JDK动态代理
接口类
public interface Subject {
void doSomething();
}
接口实现
public class RealSubject implements Subject {
@Override
public void doSomething() {
System.out.println("RealSubject do something");
}
}
InvocationHandler类
package daili;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
/**
* JDKDynamicProxy
* jdkd动态代理
*
* @author
* @create 2018-03-29 16:17
**/
public class JDKDynamicProxy implements InvocationHandler {
private Object target;
public JDKDynamicProxy(Object target) {
this.target = target;
}
/**
* 获取被代理接口实例对象
* @param <T>
* @return
*/
public <T> T getProxy() {
return (T) Proxy.newProxyInstance(target.getClass().getClassLoader(), target.getClass().getInterfaces(), this);
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
System.out.println("Do something before");
Object result = method.invoke(target, args);
System.out.println("Do something after");
return result;
}
}
使用方法
package daili;
public class Test {
public static void main(String[] args) {
// 保存生成的代理类的字节码文件
System.getProperties().put("sun.misc.ProxyGenerator.saveGeneratedFiles", "true");
// jdk动态代理测试
Subject subject = new JDKDynamicProxy(new RealSubject()).getProxy();
subject.doSomething();
}
}
看下其生成的代理类字节码
JDK代理类字节码
//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//
package com.sun.proxy;
import daili.Subject;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.lang.reflect.UndeclaredThrowableException;
public final class $Proxy0 extends Proxy implements Subject {
private static Method m1;
private static Method m3;
private static Method m2;
private static Method m0;
public $Proxy0(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 doSomething() 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("daili.Subject").getMethod("doSomething");
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());
}
}
}
代理类必须继承自接口。可以看出来jdk的代理类切面逻辑由InvocationHandler实现，
Proxy0代理类构造入参是InvocationHandler，根据需要被代理的类继承的接口生成方法，当接口方法被调用时，执行InvocationHandler的invoke方法invoke方法
try {
m1 = Class.forName("java.lang.Object").getMethod("equals", Class.forName("java.lang.Object"));
m3 = Class.forName("daili.Subject").getMethod("doSomething");
m2 = Class.forName("java.lang.Object").getMethod("toString");
m0 = Class.forName("java.lang.Object").getMethod("hashCode");
}
可以看出，除了目标接口方法，还对equals，toString，hashCode与对象有关的方法进行特殊处理，通过handler进行处理。
invoke方法三个参数
参数1 代理类本身
参数2 调用的对应接口方法
参数3 方法的入参数组
cglib动态代理
拦截目标类
public class Student{
public void say() {
System.out.println("我是学生...");
test();
}
public void test() {
System.out.println("test");
}
}
拦截器
public class CglibProxy implements MethodInterceptor {
/**
* 重写方法拦截在方法前和方法后加入业务
* Object obj为目标对象
* Method method为目标方法
* Object[] params 为参数，
* MethodProxy proxy CGlib方法代理对象
*/
@Override
public Object intercept(Object obj, Method method, Object[] args,
MethodProxy methodProxy) throws Throwable {
System.out.println("===============");
return methodProxy.invokeSuper(obj, args);
}
}
使用方法
public class CglibProxyTest {
public static void main(String[] args) throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException {
// 生成class类的路径
System.setProperty(DebuggingClassWriter.DEBUG_LOCATION_PROPERTY, "D://temp");
Enhancer enhancer = new Enhancer();
enhancer.setSuperclass(Student.class);
enhancer.setCallback(new CglibProxy());
Student student = (Student) enhancer.create();
student.say();
}
}
代理类字节码文件
首先需要先说一下FastClass。在使用Cglib动态代理时会生成3个新类，如下图所示。
第一个文件：代理类的FastClass类
第二个文件：代理类，继承自被代理类
