spring（十三）------------jdk動态代理和CGLIB動态代理

jdk動态代理和CGLIB動态代理測試。

我們先建好一個測試類

在這裡插入代碼片package test.dao;


import org.springframework.stereotype.Component;

@Component
public class DaoImpl implements Dao {
	@Override
	public void query() {
		System.out.println("DaoImpl");
	}
}

           

建立一個切面。

package test.aspect;

import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.stereotype.Component;

@Component
@Aspect
public class TestAcpectImpl{


	@Pointcut("execution(* test.dao.*.*(..))")
	public void pointCut(){
	}

	@Before("pointCut()")
	public void before(){
		System.out.println("before!!!!!");
	}

}

           

package test;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import test.config.Appconfig;
import test.dao.Dao;
import test.dao.DaoImpl;

public class App {
	public static void main(String[] args) {
		AnnotationConfigApplicationContext annotationConfigApplicationContext=new AnnotationConfigApplicationContext();
		annotationConfigApplicationContext.register(Appconfig.class);
		annotationConfigApplicationContext.refresh();
//		annotationConfigApplicationContext.getBean(Dao.class).query();
		Dao dao = (Dao) annotationConfigApplicationContext.getBean("daoImpl");
		System.out.println(dao instanceof DaoImpl);

	}
}

           

package test.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.EnableAspectJAutoProxy;

//@Configuration
@ComponentScan("test")
@EnableAspectJAutoProxy(proxyTargetClass = false)
public class Appconfig {
}

           

首先思考一個問題。

當@EnableAspectJAutoProxy(proxyTargetClass = false)的時候。列印出來是false，證明獲得的dao不是DaoImpl或其子類。

當@EnableAspectJAutoProxy(proxyTargetClass = true)的時候。列印出來是true，證明獲得的dao是DaoImpl或其子類。

截圖如下：

為什麼會這樣呢？這個就跟jdk動态代理和CGLIB動态代理有關系了，怎麼證明呢？

首先了解下官網上的這句話。

proxyTargetClass: true if the target class is to be proxied, rather than the target class’s interfaces. If this property value is set to true, then CGLIB proxies are created (but see also JDK- and CGLIB-based proxies).

大緻意思是proxyTargetClass=true就會建立CGLIB代理，false就會建立jdk動态代理。

按照官網的了解是jdk動态代理産生的代理對象不屬于對象本身這個類。是以我們需要擷取jdk代理類的位元組碼。是以使用以下代碼來擷取到位元組碼

package test;

import sun.misc.ProxyGenerator;
import test.dao.Dao;

import java.io.File;
import java.io.FileOutputStream;

public class Appproxy {
	public static void main(String[] args) {
		Class<?>[] Myproxy = new Class[]{Dao.class};
		byte bytes[] = ProxyGenerator.generateProxyClass("dao", Myproxy);

		File file=new File("d:\\Dao.class");
		try {
			FileOutputStream fileOutputStream=new FileOutputStream(file);
			fileOutputStream.write(bytes);
			fileOutputStream.flush();
			fileOutputStream.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
}

           

至于調試就自己調試就行了，隻要能通過就行，這裡就直接測試了。

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

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.lang.reflect.UndeclaredThrowableException;
import test.dao.Dao;

public final class dao extends Proxy implements Dao {
    private static Method m1;
    private static Method m3;
    private static Method m2;
    private static Method m0;

    public dao(InvocationHandler var1) throws  {
        super(var1);
    }

    public final boolean equals(Object var1) throws  {
        try {
            return (Boolean)super.h.invoke(this, m1, new Object[]{var1});
        } catch (RuntimeException | Error var3) {
            throw var3;
        } catch (Throwable var4) {
            throw new UndeclaredThrowableException(var4);
        }
    }

    public final void query() throws  {
        try {
            super.h.invoke(this, m3, (Object[])null);
        } catch (RuntimeException | Error var2) {
            throw var2;
        } catch (Throwable var3) {
            throw new UndeclaredThrowableException(var3);
        }
    }

