java动态代理2 （cglib 不用实现接口）

ITest.java

package proxy2;

public interface ITest {
 public void test(String str);
}

 

TestImpl1.java

package proxy2;

public class TestImpl1 implements ITest {

 @Override
 public void test(String str) {
  System.out.println(str + " invoked!");
 }

}

 

TestImpl2.java

package proxy2;

public class TestImpl2 implements ITest {

 @Override
 public void test(String str) {
  System.out.println(str + " invoked!");
 }

}

 

TestProxy.java

package proxy2;

import java.lang.reflect.Method;

import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;

 

//cglib动态代理代理类
public class TestProxy implements MethodInterceptor {
 private Object target;

 public TestProxy(Object target) {
  super();
  this.target = target;
 }

 

 // 取得代理对象
 public Object getInstance() {
  Enhancer enhancer = new Enhancer();
  enhancer.setSuperclass(this.target.getClass());
  // 回调方法
  enhancer.setCallback(this);
  // 创建代理对象
  return enhancer.create();
 }

 

 @Override
 public Object intercept(Object arg0, Method arg1, Object[] arg2,
   MethodProxy arg3) throws Throwable {
  System.out.println("事物开始");
  arg3.invokeSuper(arg0, arg2);
  System.out.println("事物结束");
  return null;
 }
}