Asked 4 years, 2 months ago. Active 3 years, 5 months ago. Viewed 10k times. GetRemindersData Flag. Saravanan Sachi 2, 5 5 gold badges 30 30 silver badges 38 38 bronze badges. You can create the excel file file on the front from the data you display. Look at the answer here to see how it's done. After following above reference i am having error like 'coudld not find a declaration file for module 'xlsx'.
I have an Angular demo app implementing xlsx here. I do not know why the option specified in the question does not work. But I found a solution, so to say "in another forest".
I'm not very versed, so I'll just describe the process of solving the problem. For the beginning I will immediately say that the problem was on the client's side. The method on the server worked correctly from the start. I decided to use another method to download the files "fetch". And came across the next post in the forum. From there I took the following answer.
This option worked, but with screwed. He saved the file with a strange name and no extension. Then I changed it so. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. A link-based solution conforms well to HTML standards and lets the browser do most of the work.
However, if you want more control over the download and would like to display some custom progress indicator you can also download files via Angular's HttpClient. A file is best represented as a Blob in the browser:. The Blob object represents a blob, which is a file-like object of immutable, raw data -- MDN web docs. By specifying the responseType option we can perform a GET request returning a blob representing the downloaded file. Let's assume we've got a designated DownloadService doing just that:.
A component would then be able to call this service, subscribe to the corresponding observable and eventually save the file like this:. Here, we're creating an anchor tag programmatically when the blob arrives.
With URL. Finally, we click the link like the user would've done with a regular browser download link. After the file is downloaded, we'll discard the blob by revoking the object URL we created.
This approach is pretty verbose though and might not work smoothly for every browser. Therefore I'd advise you to use the popular library FileSaver. The saving then becomes a one-liner:.
If you don't like adding a dependency for this and would prefer to use the manual approach shown before, you might as well refactor the code for saving the blob into a separate service. You can also create a custom injection token for URL - also see below how we'll do this for FileSaver.
Download the First Chapter for free 'Awesome Book. It's the bible for Angular. With complete examples to get your project up without needing to resort to endless hours of research. I was facing this same case today, I had to download a pdf file as an attachment the file shouldn't be rendered in the browser, but downloaded instead.
To achieve that I discovered I had to get the file in an Angular Blob , and, at the same time, add a Content-Disposition header in the response. Well, I wrote a piece of code inspired by many of the above answers that should easily work in most scenarios where the server sends a file with a content disposition header, without any third-party installations, except rxjs and angular.
As you can see, it's basically pretty much the average backend call from angular, with two changes. Once the file is fetched from the server, I am in principle, delegating the entire task of saving the file to the helper function, which I keep in a separate file, and import into whichever component I need to.
There, no more cryptic GUID filenames! We can use whatever name the server provides, without having to specify it explicitly in the client, or, overwrite the filename provided by the server as in this example. Also, one can easily, if need be, change the algorithm of extracting the filename from the content-disposition to suit their needs, and everything else will stay unaffected - in case of an error during such extraction, it will just pass 'null' as the filename.
As another answer already pointed out, IE needs some special treatment, as always. But with chromium edge coming in a few months, I wouldn't worry about that while building new apps hopefully. There is also the matter of revoking the URL, but I'm kinda not-so-sure about that, so if someone could help out with that in the comments, that would be awesome. You may also download a file directly from your template where you use download attribute and to [attr.
This simple solution should work on most browsers. This answer suggests that you cannot download files directly with AJAX, primarily for security reasons. So I'll describe what I do in this situation,. Add href attribute in your anchor tag inside the component. Do all following steps in your component. If a tab opens and closes without downloading anything, i tried following with mock anchor link and it worked. You can return a Blob object from the server and create an anchor tag and set the href property to an object URL created from the Blob.
Now clicking on the anchor will download the file. You can set the file name as well. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How do I download a file with Angular2 or greater Ask Question. Asked 5 years, 9 months ago. Active 1 month ago. Viewed k times. Basil 1, 12 12 silver badges 19 19 bronze badges. You cannot download large files with this method.
You will hit the memory limit per tab. This may be as low as GB. For large file downloads you need to specify a new tab e. I don't think there's a clean way to get around the large file size limitation with Ajax-style requests. Add a comment. Active Oldest Votes.
One of the many ways that exist to solve this is as follows: this. Amr ElAdawy 3, 5 5 gold badges 32 32 silver badges 49 49 bronze badges. Alejandro Corredor Alejandro Corredor 2, 1 1 gold badge 8 8 silver badges 6 6 bronze badges. What is this.
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