相关疑难解决方法(0)

我想在同一个请求中实现post文件和Json数据.

以下是上传文件代码:

upload(url:string,file:File):Observable<{complate:number,progress?:number,data?:Object}>{


    return Observable.create(observer => {
      const formData:FormData = new FormData(),
        xhr:XMLHttpRequest = new XMLHttpRequest();
      formData.append('uploadfile', file);


      formData.append("_csrf", this.tokenService.getCsrf());
      xhr.open('POST',url, true);
      xhr.onreadystatechange = () => {
        if (xhr.readyState === 4) {
          if (xhr.status === 200) {
            observer.next({complate:1,progress:100,data:JSON.parse(xhr.response)});
            observer.complete();
          } else {
            observer.error(xhr.response);
          }
        }
      };

      xhr.upload.onprogress = (event) => {
        observer.next({complate:0,progress:Math.round(event.loaded / event.total * 100)});
      };


      const headers=new Headers();
      let token: string = localStorage.getItem('access-token');
      xhr.setRequestHeader('Authorization', `Bearer ${token}`);
      xhr.send(formData);
    }).share();

如何与angular2 http.post(url,JSON.stringify(data))集成.