如何检查Hibernate proxy的代码长度？

import javassist.util.proxy.ProxyObject;
import org.hibernate.proxy.HibernateProxy;

public class HibernateProxyCodeLengthChecker {
    public static int getCodeLength(Object proxy) {
        if (proxy instanceof HibernateProxy) {
            HibernateProxy hibernateProxy = (HibernateProxy) proxy;
            Class<?> baseClass = hibernateProxy.getHibernateLazyInitializer().getPersistentClass();
            return getCodeLength(baseClass);
        } else if (proxy instanceof ProxyObject) {
            ProxyObject proxyObject = (ProxyObject) proxy;
            Class<?> baseClass = proxyObject.getClass().getSuperclass();
            return getCodeLength(baseClass);
        } else {
            throw new IllegalArgumentException("Object is not a Hibernate proxy.");
        }
    }

    private static int getCodeLength(Class<?> clazz) {
        // 使用反射获取类的代码长度
        String className = clazz.getName();
        byte[] byteCode = clazz.getClassLoader().getClassBytes(className);
        return byteCode.length;
    }
}

User user = session.get(User.class, id);
int codeLength = HibernateProxyCodeLengthChecker.getCodeLength(user);
System.out.println("Hibernate proxy code length: " + codeLength);