XSD中的嵌套元素会导致JAXB中出现非法类继承循环异常,如何才能正确覆盖绑定? [英] Nested elements in XSD cause Illegal class inheritance loop exception in JAXB, how can I properly override the bindings?
问题描述
我遇到了问题,我正在尝试绑定一个名为包含三次的XML。
I have got a problem, I'm trying to bind an XML where there are the name 'Contains' three times.
所以我读到可以使用绑定文件覆盖节点名称。目前它不起作用。
So I read that it's possible to override node names with a binding file. At the moment it doesn't work.
我认为错误来自绑定文件中的Xpath,但我不确定。我已经尝试了很多,但我从未成功。
I think mistake come from Xpath in the binding file, but I not sure. I have tried lot of way, but I have never succeed.
我的XSD文件:
<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="fr:gouv:ae:archive:draft:standard_echange_v0.2" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" jaxb:version="2.1">
<xs:element name="ArchiveTransferRequest">
<xs:complexType>
<xs:sequence>
<xs:element type="xs:string" name="Comment"/>
<xs:element type="xs:dateTime" name="Date"/>
<xs:element name="TransferRequestIdentifier">....</xs:element>
<xs:element name="TransferringAgency">...</xs:element>
<xs:element name="ArchivalAgency">...</xs:element>
<xs:element name="Contains">
<xs:complexType>
<xs:sequence>
<xs:element type="xs:string" name="ArchivalAgencyArchiveIdentifier"/>
<xs:element type="xs:string" name="ArchivalAgreement"/>
<xs:element type="xs:string" name="ArchivalProfile"/>
<xs:element name="DescriptionLanguage">...</xs:element>
<xs:element name="DescriptionLevel">...</xs:element>
<xs:element type="xs:string" name="Name"/>
<xs:element name="ContentDescription">...</xs:element>
<xs:element name="Contains" id="contains" >
<xs:complexType>
<xs:sequence>
<xs:element name="DescriptionLevel">...</xs:element>
<xs:element type="xs:string" name="Name"/>
<xs:element name="ContentDescription">...<xs:element>
<xs:element name="Contains" maxOccurs="unbounded" minOccurs="0">
<xs:annotation>
<xs:documentation>a new contains for a new XML</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
...
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
用于修改第二个和第三个'Contains'节点的绑定文件。
And the binding file to modify the second and the thirs 'Contains' node.
<jaxb:bindings xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
version="2.1">
<jaxb:bindings schemaLocation="seda_actes.xsd">
<jaxb:bindings node="//xs:element[@name='ArchiveTransferRequest']/xs:complexType/xs:sequence/xs:element[@name='Contains']/xs:complexType/xs:sequence/xs:element[@name='Contains']">
<jaxb:class name="SecondContains"/>
</jaxb:bindings>
<jaxb:bindings node="//xs:element[@name='ArchiveTransferRequest']/xs:complexType/xs:sequence/xs:element[@name='Contains']/xs:complexType/xs:sequence/xs:element[@name='Contains']/xs:complexType/xs:sequence/xs:element[@name='Contains']">
<jaxb:class name="ThirdContains"/>
</jaxb:bindings>
</jaxb:bindings>
</jaxb:bindings>
但是当我执行以下xjc命令时:
But when I execute the following xjc command :
xjc -b C:\ Users \ jtvervliet \Documents\SAE\seda_actes_binding.xml -d C:\ Users \ jtvervliet \ workspace \ poc_bordereau \ src -p test4.impnat.xml C:\ Users \ jtvervliet \Documents\SAE\seda_actes.xsd
xjc -b C:\Users\jtvervliet\Documents\SAE\seda_actes_binding.xml -d C:\Users\jtvervliet\workspace\poc_bordereau\src -p test4.impnat.xml C:\Users\jtvervliet\Documents\SAE\seda_actes.xsd
我有这个错误:
分析dunchéma...
汇编dunschéma...
