7.CGLIB动态代理源码之代理类对象的调用详解

Emanon
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CGLIB代理类对象的调用过程详解

以代理类对象的add方法为例,讲一下CGLIB代理类对象的调用过程。

被代理类:Calculator

代理类:Calculator$$EnhancerByCGLIB$$b514f2c0

被代理类的FastClass:Calculator$$FastClassByCGLIB$$660dfb8f

代理类的FasClass:Calculator$$EnhancerByCGLIB$$b514f2c0$$FastClassByCGLIB$$ec726d06

之前在生成代理类的时候有1个命名规则:类前缀 + $$ + source + ByCGLIB + $$ + hashCode

比如类名是Student,给Studeng生成代理类的类名是Enhance,那么生成的代理类的类名就是类似这种

Studeng$$EnhancerByCGLIB$$a323h1ck0

代理类源码

package cglib;

import java.lang.reflect.Method;
import org.springframework.cglib.core.ReflectUtils;
import org.springframework.cglib.core.Signature;
import org.springframework.cglib.proxy.Callback;
import org.springframework.cglib.proxy.Factory;
import org.springframework.cglib.proxy.MethodInterceptor;
import org.springframework.cglib.proxy.MethodProxy;

public class Calculator$$EnhancerByCGLIB$$b514f2c0 extends Calculator implements Factory {
    private boolean CGLIB$BOUND;
    public static Object CGLIB$FACTORY_DATA;
    private static final ThreadLocal CGLIB$THREAD_CALLBACKS;
    private static final Callback[] CGLIB$STATIC_CALLBACKS;
    private MethodInterceptor CGLIB$CALLBACK_0;
    private static Object CGLIB$CALLBACK_FILTER;
    private static final Method CGLIB$add$0$Method;
    private static final MethodProxy CGLIB$add$0$Proxy;
    private static final Object[] CGLIB$emptyArgs;
    private static final Method CGLIB$equals$1$Method;
    private static final MethodProxy CGLIB$equals$1$Proxy;
    private static final Method CGLIB$toString$2$Method;
    private static final MethodProxy CGLIB$toString$2$Proxy;
    private static final Method CGLIB$hashCode$3$Method;
    private static final MethodProxy CGLIB$hashCode$3$Proxy;
    private static final Method CGLIB$clone$4$Method;
    private static final MethodProxy CGLIB$clone$4$Proxy;

    static void CGLIB$STATICHOOK1() {
        CGLIB$THREAD_CALLBACKS = new ThreadLocal();
        CGLIB$emptyArgs = new Object[0];
        Class var0 = Class.forName("cglib.Calculator$$EnhancerByCGLIB$$b514f2c0");
        Class var1;
        Method[] var10000 = ReflectUtils.findMethods(new String[]{"equals", "(Ljava/lang/Object;)Z", "toString", "()Ljava/lang/String;", "hashCode", "()I", "clone", "()Ljava/lang/Object;"}, (var1 = Class.forName("java.lang.Object")).getDeclaredMethods());
        CGLIB$equals$1$Method = var10000[0];
        CGLIB$equals$1$Proxy = MethodProxy.create(var1, var0, "(Ljava/lang/Object;)Z", "equals", "CGLIB$equals$1");
        CGLIB$toString$2$Method = var10000[1];
        CGLIB$toString$2$Proxy = MethodProxy.create(var1, var0, "()Ljava/lang/String;", "toString", "CGLIB$toString$2");
        CGLIB$hashCode$3$Method = var10000[2];
        CGLIB$hashCode$3$Proxy = MethodProxy.create(var1, var0, "()I", "hashCode", "CGLIB$hashCode$3");
        CGLIB$clone$4$Method = var10000[3];
        CGLIB$clone$4$Proxy = MethodProxy.create(var1, var0, "()Ljava/lang/Object;", "clone", "CGLIB$clone$4");
        CGLIB$add$0$Method = ReflectUtils.findMethods(new String[]{"add", "(II)I"}, 
                                                      (var1 = Class.forName("cglib.Calculator")).getDeclaredMethods())[0];
        CGLIB$add$0$Proxy = MethodProxy.create(var1, var0, "(II)I", "add", "CGLIB$add$0");
    }

    final int CGLIB$add$0(int var1, int var2) {
        return super.add(var1, var2);
    }

    public final int add(int var1, int var2) {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        if (var10000 != null) {
            Object var3 = var10000.intercept(this, CGLIB$add$0$Method, new Object[]{new Integer(var1), new Integer(var2)}, CGLIB$add$0$Proxy);
            return var3 == null ? 0 : ((Number)var3).intValue();
        } else {
            return super.add(var1, var2);
        }
    }

    final boolean CGLIB$equals$1(Object var1) {
        return super.equals(var1);
    }

    public final boolean equals(Object var1) {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        if (var10000 != null) {
            Object var2 = var10000.intercept(this, CGLIB$equals$1$Method, new Object[]{var1}, CGLIB$equals$1$Proxy);
            return var2 == null ? false : (Boolean)var2;
        } else {
            return super.equals(var1);
        }
    }

    final String CGLIB$toString$2() {
        return super.toString();
    }

    public final String toString() {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        return var10000 != null ? (String)var10000.intercept(this, CGLIB$toString$2$Method, CGLIB$emptyArgs, CGLIB$toString$2$Proxy) : super.toString();
    }

    final int CGLIB$hashCode$3() {
        return super.hashCode();
    }

    public final int hashCode() {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        if (var10000 != null) {
            Object var1 = var10000.intercept(this, CGLIB$hashCode$3$Method, CGLIB$emptyArgs, CGLIB$hashCode$3$Proxy);
            return var1 == null ? 0 : ((Number)var1).intValue();
        } else {
            return super.hashCode();
        }
    }