    public final String toString() throws  {
        try {
            return (String)super.h.invoke(this, m2, (Object[])null);
        } catch (RuntimeException | Error var2) {
            throw var2;
        } catch (Throwable var3) {
            throw new UndeclaredThrowableException(var3);
        }
    }

    public final int hashCode() throws  {
        try {
            return (Integer)super.h.invoke(this, m0, (Object[])null);
        } catch (RuntimeException | Error var2) {
            throw var2;
        } catch (Throwable var3) {
            throw new UndeclaredThrowableException(var3);
        }
    }

    static {
        try {
            m1 = Class.forName("java.lang.Object").getMethod("equals", Class.forName("java.lang.Object"));
            m3 = Class.forName("test.dao.Dao").getMethod("query");
            m2 = Class.forName("java.lang.Object").getMethod("toString");
            m0 = Class.forName("java.lang.Object").getMethod("hashCode");
        } catch (NoSuchMethodException var2) {
            throw new NoSuchMethodError(var2.getMessage());
        } catch (ClassNotFoundException var3) {
            throw new NoClassDefFoundError(var3.getMessage());
        }
    }
}

           

這是生成的檔案，可以看到jdk的動态代理預設繼承了Proxy類去實作了Dao，因為jdk的動态代理預設繼承了Proxy類，是以兩者不等，因為傳回false。

下面看下CGLIB代理，這裡使用HSDB檢視，方法請看下面的連結

https://jingyan.baidu.com/article/6079ad0e38bc2368ff86db90.html

産生的class檔案為：

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

package test.dao;

import java.lang.reflect.Method;
import org.aopalliance.aop.Advice;
import org.springframework.aop.Advisor;
import org.springframework.aop.SpringProxy;
import org.springframework.aop.TargetClassAware;
import org.springframework.aop.TargetSource;
import org.springframework.aop.framework.Advised;
import org.springframework.aop.framework.AopConfigException;
import org.springframework.cglib.core.ReflectUtils;
import org.springframework.cglib.core.Signature;
import org.springframework.cglib.proxy.Callback;
import org.springframework.cglib.proxy.Dispatcher;
import org.springframework.cglib.proxy.Factory;
import org.springframework.cglib.proxy.MethodInterceptor;
import org.springframework.cglib.proxy.MethodProxy;
import org.springframework.cglib.proxy.NoOp;

public class DaoImpl$$EnhancerBySpringCGLIB$$fec3158a extends DaoImpl implements SpringProxy, Advised, 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$CALLBACK_0;
    private MethodInterceptor CGLIB$CALLBACK_1;
    private NoOp CGLIB$CALLBACK_2;
    private Dispatcher CGLIB$CALLBACK_3;
    private Dispatcher CGLIB$CALLBACK_4;
    private MethodInterceptor CGLIB$CALLBACK_5;
    private MethodInterceptor CGLIB$CALLBACK_6;
    private static Object CGLIB$CALLBACK_FILTER;
    private static final Method CGLIB$query$0$Method;
    private static final MethodProxy CGLIB$query$0$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;

    public DaoImpl$$EnhancerBySpringCGLIB$$fec3158a() {
        CGLIB$BIND_CALLBACKS(this);
    }

    static {
        CGLIB$STATICHOOK1();
    }

    public final boolean equals(Object var1) {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_5;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_5;
        }

        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);
        }
    }

    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();
    }

    public final int hashCode() {
        MethodInterceptor var10000 = this.CGLIB$CALLBACK_6;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_6;
        }

        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();
        }
    }

    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 final int indexOf(Advice var1) {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).indexOf(var1);
    }

    public final int indexOf(Advisor var1) {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).indexOf(var1);
    }

    public Object newInstance(Class[] var1, Object[] var2, Callback[] var3) {
        CGLIB$SET_THREAD_CALLBACKS(var3);
        DaoImpl$$EnhancerBySpringCGLIB$$fec3158a var10000 = new DaoImpl$$EnhancerBySpringCGLIB$$fec3158a;
        switch(var1.length) {
        case 0:
            var10000.<init>();
            CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
            return var10000;
        default:
            throw new IllegalArgumentException("Constructor not found");
        }
    }

    public Object newInstance(Callback var1) {
        throw new IllegalStateException("More than one callback object required");
    }

    public Object newInstance(Callback[] var1) {
        CGLIB$SET_THREAD_CALLBACKS(var1);
        DaoImpl$$EnhancerBySpringCGLIB$$fec3158a var10000 = new DaoImpl$$EnhancerBySpringCGLIB$$fec3158a();
        CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
        return var10000;
    }

    public final boolean isFrozen() {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).isFrozen();
    }

