我在Angular 2中调用了一个http帖子.这在post man中工作得很好但是当我在Angular 2中实现这个API调用时,我得到No’Access-Control-Allow’错误.这是我的代码
@H_301_10@
CORS标题就像
getInspections(): Observable<IInspection[]> {
if (!this.inspections) {
let body =JSON.stringify({"Statuses":["Submitted","Opened"]});
let headers = new Headers({ 'Content-Type': 'application/json' });
headers.append('Access-Control-Allow-Origin','*');
let options = new RequestOptions({ headers: headers });
return this.http.post(this._baseUrl + '/api/Inspect/ListI',body,options)
.map((res: Response) => {
this.inspections = res.json();
return this.inspections;
})
.catch(this.handleError);
}
else {
//return cached data
return this.createObservable(this.inspections);
}
}
或者我可以这样做吗？只需传递标题而不是选项
getInspections(): Observable<IInspection[]> {
if (!this.inspections) {
let body =JSON.stringify({"Statuses":["Submitted","Opened"]});
let headers = new Headers({ 'Content-Type': 'application/json' });
//headers.append('Access-Control-Allow-Origin','*');
// let options = new RequestOptions({ headers:headers });
return this.http.post(this._baseUrl + '/api/Inspect/ListI',headers)
.map((res: Response) => {
this.inspections = res.json();
return this.inspections;
})
.catch(this.handleError);
}
else {
//return cached data
return this.createObservable(this.inspections);
}
}
headers.append('Access-Control-Allow-Origin','*');
需要由服务器提供.在客户端添加它们毫无意义.
