一、前言

通过spring-aop构建包提供的org.springframework.aop.support.AopUtils可以获取的Spring Bean注入的对象实例转为对于的Class类对象（Class<?> beanClazz=AopUtils.getTargetClass(bean);）、代理类的判定（Proxy.isProxyClass、ClassUtils.isCglibProxyClass及SpringProxy)）等面向aop编程常用公共方法。

二、代码

package org.springframework.aop.support;@b@@b@import java.lang.reflect.InvocationTargetException;@b@import java.lang.reflect.Method;@b@import java.lang.reflect.Proxy;@b@import java.util.Iterator;@b@import java.util.LinkedHashSet;@b@import java.util.LinkedList;@b@import java.util.List;@b@import java.util.Set;@b@import org.springframework.aop.Advisor;@b@import org.springframework.aop.AopInvocationException;@b@import org.springframework.aop.ClassFilter;@b@import org.springframework.aop.IntroductionAdvisor;@b@import org.springframework.aop.IntroductionAwareMethodMatcher;@b@import org.springframework.aop.MethodMatcher;@b@import org.springframework.aop.Pointcut;@b@import org.springframework.aop.PointcutAdvisor;@b@import org.springframework.aop.SpringProxy;@b@import org.springframework.aop.TargetClassAware;@b@import org.springframework.core.BridgeMethodResolver;@b@import org.springframework.util.Assert;@b@import org.springframework.util.ClassUtils;@b@import org.springframework.util.ReflectionUtils;@b@@b@public abstract class AopUtils@b@{@b@  public static boolean isAopProxy(Object object)@b@  {@b@    return ((object instanceof SpringProxy) && ((@b@      (Proxy.isProxyClass(object@b@      .getClass())) || (ClassUtils.isCglibProxyClass(object.getClass())))));@b@  }@b@@b@  public static boolean isJdkDynamicProxy(Object object)@b@  {@b@    return ((object instanceof SpringProxy) && (Proxy.isProxyClass(object.getClass())));@b@  }@b@@b@  public static boolean isCglibProxy(Object object)@b@  {@b@    return ((object instanceof SpringProxy) && (ClassUtils.isCglibProxy(object)));@b@  }@b@@b@  @Deprecated@b@  public static boolean isCglibProxyClass(Class<?> clazz)@b@  {@b@    return ClassUtils.isCglibProxyClass(clazz);@b@  }@b@@b@  @Deprecated@b@  public static boolean isCglibProxyClassName(String className)@b@  {@b@    return ClassUtils.isCglibProxyClassName(className);@b@  }@b@@b@  public static Class<?> getTargetClass(Object candidate)@b@  {@b@    Assert.notNull(candidate, "Candidate object must not be null");@b@    Class result = null;@b@    if (candidate instanceof TargetClassAware)@b@      result = ((TargetClassAware)candidate).getTargetClass();@b@@b@    if (result == null)@b@      result = (isCglibProxy(candidate)) ? candidate.getClass().getSuperclass() : candidate.getClass();@b@@b@    return result;@b@  }@b@@b@  public static boolean isEqualsMethod(Method method)@b@  {@b@    return ReflectionUtils.isEqualsMethod(method);@b@  }@b@@b@  public static boolean isHashCodeMethod(Method method)@b@  {@b@    return ReflectionUtils.isHashCodeMethod(method);@b@  }@b@@b@  public static boolean isToStringMethod(Method method)@b@  {@b@    return ReflectionUtils.isToStringMethod(method);@b@  }@b@@b@  public static boolean isFinalizeMethod(Method method)@b@  {@b@    return ((method != null) && (method.getName().equals("finalize")) && @b@      (method@b@      .getParameterTypes().length == 0));@b@  }@b@@b@  public static Method getMostSpecificMethod(Method method, Class<?> targetClass)@b@  {@b@    Method resolvedMethod = ClassUtils.getMostSpecificMethod(method, targetClass);@b@@b@    return BridgeMethodResolver.findBridgedMethod(resolvedMethod);@b@  }@b@@b@  public static boolean canApply(Pointcut pc, Class<?> targetClass)@b@  {@b@    return canApply(pc, targetClass, false);@b@  }@b@@b@  public static boolean canApply(Pointcut pc, Class<?