    final Object CGLIB$clone$4() throws CloneNotSupportedException {
        return super.clone();
    }

    protected final Object clone() throws CloneNotSupportedException {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        return var10000 != null ? var10000.intercept(this, CGLIB$clone$4$Method, CGLIB$emptyArgs, CGLIB$clone$4$Proxy) : super.clone();
    }

    public static MethodProxy CGLIB$findMethodProxy(Signature var0) {
        String var10000 = var0.toString();
        switch(var10000.hashCode()) {
        case -1287932281:
            if (var10000.equals("add(II)I")) {
                return CGLIB$add$0$Proxy;
            }
            break;
        case -508378822:
            if (var10000.equals("clone()Ljava/lang/Object;")) {
                return CGLIB$clone$4$Proxy;
            }
            break;
        case 1826985398:
            if (var10000.equals("equals(Ljava/lang/Object;)Z")) {
                return CGLIB$equals$1$Proxy;
            }
            break;
        case 1913648695:
            if (var10000.equals("toString()Ljava/lang/String;")) {
                return CGLIB$toString$2$Proxy;
            }
            break;
        case 1984935277:
            if (var10000.equals("hashCode()I")) {
                return CGLIB$hashCode$3$Proxy;
            }
        }

        return null;
    }

    public Calculator$$EnhancerByCGLIB$$b514f2c0() {
        CGLIB$BIND_CALLBACKS(this);
    }

    public static void CGLIB$SET_THREAD_CALLBACKS(Callback[] var0) {
        CGLIB$THREAD_CALLBACKS.set(var0);
    }

    public static void CGLIB$SET_STATIC_CALLBACKS(Callback[] var0) {
        CGLIB$STATIC_CALLBACKS = var0;
    }

    private static final void CGLIB$BIND_CALLBACKS(Object var0) {
        Calculator$$EnhancerByCGLIB$$b514f2c0 var1 = (Calculator$$EnhancerByCGLIB$$b514f2c0)var0;
        if (!var1.CGLIB$BOUND) {
            var1.CGLIB$BOUND = true;
            Object var10000 = CGLIB$THREAD_CALLBACKS.get();
            if (var10000 == null) {
                var10000 = CGLIB$STATIC_CALLBACKS;
                if (var10000 == null) {
                    return;
                }
            }

            var1.CGLIB$CALLBACK_0 = (MethodInterceptor)((Callback[])var10000)[0];
        }

    }

    public Object newInstance(Callback[] var1) {
        CGLIB$SET_THREAD_CALLBACKS(var1);
        Calculator$$EnhancerByCGLIB$$b514f2c0 var10000 = new Calculator$$EnhancerByCGLIB$$b514f2c0();
        CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
        return var10000;
    }

    public Object newInstance(Callback var1) {
        CGLIB$SET_THREAD_CALLBACKS(new Callback[]{var1});
        Calculator$$EnhancerByCGLIB$$b514f2c0 var10000 = new Calculator$$EnhancerByCGLIB$$b514f2c0();
        CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
        return var10000;
    }

    public Object newInstance(Class[] var1, Object[] var2, Callback[] var3) {
        CGLIB$SET_THREAD_CALLBACKS(var3);
        Calculator$$EnhancerByCGLIB$$b514f2c0 var10000 = new Calculator$$EnhancerByCGLIB$$b514f2c0;
        switch(var1.length) {
        case 0:
            var10000.<init>();
            CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
            return var10000;
        default:
            throw new IllegalArgumentException("Constructor not found");
        }
    }

    public Callback getCallback(int var1) {
        CGLIB$BIND_CALLBACKS(this);
        MethodInterceptor var10000;
        switch(var1) {
        case 0:
            var10000 = this.CGLIB$CALLBACK_0;
            break;
        default:
            var10000 = null;
        }

        return var10000;
    }

    public void setCallback(int var1, Callback var2) {
        switch(var1) {
        case 0:
            this.CGLIB$CALLBACK_0 = (MethodInterceptor)var2;
        default:
        }
    }

    public Callback[] getCallbacks() {
        CGLIB$BIND_CALLBACKS(this);
        return new Callback[]{this.CGLIB$CALLBACK_0};
    }

    public void setCallbacks(Callback[] var1) {
        this.CGLIB$CALLBACK_0 = (MethodInterceptor)var1[0];
    }

    static {
        CGLIB$STATICHOOK1();
    }
}

当我们执行到下面这行代码calculator.add(1, 1);会进入代理类的add方法


import org.springframework.cglib.core.DebuggingClassWriter;
import org.springframework.cglib.core.KeyFactory;
import org.springframework.cglib.core.MethodWrapper;
import org.springframework.cglib.proxy.Enhancer;

import java.lang.reflect.Method;

/***
 * @author: claude
 * @date: 2023/3/3
 * @description:
 */
public class CalculatorProxyFactory {
    public static void main(String[] args) {
        //动态代理创建的class文件存储到本地
        System.setProperty(DebuggingClassWriter.DEBUG_LOCATION_PROPERTY, "e:\\proxy");
        //通过cglib动态代理获取代理对象的过程，创建调用的对象
        Enhancer enhancer = new Enhancer();
        //设置enhancer对象的父类
        enhancer.setSuperclass(Calculator.class);
        //设置enhancer的回调对象
        enhancer.setCallback(new CalculatorMethodInterceptor(new Calculator()));
        //创建代理对象
        Calculator calculator = (Calculator) enhancer.create();
        //通过代理对象调用目标方法
        calculator.add(1, 1);
    }
}

