org.hibernate.AnnotationException：集合既没有泛型类型，也没有OneToMany.targetEntity（） [英] org.hibernate.AnnotationException: Collection has neither generic type or OneToMany.targetEntity()

问题描述

我使用 Hibernate Tools 来生成我的Hibernate POJO映射。

不幸的是，由Hibernate工具生成的代码似乎不起作用，我得到了异常

org .hibernate.AnnotationException：Collection既没有泛型类型，也没有OneToMany.targetEntity（）

生成异常的代码部分是

  / ** 
 *由hbm2java生成的ClassFlag 
 * / 
 @Entity 
 @Table（name = class_flag，catalog =incbszdb）
 public class ClassFlag implements java.io.Serializable {
 
 ... 
 / * HERE * / 
 private Set classFlagI18ns = new HashSet（0）; 
 
 / * HERE * / 
 public void setClassFlagI18ns（Set classFlagI18ns）{
 this.classFlagI18ns = classFlagI18ns; 
} 
 
} 
  

根据这篇文章

http://www.mkyong.com/hibernate/org-hibernate-annotationexception-collection-has-neither-generic-type-or-onetomany- targetentity / comment-page-1 /＃comment-67404

和这篇文章

< a href =http://www.mkyong.com/hibernate/hibernate-error-collection-has-neither-generic-type-or-onetomany-targetentity/ =noreferrer> http：//www.mkyong .com / hibernate / hibernate-error-collection-have-none-generic-type-onetomany-targetentity /

你必须更改生成的Hibernates手动编码。

这是我想避免的一件事。任何想法可能是什么问题？

问候

JS

只需检查使用Java 5语法 ，如附件屏幕截图所示，
Hibernate Tools为集合生成正确的通用类型。 i.stack.imgur.com/Fz3OP.pngalt =在这里输入图片描述>

I used Hibernate Tools to generate my Hibernate POJO mapping.

Unfortunately the code generated by Hibernate tools seems not to work, I get the exception

org.hibernate.AnnotationException: Collection has neither generic type or OneToMany.targetEntity()

The code parts that generate the exception are

/**
 * ClassFlag generated by hbm2java
 */
@Entity
@Table(name = "class_flag", catalog = "incbszdb")
public class ClassFlag implements java.io.Serializable {

    ....
    /* HERE */
    private Set classFlagI18ns = new HashSet(0);

    /* HERE */
    public void setClassFlagI18ns(Set classFlagI18ns) {
      this.classFlagI18ns = classFlagI18ns;
    }

}  

According to this post

http://www.mkyong.com/hibernate/org-hibernate-annotationexception-collection-has-neither-generic-type-or-onetomany-targetentity/comment-page-1/#comment-67404

and this post

http://www.mkyong.com/hibernate/hibernate-error-collection-has-neither-generic-type-or-onetomany-targetentity/

You have to change Hibernates generated code by yourself by hand.

This is one thing I want to avoid. Any ideas what could be the problem?

Regards

JS

解决方案

I have found a solution for me that works.

Simply check "Use Java 5 Syntax" as depicted in the attached Screenshot and Hibernate Tools generate the correct generic types for collections.

这篇关于org.hibernate.AnnotationException：集合既没有泛型类型，也没有OneToMany.targetEntity（）的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！