角HttpClient无法获得响应

Question

对于这个帖子请求，我没有得到任何服务器响应：

 this.httpClient
            .post(this.appConfigService.buildAuthorizationUrl('/logon'), data, {
                headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
                //observe: 'response',
            })
            .toPromise()
            .then(
                (response: any) => {
                                // not reached
                },
                (error: any) => {
                                // not reached
                }
            )
            .catch(ex => {
               // not reached
            });

.then 更新： Fiddler显示了我希望在成功块中获得的服务器响应：

服务器响应示例：

HTTP/1.1 400 Bad Request
Cache-Control: no-cache,no-cache, no-store, must-revalidate
Pragma: no-cache,no-cache
Content-Type: application/json;charset=UTF-8
Expires: -1,0
Server: Microsoft-IIS/10.0
X-SourceFiles: =?UTF-8?B?QzpcVXNlcnNcS2F5IFphbmRlclxEb2N1bWVudHNcZXZlXFNvdXJjZVxJbmZvcnNIVC5HZW5lc2lzQXBpXGxvZ29u?=
X-Powered-By: ASP.NET
X-UA-Compatible: IE=edge
Date: Wed, 30 Oct 2019 10:33:16 GMT
Content-Length: 79

{"error":"Error","error_description":"The user name or password is incorrect."}

更新可能是因为头文件

Sec-Fetch-Site: same-site
Sec-Fetch-Mode: cors

而不是

Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: cors

背景:我正在迁移和现有的angularjs应用程序，我使用相同(不变)的API。

Answer 1

问题是由CORS问题引起的。