com.aliyun.openservices.ons.api.exactlyonce.manager.util.AopUtil Maven / Gradle / Ivy

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package com.aliyun.openservices.ons.api.exactlyonce.manager.util;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

import org.springframework.aop.framework.AdvisedSupport;
import org.springframework.aop.support.AopUtils;

/**
 * @author gongshi
 */
public class AopUtil {
    public static Class findTargetClass(Object proxy) throws Exception {
        if (AopUtils.isAopProxy(proxy)) {
            AdvisedSupport advised = getAdvisedSupport(proxy);
            Object target = advised.getTargetSource().getTarget();
            return findTargetClass(target);
        } else {
            return proxy.getClass();
        }
    }

    public static AdvisedSupport getAdvisedSupport(Object proxy) throws Exception {
        Field h;
        if (AopUtils.isJdkDynamicProxy(proxy)) {
            h = proxy.getClass().getSuperclass().getDeclaredField("h");
        } else {
            h = proxy.getClass().getDeclaredField("CGLIB$CALLBACK_0");
        }
        h.setAccessible(true);
        Object dynamicAdvisedInterceptor = h.get(proxy);
        Field advised = dynamicAdvisedInterceptor.getClass().getDeclaredField("advised");
        advised.setAccessible(true);
        return (AdvisedSupport) advised.get(dynamicAdvisedInterceptor);
    }


    public static String formatMethod(Method method) {
        StringBuilder sb = new StringBuilder();

        String mehodName = method.getName();
        Class[] params = method.getParameterTypes();
        sb.append(mehodName);
        sb.append("(");

        int paramPos = 0;
        for (Class claz : params) {
            sb.append(claz.getName());
            if (++paramPos < params.length) {
                sb.append(",");
            }
        }
        sb.append(")");
        return sb.toString();
    }
}