希望你能帮助我，我在本地环境中的 AngularJs 应用程序中使用 Firebase Cloud Messaging 一切都还可以，但是当我用Gradle (gradle copyTask) 生成战争并部署在 tomcat 8.0 时，只需获取：
"FirebaseError: Messaging: We are unable to register the default service worker. Failed to register a ServiceWorker: A bad HTTP response code (404) was received when fetching the script. (messaging/failed-serviceworker-registration). at http://localhost:8090/test/scripts/vendor.49aa6ce4.js:89:9150"