⑴ spring的aop在方法执行后怎么得到该方法的参数
afterReturning重写方法里面就把方法的参数，当作形参传递给arg2了
public class After implements AfterReturningAdvice{
@Override
public void afterReturning(Object arg0, Method arg1, Object[] arg2,
Object arg3) throws Throwable {
}
}