第三个文件：被代理类的FastClass类
FastClass类主要实现了字节码与执行方法的索引关系。大致果然如下图所示，“字符串”与“对象”分别的两个过程的主要入参。cglib代理以这种方式避免了对被代理对象的反射调用，这也是cglib性能较优于JDK代理的地方。
委托类字节码
首先执行的的是委托类
//
// Source code recreated from a .class file by IntelliJ IDEA
// (powered by Fernflower decompiler)
//
package daili.cglib;
import java.lang.reflect.Method;
import net.sf.cglib.core.ReflectUtils;
import net.sf.cglib.core.Signature;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.proxy.Factory;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;
public class Student$$EnhancerByCGLIB$$2276c04 extends Student implements Factory {
private boolean CGLIB$BOUND;
private static final ThreadLocal CGLIB$THREAD_CALLBACKS;
private static final Callback[] CGLIB$STATIC_CALLBACKS;
private MethodInterceptor CGLIB$CALLBACK_0;
private static final Method CGLIB$test$0$Method;
private static final MethodProxy CGLIB$test$0$Proxy;
private static final Object[] CGLIB$emptyArgs;
private static final Method CGLIB$say$1$Method;
private static final MethodProxy CGLIB$say$1$Proxy;
private static final Method CGLIB$finalize$2$Method;
private static final MethodProxy CGLIB$finalize$2$Proxy;
private static final Method CGLIB$equals$3$Method;
private static final MethodProxy CGLIB$equals$3$Proxy;
private static final Method CGLIB$toString$4$Method;
private static final MethodProxy CGLIB$toString$4$Proxy;
private static final Method CGLIB$hashCode$5$Method;
private static final MethodProxy CGLIB$hashCode$5$Proxy;
private static final Method CGLIB$clone$6$Method;
private static final MethodProxy CGLIB$clone$6$Proxy;
static void CGLIB$STATICHOOK1() {
CGLIB$THREAD_CALLBACKS = new ThreadLocal();
CGLIB$emptyArgs = new Object[0];
Class var0 = Class.forName("daili.cglib.Student$$EnhancerByCGLIB$$2276c04");
Class var1;
Method[] var10000 = ReflectUtils.findMethods(new String[]{"finalize", "()V", "equals", "(Ljava/lang/Object;)Z", "toString", "()Ljava/lang/String;", "hashCode", "()I", "clone", "()Ljava/lang/Object;"}, (var1 = Class.forName("java.lang.Object")).getDeclaredMethods());
CGLIB$finalize$2$Method = var10000[0];
CGLIB$finalize$2$Proxy = MethodProxy.create(var1, var0, "()V", "finalize", "CGLIB$finalize$2");
CGLIB$equals$3$Method = var10000[1];
CGLIB$equals$3$Proxy = MethodProxy.create(var1, var0, "(Ljava/lang/Object;)Z", "equals", "CGLIB$equals$3");
CGLIB$toString$4$Method = var10000[2];
CGLIB$toString$4$Proxy = MethodProxy.create(var1, var0, "()Ljava/lang/String;", "toString", "CGLIB$toString$4");
CGLIB$hashCode$5$Method = var10000[3];
CGLIB$hashCode$5$Proxy = MethodProxy.create(var1, var0, "()I", "hashCode", "CGLIB$hashCode$5");
CGLIB$clone$6$Method = var10000[4];
CGLIB$clone$6$Proxy = MethodProxy.create(var1, var0, "()Ljava/lang/Object;", "clone", "CGLIB$clone$6");
var10000 = ReflectUtils.findMethods(new String[]{"test", "()V", "say", "()V"}, (var1 = Class.forName("daili.cglib.Student")).getDeclaredMethods());
CGLIB$test$0$Method = var10000[0];
CGLIB$test$0$Proxy = MethodProxy.create(var1, var0, "()V", "test", "CGLIB$test$0");
CGLIB$say$1$Method = var10000[1];
CGLIB$say$1$Proxy = MethodProxy.create(var1, var0, "()V", "say", "CGLIB$say$1");
}
final void CGLIB$test$0() {
super.test();
}
public final void test() {
MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
if (this.CGLIB$CALLBACK_0 == null) {
CGLIB$BIND_CALLBACKS(this);
var10000 = this.CGLIB$CALLBACK_0;
}
if (var10000 != null) {
