CGlib简单介绍
CGlib概述：
cglib（Code Generation Library）是一个强大的,高性能,高质量的Code生成类库。它可以在运行期扩展Java类与实现Java接口。
cglib封装了asm，可以在运行期动态生成新的class。
cglib用于AOP，jdk中的proxy必须基于接口，cglib却没有这个限制。
CGlib应用：
以一个实例在简单介绍下cglib的应用。
我们模拟一个虚拟的场景，关于信息的管理。
1）原始需求是任何人可以操作信息的create，update，delete，query操作。
InfoManager.java－－封装对信息的操作
public class InfoManager {
// 模拟查询操作
public void query() {
System.out.println("query");
}
// 模拟创建操作
public void create() {
System.out.println("create");
}
// 模拟更新操作
public void update() {
System.out.println("update");
}
// 模拟删除操作
public void delete() {
System.out.println("delete");
}
}
InfoManagerFactory.java－－工厂类// 模拟查询操作
public void query() {
System.out.println("query");
}
// 模拟创建操作
public void create() {
System.out.println("create");
}
// 模拟更新操作
public void update() {
System.out.println("update");
}
// 模拟删除操作
public void delete() {
System.out.println("delete");
}
}
public class InfoManagerFactory {
private static InfoManager manger = new InfoManager();
/**
* 创建原始的InfoManager
*
* @return
*/
public static InfoManager getInstance() {
return manger;
}
}
client.java－－供客户端调用private static InfoManager manger = new InfoManager();
/**
* 创建原始的InfoManager
*
* @return
*/
public static InfoManager getInstance() {
return manger;
}
}
public class Client {
public static void main(String[] args) {
Client c = new Client();
c.anyonecanManager();
}
/**
* 模拟：没有任何权限要求，任何人都可以操作
*/
public void anyonecanManager() {
System.out.println("any one can do manager");
InfoManager manager = InfoManagerFactory.getInstance();
doCRUD(manager);
separatorLine();
}
/**
* 对Info做增加／更新／删除／查询操作
*
* @param manager
*/
private void doCRUD(InfoManager manager) {
manager.create();
manager.update();
manager.delete();
manager.query();
}
/**
* 加一个分隔行，用于区分
*/
private void separatorLine() {
System.out.println("################################");
}
}
至此，没有涉及到cglib的内容，因为需求太简单了，但是接下来，需求发生了改变，要求：public static void main(String[] args) {
Client c = new Client();
c.anyonecanManager();
}
/**
* 模拟：没有任何权限要求，任何人都可以操作
*/
public void anyonecanManager() {
System.out.println("any one can do manager");
InfoManager manager = InfoManagerFactory.getInstance();
doCRUD(manager);
separatorLine();
}
/**
* 对Info做增加／更新／删除／查询操作
*
* @param manager
*/
private void doCRUD(InfoManager manager) {
manager.create();
manager.update();
manager.delete();
manager.query();
}
/**
* 加一个分隔行，用于区分
*/
private void separatorLine() {
System.out.println("################################");
}
}
2）只有一个叫“maurice”的用户登录，才允许对信息进行create，update，delete，query的操作。
怎么办？难道在每个方法前，都加上一个权限判断吗？这样重复逻辑太多了，于是乎想到了Proxy（代理模式），但是原先的InfoManager也没有实现接口，不能采用jdk的proxy。那么cglib在这边就要隆重登场。
一旦使用cgblig，只需要添加一个MethodInterceptor的类以及修改factory代码就可以实现这个需求。
AuthProxy.java－－权限校验代理类
public class AuthProxy implements MethodInterceptor {
private String name; // 会员登录名
public AuthProxy(String name) {
this.name = name;
}
/**
* 权限校验，如果会员名为:maurice，则有权限做操作，否则提示没有权限
*/
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
if (!"maurice".equals(this.name)) {
System.out.println("AuthProxy:you have no permits to do manager!");
return null;
}
return proxy.invokeSuper(obj, args);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
InfoManagerFactory.java－－代码变动如下：private String name; // 会员登录名
public AuthProxy(String name) {
this.name = name;
}
/**
* 权限校验，如果会员名为:maurice，则有权限做操作，否则提示没有权限
*/
@Override
public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable {
if (!"maurice".equals(this.name)) {
System.out.println("AuthProxy:you have no permits to do manager!");
return null;
}
return proxy.invokeSuper(obj, args);
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
public class InfoManagerFactory {
/**
* 创建带有权限检验的InfoManager
*
* @param auth
* @return
*/
public static InfoManager getAuthInstance(AuthProxy auth) {
Enhancer enhancer = new Enhancer();
enhancer.setSuperclass(InfoManager.class);
enhancer.setCallback(auth);
return (InfoManager) enhancer.create();
}
}
client.java－－代码修改如下/**
* 创建带有权限检验的InfoManager
*
* @param auth
* @return
*/
public static InfoManager getAuthInstance(AuthProxy auth) {
Enhancer enhancer = new Enhancer();
enhancer.setSuperclass(InfoManager.class);
enhancer.setCallback(auth);
return (InfoManager) enhancer.create();
}
}
public class Client {
public static void main(String[] args) {
Client c = new Client();
c.haveNoAuthManager();
c.haveAuthManager();
}
/**
* 模拟：登录会员没有权限
*/
public void haveNoAuthManager() {
System.out.println("the loginer's name is not maurice,so have no permits do manager
");
InfoManager noAuthManager = InfoManagerFactory.getAuthInstance(new AuthProxy("maurice1"));
doCRUD(noAuthManager);
separatorLine();
}
/**
* 模拟：登录会员有权限
*/
public void haveAuthManager() {
System.out.println("the loginer's name is maurice,so have permits do manager");
InfoManager authManager = InfoManagerFactory.getAuthInstance(new AuthProxy("maurice"));
doCRUD(authManager);
separatorLine();
}
/**
* 对Info做增加／更新／删除／查询操作
*
* @param manager
*/
private void doCRUD(InfoManager manager) {
manager.create();
manager.update();
manager.delete();
manager.query();
}
/**
* 加一个分隔行，用于区分
*/
private void separatorLine() {
System.out.println("################################");
}
}
执行下代码,发现这时client端中已经加上了权限校验。public static void main(String[] args) {
Client c = new Client();
c.haveNoAuthManager();
c.haveAuthManager();
}
/**
* 模拟：登录会员没有权限
*/
public void haveNoAuthManager() {
System.out.println("the loginer's name is not maurice,so have no permits do manager
");InfoManager noAuthManager = InfoManagerFactory.getAuthInstance(new AuthProxy("maurice1"));
doCRUD(noAuthManager);
separatorLine();
}
/**
* 模拟：登录会员有权限
*/
public void haveAuthManager() {
System.out.println("the loginer's name is maurice,so have permits do manager
");InfoManager authManager = InfoManagerFactory.getAuthInstance(new AuthProxy("maurice"));
doCRUD(authManager);
separatorLine();
}
/**
* 对Info做增加／更新／删除／查询操作
*
* @param manager
*/
private void doCRUD(InfoManager manager) {
manager.create();
manager.update();
manager.delete();
manager.query();
}
/**
* 加一个分隔行，用于区分
*/
private void separatorLine() {
System.out.println("################################");
}
}
同样是InfoManager，为什么这时能多了权限的判断呢？Factory中enhancer.create()返回的到底是什么对象呢？这个疑问将在第三部分CGlib中解释。
这边的代码,其实是介绍了cglib中的enhancer功能.
到这里，参照上面的代码，就可以使用cglib带来的aop功能了。但是为了更多介绍下cglib的功能，模拟需求再次发生变化：
3）由于query功能用户maurice才能使用，招来其他用户的强烈的抱怨，所以权限再次变更，只有create，update，delete，才需要权限保护,query任何人都可以使用。
怎么办？采用AuthProxy，使得InfoManager中的所有方法都被代理，加上了权限的判断。当然，最容易想到的办法，就是在AuthProxy的intercept的方法中再做下判断，如果代理的method是query，不需要权限验证。这么做，可以，但是一旦逻辑比较复杂的时候，intercept这个方法要做的事情会很多，逻辑会异常的复杂。
幸好，cglib还提供了CallbackFilter。使用CallbackFilter，可以明确表明，被代理的类（InfoManager）中不同的方法，被哪个拦截器（interceptor)拦截。
AuthProxyFilter.java
public class AuthProxyFilter implements CallbackFilter {
private static final int AUTH_NEED = 0;
private static final int AUTH_NOT_NEED = 1;
/**
* <pre>
* 选择使用的proxy
* 如果调用query函数，则使用第二个proxy
* 否则，使用第一个proxy
* </pre>
*/
@Override
public int accept(Method method) {
if ("query".equals(method.getName())) {
return AUTH_NOT_NEED;
}
return AUTH_NEED;
}
}
这段代码什么意思？其中的accept方法的意思是说，如果代理的方法是query()，那么使用第二个拦截器去拦截，如果代理的方法不是query(),那么使用第一个拦截器去拦截。所以我们只要再写一个拦截器，不做权限校验就行了。（其实，cglib中的NoOp.INSTANCE就是一个空的拦截器，只要配置上这个就可以了。）private static final int AUTH_NEED = 0;
private static final int AUTH_NOT_NEED = 1;
/**
* <pre>
* 选择使用的proxy
* 如果调用query函数，则使用第二个proxy
* 否则，使用第一个proxy
* </pre>
*/
@Override
public int accept(Method method) {
if ("query".equals(method.getName())) {
return AUTH_NOT_NEED;
}
return AUTH_NEED;
}
}
InfoManagerFactory.java－－代码修改如下：（配置不同的拦截器和filter）
public class InfoManagerFactory {
/**
* 创建不同权限要求的InfoManager
*
* @param auth
* @return
*/
public static InfoManager getSelectivityAuthInstance(AuthProxy auth) {
Enhancer enhancer = new Enhancer();
enhancer.setSuperclass(InfoManager.class);
enhancer.setCallbacks(new Callback[] { auth, NoOp.INSTANCE });
enhancer.setCallbackFilter(new AuthProxyFilter());
return (InfoManager) enhancer.create();
}
}
记住：setCallbacks中的拦截器(interceptor)的顺序，一定要和CallbackFilter里面指定的顺序一致！！切忌。/**
* 创建不同权限要求的InfoManager
*
* @param auth
* @return
*/
public static InfoManager getSelectivityAuthInstance(AuthProxy auth) {
Enhancer enhancer = new Enhancer();
enhancer.setSuperclass(InfoManager.class);
enhancer.setCallbacks(new Callback[] { auth, NoOp.INSTANCE });
enhancer.setCallbackFilter(new AuthProxyFilter());
return (InfoManager) enhancer.create();
}
}
Client.java
public class Client {
public static void main(String[] args) {
Client c = new Client();
c.selectivityAuthManager();
}
/**
* 模拟：没有权限的会员，可以作查询操作
*/
public void selectivityAuthManager() {
System.out.println("the loginer's name is not maurice,so have no permits do manager except do query operator");
InfoManager authManager = InfoManagerFactory.getSelectivityAuthInstance(new AuthProxy("maurice1"));
doCRUD(authManager);
separatorLine();
}
/**
* 对Info做增加／更新／删除／查询操作
*
* @param manager
*/
private void doCRUD(InfoManager manager) {
manager.create();
manager.update();
manager.delete();
manager.query();
}
/**
* 加一个分隔行，用于区分
*/
private void separatorLine() {
System.out.println("################################");
}
}
此时，对于query的权限校验已经被去掉了。public static void main(String[] args) {
Client c = new Client();
c.selectivityAuthManager();
}
/**
* 模拟：没有权限的会员，可以作查询操作
*/
public void selectivityAuthManager() {
System.out.println("the loginer's name is not maurice,so have no permits do manager except do query operator
");InfoManager authManager = InfoManagerFactory.getSelectivityAuthInstance(new AuthProxy("maurice1"));
doCRUD(authManager);
separatorLine();
}
/**
* 对Info做增加／更新／删除／查询操作
*
* @param manager
*/
private void doCRUD(InfoManager manager) {
manager.create();
manager.update();
manager.delete();
manager.query();
}
/**
* 加一个分隔行，用于区分
*/
private void separatorLine() {
System.out.println("################################");
}
}
通过一个模拟需求，简单介绍了cglib aop功能的使用。
CGlib应用非常广，在spring，hibernate等框架中，被大量的使用。
CGlib原理：
cglib神奇吗？其实一旦了解cglib enhancer的原理，一切就真相大白了。
刚才在第二部分中，有个疑问：enhancer.create()到底返回了什么对象？
其实在刚才的例子中，cglib在代码运行期，动态生成了InfoManager的子类，并且根据CallbackFilter的accept方法，覆写了InfoManager中的所有方法－－去执行相应的MethodInterceptor的intercept方法。
有兴趣的朋友可以看看我反编译的InfoManager的子类，就可以很明白知道具体的实现了。（需要有耐心才可以）
InfoManager$$EnhancerByCGLIB$$de624598.jad
// Decompiled by Jad v1.5.8e. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/kpdus/jad.html
// Decompiler options: packimports(3)
// Source File Name: <generated>
package cn.eulic.codelab.cglib;
import java.lang.reflect.Method;
import net.sf.cglib.core.Signature;
import net.sf.cglib.proxy.*;
// Referenced classes of package cn.eulic.codelab.cglib:
// InfoManager
public class CGLIB.BIND_CALLBACKS extends InfoManager
implements Factory
{
static void CGLIB$STATICHOOK1()
{
Class class1;
ClassLoader classloader;
CGLIB$THREAD_CALLBACKS = new ThreadLocal();
classloader = (class1 = Class.forName("cn.eulic.codelab.cglib.InfoManager$$EnhancerByCGLIB$$de624598")).getClassLoader();
classloader;
CGLIB$emptyArgs = new Object[0];
CGLIB$delete$0$Proxy = MethodProxy.create(classloader, (CGLIB$delete$0$Method = Class.forName("cn.eulic.codelab.cglib.InfoManager").getDeclaredMethod("delete", new Class[0])).getDeclaringClass(), class1, "()V", "delete", "CGLIB$delete$0");
CGLIB$create$1$Proxy = MethodProxy.create(classloader, (CGLIB$create$1$Method = Class.forName("cn.eulic.codelab.cglib.InfoManager").getDeclaredMethod("create", new Class[0])).getDeclaringClass(), class1, "()V", "create", "CGLIB$create$1");
CGLIB$query$2$Proxy = MethodProxy.create(classloader, (CGLIB$query$2$Method = Class.forName("cn.eulic.codelab.cglib.InfoManager").getDeclaredMethod("query", new Class[0])).getDeclaringClass(), class1, "()V", "query", "CGLIB$query$2");
CGLIB$update$3$Proxy = MethodProxy.create(classloader, (CGLIB$update$3$Method = Class.forName("cn.eulic.codelab.cglib.InfoManager").getDeclaredMethod("update", new Class[0])).getDeclaringClass(), class1, "()V", "update", "CGLIB$update$3");
CGLIB$finalize$4$Proxy = MethodProxy.create(classloader, (CGLIB$finalize$4$Method = Class.forName("java.lang.Object").getDeclaredMethod("finalize", new Class[0])).getDeclaringClass(), class1, "()V", "finalize", "CGLIB$finalize$4");
CGLIB$hashCode$5$Proxy = MethodProxy.create(classloader, (CGLIB$hashCode$5$Method = Class.forName("java.lang.Object").getDeclaredMethod("hashCode", new Class[0])).getDeclaringClass(), class1, "()I", "hashCode", "CGLIB$hashCode$5");
CGLIB$clone$6$Proxy = MethodProxy.create(classloader, (CGLIB$clone$6$Method = Class.forName("java.lang.Object").getDeclaredMethod("clone", new Class[0])).getDeclaringClass(), class1, "()Ljava/lang/Object;", "clone", "CGLIB$clone$6");
CGLIB$equals$7$Proxy = MethodProxy.create(classloader, (CGLIB$equals$7$Method = Class.forName("java.lang.Object").getDeclaredMethod("equals", new Class[] {
Class.forName("java.lang.Object")
})).getDeclaringClass(), class1, "(Ljava/lang/Object;)Z", "equals", "CGLIB$equals$7");
CGLIB$toString$8$Proxy = MethodProxy.create(classloader, (CGLIB$toString$8$Method = Class.forName("java.lang.Object").getDeclaredMethod("toString", new Class[0])).getDeclaringClass(), class1, "()Ljava/lang/String;", "toString", "CGLIB$toString$8");
return;
}
final void CGLIB$delete$0()
{
super.delete();
}
public final void delete()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$delete$0$Method;
CGLIB$emptyArgs;
CGLIB$delete$0$Proxy;
intercept();
return;
super.delete();
return;
}
final void CGLIB$create$1()
{
super.create();
}
public final void create()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$create$1$Method;
CGLIB$emptyArgs;
CGLIB$create$1$Proxy;
intercept();
return;
super.create();
return;
}
final void CGLIB$query$2()
{
super.query();
}
public final void query()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$query$2$Method;
CGLIB$emptyArgs;
CGLIB$query$2$Proxy;
intercept();
return;
super.query();
return;
}
final void CGLIB$update$3()
{
super.update();
}
public final void update()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$update$3$Method;
CGLIB$emptyArgs;
CGLIB$update$3$Proxy;
intercept();
return;
super.update();
return;
}
final void CGLIB$finalize$4()
throws Throwable
{
super.finalize();
}
protected final void finalize()
throws Throwable
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$finalize$4$Method;
CGLIB$emptyArgs;
CGLIB$finalize$4$Proxy;
intercept();
return;
super.finalize();
return;
}
final int CGLIB$hashCode$5()
{
return super.hashCode();
}
public final int hashCode()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 52;
goto _L3 _L4
_L3:
this;
CGLIB$hashCode$5$Method;
CGLIB$emptyArgs;
CGLIB$hashCode$5$Proxy;
intercept();
JVM INSTR dup ;
JVM INSTR ifnonnull 45;
goto _L5 _L6
_L5:
JVM INSTR pop ;
0;
goto _L7
_L6:
(Number);
intValue();
_L7:
return;
_L4:
return super.hashCode();
}
final Object CGLIB$clone$6()
throws CloneNotSupportedException
{
return super.clone();
}
protected final Object clone()
throws CloneNotSupportedException
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
this;
CGLIB$clone$6$Method;
CGLIB$emptyArgs;
CGLIB$clone$6$Proxy;
intercept();
return;
_L4:
return super.clone();
}
final boolean CGLIB$equals$7(Object obj)
{
return super.equals(obj);
}
public final boolean equals(Object obj)
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 57;
goto _L3 _L4
_L3:
this;
CGLIB$equals$7$Method;
new Object[] {
obj
};
CGLIB$equals$7$Proxy;
intercept();
JVM INSTR dup ;
JVM INSTR ifnonnull 50;
goto _L5 _L6
_L5:
JVM INSTR pop ;
false;
goto _L7
_L6:
(Boolean);
booleanValue();
_L7:
return;
_L4:
return super.equals(obj);
}
final String CGLIB$toString$8()
{
return super.toString();
}
public final String toString()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 40;
goto _L3 _L4
_L3:
this;
CGLIB$toString$8$Method;
CGLIB$emptyArgs;
CGLIB$toString$8$Proxy;
intercept();
(String);
return;
_L4:
return super.toString();
}
public static MethodProxy CGLIB$findMethodProxy(Signature signature)
{
String s = signature.toString();
s;
s.hashCode();
JVM INSTR lookupswitch 9: default 200
// -1949253108: 92
// -1574182249: 104
// -1166709331: 116
// -508378822: 128
// -358764054: 140
// 598313209: 152
// 1826985398: 164
// 1913648695: 176
// 1984935277: 188;
goto _L1 _L2 _L3 _L4 _L5 _L6 _L7 _L8 _L9 _L10
_L2:
"update()V";
equals();
JVM INSTR ifeq 201;
goto _L11 _L12
_L12:
break MISSING_BLOCK_LABEL_201;
_L11:
return CGLIB$update$3$Proxy;
_L3:
"finalize()V";
equals();
JVM INSTR ifeq 201;
goto _L13 _L14
_L14:
break MISSING_BLOCK_LABEL_201;
_L13:
return CGLIB$finalize$4$Proxy;
_L4:
"query()V";
equals();
JVM INSTR ifeq 201;
goto _L15 _L16
_L16:
break MISSING_BLOCK_LABEL_201;
_L15:
return CGLIB$query$2$Proxy;
_L5:
"clone()Ljava/lang/Object;";
equals();
JVM INSTR ifeq 201;
goto _L17 _L18
_L18:
break MISSING_BLOCK_LABEL_201;
_L17:
return CGLIB$clone$6$Proxy;
_L6:
"delete()V";
equals();
JVM INSTR ifeq 201;
goto _L19 _L20
_L20:
break MISSING_BLOCK_LABEL_201;
_L19:
return CGLIB$delete$0$Proxy;
_L7:
"create()V";
equals();
JVM INSTR ifeq 201;
goto _L21 _L22
_L22:
break MISSING_BLOCK_LABEL_201;
_L21:
return CGLIB$create$1$Proxy;
_L8:
"equals(Ljava/lang/Object;)Z";
equals();
JVM INSTR ifeq 201;
goto _L23 _L24
_L24:
break MISSING_BLOCK_LABEL_201;
_L23:
return CGLIB$equals$7$Proxy;
_L9:
"toString()Ljava/lang/String;";
equals();
JVM INSTR ifeq 201;
goto _L25 _L26
_L26:
break MISSING_BLOCK_LABEL_201;
_L25:
return CGLIB$toString$8$Proxy;
_L10:
"hashCode()I";
equals();
JVM INSTR ifeq 201;
goto _L27 _L28
_L28:
break MISSING_BLOCK_LABEL_201;
_L27:
return CGLIB$hashCode$5$Proxy;
_L1:
JVM INSTR pop ;
return null;
}
public static void CGLIB$SET_THREAD_CALLBACKS(Callback acallback[])
{
CGLIB$THREAD_CALLBACKS.set(acallback);
}
public static void CGLIB$SET_STATIC_CALLBACKS(Callback acallback[])
{
CGLIB$STATIC_CALLBACKS = acallback;
}
private static final void CGLIB$BIND_CALLBACKS(Object obj)
{
CGLIB.STATIC_CALLBACKS static_callbacks = (CGLIB.STATIC_CALLBACKS)obj;
if(static_callbacks.CGLIB$BOUND) goto _L2; else goto _L1
_L1:
Object obj1;
static_callbacks.CGLIB$BOUND = true;
obj1 = CGLIB$THREAD_CALLBACKS.get();
obj1;
if(obj1 != null) goto _L4; else goto _L3
_L3:
JVM INSTR pop ;
CGLIB$STATIC_CALLBACKS;
if(CGLIB$STATIC_CALLBACKS != null) goto _L4; else goto _L5
_L5:
JVM INSTR pop ;
goto _L2
_L4:
(Callback[]);
static_callbacks;
JVM INSTR swap ;
0;
JVM INSTR aaload ;
(MethodInterceptor);
CGLIB$CALLBACK_0;
_L2:
}
public Object newInstance(Callback acallback[])
{
CGLIB$SET_THREAD_CALLBACKS(acallback);
CGLIB$SET_THREAD_CALLBACKS(null);
return new <init>();
}
public Object newInstance(Callback callback)
{
CGLIB$SET_THREAD_CALLBACKS(new Callback[] {
callback
});
CGLIB$SET_THREAD_CALLBACKS(null);
return new <init>();
}
public Object newInstance(Class aclass[], Object aobj[], Callback acallback[])
{
CGLIB$SET_THREAD_CALLBACKS(acallback);
JVM INSTR new #2 <Class InfoManager$$EnhancerByCGLIB$$de624598>;
JVM INSTR dup ;
aclass;
aclass.length;
JVM INSTR tableswitch 0 0: default 35
// 0 28;
goto _L1 _L2
_L2:
JVM INSTR pop ;
<init>();
goto _L3
_L1:
JVM INSTR pop ;
throw new IllegalArgumentException("Constructor not found");
_L3:
CGLIB$SET_THREAD_CALLBACKS(null);
return;
}
public Callback getCallback(int i)
{
CGLIB$BIND_CALLBACKS(this);
this;
i;
JVM INSTR tableswitch 0 0: default 30
// 0 24;
goto _L1 _L2
_L2:
CGLIB$CALLBACK_0;
goto _L3
_L1:
JVM INSTR pop ;
null;
_L3:
return;
}
public void setCallback(int i, Callback callback)
{
this;
callback;
i;
JVM INSTR tableswitch 0 0: default 29
// 0 20;
goto _L1 _L2
_L2:
(MethodInterceptor);
CGLIB$CALLBACK_0;
goto _L3
_L1:
JVM INSTR pop2 ;
_L3:
}
public Callback[] getCallbacks()
{
CGLIB$BIND_CALLBACKS(this);
this;
return (new Callback[] {
CGLIB$CALLBACK_0
});
}
public void setCallbacks(Callback acallback[])
{
this;
acallback;
JVM INSTR dup2 ;
0;
JVM INSTR aaload ;
(MethodInterceptor);
CGLIB$CALLBACK_0;
}
private boolean CGLIB$BOUND;
private static final ThreadLocal CGLIB$THREAD_CALLBACKS;
private static final Callback CGLIB$STATIC_CALLBACKS[];
private MethodInterceptor CGLIB$CALLBACK_0;
private static final Method CGLIB$delete$0$Method;
private static final MethodProxy CGLIB$delete$0$Proxy;
private static final Object CGLIB$emptyArgs[];
private static final Method CGLIB$create$1$Method;
private static final MethodProxy CGLIB$create$1$Proxy;
private static final Method CGLIB$query$2$Method;
private static final MethodProxy CGLIB$query$2$Proxy;
private static final Method CGLIB$update$3$Method;
private static final MethodProxy CGLIB$update$3$Proxy;
private static final Method CGLIB$finalize$4$Method;
private static final MethodProxy CGLIB$finalize$4$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;
private static final Method CGLIB$equals$7$Method;
private static final MethodProxy CGLIB$equals$7$Proxy;
private static final Method CGLIB$toString$8$Method;
private static final MethodProxy CGLIB$toString$8$Proxy;
static
{
CGLIB$STATICHOOK1();
}
public ()
{
CGLIB$BIND_CALLBACKS(this);
}
}
// Jad home page: http://www.geocities.com/kpdus/jad.html
// Decompiler options: packimports(3)
// Source File Name: <generated>
package cn.eulic.codelab.cglib;
import java.lang.reflect.Method;
import net.sf.cglib.core.Signature;
import net.sf.cglib.proxy.*;
// Referenced classes of package cn.eulic.codelab.cglib:
// InfoManager
public class CGLIB.BIND_CALLBACKS extends InfoManager
implements Factory
{
static void CGLIB$STATICHOOK1()
{
Class class1;
ClassLoader classloader;
CGLIB$THREAD_CALLBACKS = new ThreadLocal();
classloader = (class1 = Class.forName("cn.eulic.codelab.cglib.InfoManager$$EnhancerByCGLIB$$de624598")).getClassLoader();
classloader;
CGLIB$emptyArgs = new Object[0];
CGLIB$delete$0$Proxy = MethodProxy.create(classloader, (CGLIB$delete$0$Method = Class.forName("cn.eulic.codelab.cglib.InfoManager").getDeclaredMethod("delete", new Class[0])).getDeclaringClass(), class1, "()V", "delete", "CGLIB$delete$0");
CGLIB$create$1$Proxy = MethodProxy.create(classloader, (CGLIB$create$1$Method = Class.forName("cn.eulic.codelab.cglib.InfoManager").getDeclaredMethod("create", new Class[0])).getDeclaringClass(), class1, "()V", "create", "CGLIB$create$1");
CGLIB$query$2$Proxy = MethodProxy.create(classloader, (CGLIB$query$2$Method = Class.forName("cn.eulic.codelab.cglib.InfoManager").getDeclaredMethod("query", new Class[0])).getDeclaringClass(), class1, "()V", "query", "CGLIB$query$2");
CGLIB$update$3$Proxy = MethodProxy.create(classloader, (CGLIB$update$3$Method = Class.forName("cn.eulic.codelab.cglib.InfoManager").getDeclaredMethod("update", new Class[0])).getDeclaringClass(), class1, "()V", "update", "CGLIB$update$3");
CGLIB$finalize$4$Proxy = MethodProxy.create(classloader, (CGLIB$finalize$4$Method = Class.forName("java.lang.Object").getDeclaredMethod("finalize", new Class[0])).getDeclaringClass(), class1, "()V", "finalize", "CGLIB$finalize$4");
CGLIB$hashCode$5$Proxy = MethodProxy.create(classloader, (CGLIB$hashCode$5$Method = Class.forName("java.lang.Object").getDeclaredMethod("hashCode", new Class[0])).getDeclaringClass(), class1, "()I", "hashCode", "CGLIB$hashCode$5");
CGLIB$clone$6$Proxy = MethodProxy.create(classloader, (CGLIB$clone$6$Method = Class.forName("java.lang.Object").getDeclaredMethod("clone", new Class[0])).getDeclaringClass(), class1, "()Ljava/lang/Object;", "clone", "CGLIB$clone$6");
CGLIB$equals$7$Proxy = MethodProxy.create(classloader, (CGLIB$equals$7$Method = Class.forName("java.lang.Object").getDeclaredMethod("equals", new Class[] {
Class.forName("java.lang.Object")
})).getDeclaringClass(), class1, "(Ljava/lang/Object;)Z", "equals", "CGLIB$equals$7");
CGLIB$toString$8$Proxy = MethodProxy.create(classloader, (CGLIB$toString$8$Method = Class.forName("java.lang.Object").getDeclaredMethod("toString", new Class[0])).getDeclaringClass(), class1, "()Ljava/lang/String;", "toString", "CGLIB$toString$8");
return;
}
final void CGLIB$delete$0()
{
super.delete();
}
public final void delete()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$delete$0$Method;
CGLIB$emptyArgs;
CGLIB$delete$0$Proxy;
intercept();
return;
super.delete();
return;
}
final void CGLIB$create$1()
{
super.create();
}
public final void create()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$create$1$Method;
CGLIB$emptyArgs;
CGLIB$create$1$Proxy;
intercept();
return;
super.create();
return;
}
final void CGLIB$query$2()
{
super.query();
}
public final void query()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$query$2$Method;
CGLIB$emptyArgs;
CGLIB$query$2$Proxy;
intercept();
return;
super.query();
return;
}
final void CGLIB$update$3()
{
super.update();
}
public final void update()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$update$3$Method;
CGLIB$emptyArgs;
CGLIB$update$3$Proxy;
intercept();
return;
super.update();
return;
}
final void CGLIB$finalize$4()
throws Throwable
{
super.finalize();
}
protected final void finalize()
throws Throwable
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
break MISSING_BLOCK_LABEL_21;
_L4:
break MISSING_BLOCK_LABEL_37;
this;
CGLIB$finalize$4$Method;
CGLIB$emptyArgs;
CGLIB$finalize$4$Proxy;
intercept();
return;
super.finalize();
return;
}
final int CGLIB$hashCode$5()
{
return super.hashCode();
}
public final int hashCode()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 52;
goto _L3 _L4
_L3:
this;
CGLIB$hashCode$5$Method;
CGLIB$emptyArgs;
CGLIB$hashCode$5$Proxy;
intercept();
JVM INSTR dup ;
JVM INSTR ifnonnull 45;
goto _L5 _L6
_L5:
JVM INSTR pop ;
0;
goto _L7
_L6:
(Number);
intValue();
_L7:
return;
_L4:
return super.hashCode();
}
final Object CGLIB$clone$6()
throws CloneNotSupportedException
{
return super.clone();
}
protected final Object clone()
throws CloneNotSupportedException
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 37;
goto _L3 _L4
_L3:
this;
CGLIB$clone$6$Method;
CGLIB$emptyArgs;
CGLIB$clone$6$Proxy;
intercept();
return;
_L4:
return super.clone();
}
final boolean CGLIB$equals$7(Object obj)
{
return super.equals(obj);
}
public final boolean equals(Object obj)
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 57;
goto _L3 _L4
_L3:
this;
CGLIB$equals$7$Method;
new Object[] {
obj
};
CGLIB$equals$7$Proxy;
intercept();
JVM INSTR dup ;
JVM INSTR ifnonnull 50;
goto _L5 _L6
_L5:
JVM INSTR pop ;
false;
goto _L7
_L6:
(Boolean);
booleanValue();
_L7:
return;
_L4:
return super.equals(obj);
}
final String CGLIB$toString$8()
{
return super.toString();
}
public final String toString()
{
CGLIB$CALLBACK_0;
if(CGLIB$CALLBACK_0 != null) goto _L2; else goto _L1
_L1:
JVM INSTR pop ;
CGLIB$BIND_CALLBACKS(this);
CGLIB$CALLBACK_0;
_L2:
JVM INSTR dup ;
JVM INSTR ifnull 40;
goto _L3 _L4
_L3:
this;
CGLIB$toString$8$Method;
CGLIB$emptyArgs;
CGLIB$toString$8$Proxy;
intercept();
(String);
return;
_L4:
return super.toString();
}
public static MethodProxy CGLIB$findMethodProxy(Signature signature)
{
String s = signature.toString();
s;
s.hashCode();
JVM INSTR lookupswitch 9: default 200
// -1949253108: 92
// -1574182249: 104
// -1166709331: 116
// -508378822: 128
// -358764054: 140
// 598313209: 152
// 1826985398: 164
// 1913648695: 176
// 1984935277: 188;
goto _L1 _L2 _L3 _L4 _L5 _L6 _L7 _L8 _L9 _L10
_L2:
"update()V";
equals();
JVM INSTR ifeq 201;
goto _L11 _L12
_L12:
break MISSING_BLOCK_LABEL_201;
_L11:
return CGLIB$update$3$Proxy;
_L3:
"finalize()V";
equals();
JVM INSTR ifeq 201;
goto _L13 _L14
_L14:
break MISSING_BLOCK_LABEL_201;
_L13:
return CGLIB$finalize$4$Proxy;
_L4:
"query()V";
equals();
JVM INSTR ifeq 201;
goto _L15 _L16
_L16:
break MISSING_BLOCK_LABEL_201;
_L15:
return CGLIB$query$2$Proxy;
_L5:
"clone()Ljava/lang/Object;";
equals();
JVM INSTR ifeq 201;
goto _L17 _L18
_L18:
break MISSING_BLOCK_LABEL_201;
_L17:
return CGLIB$clone$6$Proxy;
_L6:
"delete()V";
equals();
JVM INSTR ifeq 201;
goto _L19 _L20
_L20:
break MISSING_BLOCK_LABEL_201;
_L19:
return CGLIB$delete$0$Proxy;
_L7:
"create()V";
equals();
JVM INSTR ifeq 201;
