错误堆栈信息：
Exception in thread "main" java.lang.NoClassDefFoundError: org/objectweb/asm/Type at net.sf.cglib.core.TypeUtils.parseType(TypeUtils.java:184) at net.sf.cglib.core.KeyFactory.<clinit>(KeyFactory.java:66) at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69) at com.xxxx.model.proxy.cglib.CglibProxy.getProxy(CglibProxy.java:14) at com.xxxx.model.proxy.cglib.TestProxy.main(TestProxy.java:11) Caused by: java.lang.ClassNotFoundException: org.objectweb.asm.Type at java.net.URLClassLoader$1.run(URLClassLoader.java:372) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:360) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 5 more
通过网上查询，发现是由于缺少jar包导致，引入了asm4.1.jar，又出现新的错误信息。
异常堆栈信息如下：
Exception in thread "main" java.lang.VerifyError: class net.sf.cglib.core.DebuggingClassWriter overrides final method visit.(IILjava/lang/String;Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;)V at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:760) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) at java.net.URLClassLoader.defineClass(URLClassLoader.java:455) at java.net.URLClassLoader.access$100(URLClassLoader.java:73) at java.net.URLClassLoader$1.run(URLClassLoader.java:367) at java.net.URLClassLoader$1.run(URLClassLoader.java:361) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:360) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at net.sf.cglib.core.AbstractClassGenerator.<init>(AbstractClassGenerator.java:38) at net.sf.cglib.core.KeyFactory$Generator.<init>(KeyFactory.java:127) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:112) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:108) at net.sf.cglib.core.KeyFactory.create(KeyFactory.java:104) at net.sf.cglib.proxy.Enhancer.<clinit>(Enhancer.java:69) at com.xxxx.model.proxy.cglib.CglibProxy.getProxy(CglibProxy.java:14) at com.xxxx.model.proxy.cglib.TestProxy.main(TestProxy.java:11)
问题原因是由于版本不配套导致，将asm.jar改用3.3.1版本，问题得到解决。