我想在每个请求开始时实现加载程序,并在请求完成时隐藏加载器,我已经实现了HTTP_INTERCEPTORS
import { Injectable } from '@angular/core';
import { HttpInterceptor, HttpRequest, HttpHandler, HttpEvent, HttpResponse } from '@angular/common/http';
import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';
@Injectable()
export class HttpConfigInterceptor implements HttpInterceptor {
constructor() { }
intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
return next.handle(request).pipe(
map((event: HttpEvent<any>) => {
if (event instanceof HttpResponse) {
debugger;
console.log('event--->>>', event); }
return event;
}));
}
}
我已经这样在 app.module.ts 中注册了HTTP_INTERCEPTOR
providers: [
{ provide: HTTP_INTERCEPTORS, useClass: HttpConfigInterceptor, multi: true}
]
但是当我进行HTTP调用时,没有调用 intercept方法时,是否还需要添加其他内容? 我已遵循此blog,但无法处理
拦截方法正在启动,但是当做出响应或请求时,不会调用适当的方法。
例如
当我收到回复时,我会想要
if (event instanceof HttpResponse) {
debugger;
console.log('event--->>>', event); }
return event;
}
被执行