Convert JSON file to CSV in Node.js

Convert_JSON_file_to_CSV_in_NodeJs.js

const convert = async () => {
  const convertApi = groupdocs_conversion_cloud.ConvertApi.fromKeys(clientId, clientSecret);

  const settings = new groupdocs_conversion_cloud.ConvertSettings();
  settings.storageName = myStorage;
  settings.filePath = "nodejs-testing/sample-file.json";
  settings.format = "csv";
  settings.outputPath = "nodejs-testing/sample-file.csv";

  try {
    // Create convert document request
    const request = new groupdocs_conversion_cloud.ConvertDocumentRequest(settings);
    await convertApi.convertDocument(request);
  } 
  catch (err) {
    throw err;
  }
}

convert()
.then(() => {
  console.log("JSON file converted to CSV successfully");
})
.catch((err) => {
  console.log("Error occurred while converting the JSON file:", err);
})

Convert_JSON_file_to_CSV_NodeJs_Download.js

// construct FileApi to download converted file
var fileApi = groupdocs_conversion_cloud.FileApi.fromConfig(config);
// create donwload file request
let request = new groupdocs_conversion_cloud.DownloadFileRequest("nodejs-testing/sample-file.csv", myStorage);
// download file and response type Stream
fileApi.downloadFile(request)
    .then(function (response) {
        // save file in your system directory
        fs.writeFile("H:\\groupdocs-cloud-data\\sample-file.csv", response, "binary", function (err) { });
        console.log("Expected response type is Stream: " + response.length);
    })
    .catch(function (error) {
        console.log("Error: " + error.message);
    });

Convert_JSON_to_CSV_in_NodeJs.md

You can convert JSON file to CSV file programmatically on the cloud. In this article, you will learn how to convert json to csv in Node.js using REST API.

The following topics are covered in this article:

1. JSON to CSV Conversion REST API and Node.js SDK
2. Upload JSON File on the Cloud
3. How to Convert JSON to CSV file in Node.js using REST API
4. Download the converted CSV file

Convert_JSON_to_CSV_NodeJs_Upload.js

// open file in IOStream from your system drive.
var resourcesFolder = 'H:\\groupdocs-cloud-data\\sample-file.json';
// read file
fs.readFile(resourcesFolder, (err, fileStream) => {
  // construct FileApi
  var fileApi = groupdocs_conversion_cloud.FileApi.fromConfig(config);
  // create upload file request
  var request = new groupdocs_conversion_cloud.UploadFileRequest("sample-file.json", fileStream, myStorage);
  // upload file
  fileApi.uploadFile(request)
    .then(function (response) {
      console.log("Expected response type is FilesUploadResult: " + response.uploaded.length);
    })
    .catch(function (error) {
      console.log("Error: " + error.message);
    });
});

Utils_to_Convert_JSON_to_CSV_in_NodeJs_Configurations.js

# Import Node.js SDK in your node application from http://api.groupdocs.cloud
global.groupdocs_conversion_cloud = require("groupdocs-conversion-cloud");
global.fs = require("fs");

// get clientId and clientSecret from https://dashboard.groupdocs.cloud (free registration is required).
global.clientId = "xxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx";
global.clientSecret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";
global.myStorage = "test-internal-storage";
const config = new groupdocs_conversion_cloud.Configuration(clientId, clientSecret);
config.apiBaseUrl = "https://api.groupdocs.cloud";