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分享CGLib动态代理测试不通过-Unable to load cache item
基本类：
public class HelloWorld{
public void sayHello(String name) {
System.err.println(name+":Hello World~");
}
}
代理类：
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;
}
}
测试：
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： cglib-3.2.4.jar
asm-3.3.1.jar
请问问题出在哪？
...全文
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weixin_38099114 2017-09-01
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我也遇到这个问题了 请问你解决没 怎么解决的
