为什么JAXB在Apache Felix中运行时找不到我的jaxb.index？

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JAXBContext jc = JAXBContext.newInstance("my.package.name");

JAXBContext jc = JAXBContext.newInstance(my.package.name.SomeClass.class);

/**
 * Look for jaxb.index file in the specified package and load it's contents
 * @param pkg package name to search in
 * @param classLoader ClassLoader to search in
 * @return a List of Class objects to load, null if there weren't any
 * @throws IOException if there is an error reading the index file
 * @throws JAXBException if there are any errors in the index file
private static List<Class> loadIndexedClasses(String pkg, ClassLoader classLoader) throws IOException, JAXBException {
    final String resource = pkg.replace('.', '/') + "/jaxb.index";
    final InputStream resourceAsStream = classLoader.getResourceAsStream(resource);
    if (resourceAsStream == null) {
        return null;
    }

// ...
thread.setContextClassLoader(ClassLoader.getSystemClassLoader());
thread.start();
// ...

ClassLoader cl = my.package.name.ObjectFactory.class.getClassLoader();
JAXBContext jc = JAXBContext.newInstance("my.package.name", cl);

Bundle A
   -- com.a
      A.java
        aMethod()
            B.bMethod("com.c.C");
MANIFEST.MF
Import-Package: com.b, com.c         
Bundle B
   -- com.b
      B.java
        bmethod(String className)
            Class clazz = Class.forName(className);
Export-Package: com.b
Bundle C
   -- com.c
      C.java
            System.out.println("hello i am C");
Export-Package: com.c

<dependency>
    <groupId>com.sun.xml.bind</groupId>
    <artifactId>jaxb-osgi</artifactId>
    <version>2.2.7</version>
</dependency>

public static <T> T deserializeFile(Class<T> _class, String _xml) {
        try {
            JAXBContext context = JAXBContext.newInstance(new Class[]{_class});
            Unmarshaller um = context.createUnmarshaller();
            File file = new File(_xml);
            Object obj = um.unmarshal(file);
            return _class.cast(obj);
        } catch (JAXBException exc) {
            return null;

为什么JAXB在Apache Felix中运行时找不到我的jaxb.index？

10 个回答