1. 确保后端API已正确配置以接受Bearer Token。
2. 在Angular中创建一个HttpInterceptor，以在每个请求中添加Bearer Token。 以下是示例代码：

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

@Injectable() export class TokenInterceptor implements HttpInterceptor { constructor() {}

intercept(request: HttpRequest, next: HttpHandler): Observable> { const token = localStorage.getItem('access_token'); if (token) { request = request.clone({ setHeaders: { Authorization: Bearer ${ token } } }); } return next.handle(request); } }

3. 将HttpInterceptor添加到app.module.ts中的provide中。

import { HTTP_INTERCEPTORS } from '@angular/common/http'; import { TokenInterceptor } from './token-interceptor';

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