var10000.intercept(this, CGLIB$test$0$Method, CGLIB$emptyArgs, CGLIB$test$0$Proxy);
} else {
super.test();
}
}
final void CGLIB$say$1() {
super.say();
}
public final void say() {
MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
if (this.CGLIB$CALLBACK_0 == null) {
CGLIB$BIND_CALLBACKS(this);
var10000 = this.CGLIB$CALLBACK_0;
}
if (var10000 != null) {
var10000.intercept(this, CGLIB$say$1$Method, CGLIB$emptyArgs, CGLIB$say$1$Proxy);
} else {
super.say();
}
}
final void CGLIB$finalize$2() throws Throwable {
super.finalize();
}
protected final void finalize() throws Throwable {
MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
if (this.CGLIB$CALLBACK_0 == null) {
CGLIB$BIND_CALLBACKS(this);
var10000 = this.CGLIB$CALLBACK_0;
}
if (var10000 != null) {
var10000.intercept(this, CGLIB$finalize$2$Method, CGLIB$emptyArgs, CGLIB$finalize$2$Proxy);
} else {
super.finalize();
}
}
final boolean CGLIB$equals$3(Object var1) {
return super.equals(var1);
}
public final boolean equals(Object var1) {
MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
if (this.CGLIB$CALLBACK_0 == null) {
CGLIB$BIND_CALLBACKS(this);
var10000 = this.CGLIB$CALLBACK_0;
}
if (var10000 != null) {
Object var2 = var10000.intercept(this, CGLIB$equals$3$Method, new Object[]{var1}, CGLIB$equals$3$Proxy);
return var2 == null ? false : (Boolean)var2;
} else {
return super.equals(var1);
}
}
final String CGLIB$toString$4() {
return super.toString();
}
public final String toString() {
MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
if (this.CGLIB$CALLBACK_0 == null) {
CGLIB$BIND_CALLBACKS(this);
var10000 = this.CGLIB$CALLBACK_0;
}
return var10000 != null ? (String)var10000.intercept(this, CGLIB$toString$4$Method, CGLIB$emptyArgs, CGLIB$toString$4$Proxy) : super.toString();
}
final int CGLIB$hashCode$5() {
return super.hashCode();
}
public final int hashCode() {
MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
if (this.CGLIB$CALLBACK_0 == null) {
CGLIB$BIND_CALLBACKS(this);
var10000 = this.CGLIB$CALLBACK_0;
}
if (var10000 != null) {
Object var1 = var10000.intercept(this, CGLIB$hashCode$5$Method, CGLIB$emptyArgs, CGLIB$hashCode$5$Proxy);
return var1 == null ? 0 : ((Number)var1).intValue();
} else {
return super.hashCode();
}
}
final Object CGLIB$clone$6() throws CloneNotSupportedException {
return super.clone();
}
protected final Object clone() throws CloneNotSupportedException {
MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
if (this.CGLIB$CALLBACK_0 == null) {
CGLIB$BIND_CALLBACKS(this);
var10000 = this.CGLIB$CALLBACK_0;
}
return var10000 != null ? var10000.intercept(this, CGLIB$clone$6$Method, CGLIB$emptyArgs, CGLIB$clone$6$Proxy) : super.clone();
}
public static MethodProxy CGLIB$findMethodProxy(Signature var0) {
String var10000 = var0.toString();
switch(var10000.hashCode()) {
case -1574182249:
if (var10000.equals("finalize()V")) {
return CGLIB$finalize$2$Proxy;
}
break;
case -1422510685:
if (var10000.equals("test()V")) {
return CGLIB$test$0$Proxy;
}
break;
case -909388886:
if (var10000.equals("say()V")) {
return CGLIB$say$1$Proxy;
}
break;
case -508378822:
if (var10000.equals("clone()Ljava/lang/Object;")) {
return CGLIB$clone$6$Proxy;
}
break;
case 1826985398:
if (var10000.equals("equals(Ljava/lang/Object;)Z")) {
return CGLIB$equals$3$Proxy;
}
break;
case 1913648695:
if (var10000.equals("toString()Ljava/lang/String;")) {
return CGLIB$toString$4$Proxy;
}
break;
case 1984935277:
if (var10000.equals("hashCode()I")) {
