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Learn how to effectively download DOCX files from URLs to S3 in Node.js, including the right settings to avoid gibberish content.
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How to Download DOCX Files from URL to S3 using Node.js

When working on web applications that require document handling, you might encounter the need to download DOCX files from a URL. This task can be confusing, especially if the downloaded content appears to be gibberish. In this guide, we’ll walk through a practical example using Node.js to achieve this goal efficiently.

The Problem

Imagine you are developing a feature that requires downloading a DOCX file from a given URL and uploading it to Amazon S3. Using libraries like Axios can help fetch files over HTTP, but if not configured correctly, the resulting document may not display correctly or may even contain gibberish.

Users often face challenges with setting the right response type for their download requests. Commonly, when trying to save a DOCX file, the file might not be handled properly, leading to frustrating results.

The Solution

Let’s dive into the solution. Here’s how you can properly download a DOCX file using Node.js with Axios and save it without running into issues.

Step 1: Install the Required Dependencies

First, ensure you have Axios installed in your Node.js project. If you haven’t already, you can do this by running:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Update Your Code

The important changes here involve setting the correct responseType and making sure the file is written properly. Below is the updated code snippet to achieve this:

[[See Video to Reveal this Text or Code Snippet]]

Key Changes Explained

Response Type: Change responseType from blob to arraybuffer. This is crucial as it lets Axios handle binary data correctly.

File Writing Method: Use fs.writeFile() instead of fs.writeFileSync(). The former allows for a callback function, making it more suitable for handling async operations.

Troubleshooting Tips

If you still encounter issues after applying the above changes, consider the following:

Check URL Validity: Ensure that the URL you are trying to download from is accessible and points to a valid DOCX file.

Verify Headers: Make sure that the Accept header is correctly set. This instructs Axios to expect the DOCX format.

Conclusion

Downloading DOCX files in Node.js is straightforward if you utilize the right settings with Axios. By adjusting the responseType and using the correct file methods, you can streamline your development process and resolve file handling issues. Now, you can successfully download DOCX files and proceed to upload them to S3 without fuss.

If you have further questions or need assistance, feel free to drop a comment below! Happy coding!