1. 确保你已经在Angular应用程序中注入了HttpInterceptor。
2. 在拦截器类中的intercept方法中添加response headers，示例代码如下：

import { Injectable } from '@angular/core'; import { HttpInterceptor, HttpRequest, HttpHandler, HttpEvent } from '@angular/common/http'; import { Observable } from 'rxjs';

@Injectable() export class CustomHttpInterceptor implements HttpInterceptor { intercept(req: HttpRequest, next: HttpHandler): Observable> { const newReq = req.clone({ headers: req.headers.set('Custom-Header', 'xyz') }); return next.handle(newReq); } }

3. 在app.module.ts中把拦截器添加到providers数组中，示例代码如下：

import { BrowserModule } from '@angular/platform-browser'; import { NgModule } from '@angular/core'; import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http'; import { CustomHttpInterceptor } from './custom-http-interceptor';

import { AppComponent } from './app.component';

@NgModule({ declarations: [ AppComponent ], imports: [ BrowserModule, HttpClientModule ], providers: [ { provide: HTTP_INTERCEPTORS, useClass: CustomHttpInterceptor, multi: true } ], bootstrap: [AppComponent] }) export class AppModule { }

这样做，请求就会包含自定义的响应头部信息。