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

*     &#64;DubboReference(group = "demo", interfaceClass = HelloService.class)
 *     public ReferenceBean&lt;GenericService&gt; genericHelloService() {
 *         return new ReferenceBean();
 *     }
 * }
 * </pre>
 *
 * Or register ReferenceBean in xml:
 * <pre class="code">
 * &lt;dubbo:reference id="helloService" interface="org.apache.dubbo.config.spring.api.HelloService"/&gt;
 * &lt;!-- As GenericService --&gt;
 * &lt;dubbo:reference id="genericHelloService" interface="org.apache.dubbo.config.spring.api.HelloService" generic="true"/&gt;
 * </pre>
 *
 * Step 2: Inject ReferenceBean by @Autowired
 * <pre class="code">
 * public class FooController {
 *     &#64;Autowired
 *     private HelloService helloService;
 *
 *     &#64;Autowired
 *     private GenericService genericHelloService;
 * }
 * </pre>
 *
 *
 * @see org.apache.dubbo.config.annotation.DubboReference
 * @see org.apache.dubbo.config.spring.reference.ReferenceBeanBuilder
 */
public class ReferenceBean<T> implements FactoryBean<T>,