return CGLIB$hashCode$5$Proxy;
}
}
return null;
}
public Student$$EnhancerByCGLIB$$2276c04() {
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) {
Student$$EnhancerByCGLIB$$2276c04 var1 = (Student$$EnhancerByCGLIB$$2276c04)var0;
if (!var1.CGLIB$BOUND) {
var1.CGLIB$BOUND = true;
Object var10000 = CGLIB$THREAD_CALLBACKS.get();
if (var10000 == null) {
var10000 = CGLIB$STATIC_CALLBACKS;
if (CGLIB$STATIC_CALLBACKS == null) {
return;
}
}
var1.CGLIB$CALLBACK_0 = (MethodInterceptor)((Callback[])var10000)[0];
}
}
public Object newInstance(Callback[] var1) {
CGLIB$SET_THREAD_CALLBACKS(var1);
Student$$EnhancerByCGLIB$$2276c04 var10000 = new Student$$EnhancerByCGLIB$$2276c04();
CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
return var10000;
}
public Object newInstance(Callback var1) {
CGLIB$SET_THREAD_CALLBACKS(new Callback[]{var1});
Student$$EnhancerByCGLIB$$2276c04 var10000 = new Student$$EnhancerByCGLIB$$2276c04();
CGLIB$SET_THREAD_CALLBACKS((Callback[])null);
return var10000;
}
public Object newInstance(Class[] var1, Object[] var2, Callback[] var3) {
CGLIB$SET_THREAD_CALLBACKS(var3);
Student$$EnhancerByCGLIB$$2276c04 var10000 = new Student$$EnhancerByCGLIB$$2276c04;
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();
}
}
委托类继承了目标类，并且实现了目标类的所有方法、
可以看出Cglib生的字节码继承所有的父类方法， 对于每个方法,会进入切面处理器
以say方法为例
public final void say() {
MethodInterceptor var10000 = this.CGLIB$CALLBACK_0;
if (this.CGLIB$CALLBACK_0 == null) {
CGLIB$BIND_CALLBACKS(this);
var10000 = this.CGLIB$CALLBACK_0;
}
if (var10000 != null) {
var10000.intercept(this, CGLIB$say$1$Method, CGLIB$emptyArgs, CGLIB$say$1$Proxy);
} else {
super.say();
}
}
如果委托的代理类里的MethodInterceptor为空，那么直接直接执行父类，否则执行切面
进入切面方法
@Override
public Object intercept(Object obj, Method method, Object[] args,
MethodProxy methodProxy) throws Throwable {
System.out.println("===============");
return methodProxy.invokeSuper(obj, args);
}
参数1 委托代理类
参数2 被代理类的执行方法
参数3 方法参数
参数4 代理类方法MethodProxy可以进行invoke和invokeSuper再次对代理类进行执行
看下MethodProxy中invokeSuper方法
public Object invokeSuper(Object obj, Object[] args) throws Throwable {
try {
this.init();
MethodProxy.FastClassInfo fci = this.fastClassInfo;
return fci.f2.invoke(fci.i2, obj, args);
} catch (InvocationTargetException var4) {
throw var4.getTargetException();
}
}
通过fastClass执行实例的方法
和invoke方法的区别
public Object invoke(Object obj, Object[] args) throws Throwable {
try {
this.init();
MethodProxy.FastClassInfo fci = this.fastClassInfo;
return fci.f1.invoke(fci.i1, obj, args);
} catch (InvocationTargetException var4) {
throw var4.getTargetException();
} catch (IllegalArgumentException var5) {
if (this.fastClassInfo.i1 < 0) {
throw new IllegalArgumentException("Protected method: " + this.sig1);
} else {
throw var5;
}
}
}
区别是两者都使用的是FastClassInfo进行invoke，区别是i1调用的是委托类的对应方法，而i2调用的是父类对应方法
注意如果使用invoke继续调用代理类中的方法，走代理逻辑，那么又会进入方法拦截器，发生四递归，导致堆栈溢出。一般情况下都会使用invokeSuper方法
fastClass机制介绍
MethodProxy执行invoke和invokeSuper之后，会分别执行对应的fastClass
Jdk动态代理的拦截对象是通过反射的机制来调用被拦截实例方法的，反射的效率比较低，所以cglib采用了FastClass的机制来实现对被拦截方法的调用。FastClass机制就是对一个类的方法建立索引，调用方法时根据方法的签名来计算索引，通过索引来直接调用相应的方法。
这也就是为什么CGLIB生成的动态代理会包含3个class文件的原因，其中一个是生成的代理类，另外两个类都是FastClass机制需要的。另外两个类都继承了FastClass这个类。其中一个class为生成的代理类中的每个方法建立了索引（invoke方法执行），另外一个则为我们被代理类的所有方法包含其父类的方法建立了索引（invokeSuper方法执行）。
下面这个就是为被代理类中的方法建立的索引。
package daili.cglib;
import daili.cglib.Student..EnhancerByCGLIB..2276c04;
import java.lang.reflect.InvocationTargetException;