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

        if (var10000 != null) {
            var10000.intercept(this, CGLIB$query$0$Method, CGLIB$emptyArgs, CGLIB$query$0$Proxy);
        } else {
            super.query();
        }
    }

    public final Class getTargetClass() {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((TargetClassAware)var10000.loadObject()).getTargetClass();
    }

    public final void setTargetSource(TargetSource var1) {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        ((Advised)var10000.loadObject()).setTargetSource(var1);
    }

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

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

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

    final void CGLIB$query$0() {
        super.query();
    }

    public void setCallbacks(Callback[] var1) {
        this.CGLIB$CALLBACK_0 = (MethodInterceptor)var1[0];
        this.CGLIB$CALLBACK_1 = (MethodInterceptor)var1[1];
        this.CGLIB$CALLBACK_2 = (NoOp)var1[2];
        this.CGLIB$CALLBACK_3 = (Dispatcher)var1[3];
        this.CGLIB$CALLBACK_4 = (Dispatcher)var1[4];
        this.CGLIB$CALLBACK_5 = (MethodInterceptor)var1[5];
        this.CGLIB$CALLBACK_6 = (MethodInterceptor)var1[6];
    }

    public Callback[] getCallbacks() {
        CGLIB$BIND_CALLBACKS(this);
        return new Callback[]{this.CGLIB$CALLBACK_0, this.CGLIB$CALLBACK_1, this.CGLIB$CALLBACK_2, this.CGLIB$CALLBACK_3, this.CGLIB$CALLBACK_4, this.CGLIB$CALLBACK_5, this.CGLIB$CALLBACK_6};
    }

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

    public static MethodProxy CGLIB$findMethodProxy(Signature var0) {
        String var10000 = var0.toString();
        switch(var10000.hashCode()) {
        case -1166709331:
            if (var10000.equals("query()V")) {
                return CGLIB$query$0$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;
    }

    static void CGLIB$STATICHOOK1() {
        CGLIB$THREAD_CALLBACKS = new ThreadLocal();
        CGLIB$emptyArgs = new Object[0];
        Class var0 = Class.forName("test.dao.DaoImpl$$EnhancerBySpringCGLIB$$fec3158a");
        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$4");
        CGLIB$query$0$Method = ReflectUtils.findMethods(new String[]{"query", "()V"}, (var1 = Class.forName("test.dao.DaoImpl")).getDeclaredMethods())[0];
        CGLIB$query$0$Proxy = MethodProxy.create(var1, var0, "()V", "query", "CGLIB$query$0");
    }

    private static final void CGLIB$BIND_CALLBACKS(Object var0) {
        DaoImpl$$EnhancerBySpringCGLIB$$fec3158a var1 = (DaoImpl$$EnhancerBySpringCGLIB$$fec3158a)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;
                }
            }

            Callback[] var10001 = (Callback[])var10000;
            var1.CGLIB$CALLBACK_6 = (MethodInterceptor)((Callback[])var10000)[6];
            var1.CGLIB$CALLBACK_5 = (MethodInterceptor)var10001[5];
            var1.CGLIB$CALLBACK_4 = (Dispatcher)var10001[4];
            var1.CGLIB$CALLBACK_3 = (Dispatcher)var10001[3];
            var1.CGLIB$CALLBACK_2 = (NoOp)var10001[2];
            var1.CGLIB$CALLBACK_1 = (MethodInterceptor)var10001[1];
            var1.CGLIB$CALLBACK_0 = (MethodInterceptor)var10001[0];
        }

