Angular 9 http.获取带参数的请求

Question

I am trying to send query parameters with a get request. This code always has an empty query {}. What am I missing?

let p = new HttpParams().set('Test', "7878");
return this.http
  .get<Response>(environment.baseAPIUrl + route, 
    { 
      withCredentials: false, 
      headers: requestHeaders, 
      params: p, 
      responseType, 
      observe: observe as 'body'
    } 
  );

Answer 1

Basically your use of HttpParams seems okay and it's working for me.

Open my Stackblitz Example :

• open the dev-tools (F12 in Chrome)
• go to the network tab
• now Refresh the stackblitz-browser frame: everything looks good:

just note, that the error-message (1) will not include the url-parameters