异常而映射实体排在Spring的JdbcTemplate映射

Question

我有一个实体对象如下面的JPA

@Entity 
@Table(name="my_version") 
public class MyVersion implements EntityKeyOverride { 
    @Id 
    @GeneratedValue(strategy = GenerationType.AUTO) 
    @Column(name = "id") 
    private Long id; 

    @NotNull 
    private Long instanceId; 

    @NotNull 
    private Long documentId; 

    @NotNull 
    @Size(max = 255) 
    private String name; 


    @NotNull 
    private Integer majorVersion; 


    @NotNull 
    private Integer minorVersion; 

    @Size(max = 255) 
    private String classification; 

    @Size(max = 1500) 
    private String description; 

    @Size(max = 1500) 
    private String title; 

    @Size(max = 255) 
    private String lifecycle; 


    @NotNull 
    @Temporal(TemporalType.TIMESTAMP) 
    @DateTimeFormat(style = "LL", iso = ISO.DATE_TIME) 
    private Calendar createdDate; 

//getter and setter 

} 

我试图从休眠/ JPA的EntityManager到jdbctemplate.I移开我试图用我的实体作为BeanPropertyRowMapper而不是Customrowmapper。

jdbcTemplate.query(SQLQueryDescriptorTest, query.toString(), parameterMap, new BeanPropertyRowMapper(MyVersion.class)); 

我对此几乎没有怀疑。

1）如果我使用BeanPropertyRowMapper或CustomRowMapper，将应用注释类似@NotNull @Size(max = 255)？因为我正在离开实体。

2）使用BeanPropertyRowMapper时，我得到下面的异常。

caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type [java.sql.Timestamp] to required type [java.util.Calendar] for property 'createdDate'; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.sql.Timestamp] to required type [java.util.Calendar] for property 'createdDate': no matching editors or conversion strategy found 
     at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:591) 
     at org.springframework.beans.AbstractNestablePropertyAccessor.convertForProperty(AbstractNestablePropertyAccessor.java:603) 
     at org.springframework.beans.AbstractNestablePropertyAccessor.setPropertyValue(AbstractNestablePropertyAccessor.java:449) 

Answer 1

更改Calendar到Date并删除@Temporal和@DateTimeFormat注解。