解决Angular的缓存问题的常用方法是使用HTTP拦截器。这可以在每个HTTP请求中添加或修改标头,从而防止浏览器缓存响应。以下是一个示例:
import { Injectable } from '@angular/core';
import { HttpEvent, HttpInterceptor, HttpHandler, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs';
@Injectable()
export class CacheInterceptor implements HttpInterceptor {
intercept(request: HttpRequest, next: HttpHandler): Observable> {
request = request.clone({
setHeaders: {
'Cache-Control': 'no-cache',
'Pragma': 'no-cache',
'Expires': 'Sat, 01 Jan 2000 00:00:00 GMT'
}
});
return next.handle(request);
}
}
到了这儿,您需要在@ NgModule.providers中向您的应用程序添加拦截器,例如:
import { NgModule } from '@angular/core';
import { HTTP_INTERCEPTORS } from '@angular/common/http';
import { CacheInterceptor } from './cache.interceptor';
@NgModule({
providers: [
{ provide: HTTP_INTERCEPTORS, useClass: CacheInterceptor, multi: true }
]
})
export class AppModule { }
现在,您已经成功地解决了Angular缓存问题,并可以在每个HTTP请求中添加或修改标头,从而防止浏览器缓存响应。