HttpClient Autherization Header未在Angular中发送

Question

我正在尝试使用httpClient发送Autherization标头，但它没有在请求中发送。

getAuthorizationHeaderClient() {
    var jwt = this._cookie.get('my_authentication');        
    this.authHeader = new HttpHeaders();
    if (jwt) {
        this.authHeader.set('Authorization', 'Bearer ' + jwt);
    }
    return this.authHeader;
}

const req = new HttpRequest('POST',baseUrl + url, itemToPost,{    
    headers:this.getAuthorizationHeaderClient(),
    reportProgress: true,
});

this._httpClient.request(req).subscribe(event => {
    // Via this API, you get access to the raw event stream.
    // Look for upload progress events.
    if (event.type === HttpEventType.UploadProgress) {
        // This is an upload progress event. Compute and show the % done:
        const percentDone = Math.round(100 * event.loaded / event.total);
        console.log(`File is ${percentDone}% uploaded.`);
    } else if (event instanceof HttpResponse) {
        console.log('File is completely uploaded!');
    }
});