使用hibernate annotation在继承过程中出现Unable to instantiate default tuplizer,找了一天都没找到问题

[wdl5i]

请教高手CompanyCustomer从Customer继承，但是启动tomcat6的时候出现Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer],不知道是怎么回事？多谢
Customer.java

@Entity
@Inheritance(strategy=InheritanceType.SINGLE_TABLE)
@DiscriminatorColumn(
name="discriminator",
discriminatorType=DiscriminatorType.STRING
)
@DiscriminatorValue("customer")
public class Customer {

private int id;
private Customer parent;

public String getCategory(){
return "未知";
}

@Id
@GeneratedValue
public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

@ManyToOne
@JoinColumn(name="pid")
public Customer getParent() {
return parent;
}

public void setParent(Customer parent) {
this.parent = parent;
}
}



CompanyCustomer.java
@Entity
@DiscriminatorValue("company")
public class CompanyCustomer extends Customer {

//人员规模
private String employeeSize;

@Column(insertable=false,updatable=false)
public String getCategory(){
return "公司";
}

public String getEmployeeSize() {
return employeeSize;
}

public void setEmployeeSize(String employeeSize) {
this.employeeSize = employeeSize;
}
}


Error creating bean with name 'sessionFactory' defined in class path resource [beans.xml]: Invocation of init method failed; nested exception is org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
Caused by: org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]
Caused by: java.lang.reflect.InvocationTargetException
Caused by: org.hibernate.PropertyNotFoundException: Could not find a setter for property category in class com.wdl.crm.model.PersonalCustomer

不写这一句@Column(insertable=false,updatable=false)
则会出现重复映射的问题，不知道怎么解决，找了一天都没找到问题出在哪里,和没有setCategory方法没关系，因为我在父类和子类把getCategory方法都去掉也报同样的错误

[wp315157110]

我也碰到了同样的问题。。杯具

[liufeng0209]

我觉得,使用单表继承怎么也没有多表继承好,单表继承存在数据冗余,如果子类还有关联关系会更加麻烦.
建议换一种继承方式吧

[karali]

我遇到过这样的问题：是因为配置文件里多出了一个一对多的配置，我把它删了，问题就解决了。