像下面的例子一样声明拦截器

public class MyInterceptor  implements SmartEndpointInterceptor {

    @Override
    public boolean shouldIntercept(MessageContext messageContext, Object endpoint) {
        if (endpoint instanceof MethodEndpoint) {
            MethodEndpoint methodEndpoint = (MethodEndpoint)endpoint;
            return methodEndpoint.getMethod().getDeclaringClass() == YourEndpoint.class; <--------Replace that with your endpoint that you wish to interpret
        }
        return false;
    }

    @Override
    public boolean handleRequest(MessageContext messageContext, Object o) throws Exception {
        return true;
    }

    @Override
    public boolean handleResponse(MessageContext messageContext, Object o) throws Exception {
        return true;
    }

    @Override
    public boolean handleFault(MessageContext messageContext, Object o) throws Exception {
        return true;
    }

    @Override
    public void afterCompletion(MessageContext messageContext, Object o, Exception e) throws Exception {

    }
}

别忘了修改这条线 YourEndpoint.class; <--------Replace that with your endpoint that you wish to interpret 在上述代码中。
然后将拦截器注册到

@Override
public void addInterceptors(List<EndpointInterceptor> interceptors) {
    try {
        interceptors.add(new MyInterceptor());
    } catch (Exception e) {
        throw new RuntimeException("No se puede inicializar el Interceptor.");
    }
}