ProxyHelper requires cglib even if interface is used as client service class
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Key: CXF-2180
URL: https://issues.apache.org/jira/browse/CXF-2180
Project: CXF
Issue Type: Bug
Components: Core, REST
Affects Versions: 2.2
Reporter: Holger Delfs
When using a JAX-RS proxy client with the spring bean
<jaxrs:client id="subscriberService" serviceClass="sample.SubscriberService"
address="http://localhost:8080/services/";>
</jaxrs:client>
where sample.SubscriberService is an interface, I would expect, that I don't
need cglib in my classpath. Instead I get
org.springframework.beans.factory.BeanCreationException with the following root
cause:
Caused by: java.lang.NoClassDefFoundError: net/sf/cglib/proxy/Callback
at org.apache.cxf.common.util.ProxyHelper.<clinit>(ProxyHelper.java:33)
at
org.apache.cxf.jaxrs.client.JAXRSClientFactoryBean.createWithValues(JAXRSClientFactoryBean.java:134)
at
org.apache.cxf.jaxrs.client.JAXRSClientFactoryBean.create(JAXRSClientFactoryBean.java:119)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:115)
... 18 more
Caused by: java.lang.ClassNotFoundException: net.sf.cglib.proxy.Callback
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
... 26 more
which I can only fix by including cglib in my Maven dependencies.
The catch block in the static initializer of ProxyHelper lets me assume, that
the usage of cglib features was intended to be optional. But if cglib.jar is
not available, the class loading of CglibProxyHelper causes the error above.
I suggest to either catch Throwable when calling CglibProxyHelper, or to avoid
the class loading dependency on cglib classes within CglibProxyHelper.
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