最近项目的jdk切换1.8以后出现个问题，就是Duang带泛型签名的class时，报如下异常。

Exception in thread "main" java.lang.IllegalArgumentException

at net.sf.cglib.asm.ClassReader.<init>(Unknown Source)

at net.sf.cglib.asm.ClassReader.<init>(Unknown Source)

at net.sf.cglib.asm.ClassReader.<init>(Unknown Source)

at net.sf.cglib.proxy.BridgeMethodResolver.resolveAll(BridgeMethodResolver.java:61)

at net.sf.cglib.proxy.Enhancer.emitMethods(Enhancer.java:911)

at net.sf.cglib.proxy.Enhancer.generateClass(Enhancer.java:498)

at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)

at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)

at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)

at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:285)

at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:663)

at com.jfinal.aop.Enhancer.enhance(Enhancer.java:32)

at com.jfinal.aop.Duang.duang(Duang.java:27)

at 

升级cglib-nodep到3.2以后问题解决。具体原因未查到，我去看了cglib的不过列表。好像跟https://github.com/cglib/cglib/issues/59这个bug有关，en水平欠佳，没弄清楚具体问题。