XML HTTP Request Authentication error "blocked by CORS policy" - angular -


i trying display information web server in angular app , error appears when running. because username & password needed access application. 

error: xmlhttprequest cannot load http://... redirect 'http://...' 'http://.../login.html' has been blocked cors policy: no 'access-control-allow-origin' header present on requested resource. origin 'http://localhost:4200' therefore not allowed access.

how can provide within code loads? code:

project.viewer.component.ts:

@component({     selector: 'project-viewer',     template: `<h1>projects</h1>                 <pre>{{projects}}</pre>`,     styleurls: ['./app.component.css'] })  export class projectviewercomponent  {     name = 'projectviewercomponent';     projects: string;     errormessage = "";     statevalid = true;      constructor(private http:http) {             this.http.get("http://link/projects")             .map(resp => resp.text())             .subscribe(jsonastext => this.projects = jsonastext);     } }

how authenticate within code? in advance.


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