Angular項目中 出現 NullInjectorError: No provider for HttpClient 的解決辦法20190904

1. 在 app.module.ts 中引入模塊

import { HttpClientModule } from ‘@angular/common/http‘;

2. 在 @NgModule.imports 中引入它

@NgModule({
    ......
    imports: [
        ......
        HttpClientModule,
        ......
    ],
    ......
})