代理类的add方法

 public final int add(int var1, int var2) {
     	//this.CGLIB$CALLBACK_0;就是我们的CalculatorMethodInterceptor
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        if (var10000 != null) {
            /*
            执行CalculatorMethodInterceptor#intercept
            此方法用来实现方法的拦截,四个参数分别表示的含义：
            obj:cglib生成的代理对象实例
            method： 被代理对象的原始add方法
            args：被代理对象的原始add方法入参
            proxy:被代理对象的原始add方法对应的MethodProxy
            */
            Object var3 = var10000.intercept
                			(this, CGLIB$add$0$Method, new Object[]{new Integer(var1), new Integer(var2)}, CGLIB$add$0$Proxy);
            return var3 == null ? 0 : ((Number)var3).intValue();
        } else {
            return super.add(var1, var2);
        }
    }

CalculatorMethodInterceptor#intercept

package cglib;

import com.sun.org.apache.bcel.internal.generic.Type;
import org.springframework.cglib.core.Signature;
import org.springframework.cglib.proxy.MethodInterceptor;
import org.springframework.cglib.proxy.MethodProxy;
import org.springframework.cglib.reflect.FastClass;

import java.lang.reflect.Method;
public class CalculatorMethodInterceptor implements MethodInterceptor {

    private Calculator target;

    public CalculatorMethodInterceptor(Calculator target) {
        this.target = target;
    }
   /*
    此方法用来实现方法的拦截,四个参数分别表示的含义：
    obj:cglib生成的代理对象实例
    method： 被代理对象的原始add方法
    args：被代理对象的原始add方法入参
    proxy:被代理对象的原始add方法对应的MethodProxy
    */
    @Override
    public Object intercept(Object proxy, Method method, Object[] args, MethodProxy methodProxy) throws Throwable {
 		Object result = methodProxy.invokeSuper(proxy, args);
        System.out.println("计算结果:" + result);
        return result;
    }
}

MethodProxy#invokeSuper

public Object invokeSuper(Object obj, Object[] args) throws Throwable {
		try {
            //1.获取代理类和被代理类的Fastclass
            //2.获取要调用的方法的在2个Fastclass中的下标
			init();
			FastClassInfo fci = fastClassInfo;
            //代理类的invoke方法
            //fci.f2:生成的代理类的Fastclass
            //fci.i2:生成的代理类的Fastclass中的方法的下标
			return fci.f2.invoke(fci.i2, obj, args);
		}
		catch (InvocationTargetException e) {
			throw e.getTargetException();
		}
	}

先看下什么是MethodProxy?

在生成的代理类中会为每个被代理类的方法创建1个MethodProxy,创建MethodProxy的方法就是create方法。

MethodProxy封装了方法名和签名以及CreateInfo。

public static MethodProxy create(Class c1, Class c2, String desc, String name1, String name2) {
		MethodProxy proxy = new MethodProxy();
		proxy.sig1 = new Signature(name1, desc);
		proxy.sig2 = new Signature(name2, desc);
		proxy.createInfo = new CreateInfo(c1, c2);
		return proxy;
	}

CreateInfo封装了代理类和被代理类的class

public CreateInfo(Class c1, Class c2) {
			this.c1 = c1;
			this.c2 = c2;
			AbstractClassGenerator fromEnhancer = AbstractClassGenerator.getCurrent();
			if (fromEnhancer != null) {
				namingPolicy = fromEnhancer.getNamingPolicy();
				strategy = fromEnhancer.getStrategy();
				attemptLoad = fromEnhancer.getAttemptLoad();
			}
		}

综上所述MethodProxy封装了方法名和签名以及代理类和被代理类的class。

MethodProxy#init

接着继续往下看init方法,主要是生成fastClassInfo。

private void init() {
		if (fastClassInfo == null) {
			synchronized (initLock) {
				if (fastClassInfo == null) {
                    //createInfo里封装了代理类和被代理类的class 
					CreateInfo ci = createInfo;
					FastClassInfo fci = new FastClassInfo();
                    //f1:被代理类的Fastclass
					fci.f1 = helper(ci, ci.c1);
                    //f2:生成的代理类的Fastclass
					fci.f2 = helper(ci, ci.c2);
                    //i1:被代理类的Fastclass中的下标 sig1 = add,(II)I
					fci.i1 = fci.f1.getIndex(sig1);
                    //i2:生成的代理类的Fastclass中的下标 sig2 = CGLIB$add$0,(II)I
					fci.i2 = fci.f2.getIndex(sig2);
					fastClassInfo = fci;
					createInfo = null;
				}
			}
		}
	}

第一步:生成被代理类的Fastclass和代理类的Fastclass。

和之前生成EnhanceKey以及代理类Calculator以及MethodWrapper.MethodWrapperKey并没有什么不同。

唯一不同的是这里用的ClassGenerator是FastClass.Generator。

private static FastClass helper(CreateInfo ci, Class type) {
		FastClass.Generator g = new FastClass.Generator();
		g.setType(type);
		// SPRING PATCH BEGIN
		g.setContextClass(type);
		// SPRING PATCH END
		g.setClassLoader(ci.c2.getClassLoader());
		g.setNamingPolicy(ci.namingPolicy);
		g.setStrategy(ci.strategy);
		g.setAttemptLoad(ci.attemptLoad);
		return g.create();
	}

第二步:获取被代理类的Fastclass中add方法的下标和代理类的Fastclass中的add方法下标

//被代理类的Fastclass中的下标 0
 public int getIndex(Signature var1) {
        String var10000 = var1.toString();
        switch(var10000.hashCode()) {
        case -1287932281:
            if (var10000.equals("add(II)I")) {
                return 0;
            }
      }
 }                
//生成的代理类的Fastclass中的下标 18
public int getIndex(Signature var1) {
        String var10000 = var1.toString();
        switch(var10000.hashCode()) {
  
        case -1287932281:
            if (var10000.equals("add(II)I")) {
                return 19;
            }
        }
  }

