要解决Angular的HTTP响应头问题，可以使用拦截器来修改或添加响应头。下面是一个示例代码：

1. 创建一个名为http-interceptor.ts的拦截器文件：

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(request: HttpRequest, next: HttpHandler): Observable> {
    // 修改或添加响应头
    request = request.clone({
      setHeaders: {
        'Custom-Header': 'Custom Value'
      }
    });

    return next.handle(request);
  }
}

2. 在app.module.ts中提供该拦截器：

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

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

现在，每次发出的HTTP请求都会带有自定义的响应头。您可以根据需要修改Custom-Header和Custom Value的值。