【发布时间】：2014-04-24 09:39:56
【问题描述】：
我正在尝试使用 hibernate 插入多对多关系，但出现此错误。
2014-04-24 14:50:47,820 错误 [BasicPropertyAccessor.java:118]：类中的 IllegalArgumentException：com.jellboi.maniartyre.entities.AbstractEntity，属性的设置方法：pkey
2014-04-24 14:50:47,827 错误 [BasicPropertyAccessor.java:122]：预期类型：java.lang.Long，实际值：org.hibernate.id.IdentifierGeneratorHelper$2
2014 年 4 月 24 日下午 2:55:25 org.apache.catalina.core.StandardWrapperValve 调用 严重：servlet applicationController 的 Servlet.service() 抛出异常 java.lang.IllegalArgumentException: java.lang.ClassCastException@17d66f6 在 sun.reflect.GeneratedMethodAccessor27.invoke（未知来源） 在 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) 在 java.lang.reflect.Method.invoke(Method.java:597)
这是我正在尝试的代码。 VehicleProduct 类
@Entity
@Table(name="m_vehicle_product")
@AssociationOverrides({
@AssociationOverride(name = "pk.vehicle",
joinColumns = @JoinColumn(name = "vehicle_id")),
@AssociationOverride(name = "pk.product",
joinColumns = @JoinColumn(name = "product_id")),
})
public class VehicleProduct extends AbstractEntity{
private String service;
private VehicleProductId pk = new VehicleProductId();
@Column(name = "service")
public String getService() {
return service;
}
public void setService(String service) {
this.service = service;
}
@EmbeddedId
public VehicleProductId getPk() {
return pk;
}
public void setPk(VehicleProductId pk) {
this.pk = pk;
}
@Transient
public Product getProduct(){
return getPk().getProduct();
}
public void setProduct(Product product){
getPk().setProduct(product);
}
@Transient
public Vehicle getVehicle(){
return getPk().getVehicle();
}
public void setVehicle(Vehicle vehicle){
getPk().setVehicle(vehicle);
}
}
VehicleProductId 类
@Embeddable
public class VehicleProductId implements java.io.Serializable {
private Vehicle vehicle;
private Product product;
@ManyToOne
public Vehicle getVehicle() {
return vehicle;
}
public void setVehicle(Vehicle vehicle) {
this.vehicle = vehicle;
}
@ManyToOne
public Product getProduct() {
return product;
}
public void setProduct(Product product) {
this.product = product;
}
}
这就是我插入的方式。
for(int i=0;i<jobid.length;i++){
product = productService.findByPkey(jobid[i]);
vehicleProduct.setProduct(product);
vehicleProduct.setService(jobdesc[i]);
pkey2 = vehicleProductService.save(vehicleProduct);
}
请指导我。几个小时以来一直在尝试解决这个问题。
编辑
@MappedSuperclass
public class AbstractEntity implements IEntity, Serializable{
private static final long serialVersionUID = 1L;
private Long pkey;
private Boolean deleted;
private String creator;
private Date created;
private String changer;
private Date changed;
private Long version;
@Id
@GeneratedValue
@Column(name="pkey")
public Long getPkey() {
return pkey;
}
public void setPkey(Long pkey) {
this.pkey = pkey;
}
@Column(name="deleted")
@XmlTransient
public Boolean getDeleted() {
return deleted;
}
public void setDeleted(Boolean deleted) {
this.deleted = deleted;
}
@Column(name="creator")
public String getCreator() {
return creator;
}
}........
它包含所有这些 getter 和 setter。
【问题讨论】：
-
你能贴出 AbstractEntity 的代码吗？
-
@Shiraaz.M 添加了代码。