Question

我有这个例外：

<div id="pentagon"></div>

当我想删除StaffRegiAddressInfo对象时，我在这个实体中使用了manyToOne映射。

以下是代码流程：

查看代码：

  java.lang.IllegalArgumentException: Provided id of the wrong type for   class com.netizenbd.domain.staff.StaffRegiAddressInfo. Expected: class java.lang.Integer, got class com.netizenbd.domain.staff.StaffRegiAddressInfo

这是ManageBean staffUpdateMB removeAddress（）;方法：

    <p:dataGrid value="#{staffUpdateMB.addressInfoList}"
        id="addesList" var="address" columns="1" layout="grid"
        styleClass="NoPadding NoIndent">
        <p:panel>
            <div
                class="Container100 Responsive100 TealGreenBack BordRad5 White NoIndent">

                <div class="Container50 Responsive100 NoIndent">
                    <h:outputText value="#{address.addressType}" styleClass="Fs22" />
                </div>
                <div class="Container50 Responsive100 TexAlRight NoIndent">
                    <p:commandButton class="TealGreenBack" icon="fa fa-edit"
                    onstart="PF('staffAddressEditDialog').show()">
                    <f:setPropertyActionListener value="#{address}"
                            target="#{staffUpdateMB.beanAddressInfo}"/>
                    </p:commandButton>
                    <p:commandButton styleClass="RedButton RaisedButton"
                        action="#{staffUpdateMB.removeAddress}" icon="fa fa-trash-o"
                        update="addesList" ajax="false">
                        <f:setPropertyActionListener value="#{address}"
                            target="#{staffUpdateMB.beanAddressInfo}" />
                    </p:commandButton>
                </div>
            </div>
    ... .... ....
    </p:panel>
    </p:dataGrid>

这是扩展EntityDao的addressInfoDao：

    public void removeAddress() {
    try {

        System.out.println("Address ID :"+this.beanAddressInfo.getAddressID());
        StaffRegiAddressInfo address=addressInfoDao.findById(this.beanAddressInfo.getAddressID());
        System.out.println("Address ID :"+address.getAddressID());
        addressInfoDao.remove(address);


        context.addMessage(null, new FacesMessage(msg.getPropValue("deleteSuccess")));
    } catch (Exception e) {
        context.addMessage(null, new FacesMessage(msg.getPropValue("deleteError")));
        logger.error("This is error : " + e);
        logger.fatal("This is fatal : " + e);
    }
}

这是实现EntityDao：

    public interface StaffRegiAddressInfoDao extends EntityDao<StaffRegiAddressInfo>{

    }

    public interface EntityDao<E> {

void persist(E e) throws Exception;

void merge(E e) throws Exception;

void remove(Object id) throws Exception;
    }

以下为例外情况：

    public class EntityService<E>  implements EntityDao<E> {

@PersistenceContext(unitName="persistenceUnit")
protected EntityManager entityManager;

protected E instance;
private Class<E> entityClass;


@Transactional
public void persist(E e) throws HibernateException{     
    getEntityManager().persist(e);
}
@Transactional
public void merge(E e) throws HibernateException{     
    getEntityManager().merge(e);
}
@Transactional
public void remove(Object id) throws Exception{     
    getEntityManager().remove((E)getEntityManager().find(getEntityClass(), id));
    getEntityManager().flush();
}

此处还有实体：

    Address ID :33
    Address ID :33
    01/Mar/2016 18:14:05,440- StaffUpdateMB: This is error :      java.lang.IllegalArgumentException: Provided id of the wrong type for class com.netizenbd.domain.staff.StaffRegiAddressInfo. Expected: class java.lang.Integer, got class com.netizenbd.domain.staff.StaffRegiAddressInfo
    01/Mar/2016 18:44:57,091- StaffUpdateMB: This is fatal : java.lang.IllegalArgumentException: Provided id of the wrong type for class com.netizenbd.domain.staff.StaffRegiAddressInfo. Expected: class java.lang.Integer, got class com.netizenbd.domain.staff.StaffRegiAddressInfo

Answer 1

尝试更改ManageBean staffUpdateMB removeAddress（）;方法：

addressInfoDao.remove（地址）;

通过

addressInfoDao.remove（address.getAddressID（））;

在你的DAO中

你有：

public void remove（Object id）;

但是你传递的是一个对象，而不是ID

如何修复jpa中需要正确实体id的java.lang.IllegalArgumentException

1 个答案: