java 中动态代理（JDK，cglib）实例代码

java 动态代理实例详解

1.jdk动态代理

 
package com.sinosoft; 
 
 
public interface Apple { 
   
  public void phoneCall(); 
} 
 
 
 
 
package com.sinosoft; 
 
 
public class AppleImpl implements Apple { 
 
   
  @Override 
  public void phoneCall() { 
    System.out.println("打电话"); 
  } 
 
} 
 
 
 
 
 
 
package com.sinosoft; 
 
import java.lang.reflect.InvocationHandler; 
import java.lang.reflect.Method; 
 
 
public class DynamicProxy implements InvocationHandler{ 
  
   
  private Object object; 
   
  public DynamicProxy(Object object) { 
    this.object=object; 
  } 
   
  @Override 
  public Object invoke(Object proxy, Method method, Object[] args) throws Throwable { 
    Object result = method.invoke(object, args); 
    return result; 
  } 
 
} 
 
 
 
 
 
 
 
package com.sinosoft; 
 
import java.lang.reflect.Proxy; 
 
 
public class testDynamicProxy { 
  public static void main(String[] args) { 
    //1.创建接口的实现类 
    Apple tApple = new AppleImpl(); 
    //2.动态代理类 
    DynamicProxy tDynamicProxy = new DynamicProxy(tApple); 
    ClassLoader tClassLoader = tApple.getClass().getClassLoader(); 
    //   创建动态代理的对象，需要借助Proxy.newProxyInstance。该方法的三个参数分别是： 
    //   ClassLoader loader表示当前使用到的appClassloader。 
    //   Class[] interfaces表示目标对象实现的一组接口。 
    //   InvocationHandler h表示当前的InvocationHandler实现实例对象。 
    Apple apple = (Apple) Proxy.newProxyInstance(tClassLoader, new Class[] { Apple.class }, tDynamicProxy); 
    apple.phoneCall(); 
  } 
} 

2.cglib动态代理

 
package com.sinosoft; 
 
 
public class AppleClass{ 
   
  public void phoneCall() { 
    System.out.println("打电话"); 
  } 
 
} 
 
 
 
 
package com.sinosoft; 
 
import java.lang.reflect.Method; 
 
import net.sf.cglib.proxy.MethodInterceptor; 
import net.sf.cglib.proxy.MethodProxy; 
 
 
public class CglibProxy implements MethodInterceptor{ 
 
   
  @Override 
  public Object intercept(Object obj, Method method, Object[] args, MethodProxy proxy) throws Throwable { 
    // TODO Auto-generated method stub 
    Object object= proxy.invokeSuper(obj, args); 
    return object; 
  } 
 
} 
 
 
 
 
package com.sinosoft; 
 
import net.sf.cglib.proxy.Enhancer; 
 
 
public class TestCglibProxy { 
 
  public static void main(String[] args) { 
    CglibProxy tCglibProxy=new CglibProxy(); 
    Enhancer tEnhancer=new Enhancer(); 
    tEnhancer.setSuperclass(AppleClass.class);  
    tEnhancer.setCallback(tCglibProxy); 
     
    AppleClass tApple= (AppleClass)tEnhancer.create(); 
    tApple.phoneCall(); 
  } 
} 

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