Sending a POST request with parameters using HttpClient

Question

Sending a POST request with parameters using HttpClient

My current challenge involves making a POST request to an endpoint that requires query string parameters instead of passing them in the body of the request.

const params = new HttpParams()
  .set('param1', '1')
  .set('param2', '2');

const url = environment.apiUrl + 'Service/Endpoint';

return this
  .httpClient
  .post<ServiceResponse>(url, { params })
  .pipe(map(res => res.httpStatusCodeSuccess));

Despite my efforts, I continue to receive a 404 error because the call does not contain any query string parameters. This was confirmed by analyzing the network activity.

Interestingly, the same code works perfectly for GET requests when using .get(), but encounters issues with .post() against a POST endpoint. What could be the missing piece in this puzzle?

angular typescript angular-httpclient

Answer 1

Answer №1

When using the Angular post method, the second parameter represents the http body to be included in the request. If no body is needed, simply pass null as the argument and then provide any params as the third argument.

.post<ServiceResponse>(url, null, { params: params })

The reason for this distinction is that in a HTTP GET call, you cannot include a body like you can with a POST call.

Answer 2

When using the Angular post method, the second parameter represents the http body to be included in the request. If no body is needed, simply pass null as the argument and then provide any params as the third argument.

.post<ServiceResponse>(url, null, { params: params })

The reason for this distinction is that in a HTTP GET call, you cannot include a body like you can with a POST call.

Answer 3

Answer №2

One possible explanation is that the issue arises from passing the parameters as an object.

Take a look at the example provided below

const myheader = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')

let body = new HttpParams();

body = body.set('username', USERNAME);
body = body.set('password', PASSWORD);

http.post('/api', body, {
    headers: myheader),
})

Answer 4

One possible explanation is that the issue arises from passing the parameters as an object.

Take a look at the example provided below

const myheader = new HttpHeaders().set('Content-Type', 'application/x-www-form-urlencoded')

let body = new HttpParams();

body = body.set('username', USERNAME);
body = body.set('password', PASSWORD);

http.post('/api', body, {
    headers: myheader),
})

Sending a POST request with parameters using HttpClient

Answer №1

Answer №2

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