fastify npm (開発者向けのしくみ)

Key Features of Fastify

Install Fastify

npm install fastify

npm install fastify

We'll install Fastify and add it to the Fastify project package for your package.json file.

Set up the Fastify server

// server.js -> Create Fastify instance
const fastify = require('fastify')({ logger: true });

// Define a route
fastify.get('/', async (request, reply) => {
  return { hello: 'world' };
});

// Run the server
const start = async () => {
  try {
    await fastify.listen(3000);
    fastify.log.info(`Server listening on ${fastify.server.address().port}`);
  } catch (err) {
    fastify.log.error(err);
    process.exit(1);
  }
};

start();

// server.js -> Create Fastify instance
const fastify = require('fastify')({ logger: true });

// Define a route
fastify.get('/', async (request, reply) => {
  return { hello: 'world' };
});

// Run the server
const start = async () => {
  try {
    await fastify.listen(3000);
    fastify.log.info(`Server listening on ${fastify.server.address().port}`);
  } catch (err) {
    fastify.log.error(err);
    process.exit(1);
  }
};

start();

• const fastify = require('fastify')({ logger: true });: Imports Fastify and initializes it with logging enabled.
• fastify.get('/', async (request, reply) => { ... });: Defines a GET route for the root URL (/), returning a JSON response { hello: 'world' }.
• await fastify.listen(3000);: Starts the Fastify server on port 3000.
• fastify.log.info(...);: Logs a message indicating the server is running.

Result generated by the code from the Postman tool.

IronPDFとは何ですか？

IronPDF is a powerful Node.js PDF library that aims to create extraordinarily high-quality PDF files from HTML information. 元の Web コンテンツを犠牲にすることなく、HTML、CSS、およびその他の JavaScript ファイルを正しくフォーマットされた PDF に変換するプロセスを迅速化します。 レポート、請求書、証明書などの動的で印刷可能な文書を生成する必要がある Web アプリケーションにとって非常に有用なツールです。

カスタマイズ可能なページ設定、ヘッダー、フッター、フォントや画像の追加機能は、IronPDF の機能の一部です。 It can handle intricate layouts and styles to guarantee that every test PDF output complies with the requirements. さらに、IronPDF は HTML 内での JavaScript の実行を処理し、正確で動的でインタラクティブなコンテンツのレンダリングを可能にします。

IronPDFの機能

IronPDFをインストールする

Install the IronPDF package to get the tools you need to work with PDFs in Node.js projects.

npm install @ironsoftware/ironpdf

npm install @ironsoftware/ironpdf

Set up a Fastify server with IronPDF integration

Here's a thorough breakdown of how to incorporate IronPDF and Fastify to create PDF documents in a Node.js application:

// index.js

const fastify = require('fastify')({ logger: true });
const IronPdf = require("@ironsoftware/ironpdf");
const document = IronPdf.PdfDocument;
const config = IronPdf.IronPdfGlobalConfig;

// Set the license key for IronPDF (empty string if not using a paid license)
config.setConfig({ licenseKey: '' });

// Define a Fastify route to generate PDF
fastify.get('/generate-pdf', async (request, reply) => {
  try {
    // Generate a simple PDF document from HTML
    const pdfDocument = await document.fromHtml('<h1>Hello, IronPDF!</h1>');
    const pdfBuffer = await pdfDocument.saveAsBuffer();

    // Set response headers to serve the PDF
    reply
      .code(200)
      .header('Content-Type', 'application/pdf')
      .header('Content-Disposition', 'attachment; filename="generated.pdf"')
      .send(pdfBuffer);

    fastify.log.info('PDF generated successfully!');
  } catch (err) {
    fastify.log.error('Failed to generate PDF: ', err);
    reply.code(500).send({ error: 'Failed to generate PDF' });
  }
});

// Run the server
const start = async () => {
  try {
    await fastify.listen(3000);
    fastify.log.info(`Server listening on ${fastify.server.address().port}`);
  } catch (err) {
    fastify.log.error(err);
    process.exit(1);
  }
};

start();

// index.js

const fastify = require('fastify')({ logger: true });
const IronPdf = require("@ironsoftware/ironpdf");
const document = IronPdf.PdfDocument;
const config = IronPdf.IronPdfGlobalConfig;

// Set the license key for IronPDF (empty string if not using a paid license)
config.setConfig({ licenseKey: '' });

// Define a Fastify route to generate PDF
fastify.get('/generate-pdf', async (request, reply) => {
  try {
    // Generate a simple PDF document from HTML
    const pdfDocument = await document.fromHtml('<h1>Hello, IronPDF!</h1>');
    const pdfBuffer = await pdfDocument.saveAsBuffer();

    // Set response headers to serve the PDF
    reply
      .code(200)
      .header('Content-Type', 'application/pdf')
      .header('Content-Disposition', 'attachment; filename="generated.pdf"')
      .send(pdfBuffer);

    fastify.log.info('PDF generated successfully!');
  } catch (err) {
    fastify.log.error('Failed to generate PDF: ', err);
    reply.code(500).send({ error: 'Failed to generate PDF' });
  }
});

// Run the server
const start = async () => {
  try {
    await fastify.listen(3000);
    fastify.log.info(`Server listening on ${fastify.server.address().port}`);
  } catch (err) {
    fastify.log.error(err);
    process.exit(1);
  }
};

start();

Establishing the Fastify Server: Import IronPDF (const IronPdf = require('@ironsoftware/ironpdf');) and Fastify (const fastify = require('fastify')({ logger: true });) into index.js. This prepares the system internally with Fastify to manage HTTP requests and tasks involving the creation of PDFs.

Creating a Path for the Production of PDFs: Create a route in Fastify called /generate-pdf to handle requests for PDF generation. Specify the HTML content to be converted into a PDF ('<h1>Hello, IronPDF!</h1>') and instantiate IronPDF inside the route handler. The PDF can be generated asynchronously by using fromHtml() method and made ready for download using saveAsBuffer() method which helps to convert the generated PDF document into bytes then it is sent through the server response.

Launching the Fastify Server: Use the start() function to handle any possible errors during setup. Run the Fastify server (fastify.listen(3000);) on a designated port, such as 3000. This guarantees that the server is up and prepared to handle incoming requests.