JAXB在对象图中检测到循环 [英] JAXB A cycle is detected in the object graph

问题描述

我想用JAXB将我的pojo转换为json，我的pojo有一对多的关系，当我将我的pojo转换为json时，JAXB会生成错误在对象图中检测到一个循环。这将导致无限深的XML 。

I want to convert my pojo to json with JAXB, my pojo have one to many relation, and when i convert my pojo to json, JAXB generate error "A cycle is detected in the object graph. This will cause infinitely deep XML".

我从网上读到，这个问题可以通过@XmlID和@XmlIDREF的帮助解决，但是有一个问题，我的Id属性不是字符串类型但很久。据我所知@XmlID只能用于String属性。

I read from web that, this problem can be solved with help from @XmlID and @XmlIDREF, but there is one problem, my Id attribute is not String type but Long. and as far as i know @XmlID can be used only with String property.

其他网页建议使用eclipselink MOXy，但MOXy无法生成json。

Other web suggest using eclipselink MOXy, but MOXy cannot generate json.

推荐答案

正如您在问题中提到的那样 EclipseLink MOXy （我是技术主管）拥有 @XmlInverseReference 注释来解决双向关系问题。从EclipseLink 2.4开始，MOXy可以生成/使用JSON。

As you mentioned in your question EclipseLink MOXy (I'm the tech lead) has the @XmlInverseReference annotation to solve the problem of bidirectional relationships. As of EclipseLink 2.4 MOXy can produce/consume JSON.

更多信息

• http：// bdoughan .blogspot.com / 2010/07 / jpa-entities-to-xml-bidirectional.html


• http://blog.bdoughan.com/2011/08/json-binding-with-eclipselink-moxy.html

• http://bdoughan.blogspot.com/2010/07/jpa-entities-to-xml-bidirectional.html
• http://blog.bdoughan.com/2011/08/json-binding-with-eclipselink-moxy.html

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