Angular 5 http.post授权头未设置

Question

const httpOptions = {
          headers: new HttpHeaders({
            'Content-Type':  'application/x-www-form-urlencoded',
            'Authorization': 'Basic d2ViYXBwOjExMTE=',
            'Access-Control-Expose-Headers' : 'Authorization',
            'Accept' : 'application/json'
          })
        };
    return this.http.post(oauth2_token_endpoint, {}, httpOptions);

Http请求的屏幕截图如下：

​

请帮帮忙。

Answer 1

const httpOptions = {
    headers: new HttpHeaders({ 'Content-Type': 'application/json' })
  };