    }

    public final void setPreFiltered(boolean var1) {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        ((Advised)var10000.loadObject()).setPreFiltered(var1);
    }

    public final boolean isExposeProxy() {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).isExposeProxy();
    }

    public final void setExposeProxy(boolean var1) {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        ((Advised)var10000.loadObject()).setExposeProxy(var1);
    }

    public final TargetSource getTargetSource() {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).getTargetSource();
    }

    public final boolean removeAdvisor(Advisor var1) {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).removeAdvisor(var1);
    }

    public final void removeAdvisor(int var1) throws AopConfigException {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        ((Advised)var10000.loadObject()).removeAdvisor(var1);
    }

    public final boolean removeAdvice(Advice var1) {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).removeAdvice(var1);
    }

    public final boolean isPreFiltered() {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).isPreFiltered();
    }

    public final void addAdvisor(int var1, Advisor var2) throws AopConfigException {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        ((Advised)var10000.loadObject()).addAdvisor(var1, var2);
    }

    public final void addAdvisor(Advisor var1) throws AopConfigException {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        ((Advised)var10000.loadObject()).addAdvisor(var1);
    }

    public final boolean replaceAdvisor(Advisor var1, Advisor var2) throws AopConfigException {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).replaceAdvisor(var1, var2);
    }

    public final void addAdvice(int var1, Advice var2) throws AopConfigException {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        ((Advised)var10000.loadObject()).addAdvice(var1, var2);
    }

    public final void addAdvice(Advice var1) throws AopConfigException {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        ((Advised)var10000.loadObject()).addAdvice(var1);
    }

    public final Advisor[] getAdvisors() {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).getAdvisors();
    }

    public final boolean isProxyTargetClass() {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).isProxyTargetClass();
    }

    public final boolean isInterfaceProxied(Class var1) {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).isInterfaceProxied(var1);
    }

    public final Class[] getProxiedInterfaces() {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).getProxiedInterfaces();
    }

    public final String toProxyConfigString() {
        Dispatcher var10000 = this.CGLIB$CALLBACK_4;
        if (var10000 == null) {
            CGLIB$BIND_CALLBACKS(this);
            var10000 = this.CGLIB$CALLBACK_4;
        }

        return ((Advised)var10000.loadObject()).toProxyConfigString();
    }

    public void setCallback(int var1, Callback var2) {
        switch(var1) {
        case 0:
            this.CGLIB$CALLBACK_0 = (MethodInterceptor)var2;
            break;
        case 1:
            this.CGLIB$CALLBACK_1 = (MethodInterceptor)var2;
            break;
        case 2:
            this.CGLIB$CALLBACK_2 = (NoOp)var2;
            break;
        case 3:
            this.CGLIB$CALLBACK_3 = (Dispatcher)var2;
            break;
        case 4:
            this.CGLIB$CALLBACK_4 = (Dispatcher)var2;
            break;
        case 5:
            this.CGLIB$CALLBACK_5 = (MethodInterceptor)var2;
            break;
        case 6:
            this.CGLIB$CALLBACK_6 = (MethodInterceptor)var2;
        }

    }

    public Callback getCallback(int var1) {
        CGLIB$BIND_CALLBACKS(this);
        Object var10000;
        switch(var1) {
        case 0:
            var10000 = this.CGLIB$CALLBACK_0;
            break;
        case 1:
            var10000 = this.CGLIB$CALLBACK_1;
            break;
        case 2:
            var10000 = this.CGLIB$CALLBACK_2;
            break;
        case 3:
            var10000 = this.CGLIB$CALLBACK_3;
            break;
        case 4:
            var10000 = this.CGLIB$CALLBACK_4;
            break;
        case 5:
            var10000 = this.CGLIB$CALLBACK_5;
            break;
        case 6:
            var10000 = this.CGLIB$CALLBACK_6;
            break;
        default:
            var10000 = null;
        }

        return (Callback)var10000;
    }

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

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

           

由此可以看出CGLIB是繼承了DaoImpl對象，與jdk不同，至于具體怎麼實作本文章不深究。