CGLib动态代理测试不通过-Unable to load cache item?报错

基本类：

public class HelloWorld{

	public void sayHello(String name) {
		System.err.println(name+":Hello World~");
	}

}

public class Proxy_CGLib implements MethodInterceptor{

	private Object target;
	
	public Object getInstance(Object target){
		this.target=target;
		Enhancer enhancer =new Enhancer();
		enhancer.setSuperclass(this.target.getClass());
		enhancer.setCallback(this);
		return enhancer.create();
	}
	@Override
	//回调方法
	public Object intercept(Object obj, Method method, Object[] args,
			MethodProxy methodProxy) throws Throwable {
		Object returnObj = methodProxy.invokeSuper(obj, args);
		return returnObj;
	}

}

public class CGLibTest {
	public static void main(String[] args) {
		Proxy_CGLib cglib=new Proxy_CGLib();
		HelloWorld helloService =(HelloWorld) cglib.getInstance(new HelloWorld());
		helloService.sayHello("yw");
	}
}

报错信息：

Exception in thread "main" java.lang.ExceptionInInitializerError
	at com.yan.cglib.Proxy_CGLib.getInstance(Proxy_CGLib.java:15)
	at com.yan.cglib.CGLibTest.main(CGLibTest.java:6)
Caused by: java.lang.IllegalStateException: Unable to load cache item
	at net.sf.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:79)
	at net.sf.cglib.core.internal.LoadingCache.get(LoadingCache.java:34)
	at net.sf.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:116)
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:291)
	at net.sf.cglib.core.KeyFactory$Generator.create(KeyFactory.java:221)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:174)
	at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:153)
	at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:73)
	... 2 more
Caused by: java.lang.IncompatibleClassChangeError: class net.sf.cglib.core.DebuggingClassWriter has interface org.objectweb.asm.ClassVisitor as super class
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
	at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
	at net.sf.cglib.core.DefaultGeneratorStrategy.getClassVisitor(DefaultGeneratorStrategy.java:30)
	at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:24)
	at net.sf.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:329)
	at net.sf.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:93)
	at net.sf.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:91)
	at net.sf.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54)
	at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
	at java.util.concurrent.FutureTask.run(FutureTask.java:138)
	at net.sf.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61)
	... 9 more

使用的jar包：

asm-3.3.1.jar

请问问题出在哪？