How to set Content-Type and Accept in angular2 getting error 415 Unsupported Media Type

Here's a cleaner way, which is written in the Angular2 docs (https://angular.io/docs/ts/latest/guide/server-communication.html).

import {Headers, RequestOptions} from 'angular2/http';let body = JSON.stringify({ 'foo': 'bar' });let headers = new Headers({ 'Content-Type': 'application/json' });let options = new RequestOptions({ headers: headers });return this.http.post(url, body, options)                .map(res =>  res.json().data)                .catch(this.handleError)

Note that I believe this is only required for POST queries.

First of all you are using incorrect imports from angular2/angular2 now angular2 is in beta now so almost all imports have been changed. Read out this answer for all list of imports.

https://stackoverflow.com/a/34440018/5043867

then up to my understanding you want to call Post request using REST Api I think and you want to send content type='application/json' so you have to send the same by appending it to Header I post the example of using header to use content type like below.

 import {Component, View, Inject} from 'angular2/core'; import {Http} from 'angular2/http';PostRequest(url,data) {        this.headers = new Headers();        this.headers.append("Content-Type", 'application/json');        this.headers.append("Authorization", 'Bearer ' + localStorage.getItem('id_token'))        this.requestoptions = new RequestOptions({            method: RequestMethod.Post,            url: url,            headers: this.headers,            body: JSON.stringify(data)        })        return this.http.request(new Request(this.requestoptions))            .map((res: Response) => {                if (res) {                    return [{ status: res.status, json: res.json() }]                }            });}

I'm assuming dummy example using PostRequest as method name. for more details regarding HTTP and REST API call refer here:https://stackoverflow.com/a/34758630/5043867

For Angular 5.2.9 version

import { HttpHeaders } from '@angular/common/http';const httpOptions = {  headers: new HttpHeaders({    'Content-Type':  'application/json',    'Authorization': 'my-auth-token'  })};return this.http.post(url, body, httpOptions)                .map(res =>  res.json().data)                .catch(this.handleError)