Node.js web app download s3

Stop Googling Git commands and actually learn it! If the code execution is successful you should see the success message, followed by the bucket address in the output:. To see a complete list of regions and other parameters, please take a look at the official documentation. At this point, let's implement the file upload functionality. In a new file, e. Now, let's create a function that accepts a fileName parameter, representing the file we want to upload:.

Before we upload the file, we need to read its contents as a buffer. After reading it, we can define the needed parameters for the file upload, such as Bucket , Key , and Body. Besides these three parameters, there's a long list of other optional parameters.

To get an idea of the things you can define for a file while uploading, here are a few useful ones:. For the Bucket parameter, we'll use our bucket name, whereas for the Key parameter we'll add the file name we want to save as, and for the Body parameter, we'll use fileContent.

You can replace "cat. To download a file, we can use getObject. The data from S3 comes in a binary format. In the example below, the data from S3 gets converted into a String object with toString and write to a file with writeFileSync method. Alternatively, you can create the stream reader on getObject method and pipe to a stream writer as described here. If you want to do it with Node.

Here is the quick Node. Once we get the response, we will convert it to a JSON object. For this example, we will use the old-school QAS Quick …. I used to use plug-ins to render code blocks for this blog.

Yesterday, I decided to move all the code into GitHub Gist and inject them from there. Active 2 years, 4 months ago. Viewed 5k times. Improve this question. Jose A. I guess another option is to have nodejs create a signed url and send that to the client instead. The client can then use that signed url to access the S3 content — dbramwell. Add a comment. Active Oldest Votes. Improve this answer. StefaDesign StefaDesign 6 6 silver badges 16 16 bronze badges.

How does this trigger the download on the client side tho? Well on client side proper header is what triggers file. In a regular HTTP response, the Content-Disposition response header is a header indicating if the content is expected to be displayed inline in the browser, that is, as a Web page or as part of a Web page, or as an attachment, that is downloaded and saved locally.

In my code above res. I hope this helps.