OSGI/Equinox Bundle Resource: URI Scheme is not a file

Question

I have a plugin I'm running in the Equinox container. Within the plugin jar, contains a /bin directory that contains an executable I want to run and the associated shared libraries. I'm trying to get the parent path of the executable (/bin) but am getting the following exception:

    Exception in thread "SpringOsgiExtenderThread-88" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testLauncher' defined in URL [bundleentry://105.fwk10703525/META-INF/spring/service.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.test.TestLauncher]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: URI scheme is not "file"
        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:288)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1003)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:907)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:580)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:895)
        at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.access$1600(AbstractDelegatedExecutionApplicationContext.java:69)
        at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext$4.run(AbstractDelegatedExecutionApplicationContext.java:355)
        at org.springframework.osgi.util.internal.PrivilegedUtils.executeWithCustomTCCL(PrivilegedUtils.java:85)
        at org.springframework.osgi.context.support.AbstractDelegatedExecutionApplicationContext.completeRefresh(AbstractDelegatedExecutionApplicationContext.java:320)
        at org.springframework.osgi.extender.internal.dependencies.startup.DependencyWaiterApplicationContextExecutor$CompleteRefreshTask.run(DependencyWaiterApplicationContextExecutor.java:132)
        at java.lang.Thread.run(Thread.java:619)
Caused by: org.springframework.beans.BeanInstantiationException: Could not instantiate bean class [com.test.TestLauncher]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: URI scheme is not "file"
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:141)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:108)
        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:280)
        ... 16 more
Caused by: java.lang.IllegalArgumentException: URI scheme is not "file"
        at java.io.File.<init>(File.java:366)
        at com.test.TestLauncher.<init>(TestLauncher.java:23)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
        at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:126)
        ... 18 more

The code below shows my constructor trying to get the parent path (/bin) of the Resource variable. The exception is being thrown at the new File(binPath.getURI()) command. The resource variable is passed in using the spring context definition below.

public Launcher(Resource resource) {
    try {
        binFile = resource.getURL().getFile();            
        String binPath = new File(binPath.getURI()).getParentFile().getAbsolutePath();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        System.out.println("TestLauncher Exception found");
        e.printStackTrace();
    }
}

Spring Context Definition:

<bean id="testResource" class="org.springframework.core.io.ClassPathResource">  
    <constructor-arg value="\bin\test" />
</bean>

score 0 · Answer 1 · answered Mar 20 '13 at 00:29

I think all you need to do is to supply the path value as a file uri, eg:

<bean id="testResource" class="org.springframework.core.io.ClassPathResource">  
  <constructor-arg value="file:../test" />
</bean>

Here, I'm just guessing at the path you'll need, based on what I think is your classpath. You may need to experiment with different path values to get this to work.

Good luck!

OSGI/Equinox Bundle Resource: URI Scheme is not a file

1 Answers1