第三步:将代理类和被代理类的FastClass以及代理类和被代理类的add方法的下标封装到FastClassInfo

private static class FastClassInfo {

   		//被代理类FastClass
		FastClass f1;
    	//代理类FastClass
		FastClass f2;
    	//被代理类FastClass中add方法的下标
		int i1;
    	//代理类FastClass中add方法的下标
		int i2;
	}

FastClass#invoke

接下来执行的代码是MethodProxy#invokeSuper中的

//fci.f2是代理类FastClass
//fci.i2是代理类FastClass中add方法的下标18
return fci.f2.invoke(fci.i2, obj, args);

也就是调用的是代理类的Fastclass的invoke方法,源码如下


package cglib;
import cglib.Calculator..EnhancerByCGLIB..b514f2c0;
import java.lang.reflect.InvocationTargetException;
import org.springframework.cglib.core.Signature;
import org.springframework.cglib.proxy.Callback;
import org.springframework.cglib.reflect.FastClass;

public class Calculator$$EnhancerByCGLIB$$b514f2c0$$FastClassByCGLIB$$ec726d06 extends FastClass {
    public Calculator$$EnhancerByCGLIB$$b514f2c0$$FastClassByCGLIB$$ec726d06(Class var1) {
        super(var1);
    }

/*
var1=18
var2=cglib.Calculator$$EnhancerByCGLIB$$b514f2c0@57fffcd7
var3= {Object[2]@709} 
参数1:方法下标
参数2:代理类对象
参数3:参数数组
*/ 
public Object invoke(int var1, Object var2, Object[] var3) throws InvocationTargetException {
    	//将代理类对象赋值给var10000
        b514f2c0 var10000 = (b514f2c0)var2;
        int var10001 = var1;

        try {
            switch(var10001) {
            case 0:
                return new Integer(var10000.add(((Number)var3[0]).intValue(), ((Number)var3[1]).intValue()));
            case 1:
                return new Boolean(var10000.equals(var3[0]));
            case 2:
                return var10000.toString();
            case 3:
                return new Integer(var10000.hashCode());
            case 4:
                return var10000.clone();
            case 5:
                return var10000.newInstance((Callback[])var3[0]);
            case 6:
                return var10000.newInstance((Class[])var3[0], (Object[])var3[1], (Callback[])var3[2]);
            case 7:
                return var10000.newInstance((Callback)var3[0]);
            case 8:
                var10000.setCallbacks((Callback[])var3[0]);
                return null;
            case 9:
                var10000.setCallback(((Number)var3[0]).intValue(), (Callback)var3[1]);
                return null;
            case 10:
                return var10000.getCallback(((Number)var3[0]).intValue());
            case 11:
                return var10000.getCallbacks();
            case 12:
                return b514f2c0.CGLIB$findMethodProxy((Signature)var3[0]);
            case 13:
                b514f2c0.CGLIB$SET_THREAD_CALLBACKS((Callback[])var3[0]);
                return null;
            case 14:
                b514f2c0.CGLIB$SET_STATIC_CALLBACKS((Callback[])var3[0]);
                return null;
            case 15:
                return new Boolean(var10000.CGLIB$equals$1(var3[0]));
            case 16:
                return var10000.CGLIB$clone$4();
            case 17:
                return var10000.CGLIB$toString$2();
            case 18:
                //因为方法下标是18进入到这里 
                //var10000是代理类对象
                //也就是说调用的是代理类对象的CGLIB$add$0方法
                //
                return new Integer(var10000.CGLIB$add$0(((Number)var3[0]).intValue(), ((Number)var3[1]).intValue()));
            case 19:
                return new Integer(var10000.CGLIB$hashCode$3());
            case 20:
                b514f2c0.CGLIB$STATICHOOK1();
                return null;
            }
        } catch (Throwable var4) {
            throw new InvocationTargetException(var4);
        }

        throw new IllegalArgumentException("Cannot find matching method/constructor");
    }
}

看看代理类对象的CGLIBaddadd0方法吧

//代理类MyCalculator$$EnhancerByCGLIB$$d1716464的CGLIB$add$0方法 
//最后调用的还是父类的add方法
    final int CGLIB$add$0(int var1, int var2) {
        return super.add(var1, var2);
    }

附录:生成的字节码件

代理类

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//

package cglib;

import java.lang.reflect.Method;
import org.springframework.cglib.core.ReflectUtils;
import org.springframework.cglib.core.Signature;
import org.springframework.cglib.proxy.Callback;
import org.springframework.cglib.proxy.Factory;
import org.springframework.cglib.proxy.MethodInterceptor;
import org.springframework.cglib.proxy.MethodProxy;

public class Calculator$$EnhancerByCGLIB$$b514f2c0 extends Calculator implements Factory {
    private boolean CGLIB$BOUND;
    public static Object CGLIB$FACTORY_DATA;
    private static final ThreadLocal CGLIB$THREAD_CALLBACKS;
    private static final Callback[] CGLIB$STATIC_CALLBACKS;
    private MethodInterceptor CGLIB$CALLBACK_0;
    private static Object CGLIB$CALLBACK_FILTER;
    private static final Method CGLIB$add$0$Method;
    private static final MethodProxy CGLIB$add$0$Proxy;
    private static final Object[] CGLIB$emptyArgs;
    private static final Method CGLIB$equals$1$Method;
    private static final MethodProxy CGLIB$equals$1$Proxy;
    private static final Method CGLIB$toString$2$Method;
    private static final MethodProxy CGLIB$toString$2$Proxy;
    private static final Method CGLIB$hashCode$3$Method;
    private static final MethodProxy CGLIB$hashCode$3$Proxy;
    private static final Method CGLIB$clone$4$Method;
    private static final MethodProxy CGLIB$clone$4$Proxy;

