Question

我是JAXB的新手，我想使用EclipseLink MOXy更改默认的名称空间前缀。我的package-info.java包含以下代码行：

@javax.xml.bind.annotation.XmlSchema (
namespace="http://namespace.mysite.com/",
xmlns = { 
    @javax.xml.bind.annotation.XmlNs(prefix="myns", 
               namespaceURI="http://namespace.mysite.com/")
},
elementFormDefault = javax.xml.bind.annotation.XmlNsForm.UNQUALIFIED
)
package com.core.mymodel;

我的jaxb.properties文件包含以下行：

javax.xml.bind.context.factory=org.eclipse.persistence.jaxb.JAXBContextFactory

我已将eclipselink.jar添加到CLASSPATH，package-info.java和jaxb.properties文件与我的模型类位于同一个包中，但是，当我运行该程序时，我收到以下错误消息：

javax.xml.bind.JAXBException: Provider org.eclipse.persistence.jaxb.JAXBContextFactory        not found
- with linked exception:
[java.lang.ClassNotFoundException: org.eclipse.persistence.jaxb.JAXBContextFactory]
at javax.xml.bind.ContextFinder.newInstance(Unknown Source)
at javax.xml.bind.ContextFinder.find(Unknown Source)
at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
at javax.xml.bind.JAXBContext.newInstance(Unknown Source)

我已经使用EclipseLink版本2.3.0和2.0.2尝试了这一点，但仍然收到相同的错误消息。有没有人碰巧知道可能是什么问题？

非常感谢提前

Answer 1

根据异常消息，您的jaxb.properties文件似乎正确无误：

javax.xml.bind.JAXBException: Provider org.eclipse.persistence.jaxb.JAXBContextFactory        not found
- with linked exception:
[java.lang.ClassNotFoundException: org.eclipse.persistence.jaxb.JAXBContextFactory]
at javax.xml.bind.ContextFinder.newInstance(Unknown Source)
at javax.xml.bind.ContextFinder.find(Unknown Source)
at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
at javax.xml.bind.JAXBContext.newInstance(Unknown Source)
at javax.xml.bind.JAXBContext.newInstance(Unknown Source)

要确认您的类路径中有org.eclipse.persistence.jaxb.JAXBContextFactory，您可以尝试：

JAXBContext jc = JAXBContextFactory.createContext("com.core.mymodel", null);

要进行更基本的确认，您可以运行：

System.out.println(org.eclipse.persistence.Version.getVersion());

了解更多信息

http://bdoughan.blogspot.com/2011/05/specifying-eclipselink-moxy-as-your.html

Answer 2

将其用作系统属性

System.setProperty("javax.xml.bind.JAXBContextFactory", "org.eclipse.persistence.jaxb.JAXBContextFactory");

无法让EclipseLink MOXy工作

2 个答案: