java Proxy 解析---spring aop

public interface IAccountService {
    int getInt(int i);
    int getInt2(int i);
}

public class AccountServiceImpl implements IAccountService {
    public int getInt(int i) {
        return i;
    }
    public int getInt2(int i) {
        return i;
    }
}

package com.jd.xq.proxy;
import com.jd.xq.service.IAccountService;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
/**
 * @author duanxiaoqiu
 * @Date 2020-01-07 16:21
 **/
public class AccountAdvice implements InvocationHandler {
    private IAccountService iAccountService;
    public AccountAdvice(IAccountService iAccountService) {
        this.iAccountService = iAccountService;
    }
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        if (method.getName().equals("getInt")) {
            return 100;
        }
        return method.invoke(iAccountService, args);
    }
}

public static void main(String[] args) {
        //创建目标对象
        IAccountService target = new AccountServiceImpl();
        //创建代理对象
        IAccountService proxy = (IAccountService) Proxy.newProxyInstance(target.getClass().getClassLoader(),
                target.getClass().getInterfaces(),
                new AccountAdvice(target)
        );
        System.out.println(proxy.getInt(1));
        System.out.println(proxy.getInt2(1));
    }