配餐项目前端文件
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import { Injectable } from '@angular/core'
import { HttpClient } from '@angular/common/http'
import { Observable, of, throwError } from 'rxjs'
import { tap, catchError } from 'rxjs/operators'
import { WebSiteConfig } from '@cdk/public-api'
@Injectable({
providedIn: 'root',
})
export class ConfigService {
private configUrl = 'assets/config.json'
private appConfig: WebSiteConfig | null = null
constructor(private http: HttpClient) {}
loadConfig(): Observable<WebSiteConfig> {
if (this.appConfig) {
return of(this.appConfig)
}
console.log(123)
return this.http.get<WebSiteConfig>(this.configUrl).pipe(
tap((config) => {
this.appConfig = config
}),
catchError((error) => {
console.error('加载 config.json 失败:', error)
return throwError(() => new Error('无法加载应用配置'))
}),
)
}
getConfig(): WebSiteConfig | null {
return this.appConfig
}
}