我已经多次检查过我的代码,并尝试在网络和stackoverflow上找到类似的问题,但我现在已经没有想法了,我根本看不出我的错误.你对我接下来要检查的内容有什么建议吗？
更新：当我调试我的配置类时,我可以看到,我的json-Configurations文件被读取,并且值在App-Initialize上正确存储到我的配置变量中(请参阅load() – plnkr上app.config.ts的功能) .
但是,如果我想从此配置变量值中获取值,例如第33行“werkzeug.service.ts”
let host:string = this.config.getConfig('host');
出现以下错误：
TypeError: Cannot read property 'host' of null
at AppConfig.getConfig (http://localhost:3000/app/app.config.js:31:27)
at WerkzeugService.getSollIstWerkzeugBySchrankAndAnsicht (http://localhost:3000/app/werkzeug.service.js:47:32)
at AppComponent.ngAfterViewInit (http://localhost:3000/app/app.component.js:37:30)
at CompiledTemplate.proxyViewClass.View_AppComponent_Host0.detectChangesInternal (/AppModule/AppComponent/host.ngfactory.js:44:71)
at CompiledTemplate.proxyViewClass.AppView.detectChanges (http://localhost:3000/node_modules/@angular/core/bundles/core.umd.js:12206:18)
at CompiledTemplate.proxyViewClass.DebugAppView.detectChanges (http://localhost:3000/node_modules/@angular/core/bundles/core.umd.js:12353:48)
at ViewRef_.detectChanges (http://localhost:3000/node_modules/@angular/core/bundles/core.umd.js:9375:24)
at eval (http://localhost:3000/node_modules/@angular/core/bundles/core.umd.js:8299:71)
at Array.forEach (native)
at ApplicationRef_.tick (http://localhost:3000/node_modules/@angular/core/bundles/core.umd.js:8299:29)
at ApplicationRef_._loadComponent (http://localhost:3000/node_modules/@angular/core/bundles/core.umd.js:8274:18)
at ApplicationRef_.bootstrap (http://localhost:3000/node_modules/@angular/core/bundles/core.umd.js:8262:18)
at eval (http://localhost:3000/node_modules/@angular/core/bundles/core.umd.js:8091:93)
at Array.forEach (native)
at PlatformRef_._moduleDoBootstrap
这是我的项目设置：http://plnkr.co/edit/QsaOtnqFr0Ky9Qwz21SP?p=preview
@R_404_323@
HttpModule应该在导入但Http不应该.
@NgModule({
imports: [ BrowserModule,FormsModule,ReactiveFormsModule,HttpModule],declarations: [ AppComponent ],bootstrap: [ AppComponent ],providers: [ AppConfig,{ provide: APP_INITIALIZER,useFactory: initConfig,deps: [AppConfig],multi: true }]
})
示例http.get Plunker：http://plnkr.co/edit/60E2qb9gOjvkEAeR5CtE?p=info
