key words:hibernate,load,session.get,session.load()
public?class?Parent?implements?Serializable?{
????/**?identifier?field?*/
????private?Long?id;
????/**?persistent?field?*/
????private?List?childs;
????/**?full?constructor?*/
????public?Parent(Long?id,?List?childs)?{
????????this.id?=?id;
????????this.childs?=?childs;
????}
????/**?default?constructor?*/
????public?Parent()?{
????}
????/**?
?????*????????????@hibernate.id
?????*?????????????generator-class="assigned"
?????*?????????????type="java.lang.Long"
?????*?????????????column="id"
?????*
?????*/
????public?Long?getId()?{
????????return?this.id;
????}
????public?void?setId(Long?id)?{
????????this.id?=?id;
????}
????/**
?????*????????????@hibernate.set
?????*?????????????lazy="true"
?????*?????????????inverse="true"
?????*?????????????cascade="none"
?????*????????????@hibernate.collection-key
?????*?????????????column="parent_id"
?????*????????????@hibernate.collection-one-to-many
?????*?????????????class="net.foxlog.model.Child"
?????*?????????
?????*/
????public?List?getChilds()?{
????????return?this.childs;
????}
????public?void?setChilds(List?childs)?{
????????this.childs?=?childs;
????}
????public?String?toString()?{
????????return?new?ToStringBuilder(this)
????????????.append("id",?getId())
????????????.toString();
????}
????public?boolean?equals(Object?other)?{
????????if?(?!(other?instanceof?Parent)?)?return?false;
????????Parent?castOther?=?(Parent)?other;
????????return?new?EqualsBuilder()
????????????.append(this.getId(),?castOther.getId())
????????????.isEquals();
????}
????public?int?hashCode()?{
????????return?new?HashCodeBuilder()
????????????.append(getId())
????????????.toHashCode();
????}
}
Parent?parent?=?(Parent)session.load(Parent.class,new Integer(7));
運行提示出錯，"can't get Entity.."
知道是什么低級錯誤么?? 其實很弱智的東西，但是不注意還就會出現，呵呵，答案如下:
Parent?parent?=?(Parent)session.load(Parent.class,new?Long(7))