Angular 9 GET api Http失败响应404错误

Question

我正在从UI调用REST API，但出现错误

错误代码：404消息：https://localhost:5001/api/SampleDataSource/GetDetails的Http错误响应：404 OK

query(): Observable < object > {
      private headers = new HttpHeaders(); 

     this.headers = this.headers.append('X-Requested-With', 'XMLHttpRequest');
      this.headers = this.headers.append('Content-Type', 'application/json');
      this.headers = this.headers.append('Accept', 'application/json');
      this.headers = this.headers.append('Access-Control-Allow-Headers', 'Content-Type');

     return this.http.get(this.BASE_URL, { headers: this.headers }).pipe(catchError(this.handleError));
}

Answer 1

404-是标准错误，找不到请求的资源。检查您的api URL，看起来您的URL错误（可能是拼写错误？）。另外，要验证网址，请检查Chrome中的“网络”标签以查看真实网址