How can I use angular 2 request data

When we send data, including JSON content, to an external api, an error occurs Access-Control-Allow-Origin

. The solution to this problem is to use x-www-form-urlencoded content

. Is there anyway to use JSON?

JSON content:

    this.http.post('/api/login', {
      email: email,
      password: pass
    }).map(res => res.json())
      .subscribe(response => {
        console.log(response);
      } , error => console.error(error));
  }

      

        
        
        
      

    

x-www-form-urlencod

:

  this.headers.append('Content-Type', 'application/x-www-form-urlencoded');
    this.options = new RequestOptions({ headers: this.headers, method: 'post'});
    return this.http.post('/api/login', "email=info@mail.com&password=123", this.options )
        .map(res => res.json())
        .map(user => {
            if (user) {
                console.log(user);
            }
            return !!user ;
        });
}

      

        
        
        
      

    

Another solution:

1. Install the extension Access-Control-Allow-Origin in Chrome
2.lunch web api in localhost bu looking for another way
3.enable CORS on IIS7

but the problem is not solved!