import net.sf.cglib.core.CodeGenerationException; //导入依赖的package包/类
public static Object replaceCOWithProxy(Class<?> className, Object[] parameters, Class<?>[] parameterTypes) throws Throwable {
	
	Enhancer enhancer = new Enhancer();
	enhancer.setCallback(new JCloudScaleCloudObjectHandler());
	enhancer.setSuperclass(className);
	
	try {
		if(parameters != null && parameterTypes.length > 0)
			return enhancer.create(parameterTypes, parameters);
		else
			return enhancer.create();
	} catch(CodeGenerationException e) {
		// we are not particularly interested in the CodeGenerationException, more in what caused it
		if(e.getCause() != null)
			throw e.getCause();
		else
			throw e;
	}
}
 

import net.sf.cglib.core.CodeGenerationException; //导入依赖的package包/类
private Class<?> proxyClass(Class<?> possibleMockedType, Class<?>... ancilliaryTypes) {
    final Class<?> mockedType =
        possibleMockedType == Object.class ? ClassWithSuperclassToWorkAroundCglibBug.class : possibleMockedType;
    
    final Enhancer enhancer = new Enhancer() {
        @Override
        @SuppressWarnings("unchecked")
        protected void filterConstructors(Class sc, List constructors) {
            // Don't filter
        }
    };
    enhancer.setClassLoader(SearchingClassLoader.combineLoadersOf(mockedType, ancilliaryTypes));
    enhancer.setUseFactory(true);
    if (mockedType.isInterface()) {
        enhancer.setSuperclass(Object.class);
        enhancer.setInterfaces(prepend(mockedType, ancilliaryTypes));
    }
    else {
        enhancer.setSuperclass(mockedType);
        enhancer.setInterfaces(ancilliaryTypes);
    }
    enhancer.setCallbackTypes(new Class[]{InvocationHandler.class, NoOp.class});
    enhancer.setCallbackFilter(IGNORED_METHODS);
    if (mockedType.getSigners() != null) {
        enhancer.setNamingPolicy(NAMING_POLICY_THAT_ALLOWS_IMPOSTERISATION_OF_CLASSES_IN_SIGNED_PACKAGES);
    }
    
    try {
        return enhancer.createClass();
    }
    catch (CodeGenerationException e) {
        // Note: I've only been able to manually test this.  It exists to help people writing
        //       Eclipse plug-ins or using other environments that have sophisticated class loader
        //       structures.
        throw new IllegalArgumentException("could not imposterise " + mockedType, e);
    }
}
 

import net.sf.cglib.core.CodeGenerationException; //导入依赖的package包/类
@Test
public void cannot_proxy_package_private_interfaces() {
  try {
    proxer.proxy(typing(PackagePrivate.interfaceClass), handler);
    fail();
  } catch (CodeGenerationException e) {}
}