Question

How to read a JSON file into server memory in Node.js?

I need to read a JSON file into server memory in my Node.js application so that I can access its data throughout the app. I’m unsure about the best method to achieve this, whether to use fs or another approach. Can someone guide me on how to do this effectively?

Answer 1

To read a JSON file into server memory in Node.js, you can use the built-in fs (File System) module. Here's how you can do it:

Example:

const fs = require('fs');

// Asynchronous method to read JSON file

fs.readFile('path/to/your/file.json', 'utf8', (err, data) => {

  if (err) {

    console.error('Error reading file:', err);

    return;

  }

  const jsonData = JSON.parse(data); // Parse the JSON data

  console.log(jsonData); // Log the JSON data to console

});

// Synchronous method to read JSON file

try {

  const data = fs.readFileSync('path/to/your/file.json', 'utf8');

  const jsonData = JSON.parse(data);

  console.log(jsonData);

} catch (err) {

  console.error('Error reading file:', err);

}