com.orion.spring.ProxyTargets Maven / Gradle / Ivy
package com.orion.spring;
import org.springframework.aop.SpringProxy;
import org.springframework.aop.framework.AdvisedSupport;
import org.springframework.aop.framework.AopProxy;
import org.springframework.aop.support.AopUtils;
import java.lang.reflect.Field;
import java.lang.reflect.Proxy;
/**
* spring获取源对象
*
* @author Jiahang Li
* @version 1.0.0
* @since 2020/2/10 17:35
*/
public class ProxyTargets {
private ProxyTargets() {
}
/**
* 判断是否为spring的代理类
*
* @param o 对象
* @return true springProxy
*/
public static boolean isSpringProxy(Object o) {
return o instanceof SpringProxy;
}
/**
* 判断是否为代理类
*
* @param o 对象
* @return true proxy
*/
public static boolean isProxy(Object o) {
return o instanceof SpringProxy || (o != null && Proxy.isProxyClass(o.getClass()));
}
/**
* 获取 目标对象
*
* @param proxy 代理对象
* @return 目标对象
* @throws Exception e
*/
public static Object getTarget(Object proxy) throws Exception {
if (!AopUtils.isAopProxy(proxy)) {
return proxy;
}
if (AopUtils.isJdkDynamicProxy(proxy)) {
return getJdkDynamicProxyTargetObject(proxy);
} else {
return getCglibProxyTargetObject(proxy);
}
}
private static Object getCglibProxyTargetObject(Object proxy) throws Exception {
Field 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)).getTargetSource().getTarget();
}
private static Object getJdkDynamicProxyTargetObject(Object proxy) throws Exception {
Field h = proxy.getClass().getSuperclass().getDeclaredField("h");
h.setAccessible(true);
AopProxy aopProxy = (AopProxy) h.get(proxy);
Field advised = aopProxy.getClass().getDeclaredField("advised");
advised.setAccessible(true);
return ((AdvisedSupport) advised.get(aopProxy)).getTargetSource().getTarget();
}
}