how to set headers to application/json in angular2

Question

I am trying to send HTTP post request in Angular2 but not able to set headers to content type application JSON.

My code is:

login(url,postdata)
{
            


        

Answer 1

You should use code like this

let headers = new Headers();
headers.append('Content-Type', 'application/json');

let options = new RequestOptions({ headers: headers });
return this.http.post(url, JSON.stringify(postdata), options).map(res => res.json());