goto _L21 _L22
_L22:
break MISSING_BLOCK_LABEL_201;
_L21:
return CGLIB$create$1$Proxy;
_L8:
"equals(Ljava/lang/Object;)Z";
equals();
JVM INSTR ifeq 201;
goto _L23 _L24
_L24:
break MISSING_BLOCK_LABEL_201;
_L23:
return CGLIB$equals$7$Proxy;
_L9:
"toString()Ljava/lang/String;";
equals();
JVM INSTR ifeq 201;
goto _L25 _L26
_L26:
break MISSING_BLOCK_LABEL_201;
_L25:
return CGLIB$toString$8$Proxy;
_L10:
"hashCode()I";
equals();
JVM INSTR ifeq 201;
goto _L27 _L28
_L28:
break MISSING_BLOCK_LABEL_201;
_L27:
return CGLIB$hashCode$5$Proxy;
_L1:
JVM INSTR pop ;
return null;
}
public static void CGLIB$SET_THREAD_CALLBACKS(Callback acallback[])
{
CGLIB$THREAD_CALLBACKS.set(acallback);
}
public static void CGLIB$SET_STATIC_CALLBACKS(Callback acallback[])
{
CGLIB$STATIC_CALLBACKS = acallback;
}
private static final void CGLIB$BIND_CALLBACKS(Object obj)
{
CGLIB.STATIC_CALLBACKS static_callbacks = (CGLIB.STATIC_CALLBACKS)obj;
if(static_callbacks.CGLIB$BOUND) goto _L2; else goto _L1
_L1:
Object obj1;
static_callbacks.CGLIB$BOUND = true;
obj1 = CGLIB$THREAD_CALLBACKS.get();
obj1;
if(obj1 != null) goto _L4; else goto _L3
_L3:
JVM INSTR pop ;
CGLIB$STATIC_CALLBACKS;
if(CGLIB$STATIC_CALLBACKS != null) goto _L4; else goto _L5
_L5:
JVM INSTR pop ;
goto _L2
_L4:
(Callback[]);
static_callbacks;
JVM INSTR swap ;
0;
JVM INSTR aaload ;
(MethodInterceptor);
CGLIB$CALLBACK_0;
_L2:
}
public Object newInstance(Callback acallback[])
{
CGLIB$SET_THREAD_CALLBACKS(acallback);
CGLIB$SET_THREAD_CALLBACKS(null);
return new <init>();
}
public Object newInstance(Callback callback)
{
CGLIB$SET_THREAD_CALLBACKS(new Callback[] {
callback
});
CGLIB$SET_THREAD_CALLBACKS(null);
return new <init>();
}
public Object newInstance(Class aclass[], Object aobj[], Callback acallback[])
{
CGLIB$SET_THREAD_CALLBACKS(acallback);
JVM INSTR new #2 <Class InfoManager$$EnhancerByCGLIB$$de624598>;
JVM INSTR dup ;
aclass;
aclass.length;
JVM INSTR tableswitch 0 0: default 35
// 0 28;
goto _L1 _L2
_L2:
JVM INSTR pop ;
<init>();
goto _L3
_L1:
JVM INSTR pop ;
throw new IllegalArgumentException("Constructor not found");
_L3:
CGLIB$SET_THREAD_CALLBACKS(null);
return;
}
public Callback getCallback(int i)
{
CGLIB$BIND_CALLBACKS(this);
this;
i;
JVM INSTR tableswitch 0 0: default 30
// 0 24;
goto _L1 _L2
_L2:
CGLIB$CALLBACK_0;
goto _L3
_L1:
JVM INSTR pop ;
null;
_L3:
return;
}
public void setCallback(int i, Callback callback)
{
this;
callback;
i;
JVM INSTR tableswitch 0 0: default 29
// 0 20;
goto _L1 _L2
_L2:
(MethodInterceptor);
CGLIB$CALLBACK_0;
goto _L3
_L1:
JVM INSTR pop2 ;
_L3:
}
public Callback[] getCallbacks()
{
CGLIB$BIND_CALLBACKS(this);
this;
return (new Callback[] {
CGLIB$CALLBACK_0
});
}
public void setCallbacks(Callback acallback[])
{
this;
acallback;
JVM INSTR dup2 ;
0;
JVM INSTR aaload ;
(MethodInterceptor);
CGLIB$CALLBACK_0;
}
private boolean CGLIB$BOUND;
private static final ThreadLocal CGLIB$THREAD_CALLBACKS;
private static final Callback CGLIB$STATIC_CALLBACKS[];
private MethodInterceptor CGLIB$CALLBACK_0;
private static final Method CGLIB$delete$0$Method;
private static final MethodProxy CGLIB$delete$0$Proxy;
private static final Object CGLIB$emptyArgs[];
private static final Method CGLIB$create$1$Method;
private static final MethodProxy CGLIB$create$1$Proxy;
private static final Method CGLIB$query$2$Method;
private static final MethodProxy CGLIB$query$2$Proxy;
private static final Method CGLIB$update$3$Method;
private static final MethodProxy CGLIB$update$3$Proxy;
private static final Method CGLIB$finalize$4$Method;
private static final MethodProxy CGLIB$finalize$4$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;
private static final Method CGLIB$equals$7$Method;
private static final MethodProxy CGLIB$equals$7$Proxy;
private static final Method CGLIB$toString$8$Method;
private static final MethodProxy CGLIB$toString$8$Proxy;
static
{
CGLIB$STATICHOOK1();
}
public ()
{
CGLIB$BIND_CALLBACKS(this);
}
}
附件如下:
cglib
sample
