How to Avoid \'403 Forbidden\' Errors When Downloading Public Files from Google Drive in Golang?

Downloading Public Files from Google Drive in Golang

When attempting to download a public file from Google Drive using Golang, it's important to address a potential issue. The provided code allows for the creation of a blank file, but fails to properly download the file's contents.

The problem stems from the improper handling of URL redirection. The initial URL provided by Google Drive redirects to another URL that contains an asterisk character (*). The encoded version of this character is *.

However, when Go fetches the URL, it encodes the asterisk as * instead of the intended *. This causes Google to reject the request and return a "403 Forbidden" error.

To resolve this issue, the following changes are necessary:

1. Decode the redirect URL manually:

   <code class="go">redirectURL := strings.Replace(redirectURL, "%2A", "*", -1)</code>

2. Use the decoded URL for the subsequent HTTP request:

   <code class="go">response, err := http.Get(redirectURL)</code>

With these modifications, Go should be able to successfully retrieve the file's contents and download the file as intended.

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