    static void CGLIB$STATICHOOK1() {
        CGLIB$THREAD_CALLBACKS = new ThreadLocal();
        CGLIB$emptyArgs = new Object[0];
        Class var0 = Class.forName("cglib.Calculator$$EnhancerByCGLIB$$b514f2c0");
        Class var1;
        Method[] var10000 = ReflectUtils.findMethods(new String[]{"equals", "(Ljava/lang/Object;)Z", "toString", "()Ljava/lang/String;", "hashCode", "()I", "clone", "()Ljava/lang/Object;"}, (var1 = Class.forName("java.lang.Object")).getDeclaredMethods());
        CGLIB$equals$1$Method = var10000[0];
        CGLIB$equals$1$Proxy = MethodProxy.create(var1, var0, "(Ljava/lang/Object;)Z", "equals", "CGLIB$equals$1");
        CGLIB$toString$2$Method = var10000[1];
        CGLIB$toString$2$Proxy = MethodProxy.create(var1, var0, "()Ljava/lang/String;", "toString", "CGLIB$toString$2");
        CGLIB$hashCode$3$Method = var10000[2];
        CGLIB$hashCode$3$Proxy = MethodProxy.create(var1, var0, "()I", "hashCode", "CGLIB$hashCode$3");
        CGLIB$clone$4$Method = var10000[3];
        CGLIB$clone$4$Proxy = MethodProxy.create(var1, var0, "()Ljava/lang/Object;", "clone", "CGLIB$clone$4");
        CGLIB$add$0$Method = ReflectUtils.findMethods(new String[]{"add", "(II)I"}, (var1 = Class.forName("cglib.Calculator")).getDeclaredMethods())[0];
        CGLIB$add$0$Proxy = MethodProxy.create(var1, var0, "(II)I", "add", "CGLIB$add$0");
    }

    final int CGLIB$add$0(int var1, int var2) {
        return super.add(var1, var2);
    }

    public final int add(int var1, int var2) {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        if (var10000 != null) {
            Object var3 = var10000.intercept(this, CGLIB$add$0$Method, new Object[]{new Integer(var1), new Integer(var2)}, CGLIB$add$0$Proxy);
            return var3 == null ? 0 : ((Number)var3).intValue();
        } else {
            return super.add(var1, var2);
        }
    }

    final boolean CGLIB$equals$1(Object var1) {
        return super.equals(var1);
    }

    public final boolean equals(Object var1) {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        if (var10000 != null) {
            Object var2 = var10000.intercept(this, CGLIB$equals$1$Method, new Object[]{var1}, CGLIB$equals$1$Proxy);
            return var2 == null ? false : (Boolean)var2;
        } else {
            return super.equals(var1);
        }
    }

    final String CGLIB$toString$2() {
        return super.toString();
    }

    public final String toString() {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        return var10000 != null ? (String)var10000.intercept(this, CGLIB$toString$2$Method, CGLIB$emptyArgs, CGLIB$toString$2$Proxy) : super.toString();
    }

    final int CGLIB$hashCode$3() {
        return super.hashCode();
    }

    public final int hashCode() {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        if (var10000 != null) {
            Object var1 = var10000.intercept(this, CGLIB$hashCode$3$Method, CGLIB$emptyArgs, CGLIB$hashCode$3$Proxy);
            return var1 == null ? 0 : ((Number)var1).intValue();
        } else {
            return super.hashCode();
        }
    }

    final Object CGLIB$clone$4() throws CloneNotSupportedException {
        return super.clone();
    }

    protected final Object clone() throws CloneNotSupportedException {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_0;
        }

        return var10000 != null ? var10000.intercept(this, CGLIB$clone$4$Method, CGLIB$emptyArgs, CGLIB$clone$4$Proxy) : super.clone();
    }

    public static MethodProxy CGLIB$findMethodProxy(Signature var0) {
        String var10000 = var0.toString();
        switch(var10000.hashCode()) {
        case -1287932281:
            if (var10000.equals("add(II)I")) {
                return CGLIB$add$0$Proxy;
            }
            break;
        case -508378822:
            if (var10000.equals("clone()Ljava/lang/Object;")) {
                return CGLIB$clone$4$Proxy;
            }
            break;
        case 1826985398:
            if (var10000.equals("equals(Ljava/lang/Object;)Z")) {
                return CGLIB$equals$1$Proxy;
            }
            break;
        case 1913648695:
            if (var10000.equals("toString()Ljava/lang/String;")) {
                return CGLIB$toString$2$Proxy;
            }
            break;
        case 1984935277:
            if (var10000.equals("hashCode()I")) {
                return CGLIB$hashCode$3$Proxy;
            }
        }

        return null;
    }

    public Calculator$$EnhancerByCGLIB$$b514f2c0() {
        CGLIB$BIND_CALLBACKS(this);
    }

    public static void CGLIB$SET_THREAD_CALLBACKS(Callback[] var0) {
        CGLIB$THREAD_CALLBACKS.set(var0);
    }

    public static void CGLIB$SET_STATIC_CALLBACKS(Callback[] var0) {
        CGLIB$STATIC_CALLBACKS = var0;
    }

    private static final void CGLIB$BIND_CALLBACKS(Object var0) {
        Calculator$$EnhancerByCGLIB$$b514f2c0 var1 = (Calculator$$EnhancerByCGLIB$$b514f2c0)var0;
        if (!var1.CGLIB$BOUND) {
            var1.CGLIB$BOUND = true;
            Object var10000 = CGLIB$THREAD_CALLBACKS.get();
            if (var10000 == null) {
                var10000 = CGLIB$STATIC_CALLBACKS;
                if (var10000 == null) {
                    return;
                }
            }

