java实现动态代理切面编程

Posted 2022-01-15 cw828

package proxy;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Parameter;

public class MyInvocation implements InvocationHandler
Object obj;

public void setObj(Object obj)
this.obj = obj;

@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable

Parameter[] parameters = method.getParameters();
for (Parameter parameter : parameters)
parameter.getName();


ProxyUtii.proxyMethod1(method.getName());

Object invoke = method.invoke(obj, args);

ProxyUtii.proxyMethod2(method.getName());

return invoke;

 

 

package proxy;

import java.lang.reflect.Proxy;

public class MyProxy

public static Object getProxyInstance(Object obj)

MyInvocation mi = new MyInvocation();

mi.setObj(obj);

Object newProxyInstance = Proxy.newProxyInstance(obj.getClass().getClassLoader(),
obj.getClass().getInterfaces(),mi);

return newProxyInstance;

 

 

 

package proxy;

public class ProxyUtii

public static void proxyMethod1(String str)
System.out.println("开始执行sql方法："+str+"****************************************");



public static void proxyMethod2(String str)
System.out.println("结束执行sql方法："+str+"****************************************");

 

 

 

public static void main(String[] args)

Object proxyInstance = MyProxy.getProxyInstance(pmaunewMapperImpl);

PmaunewMapper pm = (PmaunewMapper) proxyInstance;

List<Pmaunew> selectTest = pm.selectTest();