CGLib实现动态代理

梦里梦外; 2021-07-25 01:26 441阅读 0赞

**一 代码位置**

[https://gitee.com/cakin24/javatest][https_gitee.com_cakin24_javatest]

**二 代码**

1 CglibMeipo

package CGlib;
    import net.sf.cglib.proxy.Enhancer;
    import net.sf.cglib.proxy.MethodInterceptor;
    import net.sf.cglib.proxy.MethodProxy;
    
    
    import java.lang.reflect.Method;
    
    
    public class CglibMeipo implements MethodInterceptor {
        public Object getInstance(Class<?> clazz) throws Exception{
            Enhancer enhancer = new Enhancer();
            enhancer.setSuperclass(clazz);
            enhancer.setCallback(this);
            return enhancer.create();
        }
        private void before(){
            System.out.println("我是媒婆：我给你找对象，现在已经确认你的需求");
            System.out.println("开始物色");
        }
    
    
        private void after(){
            System.out.println("如果合适的话，就准备办事");
        }
    
    
        @Override
        public Object intercept( Object o, Method method, Object[] objects, MethodProxy methodProxy ) throws Throwable {
            before();
            Object obj = methodProxy.invokeSuper(o,objects);
            after();
            return obj;
        }
    }

2 CGLibTest

package CGlib;
    import net.sf.cglib.core.DebuggingClassWriter;
    
    public class CGLibTest {
        public static void main(String[] args){
            try {
                System.setProperty(DebuggingClassWriter.DEBUG_LOCATION_PROPERTY,"E://cglib_proxy_class/");
                Customer obj = (Customer)new CglibMeipo().getInstance(Customer.class);
                obj.findLove();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }

3 Customer

package CGlib;
    
    public class Customer{
        public void findLove(){
            System.out.println("高富帅");
            System.out.println("身高180cm");
            System.out.println("有6块腹肌");
        }
    }

**三 测试**

我是媒婆：我给你找对象，现在已经确认你的需求
    开始物色
    高富帅
    身高180cm
    有6块腹肌
    如果合适的话，就准备办事

[https_gitee.com_cakin24_javatest]: https://gitee.com/cakin24/javatest