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August 17, 2021 10:21
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Downloading file in Angular - from Node.js
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| downloadFile(token: string, url: string) { | |
| try { | |
| let headers = new HttpHeaders() | |
| .set( | |
| 'Authorization', | |
| `Bearer ${token}` | |
| ) | |
| .set('Accept', 'text/csv'); | |
| this.http | |
| .get(`${url}`, { | |
| headers: headers, | |
| responseType: 'blob' | |
| }) | |
| .subscribe( | |
| data => { | |
| // Without File name | |
| /*console.log('success', data); | |
| const blob = new Blob([data], { type: 'text/csv' }); | |
| const url = window.URL.createObjectURL(blob); | |
| window.open(url);*/ | |
| // With FileName | |
| const blob: Blob = new Blob([data], { type: 'text/csv' }); | |
| const fileName = 'budget.csv'; | |
| const objectUrl: string = URL.createObjectURL(blob); | |
| const a: HTMLAnchorElement = document.createElement('a') as HTMLAnchorElement; | |
| a.href = objectUrl; | |
| a.download = fileName; | |
| document.body.appendChild(a); | |
| a.click(); | |
| document.body.removeChild(a); | |
| URL.revokeObjectURL(objectUrl); | |
| }, | |
| error => console.log('oops', error) | |
| ); | |
| } catch (error) { | |
| console.log(error); | |
| throw error; | |
| } | |
| } | |
| Reference links | |
| ----------------- | |
| https://stackoverflow.com/questions/50039015/how-to-download-a-pdf-file-from-an-url-in-angular-5 | |
| https://stackoverflow.com/questions/35138424/how-do-i-download-a-file-with-angular2 | |
| https://stackoverflow.com/questions/43235129/typescript-blob-filename-without-link | |
| https://github.com/mholt/PapaParse/issues/175#issuecomment-75597039 |
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| router.get('/export_to_csv/:id', bearer.Handler, async (req, res, next) => { | |
| try { | |
| const { id } = req.params; | |
| let action = new exportCSV(id); | |
| ActionManager.execute(action) | |
| .then(result => { | |
| res.setHeader('Content-Disposition', 'attachment; filename=filename.csv'); | |
| res.set('Content-Type', 'text/csv'); | |
| res.status(200); | |
| res.send(result); | |
| }) | |
| .catch(error => { | |
| res.status(error.status || 400).json({ error: error.message }); | |
| }); | |
| } catch (error) { | |
| res.status(error.status || 400).json({ error: error.message }); | |
| } | |
| }); |
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