page.ts

goToSelectfile(event: any) {
    this.fileObj = event.target.files[0];
  }
  sendName() {
    const uploadData = new FormData();
    uploadData.append('file', this.fileObj);
    this.http.post('http://127.0.0.1:5000/getText', uploadData).subscribe((res: any) => {
      this.show = true;
      this.line = res.outputText;
      this.sentiment = res.predSentiment;
    })
  }