title: HTTP post working on postman but not on Angular 2
body: <p>I have a template which (click) triggets addUseCase():</p>
  
  <pre><code>import {Component} from "@angular/core";
  import {DataService} from "../shared/data.service";
  import {Config} from "../shared/strings";
  import {Headers, Http} from "@angular/http";
  
  @Component({
      selector: "add",
      styleUrls: ["add.component.scss"],
      templateUrl: "add.component.html"
  })
  export class AddComponent {
      public title: string;
      public body: string;
  
      constructor(private dataService: DataService,
                  private http: Http) {
          this.title = "";
          this.body = "";
      }
  
      public addUseCase() {
  
          let url = Config.baseUrl + Config.case;
          console.log("url", url); // --&gt; http://localhost:3001/case
  
          let headers = new Headers();
          headers.append('Content-Type', 'application/json');
  
          let body = JSON.stringify({title:this.title})
  
      this.http.post(url, body, {headers: headers}).map( res =&gt; console.log ("res", res), error =&gt; console.log("error", error));
      }
  }
  </code></pre>
  
  <p>After testing in Postman I get my node/express server correct response. But when I try to use angular HTTP to send I don't get any response at all, no error:</p>
  
  <p>My postman works, but can't make http post of angular 2 work:</p>
  
  <p><a href="https://i.stack.imgur.com/ZtklR.png" rel="nofollow"><img src="https://i.stack.imgur.com/ZtklR.png" alt="enter image description here"></a></p>
  
  <h1>Update with errors:</h1>
  
  <pre><code>this.http.post(url, body, {headers: headers})
      .map(res =&gt; res.json()).subscribe(data =&gt; console.log(data)); //...errors if any
  ;
  </code></pre>
  
  <p>And the errors:</p>
  
  <pre><code>EXCEPTION: Unexpected token W in JSON at position 0ErrorHandler.handleError @ core.umd.js:3462next @ core.umd.js:6924schedulerFn @ core.umd.js:6172SafeSubscriber.__tryOrUnsub @ Subscriber.js:223SafeSubscriber.next @ Subscriber.js:172Subscriber._next @ Subscriber.js:125Subscriber.next @ Subscriber.js:89Subject.next @ Subject.js:55EventEmitter.emit @ core.umd.js:6164onError @ core.umd.js:6388onHandleError @ core.umd.js:6263ZoneDelegate.handleError @ zone.js:236Zone.runTask @ zone.js:157ZoneTask.invoke @ zone.js:335
  core.umd.js:3467 ORIGINAL STACKTRACE:ErrorHandler.handleError @ core.umd.js:3467next @ core.umd.js:6924schedulerFn @ core.umd.js:6172SafeSubscriber.__tryOrUnsub @ Subscriber.js:223SafeSubscriber.next @ Subscriber.js:172Subscriber._next @ Subscriber.js:125Subscriber.next @ Subscriber.js:89Subject.next @ Subject.js:55EventEmitter.emit @ core.umd.js:6164onError @ core.umd.js:6388onHandleError @ core.umd.js:6263ZoneDelegate.handleError @ zone.js:236Zone.runTask @ zone.js:157ZoneTask.invoke @ zone.js:335
  core.umd.js:3468 SyntaxError: Unexpected token W in JSON at position 0
      at JSON.parse (&lt;anonymous&gt;)
      at Function.Json.parse (http://localhost:3000/vendor.bundle.js:11272:59)
      at Response.Body.json (http://localhost:3000/vendor.bundle.js:12250:30)
      at MapSubscriber.project (http://localhost:3000/main.bundle.js:6202:47)
      at MapSubscriber._next (http://localhost:3000/vendor.bundle.js:23914:36)
      at MapSubscriber.Subscriber.next (http://localhost:3000/vendor.bundle.js:249:19)
      at XMLHttpRequest.onLoad (http://localhost:3000/vendor.bundle.js:12581:43)
      at ZoneDelegate.invokeTask (http://localhost:3000/polyfills.bundle.js:14882:36)
      at Object.onInvokeTask (http://localhost:3000/vendor.bundle.js:6930:42)
      at ZoneDelegate.invokeTask (http://localhost:3000/polyfills.bundle.js:14881:41)
    -------------   Elapsed: 16 ms; At: Thu Oct 27 2016 08:06:32 GMT-0500 (COT)   -------------  
      at Object.onScheduleTask (http://localhost:3000/polyfills.bundle.js:14537:19)
      at ZoneDelegate.scheduleTask (http://localhost:3000/polyfills.bundle.js:14859:50)
      at Zone.scheduleEventTask (http://localhost:3000/polyfills.bundle.js:14791:40)
      at zoneAwareAddListener (http://localhost:3000/polyfills.bundle.js:15441:15)
      at XMLHttpRequest.addEventListener (eval at createNamedFn (http://localhost:3000/polyfills.bundle.js:15544:18), &lt;anonymous&gt;:3:43)
      at Observable._subscribe (http://localhost:3000/vendor.bundle.js:12624:23)
      at Observable.subscribe (http://localhost:3000/vendor.bundle.js:70:28)
      at Observable._subscribe (http://localhost:3000/vendor.bundle.js:128:29)ErrorHandler.handleError @ core.umd.js:3468next @ core.umd.js:6924schedulerFn @ core.umd.js:6172SafeSubscriber.__tryOrUnsub @ Subscriber.js:223SafeSubscriber.next @ Subscriber.js:172Subscriber._next @ Subscriber.js:125Subscriber.next @ Subscriber.js:89Subject.next @ Subject.js:55EventEmitter.emit @ core.umd.js:6164onError @ core.umd.js:6388onHandleError @ core.umd.js:6263ZoneDelegate.handleError @ zone.js:236Zone.runTask @ zone.js:157ZoneTask.invoke @ zone.js:335
  http.umd.js:188 Uncaught SyntaxError: Unexpected token W in JSON at position 0(…)Json.parse @ http.umd.js:188Body.json @ http.umd.js:1166(anonymous function) @ add.component.ts:34MapSubscriber._next @ map.js:77Subscriber.next @ Subscriber.js:89onLoad @ http.umd.js:1497ZoneDelegate.invokeTask @ zone.js:265onInvokeTask @ core.umd.js:6233ZoneDelegate.invokeTask @ zone.js:264Zone.runTask @ zone.js:154ZoneTask.invoke @ zone.js:335
  </code></pre>