import net.sf.cglib.core.Signature;
import net.sf.cglib.proxy.Callback;
import net.sf.cglib.reflect.FastClass;
public class Student$$EnhancerByCGLIB$$2276c04$$FastClassByCGLIB$$6504760b extends FastClass {
public Student$$EnhancerByCGLIB$$2276c04$$FastClassByCGLIB$$6504760b(Class var1) {
super(var1);
}
public int getIndex(Signature var1) {
String var10000 = var1.toString();
switch(var10000.hashCode()) {
case -2071771415:
if (var10000.equals("CGLIB$clone$6()Ljava/lang/Object;")) {
return 21;
}
break;
case -2055565910:
if (var10000.equals("CGLIB$SET_THREAD_CALLBACKS([Lnet/sf/cglib/proxy/Callback;)V")) {
return 10;
}
break;
case -1725733088:
if (var10000.equals("getClass()Ljava/lang/Class;")) {
return 26;
}
break;
case -1663710620:
if (var10000.equals("CGLIB$equals$3(Ljava/lang/Object;)Z")) {
return 19;
}
break;
case -1659809612:
if (var10000.equals("CGLIB$test$0()V")) {
return 20;
}
break;
case -1457535688:
if (var10000.equals("CGLIB$STATICHOOK1()V")) {
return 22;
}
break;
case -1422510685:
if (var10000.equals("test()V")) {
return 6;
}
break;
case -1411783143:
if (var10000.equals("CGLIB$hashCode$5()I")) {
return 18;
}
break;
case -1026001249:
if (var10000.equals("wait(JI)V")) {
return 24;
}
break;
case -909388886:
if (var10000.equals("say()V")) {
return 7;
}
break;
case -894172689:
if (var10000.equals("newInstance(Lnet/sf/cglib/proxy/Callback;)Ljava/lang/Object;")) {
return 4;
}
break;
case -623122092:
if (var10000.equals("CGLIB$findMethodProxy(Lnet/sf/cglib/core/Signature;)Lnet/sf/cglib/proxy/MethodProxy;")) {
return 14;
}
break;
case -419626537:
if (var10000.equals("setCallbacks([Lnet/sf/cglib/proxy/Callback;)V")) {
return 9;
}
break;
case 243996900:
if (var10000.equals("wait(J)V")) {
return 25;
}
break;
case 560567118:
if (var10000.equals("setCallback(ILnet/sf/cglib/proxy/Callback;)V")) {
return 8;
}
break;
case 811063227:
if (var10000.equals("newInstance([Ljava/lang/Class;[Ljava/lang/Object;[Lnet/sf/cglib/proxy/Callback;)Ljava/lang/Object;")) {
return 5;
}
break;
case 946854621:
if (var10000.equals("notifyAll()V")) {
return 28;
}
break;
case 973717575:
if (var10000.equals("getCallbacks()[Lnet/sf/cglib/proxy/Callback;")) {
return 12;
}
break;
case 1116248544:
if (var10000.equals("wait()V")) {
return 23;
}
break;
case 1221173700:
if (var10000.equals("newInstance([Lnet/sf/cglib/proxy/Callback;)Ljava/lang/Object;")) {
return 3;
}
break;
case 1230699260:
if (var10000.equals("getCallback(I)Lnet/sf/cglib/proxy/Callback;")) {
return 13;
}
break;
case 1365107430:
if (var10000.equals("CGLIB$finalize$2()V")) {
return 16;
}
break;
case 1540724864:
if (var10000.equals("CGLIB$say$1()V")) {
return 15;
}
break;
case 1584330438:
if (var10000.equals("CGLIB$SET_STATIC_CALLBACKS([Lnet/sf/cglib/proxy/Callback;)V")) {
return 11;
}
break;
case 1729170762:
if (var10000.equals("CGLIB$toString$4()Ljava/lang/String;")) {
return 17;
}
break;
case 1826985398:
if (var10000.equals("equals(Ljava/lang/Object;)Z")) {
return 0;
}
break;
case 1902039948:
if (var10000.equals("notify()V")) {
return 27;
}
break;
case 1913648695:
if (var10000.equals("toString()Ljava/lang/String;")) {
return 1;
}
break;
case 1984935277:
if (var10000.equals("hashCode()I")) {
return 2;
}
}
return -1;
}
public int getIndex(String var1, Class[] var2) {
switch(var1.hashCode()) {
case -2083498449:
if (var1.equals("CGLIB$finalize$2")) {
switch(var2.length) {
case 0:
return 16;
}
}
break;
case -1776922004:
if (var1.equals("toString")) {
