@Table(name="CARS")
public class Car {

    @Id
    @Column(name="ID", nullable=false, unique=true)
    @GeneratedValue(strategy=GenerationType.AUTO)
    private int id;

    @Column(name="NAME", length=50)
    private String name;
    public int getId() {
       return id;
    }
    public void setId(int id) {
       this.id = id;
    }
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
  }

此方法从服务获取数据：

public List<Car> getAllCars() {

    Session session = HibernateUtils.getSession(sessionFactory);
    String sqlQuery = GetSqlUtils.getSqlQueryString(CarRepositoryImpl.class, SQL_DIR + GET_ALL_CARS);
    List<Car> list = null;
    try {
        Query query = session.createSQLQuery(sqlQuery);
        list = query.setResultTransformer(new AliasToBeanResultTransformer(Car.class)).list();
    } catch (HibernateException e) {
        logger.error("error at CarRepositoryImpl.getAllCars: " + e.getMessage());
    } finally {
        HibernateUtils.closeCurrentSession(session);
    }       
    return list;            
}

SQL：

SELECT CAR.ID AS ID, CAR.NAME AS NAME 
     FROM 
        CARS CAR

记录消息：

CarRepositoryImpl - error at CarRepositoryImpl.getAllCars: Could not find setter for ID on class com.tct.web.model.Car

如何解决此错误？非常感谢！

Answer 1

将int更改为Integer以获取ID

private Integer id;
public Integer getId() {
   return id;
}
public void setId(Integer id) {
   this.id = id;
}

Answer 2

您的字段以小写形式声明，并使用大写别名。

尝试更改它们，使它们与字段名称完全相同：

SELECT CAR.ID AS id, CAR.NAME AS name

无法在类com.tct.model.Car上找到ID的setter

2 个答案: