我似乎无法调试我的代码有人可以帮助我吗？

Question

我正在尝试为我的 angular 应用程序创建查看详细信息功能。

我已经尝试在 google 上搜索如何解决我的错误，但是 none 当前的解决方案对我有用。

core.js:15724 ERROR Error: Uncaught (in promise): Error: StaticInjectorError(AppModule)[MovieDetailComponent -> MoviesService]: StaticInjectorError(Platform: core)[MovieDetailComponent -> MoviesService]: NullInjectorError: No provider for MoviesService! Error: StaticInjectorError(AppModule)[MovieDetailComponent -> MoviesService]: StaticInjectorError(Platform: core)[MovieDetailComponent -> MoviesService]: NullInjectorError: No provider for MoviesService! at NullInjector.push../node_modules/@angular/core/fesm5/core.js.NullInjector.get (core.js:8896) at resolveToken (core.js:9141) at tryResolveToken (core.js:9085) at StaticInjector.push../node_modules/@angular/core/fesm5/core.js.StaticInjector.get (core.js:8982) at resolveToken (core.js:9141) at tryResolveToken (core.js:9085) at StaticInjector.push../node_modules/@angular/core/fesm5/core.js.StaticInjector.get (core.js:8982) at resolveNgModuleDep (core.js:21218) at NgModuleRef_.push../node_modules/@angular/core/fesm5/core.js.NgModuleRef_.get (core.js:21907) at resolveDep (core.js:22278) at resolvePromise (zone.js:831) at resolvePromise (zone.js:788) at zone.js:892 at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:423) at Object.onInvokeTask (core.js:17290) at ZoneDelegate.push../node_modules/zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:422) at Zone.push../node_modules/zone.js/dist/zone.js.Zone.runTask (zone.js:195) at drainMicroTaskQueue (zone.js:601)

Answer 1

在您的服务中，必须在 class 声明之前有装饰器

@Injectable({
  providedIn: 'root'
})

这会将服务注入您的应用程序 (https://angular.io/tutorial/toh-pt4)

我似乎无法调试我的代码有人可以帮助我吗？

I can't seem to debug my code can anyone help me?

angular

angular5