> targetClass, boolean hasIntroductions)@b@  {@b@    Method[] arrayOfMethod1;@b@    int j;@b@    Assert.notNull(pc, "Pointcut must not be null");@b@    if (!(pc.getClassFilter().matches(targetClass))) {@b@      return false;@b@    }@b@@b@    MethodMatcher methodMatcher = pc.getMethodMatcher();@b@    IntroductionAwareMethodMatcher introductionAwareMethodMatcher = null;@b@    if (methodMatcher instanceof IntroductionAwareMethodMatcher) {@b@      introductionAwareMethodMatcher = (IntroductionAwareMethodMatcher)methodMatcher;@b@    }@b@@b@    Set classes = new LinkedHashSet(ClassUtils.getAllInterfacesForClassAsSet(targetClass));@b@    classes.add(targetClass);@b@    for (Class clazz : classes) {@b@      Method[] methods = clazz.getMethods();@b@      arrayOfMethod1 = methods; int i = arrayOfMethod1.length; for (j = 0; j < i; ++j) { Method method = arrayOfMethod1[j];@b@        if (((introductionAwareMethodMatcher != null) && @b@          (introductionAwareMethodMatcher@b@          .matches(method, targetClass, hasIntroductions))) || @b@          (methodMatcher@b@          .matches(method, targetClass)))@b@        {@b@          return true;@b@        }@b@      }@b@    }@b@@b@    return false;@b@  }@b@@b@  public static boolean canApply(Advisor advisor, Class<?> targetClass)@b@  {@b@    return canApply(advisor, targetClass, false);@b@  }@b@@b@  public static boolean canApply(Advisor advisor, Class<?> targetClass, boolean hasIntroductions)@b@  {@b@    if (advisor instanceof IntroductionAdvisor)@b@      return ((IntroductionAdvisor)advisor).getClassFilter().matches(targetClass);@b@@b@    if (advisor instanceof PointcutAdvisor) {@b@      PointcutAdvisor pca = (PointcutAdvisor)advisor;@b@      return canApply(pca.getPointcut(), targetClass, hasIntroductions);@b@    }@b@@b@    return true;@b@  }@b@@b@  public static List<Advisor> findAdvisorsThatCanApply(List<Advisor> candidateAdvisors, Class<?> clazz)@b@  {@b@    boolean bool1;@b@    if (candidateAdvisors.isEmpty())@b@      return candidateAdvisors;@b@@b@    List eligibleAdvisors = new LinkedList();@b@    for (Iterator localIterator = candidateAdvisors.iterator(); localIterator.hasNext(); ) { candidate = (Advisor)localIterator.next();@b@      if ((candidate instanceof IntroductionAdvisor) && (canApply(candidate, clazz)))@b@        eligibleAdvisors.add(candidate);@b@    }@b@@b@    boolean bool1 = !(eligibleAdvisors.isEmpty());@b@    Advisor candidate = candidateAdvisors.iterator();@b@    while (true) { Advisor candidate;@b@      while (true) { if (!(candidate.hasNext())) break label153; candidate = (Advisor)candidate.next();@b@        if (!(candidate instanceof IntroductionAdvisor))@b@          break;@b@      }@b@@b@      if (canApply(candidate, clazz, bool1))@b@        eligibleAdvisors.add(candidate);@b@    }@b@@b@    label153: return eligibleAdvisors;@b@  }@b@@b@  public static Object invokeJoinpointUsingReflection(Object target, Method method, Object[] args)@b@    throws Throwable@b@  {@b@    try@b@    {@b@      ReflectionUtils.makeAccessible(method);@b@      return method.invoke(target, args);@b@    }@b@    catch (InvocationTargetException ex)@b@    {@b@      throw ex.getTargetException();@b@    }@b@    catch (IllegalArgumentException ex) {@b@      throw new AopInvocationException("AOP configuration seems to be invalid: tried calling method [" + method + "] on target [" + target + "]", ex);@b@    }@b@    catch (IllegalAccessException ex)@b@    {@b@      throw new AopInvocationException("Could not access method [" + method + "]", ex);@b@    }@b@  }@b@}