例外情况threadmainjava.lang.IllegalArgumentException:非法的类继承循环。外类SecondContains可能不是内部类的子类:SecondContains
at com.sun.codemodel.internal.JDefinedClass._extends(JDefinedClass.java:258)
at com.sun.tools.internal.xjc.generator .bean.ImplStructureStrategy $ 1._extends(ImplStructureStrategy.java:104)
at com.sun.tools.internal.xjc.generator.bean.BeanGenerator。(BeanGenerator.java:200)
at com.sun .tools.internal.xjc.generator.bean.BeanGenerator.generate(BeanGenerator.java:154)
at com.sun.tools.internal.xjc.model.Model.generateCode(Model.java:275)
at com.sun.tools.internal.xjc.Driver.run(Driver.java:348)
at com.sun.tools.internal.xjc.Driver.run(Driver.java:185)
at com.sun.tools.internal.xjc.Driver._main(Driver.java:108)
at com.sun.tools.internal.xjc.Driver.access $ 000(Driver.java:65)
at com.sun.tools.internal.xjc.Driver $ 1.run(Driver.java:88)
analyse dun schéma... compilation dun schéma... Exception in thread "main" java.lang.IllegalArgumentException: Illegal class inheritance loop. Outer class SecondContains may not subclass from inner class: SecondContains at com.sun.codemodel.internal.JDefinedClass._extends(JDefinedClass.java:258) at com.sun.tools.internal.xjc.generator.bean.ImplStructureStrategy$1._extends(ImplStructureStrategy.java:104) at com.sun.tools.internal.xjc.generator.bean.BeanGenerator.(BeanGenerator.java:200) at com.sun.tools.internal.xjc.generator.bean.BeanGenerator.generate(BeanGenerator.java:154) at com.sun.tools.internal.xjc.model.Model.generateCode(Model.java:275) at com.sun.tools.internal.xjc.Driver.run(Driver.java:348) at com.sun.tools.internal.xjc.Driver.run(Driver.java:185) at com.sun.tools.internal.xjc.Driver._main(Driver.java:108) at com.sun.tools.internal.xjc.Driver.access$000(Driver.java:65) at com.sun.tools.internal.xjc.Driver$1.run(Driver.java:88)
Any我们将不胜感激。)
Any ideas will be appreciated :)
谢谢。
推荐答案
你写道:
<jaxb:bindings node="//xs:element[@name='ArchiveTransferRequest']
/xs:complexType/xs:sequence/xs:element[@name='Contains']
/xs:complexType/xs:sequence/xs:element[@name='Contains']">
我拿了你的XSD并修复它使它成为一份法律文件。然后我接受了你的XPath表达式,他们正确选择了 xs:element
。
I took your XSD and fixed it to make it a legal document. Then I took your XPath expressions, they selected the xs:element
correctly.
要使其正常工作还需要做一件事:选择 xs:complexType
,而不是 xs:element
,因为这是JAXB用来创建类而不是元素的。
There's only one more thing you need to do to make this working: select the xs:complexType
, not the xs:element
, because that is what JAXB uses to create the classes, not the elements.
以下内容应该有效:
<jaxb:bindings xmlns:jaxb="http://java.sun.com/xml/ns/jaxb"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
version="2.1">
<jaxb:bindings schemaLocation="seda_actes.xsd">
<jaxb:bindings node="//xs:element[@name='ArchiveTransferRequest']
/xs:complexType/xs:sequence/xs:element[@name='Contains']
/xs:complexType/xs:sequence/xs:element[@name='Contains']
/xs:complexType">
<jaxb:class name="SecondContains"/>
</jaxb:bindings>
<jaxb:bindings node="//xs:element[@name='ArchiveTransferRequest']
/xs:complexType/xs:sequence/xs:element[@name='Contains']
/xs:complexType/xs:sequence/xs:element[@name='Contains']
/xs:complexType/xs:sequence/xs:element[@name='Contains']
/xs:complexType">
<jaxb:class name="ThirdContains"/>
</jaxb:bindings>
</jaxb:bindings>
</jaxb:bindings>
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