How to download file node js

In this tutorial, we&#;re gonna create www.cronistalascolonias.com.ar Express example that provides Rest API to download file to Client from url (on server).

This www.cronistalascolonias.com.ar server works with:
&#; Angular Client
&#; Vue Client / Vuetify Client
&#; React Client / React Hooks Client

Related Posts:
&#; www.cronistalascolonias.com.ar Express File Upload Rest API example
&#; www.cronistalascolonias.com.ar Rest APIs example with Express, Sequelize &#; MySQL

www.cronistalascolonias.com.ar Express Download File overview

Our www.cronistalascolonias.com.ar Application will provide APIs for:

• getting list of Files&#; information (file name &#; url)
• downloading File from server with the link

This is the static folder that stores all files:

If we get list of files, the www.cronistalascolonias.com.ar Rest Apis will return:

Each item in the response array has a url that you can use for downloading the file.

These are APIs to be exported:

The source code at the end of this post will cover all of these APIs. But this tutorial only shows you how to get list of files&#; info and download the file from server with url.

You can visit following tutorial for uploading files to the static folder:
www.cronistalascolonias.com.ar Express File Upload Rest API example

Technology

Project Structure

This is the project directory that we&#;re gonna build:

&#; : folder for storing files to download.
&#; exports functions to get files&#; information and download a File with url.
&#; : defines routes for endpoints that is called from HTTP Client, use controller to handle requests.
&#; : initializes routes, runs Express app.

Setup www.cronistalascolonias.com.ar Express File Upload project

Open command prompt, change current directory to the root folder of our project.
Install Express, CORS modules with the following command:

The www.cronistalascolonias.com.ar file will look like this:

Create Controller for download File

In controller package, we create . It exports 2 functions:

• : read all files in uploads folder, return list of files&#; informationn (name, url)
• : receives file name as input parameter, then uses Express www.cronistalascolonias.com.arad API to transfer the file at path (directory + file name) as an &#;attachment&#;.

controller/www.cronistalascolonias.com.ar

Define Route for downloading file

When a client sends HTTP requests, we need to determine how the server will response by setting up the routes.

Create www.cronistalascolonias.com.ar file inside routes folder with content like this:

You can see that we use controller from www.cronistalascolonias.com.ar.

Create Express app server

Finally, we create an Express server in www.cronistalascolonias.com.ar:

What we do are:
&#; import and modules:

• Express is for building the Rest apis
• cors provides Express middleware to enable CORS with various options.

&#; create an Express app, then add middlewares using method. Notice that we set origin: .
&#; listen on port for incoming requests.

Run The App

First we need to create uploads folder with the path , then add several files into the folder.

On the project root folder, run this command: .

&#; Retrieve list of Files&#; information:

&#; Now you can download any file from one of the paths above.
For example: .

Conclusion

Today we&#;ve learned how to create www.cronistalascolonias.com.ar Express Rest API to download file to Client with url from server static folder.

Following tutorials explain how to build Front-end Apps to work with our www.cronistalascolonias.com.ar Express Server:
&#; Angular Client
&#; Vue Client / Vuetify Client
&#; React Client / React Hooks Client

The source code at the end of this post will cover all of APIs including upload files.
www.cronistalascolonias.com.ar Express File Upload Rest API example using Multer

Happy Learning! See you again.

Further Reading

You can also know way to upload an Excel file and store the content in MySQL database with the post:
www.cronistalascolonias.com.ar: Upload/Import Excel file data into Database

If you want to upload images into database, you can find instructions at:
&#; Upload/store images in MySQL using www.cronistalascolonias.com.ar, Express &#; Multer
&#; How to upload/store images in MongoDB using www.cronistalascolonias.com.ar, Express &#; Multer

Source Code

You can find the complete source code for this tutorial on Github.