后端抛出 自己定义的异常（继承runtimeException），在前端通过spring 接受到的异常时 runtimeException，请问怎么解决

*/
    private void createLazyProxy() {
        
        
        ProxyFactory proxyFactory = new ProxyFactory();
        proxyFactory.setTargetSource(new DubboReferenceLazyInitTargetSource());
        proxyFactory.addInterface(interfaceClass);
        Class<?>[] internalInterfaces = AbstractProxyFactory.getInternalInterfaces();
        for (Class<?> anInterface : internalInterfaces) {
            proxyFactory.addInterface(anInterface);
        }
        if (!StringUtils.isEquals(interfaceClass.getName(), interfaceName)) {
            
            try {
                Class<?> serviceInterface = ClassUtils.forName(interfaceName, beanClassLoader);
                proxyFactory.addInterface(serviceInterface);
            } catch (ClassNotFoundException e) {
                
            }
        }
        this.lazyProxy = proxyFactory.getProxy(this.beanClassLoader);
    }
    private Object getCallProxy() throws Exception {
        if (referenceConfig == null) {
            throw new IllegalStateException("ReferenceBean is not ready yet, please make sure to call reference interface method after dubbo is started.");
        }
        
        return referenceConfig.get();
    }
    private class DubboReferenceLazyInitTargetSource extends AbstractLazyCreationTargetSource {