ByteScout Cloud API Server – PDF To JSON API – JavaScript – Convert PDF To JSON From URL (Node.js) – Async API

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ByteScout Cloud API Server – PDF To JSON API – JavaScript – Convert PDF To JSON From URL (Node.js) – Async API

printable version:
ByteScout-Cloud-API-Server-JavaScript-Convert-PDF-To-JSON-From-URL-(Node-js)-Async-API.pdf

How to convert PDF to JSON from URL (node for PDF to JSON API in JavaScript using ByteScout Cloud API Server

How to convert PDF to JSON from URL (node for PDF to JSON API in JavaScript: Step By Step Instructions

This page displays the code samples for programming in JavaScript. ByteScout Cloud API Server was designed to assist PDF to JSON API in JavaScript. ByteScout Cloud API Server is API server that is ready to use and can be installed and deployed in less than 30 minutes on your own Windows server or server in a cloud. It can save data and files on your local server-based file storage or in Amazon AWS S3 storage. Data is processed solely on the API server and is powered by ByteScout engine, no cloud services or Internet connection is required for data processing..

Want to learn quickly? These fast application programming interfaces of ByteScout Cloud API Server for JavaScript plus the instruction and the code below will help to learn how to convert PDF to JSON from URL (node. This JavaScript sample code can be used by copying and pasting into your project. Once done,just compile your project and click Run. Easy to understand tutorials are available along with installed ByteScout Cloud API Server if you’d like to learn more about the topic and the details of the API.

Trial version of ByteScout is available for free download from our website. This and other source code samples for JavaScript and other programming languages are available.

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app.js

      // Please NOTE: In this sample we're assuming Cloud Api Server is hosted at "https://localhost". 
// If it's not then please replace this with with your hosting url.

var https = require("https");
var path = require("path");
var fs = require("fs");

// Direct URL of source PDF file.
const SourceFileUrl = "https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-to-json/sample.pdf";
// Comma-separated list of page indices (or ranges) to process. Leave empty for all pages. Example: '0,2-5,7-'.
const Pages = "";
// PDF document password. Leave empty for unprotected documents.
const Password = "";
// Destination JSON file name
const DestinationFile = "./result.json";

// Prepare request to `PDF To JSON` API endpoint
var queryPath = `/pdf/convert/to/json?name=${path.basename(DestinationFile)}&password=${Password}&pages=${Pages}&url=${SourceFileUrl}&async=True`;
var reqOptions = {
    host: "localhost",
    path: encodeURI(queryPath)
};
// Send request
https.get(reqOptions, (response) => {
    response.on("data", (d) => {

        // Parse JSON response
        var data = JSON.parse(d);

        if (data.error == false) {
            console.log(`Job #${data.jobId} has been created!`);

            // Process returned job
            checkIfJobIsCompleted(data.jobId, data.url);
        }
        else {
            // Service reported error
            console.log(data.message);
        }
    });
}).on("error", (e) => {
    // Request error
    console.log(e);
});

function checkIfJobIsCompleted(jobId, resultFileUrl) {
    let queryPath = `/job/check?jobid=${jobId}`;
    let reqOptions = {
        host: "localhost",
        path: encodeURI(queryPath),
        method: "GET" 
    };

    https.get(reqOptions, (response) => {
        response.on("data", (d) => {
            response.setEncoding("utf8");

            // Parse JSON response
            let data = JSON.parse(d);
            console.log(`Checking Job #${jobId}, Status: ${data.status}, Time: ${new Date().toLocaleString()}`);

            if (data.status == "working") {
                // Check again after 3 seconds
                setTimeout(function(){
                    checkIfJobIsCompleted(jobId, resultFileUrl);
                }, 3000);
            }
            else if (data.status == "success") {
                // Download JSON file
                var file = fs.createWriteStream(DestinationFile);
                https.get(resultFileUrl, (response2) => {
                    response2.pipe(file)
                        .on("close", () => {
                            console.log(`Generated JSON file saved as "${DestinationFile}" file.`);
                        });
                });
            }
            else {
                console.log(`Operation ended with status: "${data.status}".`);
            }
        })
    });
}

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package.json

      {
  "name": "test",
  "version": "1.0.0",
  "description": "PDF.co",
  "main": "app.js",
  "scripts": {
  },
  "keywords": [
    "pdf.co",
    "web",
    "api",
    "bytescout",
    "api"
  ],
  "author": "ByteScout & PDF.co",
  "license": "ISC",
  "dependencies": {
    "request": "^2.88.2"
  }
}