            var1.CGLIB$CALLBACK_0 = (MethodInterceptor)((Callback[])var10000)[0];
        }

    }

    public Object newInstance(Callback[] var1) {
        CGLIB$SET_THREAD_CALLBACKS(var1);
        Calculator$$EnhancerByCGLIB$$b514f2c0 var10000 = new Calculator$$EnhancerByCGLIB$$b514f2c0();
        CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
        return var10000;
    }

    public Object newInstance(Callback var1) {
        CGLIB$SET_THREAD_CALLBACKS(new Callback[]{var1});
        Calculator$$EnhancerByCGLIB$$b514f2c0 var10000 = new Calculator$$EnhancerByCGLIB$$b514f2c0();
        CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
        return var10000;
    }

    public Object newInstance(Class[] var1, Object[] var2, Callback[] var3) {
        CGLIB$SET_THREAD_CALLBACKS(var3);
        Calculator$$EnhancerByCGLIB$$b514f2c0 var10000 = new Calculator$$EnhancerByCGLIB$$b514f2c0;
        switch(var1.length) {
        case 0:
            var10000.<init>();
            CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
            return var10000;
        default:
            throw new IllegalArgumentException("Constructor not found");
        }
    }

    public Callback getCallback(int var1) {
        CGLIB$BIND_CALLBACKS(this);
        MethodInterceptor var10000;
        switch(var1) {
        case 0:
            var10000 = this.CGLIB$CALLBACK_0;
            break;
        default:
            var10000 = null;
        }

        return var10000;
    }

    public void setCallback(int var1, Callback var2) {
        switch(var1) {
        case 0:
            this.CGLIB$CALLBACK_0 = (MethodInterceptor)var2;
        default:
        }
    }

    public Callback[] getCallbacks() {
        CGLIB$BIND_CALLBACKS(this);
        return new Callback[]{this.CGLIB$CALLBACK_0};
    }

    public void setCallbacks(Callback[] var1) {
        this.CGLIB$CALLBACK_0 = (MethodInterceptor)var1[0];
    }

    static {
        CGLIB$STATICHOOK1();
    }
}

被代理类的FastClass

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//

package cglib;

import java.lang.reflect.InvocationTargetException;
import org.springframework.cglib.core.Signature;
import org.springframework.cglib.reflect.FastClass;

public class Calculator$$FastClassByCGLIB$$660dfb8f extends FastClass {
    public Calculator$$FastClassByCGLIB$$660dfb8f(Class var1) {
        super(var1);
    }

    public int getIndex(Signature var1) {
        String var10000 = var1.toString();
        switch(var10000.hashCode()) {
        case -1287932281:
            if (var10000.equals("add(II)I")) {
                return 0;
            }
            break;
        case 1826985398:
            if (var10000.equals("equals(Ljava/lang/Object;)Z")) {
                return 1;
            }
            break;
        case 1913648695:
            if (var10000.equals("toString()Ljava/lang/String;")) {
                return 2;
            }
            break;
        case 1984935277:
            if (var10000.equals("hashCode()I")) {
                return 3;
            }
        }

        return -1;
    }

    public int getIndex(String var1, Class[] var2) {
        switch(var1.hashCode()) {
        case -1776922004:
            if (var1.equals("toString")) {
                switch(var2.length) {
                case 0:
                    return 2;
                }
            }
            break;
        case -1295482945:
            if (var1.equals("equals")) {
                switch(var2.length) {
                case 1:
                    if (var2[0].getName().equals("java.lang.Object")) {
                        return 1;
                    }
                }
            }
            break;
        case 96417:
            if (var1.equals("add")) {
                switch(var2.length) {
                case 2:
                    if (var2[0].getName().equals("int") && var2[1].getName().equals("int")) {
                        return 0;
                    }
                }
            }
            break;
        case 147696667:
            if (var1.equals("hashCode")) {
                switch(var2.length) {
                case 0:
                    return 3;
                }
            }
        }

        return -1;
    }

    public int getIndex(Class[] var1) {
        switch(var1.length) {
        case 0:
            return 0;
        default:
            return -1;
        }
    }

    public Object invoke(int var1, Object var2, Object[] var3) throws InvocationTargetException {
        Calculator var10000 = (Calculator)var2;
        int var10001 = var1;

        try {
            switch(var10001) {
            case 0:
                return new Integer(var10000.add(((Number)var3[0]).intValue(), ((Number)var3[1]).intValue()));
            case 1:
                return new Boolean(var10000.equals(var3[0]));
            case 2:
                return var10000.toString();
            case 3:
                return new Integer(var10000.hashCode());
            }
        } catch (Throwable var4) {
            throw new InvocationTargetException(var4);
        }

        throw new IllegalArgumentException("Cannot find matching method/constructor");
    }

    public Object newInstance(int var1, Object[] var2) throws InvocationTargetException {
        Calculator var10000 = new Calculator;
        Calculator var10001 = var10000;
        int var10002 = var1;

        try {
            switch(var10002) {
            case 0:
                var10001.<init>();
                return var10000;
            }
        } catch (Throwable var3) {
            throw new InvocationTargetException(var3);
        }

        throw new IllegalArgumentException("Cannot find matching method/constructor");
    }

    public int getMaxIndex() {
        return 3;
    }
}

代理类的FasClass

//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//

package cglib;

import cglib.Calculator..EnhancerByCGLIB..b514f2c0;
import java.lang.reflect.InvocationTargetException;
import org.springframework.cglib.core.Signature;
import org.springframework.cglib.proxy.Callback;
import org.springframework.cglib.reflect.FastClass;

