java实现动态代理切面编程

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();

}