switch(var2.length) {
case 0:
return 1;
}
}
break;
case -1295482945:
if (var1.equals("equals")) {
switch(var2.length) {
case 1:
if (var2[0].getName().equals("java.lang.Object")) {
return 0;
}
}
}
break;
case -1053468136:
if (var1.equals("getCallbacks")) {
switch(var2.length) {
case 0:
return 12;
}
}
break;
case -1039689911:
if (var1.equals("notify")) {
switch(var2.length) {
case 0:
return 27;
}
}
break;
case -124978607:
if (var1.equals("CGLIB$equals$3")) {
switch(var2.length) {
case 1:
if (var2[0].getName().equals("java.lang.Object")) {
return 19;
}
}
}
break;
case -60403779:
if (var1.equals("CGLIB$SET_STATIC_CALLBACKS")) {
switch(var2.length) {
case 1:
if (var2[0].getName().equals("[Lnet.sf.cglib.proxy.Callback;")) {
return 11;
}
}
}
break;
case -29025553:
if (var1.equals("CGLIB$hashCode$5")) {
switch(var2.length) {
case 0:
return 18;
}
}
break;
case 113643:
if (var1.equals("say")) {
switch(var2.length) {
case 0:
return 7;
}
}
break;
case 3556498:
if (var1.equals("test")) {
switch(var2.length) {
case 0:
return 6;
}
}
break;
case 3641717:
if (var1.equals("wait")) {
switch(var2.length) {
case 0:
return 23;
case 1:
if (var2[0].getName().equals("long")) {
return 25;
}
break;
case 2:
if (var2[0].getName().equals("long") && var2[1].getName().equals("int")) {
return 24;
}
}
}
break;
case 85179481:
if (var1.equals("CGLIB$SET_THREAD_CALLBACKS")) {
switch(var2.length) {
case 1:
if (var2[0].getName().equals("[Lnet.sf.cglib.proxy.Callback;")) {
return 10;
}
}
}
break;
case 147696667:
if (var1.equals("hashCode")) {
switch(var2.length) {
case 0:
return 2;
}
}
break;
case 161998109:
if (var1.equals("CGLIB$STATICHOOK1")) {
switch(var2.length) {
case 0:
return 22;
}
}
break;
case 495524492:
if (var1.equals("setCallbacks")) {
switch(var2.length) {
case 1:
if (var2[0].getName().equals("[Lnet.sf.cglib.proxy.Callback;")) {
return 9;
}
}
}
break;
case 543320865:
if (var1.equals("CGLIB$test$0")) {
switch(var2.length) {
case 0:
return 20;
}
}
break;
case 1124865749:
if (var1.equals("CGLIB$say$1")) {
switch(var2.length) {
case 0:
return 15;
}
}
break;
case 1154623345:
if (var1.equals("CGLIB$findMethodProxy")) {
switch(var2.length) {
case 1:
if (var2[0].getName().equals("net.sf.cglib.core.Signature")) {
return 14;
}
}
}
break;
case 1543336191:
if (var1.equals("CGLIB$toString$4")) {
switch(var2.length) {
case 0:
return 17;
}
}
break;
case 1811874389:
if (var1.equals("newInstance")) {
switch(var2.length) {
case 1:
String var10001 = var2[0].getName();
switch(var10001.hashCode()) {
case -845341380:
if (var10001.equals("net.sf.cglib.proxy.Callback")) {
return 4;
}
break;
case 1730110032:
if (var10001.equals("[Lnet.sf.cglib.proxy.Callback;")) {
return 3;
}
}
case 2:
default:
break;
case 3:
if (var2[0].getName().equals("[Ljava.lang.Class;") && var2[1].getName().equals("[Ljava.lang.Object;") && var2[2].getName().equals("[Lnet.sf.cglib.proxy.Callback;")) {
return 5;
}
}
}
break;
case 1817099975:
if (var1.equals("setCallback")) {
switch(var2.length) {
case 2:
if (var2[0].getName().equals("int") && var2[1].getName().equals("net.sf.cglib.proxy.Callback")) {
return 8;
}
}
}
break;
case 1902066072:
if (var1.equals("notifyAll")) {
switch(var2.length) {
case 0:
return 28;
}
}
break;
case 1905679803:
if (var1.equals("getCallback")) {
switch(var2.length) {
case 1:
if (var2[0].getName().equals("int")) {
return 13;
}
}
}
break;
case 1950568386:
if (var1.equals("getClass")) {
switch(var2.length) {