public class Calculator$$EnhancerByCGLIB$$b514f2c0$$FastClassByCGLIB$$ec726d06 extends FastClass {
    public Calculator$$EnhancerByCGLIB$$b514f2c0$$FastClassByCGLIB$$ec726d06(Class var1) {
        super(var1);
    }

    public int getIndex(Signature var1) {
        String var10000 = var1.toString();
        switch(var10000.hashCode()) {
        case -1882565338:
            if (var10000.equals("CGLIB$equals$1(Ljava/lang/Object;)Z")) {
                return 15;
            }
            break;
        case -1870561232:
            if (var10000.equals("CGLIB$findMethodProxy(Lorg/springframework/cglib/core/Signature;)Lorg/springframework/cglib/proxy/MethodProxy;")) {
                return 12;
            }
            break;
        case -1745842178:
            if (var10000.equals("setCallbacks([Lorg/springframework/cglib/proxy/Callback;)V")) {
                return 8;
            }
            break;
        case -1641413109:
            if (var10000.equals("newInstance([Lorg/springframework/cglib/proxy/Callback;)Ljava/lang/Object;")) {
                return 5;
            }
            break;
        case -1457535688:
            if (var10000.equals("CGLIB$STATICHOOK1()V")) {
                return 20;
            }
            break;
        case -1411842725:
            if (var10000.equals("CGLIB$hashCode$3()I")) {
                return 19;
            }
            break;
        case -1287932281:
            if (var10000.equals("add(II)I")) {
                return 0;
            }
            break;
        case -1034266769:
            if (var10000.equals("CGLIB$SET_STATIC_CALLBACKS([Lorg/springframework/cglib/proxy/Callback;)V")) {
                return 14;
            }
            break;
        case -1025895669:
            if (var10000.equals("CGLIB$SET_THREAD_CALLBACKS([Lorg/springframework/cglib/proxy/Callback;)V")) {
                return 13;
            }
            break;
        case -988317324:
            if (var10000.equals("newInstance([Ljava/lang/Class;[Ljava/lang/Object;[Lorg/springframework/cglib/proxy/Callback;)Ljava/lang/Object;")) {
                return 6;
            }
            break;
        case -984241474:
            if (var10000.equals("CGLIB$add$0(II)I")) {
                return 18;
            }
            break;
        case -508378822:
            if (var10000.equals("clone()Ljava/lang/Object;")) {
                return 4;
            }
            break;
        case 610042816:
            if (var10000.equals("newInstance(Lorg/springframework/cglib/proxy/Callback;)Ljava/lang/Object;")) {
                return 7;
            }
            break;
        case 1132856532:
            if (var10000.equals("getCallbacks()[Lorg/springframework/cglib/proxy/Callback;")) {
                return 11;
            }
            break;
        case 1246779367:
            if (var10000.equals("setCallback(ILorg/springframework/cglib/proxy/Callback;)V")) {
                return 9;
            }
            break;
        case 1306468936:
            if (var10000.equals("CGLIB$toString$2()Ljava/lang/String;")) {
                return 17;
            }
            break;
        case 1364367423:
            if (var10000.equals("getCallback(I)Lorg/springframework/cglib/proxy/Callback;")) {
                return 10;
            }
            break;
        case 1800494055:
            if (var10000.equals("CGLIB$clone$4()Ljava/lang/Object;")) {
                return 16;
            }
            break;
        case 1826985398:
            if (var10000.equals("equals(Ljava/lang/Object;)Z")) {
                return 1;
            }
            break;
        case 1913648695:
            if (var10000.equals("toString()Ljava/lang/String;")) {
                return 2;
            }
            break;
        case 1984935277:
            if (var10000.equals("hashCode()I")) {
                return 3;
            }
        }

