一对多关系和其他对象关系 [英] One to many relationship and Other object relation

问题描述

我在学习hibernate。这可能是一个基本问题，我无法弄清楚这个问题，

我有一个叫做 Customer 的对象，它会有与地址对象（一对一关系）和门票对象（一对多关系） STRONG>。 [每位顾客可以有许多票> 。并且每张门票都有一个付款对象（一对一关系）。我在hibernate注释中指定了关系。

执行测试时出现以下错误，

 初始化SessionFactory创建failed.org.hibernate.AnnotationException：未知mappedBy in：com.test.model.Tickets.payment，引用属性unknown：com.test.model.Payment.tickets 
线程mainjava中的异常。 lang.ExceptionInInitializerError 
  

如果我在java中删除了 Payment对象及其引用以及 hibernate.cfg.xml 中的，对三个对象（客户，地址和票据）均可正常工作。如果为客户添加付款对象，它不起作用。我在哪里错了这个代码？

我的对象，
客户：

地址：

门票：

付款方式：

$ b 测试程序是：

Hibernate Configuration是：

解决方案

正如在错误消息中所说的，在 Payment 中没有名为票据的属性。取而代之的是名为 ticket （单数）的属性。应该使用以下内容：

  mappedBy =ticket
  

I am learning hibernate. It may be a basic question, I am not able to figure out the issue,

I am having an object called Customer, It will have a relationship with address object (one-to-one relation) and Tickets object (one-to-many relation). [Each customer can have many tickets]. And Each ticket will have a payment object (One-to-one relation). I specified the relation in hibernate annotation.

I am getting the below error when executing the test,

Initial SessionFactory creation failed.org.hibernate.AnnotationException: Unknown mappedBy in: com.test.model.Tickets.payment, referenced property unknown: com.test.model.Payment.tickets
Exception in thread "main" java.lang.ExceptionInInitializerError

If I remove the Payment object and their reference in java as well as in hibernate.cfg.xml, It works fine with three objects (Customer, Address, and Tickets). If add a Payment object for the customer , It is not working. Where am i wrong in this code ?

My objects, Customer :

Address :

Tickets :

Payment :

Test program is :

Hibernate Configuration is :

解决方案

As said in the error message, there is no property named tickets in Payment. Instead of it there is property named ticket (singular). Following should be used:

mappedBy="ticket"

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