case 0:
return 26;
}
}
break;
case 1951977612:
if (var1.equals("CGLIB$clone$6")) {
switch(var2.length) {
case 0:
return 21;
}
}
}
return -1;
}
public int getIndex(Class[] var1) {
switch(var1.length) {
case 0:
return 0;
default:
return -1;
}
}
public Object invoke(int var1, Object var2, Object[] var3) throws InvocationTargetException {
2276c04 var10000 = (2276c04)var2;
int var10001 = var1;
try {
switch(var10001) {
case 0:
return new Boolean(var10000.equals(var3[0]));
case 1:
return var10000.toString();
case 2:
return new Integer(var10000.hashCode());
case 3:
return var10000.newInstance((Callback[])var3[0]);
case 4:
return var10000.newInstance((Callback)var3[0]);
case 5:
return var10000.newInstance((Class[])var3[0], (Object[])var3[1], (Callback[])var3[2]);
case 6:
var10000.test();
return null;
case 7:
var10000.say();
return null;
case 8:
var10000.setCallback(((Number)var3[0]).intValue(), (Callback)var3[1]);
return null;
case 9:
var10000.setCallbacks((Callback[])var3[0]);
return null;
case 10:
2276c04.CGLIB$SET_THREAD_CALLBACKS((Callback[])var3[0]);
return null;
case 11:
2276c04.CGLIB$SET_STATIC_CALLBACKS((Callback[])var3[0]);
return null;
case 12:
return var10000.getCallbacks();
case 13:
return var10000.getCallback(((Number)var3[0]).intValue());
case 14:
return 2276c04.CGLIB$findMethodProxy((Signature)var3[0]);
case 15:
var10000.CGLIB$say$1();
return null;
case 16:
var10000.CGLIB$finalize$2();
return null;
case 17:
return var10000.CGLIB$toString$4();
case 18:
return new Integer(var10000.CGLIB$hashCode$5());
case 19:
return new Boolean(var10000.CGLIB$equals$3(var3[0]));
case 20:
var10000.CGLIB$test$0();
return null;
case 21:
return var10000.CGLIB$clone$6();
case 22:
2276c04.CGLIB$STATICHOOK1();
return null;
case 23:
var10000.wait();
return null;
case 24:
var10000.wait(((Number)var3[0]).longValue(), ((Number)var3[1]).intValue());
return null;
case 25:
var10000.wait(((Number)var3[0]).longValue());
return null;
case 26:
return var10000.getClass();
case 27:
var10000.notify();
return null;
case 28:
var10000.notifyAll();
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 {
2276c04 var10000 = new 2276c04;
2276c04 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 28;
}
}
分别看两种fastClass的invoke方法
执行代理类
public Object invoke(int var1, Object var2, Object[] var3) throws InvocationTargetException {
Student var10000 = (Student)var2;
int var10001 = var1;
try {
switch(var10001) {
····················
var10000.say();
return null;
case 3:
var10000.setId(((Number)var3[0]).intValue());
return null;
case 4:
var10000.setNo((String)var3[0]);
return null;
case 5:
return var10000.getMoney();
case 6:
var10000.setMoney((BigDecimal)var3[0]);
return null;
case 7:
····················
}
执行代理类，又会走一遍MethodInterceptor拦截器的逻辑。
执行父类的fastclass
public Object invoke(int var1, Object var2, Object[] var3) throws InvocationTargetException {
919efa98 var10000 = (919efa98)var2;
int var10001 = var1;
try {
switch(var10001) {
case 0:
var10000.CGLIB$say$2();
return null;
case 34:
return var10000.CGLIB$getNo$7();
case 35:
var10000.CGLIB$setMoney$6((BigDecimal)var3[0]);
return null;
case 36:
var10000.CGLIB$setId$3(((Number)var3[0]).intValue());
return null;
case 37:
var10000.CGLIB$setNo$4((String)var3[0]);
return null;
case 38:
var10000.CGLIB$test$1();
return null;
}
这里不是直接调用方法，而是一个奇怪的方法名
final void CGLIB$say$2() {
super.say();
}
代理类直接调用父类的实现。
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