        return -1;
    }

    public int getIndex(String var1, Class[] var2) {
        switch(var1.hashCode()) {
        case -1776922004:
            if (var1.equals("toString")) {
                switch(var2.length) {
                case 0:
                    return 2;
                }
            }
            break;
        case -1295482945:
            if (var1.equals("equals")) {
                switch(var2.length) {
                case 1:
                    if (var2[0].getName().equals("java.lang.Object")) {
                        return 1;
                    }
                }
            }
            break;
        case -1053468136:
            if (var1.equals("getCallbacks")) {
                switch(var2.length) {
                case 0:
                    return 11;
                }
            }
            break;
        case -124978609:
            if (var1.equals("CGLIB$equals$1")) {
                switch(var2.length) {
                case 1:
                    if (var2[0].getName().equals("java.lang.Object")) {
                        return 15;
                    }
                }
            }
            break;
        case -60403779:
            if (var1.equals("CGLIB$SET_STATIC_CALLBACKS")) {
                switch(var2.length) {
                case 1:
                    if (var2[0].getName().equals("[Lorg.springframework.cglib.proxy.Callback;")) {
                        return 14;
                    }
                }
            }
            break;
        case -29025555:
            if (var1.equals("CGLIB$hashCode$3")) {
                switch(var2.length) {
                case 0:
                    return 19;
                }
            }
            break;
        case 96417:
            if (var1.equals("add")) {
                switch(var2.length) {
                case 2:
                    if (var2[0].getName().equals("int") && var2[1].getName().equals("int")) {
                        return 0;
                    }
                }
            }
            break;
        case 85179481:
            if (var1.equals("CGLIB$SET_THREAD_CALLBACKS")) {
                switch(var2.length) {
                case 1:
                    if (var2[0].getName().equals("[Lorg.springframework.cglib.proxy.Callback;")) {
                        return 13;
                    }
                }
            }
            break;
        case 94756189:
            if (var1.equals("clone")) {
                switch(var2.length) {
                case 0:
                    return 4;
                }
            }
            break;
        case 147696667:
            if (var1.equals("hashCode")) {
                switch(var2.length) {
                case 0:
                    return 3;
                }
            }
            break;
        case 161998109:
            if (var1.equals("CGLIB$STATICHOOK1")) {
                switch(var2.length) {
                case 0:
                    return 20;
                }
            }
            break;
        case 495524492:
            if (var1.equals("setCallbacks")) {
                switch(var2.length) {
                case 1:
                    if (var2[0].getName().equals("[Lorg.springframework.cglib.proxy.Callback;")) {
                        return 8;
                    }
                }
            }
            break;
        case 1108311562:
            if (var1.equals("CGLIB$add$0")) {
                switch(var2.length) {
                case 2:
                    if (var2[0].getName().equals("int") && var2[1].getName().equals("int")) {
                        return 18;
                    }
                }
            }
            break;
        case 1154623345:
            if (var1.equals("CGLIB$findMethodProxy")) {
                switch(var2.length) {
                case 1:
                    if (var2[0].getName().equals("org.springframework.cglib.core.Signature")) {
                        return 12;
                    }
                }
            }
            break;
        case 1543336189:
            if (var1.equals("CGLIB$toString$2")) {
                switch(var2.length) {
                case 0:
                    return 17;
                }
            }
            break;
        case 1811874389:
            if (var1.equals("newInstance")) {
                switch(var2.length) {
                case 1:
                    String var10001 = var2[0].getName();
                    switch(var10001.hashCode()) {
                    case -1997738671:
                        if (var10001.equals("[Lorg.springframework.cglib.proxy.Callback;")) {
                            return 5;
                        }
                        break;
                    case 1364160985:
                        if (var10001.equals("org.springframework.cglib.proxy.Callback")) {
                            return 7;
                        }
                    }
                case 2:
                default:
                    break;
                case 3:
                    if (var2[0].getName().equals("[Ljava.lang.Class;") && var2[1].getName().equals("[Ljava.lang.Object;") && var2[2].getName().equals("[Lorg.springframework.cglib.proxy.Callback;")) {
                        return 6;
                    }
                }
            }
            break;
        case 1817099975:
            if (var1.equals("setCallback")) {
                switch(var2.length) {
                case 2:
                    if (var2[0].getName().equals("int") && var2[1].getName().equals("org.springframework.cglib.proxy.Callback")) {
                        return 9;
                    }
                }
            }
            break;
        case 1905679803:
            if (var1.equals("getCallback")) {
                switch(var2.length) {
                case 1:
                    if (var2[0].getName().equals("int")) {
                        return 10;
                    }
                }
            }
            break;
        case 1951977610:
            if (var1.equals("CGLIB$clone$4")) {
                switch(var2.length) {
                case 0:
                    return 16;
                }
            }
        }

        return -1;
    }

    public int getIndex(Class[] var1) {
        switch(var1.length) {
        case 0:
            return 0;
        default:
            return -1;
        }
    }

    public Object invoke(int var1, Object var2, Object[] var3) throws InvocationTargetException {
        b514f2c0 var10000 = (b514f2c0)var2;
        int var10001 = var1;

        try {
            switch(var10001) {
            case 0:
                return new Integer(var10000.add(((Number)var3[0]).intValue(), ((Number)var3[1]).intValue()));
            case 1:
                return new Boolean(var10000.equals(var3[0]));
            case 2:
                return var10000.toString();
            case 3:
                return new Integer(var10000.hashCode());
            case 4:
                return var10000.clone();
            case 5:
                return var10000.newInstance((Callback[])var3[0]);
            case 6:
                return var10000.newInstance((Class[])var3[0], (Object[])var3[1], (Callback[])var3[2]);
            case 7:
                return var10000.newInstance((Callback)var3[0]);
            case 8:
                var10000.setCallbacks((Callback[])var3[0]);
                return null;
            case 9:
                var10000.setCallback(((Number)var3[0]).intValue(), (Callback)var3[1]);
                return null;
            case 10:
                return var10000.getCallback(((Number)var3[0]).intValue());
            case 11:
                return var10000.getCallbacks();
            case 12:
                return b514f2c0.CGLIB$findMethodProxy((Signature)var3[0]);
            case 13:
                b514f2c0.CGLIB$SET_THREAD_CALLBACKS((Callback[])var3[0]);
                return null;
            case 14:
                b514f2c0.CGLIB$SET_STATIC_CALLBACKS((Callback[])var3[0]);
                return null;
            case 15:
                return new Boolean(var10000.CGLIB$equals$1(var3[0]));
            case 16:
                return var10000.CGLIB$clone$4();
            case 17:
                return var10000.CGLIB$toString$2();
            case 18:
                return new Integer(var10000.CGLIB$add$0(((Number)var3[0]).intValue(), ((Number)var3[1]).intValue()));
            case 19:
                return new Integer(var10000.CGLIB$hashCode$3());
            case 20:
                b514f2c0.CGLIB$STATICHOOK1();
                return null;
            }
        } catch (Throwable var4) {
            throw new InvocationTargetException(var4);
        }

        throw new IllegalArgumentException("Cannot find matching method/constructor");
    }

    public Object newInstance(int var1, Object[] var2) throws InvocationTargetException {
        b514f2c0 var10000 = new b514f2c0;
        b514f2c0 var10001 = var10000;
        int var10002 = var1;

        try {
            switch(var10002) {
            case 0:
                var10001.<init>();
                return var10000;
            }
        } catch (Throwable var3) {
            throw new InvocationTargetException(var3);
        }

        throw new IllegalArgumentException("Cannot find matching method/constructor");
    }

    public int getMaxIndex() {
        return 20;
    }
}
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