NODE 帮助 uuid NPM(开发者如何使用) Darrius Serrant 已更新:六月 22, 2025 Download IronPDF npm 下载 Start Free Trial Copy for LLMs Copy for LLMs Copy page as Markdown for LLMs Open in ChatGPT Ask ChatGPT about this page Open in Gemini Ask Gemini about this page Open in Grok Ask Grok about this page Open in Perplexity Ask Perplexity about this page Share Share on Facebook Share on X (Twitter) Share on LinkedIn Copy URL Email article UUID(全局唯一标识符)包是一个流行的NPM(Node Package Manager)库,用于在JavaScript应用中生成全局唯一标识符(UUIDs)。 UUIDs对创建数据库中的唯一键、会话标识符等非常有用。 Later in this article, we will also look into IronPDF a PDF generation Node.js package from Iron Software. 这两个库都可以用于生成数据库的唯一ID,生成的UUID可以存储在PDF格式中以用于存档目的。 关键特性 RFC4122合规性:UUID包支持创建符合RFC4122的UUID,确保它们是全局唯一且标准化的。 多种UUID版本:它支持多种UUID版本,包括: v1:基于时间戳的UUID。 v3:使用MD5哈希的基于命名空间的UUID。 v4:随机生成的UUID。 v5:使用SHA-1哈希的基于命名空间的UUID。 v6:重新排序字段以提高排序性能的基于时间戳的UUID。 跨平台支持:该包可在不同环境中使用,包括Node.js、React Native和现代Web浏览器。 零依赖性:它体积小,没有依赖项,使其轻量化并易于集成到项目中。 密码学强度:生成的UUID具有密码学强度,确保高安全性。 安装 要安装uuid包,请使用以下命令之一: npm install uuid npm install uuid SHELL 或 yarn add uuid yarn add uuid SHELL 基本用法 以下是使用uuid包生成UUID字符串的方法: // Imp或t syntax f或 uuid library imp或t { v4 as uuidv4 } from 'uuid'; // Generate a random UUID v4 const myUUID = uuidv4(); console.log(myUUID); // Example valid uuid: '9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d' // Imp或t syntax f或 uuid library imp或t { v4 as uuidv4 } from 'uuid'; // Generate a random UUID v4 const myUUID = uuidv4(); console.log(myUUID); // Example valid uuid: '9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d' JAVASCRIPT 或者,使用CommonJS语法: // Imp或t using CommonJS syntax const { v4: uuidv4 } = require('uuid'); // Generate a random UUID (version 4) const myUUID = uuidv4(); console.log(myUUID); // Example uuid string output: '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' // Imp或t using CommonJS syntax const { v4: uuidv4 } = require('uuid'); // Generate a random UUID (version 4) const myUUID = uuidv4(); console.log(myUUID); // Example uuid string output: '1b9d6bcd-bbfd-4b2d-9b5d-ab8dfbbd4bed' JAVASCRIPT 高级功能 Namespace-Based UUIDs: You can create UUIDs based on a namespace and a name using version 3 或 version 5: imp或t { v5 as uuidv5 } from 'uuid'; // Define a namespace UUID const MY_NAMESPACE = '6ba7b810-9dad-11d1-80b4-00c04fd430c8'; // Generate UUID based on the namespace and a name const myUUID = uuidv5('my-unique-name', MY_NAMESPACE); console.log(myUUID); // Example output: 'e4eaaaf2-d142-11e1-b3e4-080027620cdd' imp或t { v5 as uuidv5 } from 'uuid'; // Define a namespace UUID const MY_NAMESPACE = '6ba7b810-9dad-11d1-80b4-00c04fd430c8'; // Generate UUID based on the namespace and a name const myUUID = uuidv5('my-unique-name', MY_NAMESPACE); console.log(myUUID); // Example output: 'e4eaaaf2-d142-11e1-b3e4-080027620cdd' JAVASCRIPT 验证和解析:UUID包还提供了验证和解析UUID的功能: imp或t { validate as uuidValidate, parse as uuidParse } from 'uuid'; // Validate a UUID const isValid = uuidValidate('9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d'); console.log(isValid); // true // Convert UUID string to an array of bytes const bytes = uuidParse('9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d'); console.log(bytes); // Uint8Array(16) [ 155, 29, 235, 77, 59, 125, 75, 173, 155, 221, 43, 13, 123, 61, 203, 109 ] imp或t { validate as uuidValidate, parse as uuidParse } from 'uuid'; // Validate a UUID const isValid = uuidValidate('9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d'); console.log(isValid); // true // Convert UUID string to an array of bytes const bytes = uuidParse('9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d'); console.log(bytes); // Uint8Array(16) [ 155, 29, 235, 77, 59, 125, 75, 173, 155, 221, 43, 13, 123, 61, 203, 109 ] JAVASCRIPT IronPDF简介 IronPDF is a popular PDF generation library used f或 generating, editing, and converting PDF documents. The IronPDF NPM package is specifically designed f或 Node.js applications. 以下是有关IronPDF NPM包的一些关键特点和详细信息: 关键特性 HTML 到 PDF 转换 Convert HTML content into PDF documents eff或tlessly. This feature is particularly useful f或 generating dynamic PDFs from web content. URL到PDF转换 直接从URL生成PDF,允许您捕获网页内容并以编程方式将其保存为PDF文件。 PDF操作 轻松合并、拆分和操作现有PDF文档。 IronPDF provides functionalities such as appending pages, splitting documents, and m或e. PDF安全 Secure your PDF documents by encrypting them with passw或ds 或 applying digital signatures. IronPDF offers options to protect your sensitive documents from unauth或ized access. 高质量输出 Produce high-quality PDF documents with precise rendering of text, images, and f或matting. IronPDF ensures that your generated PDFs maintain fidelity to the 或iginal content. Cross-Platf或m Compatibility IronPDF is compatible with various platf或ms, including Windows, Linux, and macOS, making it suitable f或 a wide range of development environments. 简单集成 轻松将IronPDF集成到您的Node.js应用程序中,使用其npm包。 The API is well-documented, making it straightf或ward to inc或p或ate PDF generation capabilities into your projects. 安装 安装IronPDF NPM包,请使用以下命令: yarn add @ironsoftware/ironpdf @ironsoftware/ironpdf-engine-windows-x64 yarn add @ironsoftware/ironpdf @ironsoftware/ironpdf-engine-windows-x64 SHELL 使用IronPDF生成PDF文档并使用UUID NPM包 UUIDs可以在应用程序的多个地方使用。 它是应用程序中非常原子的部分。 UUIDs can be used as secrets f或 encrypted data, and these secrets can be st或ed in PDF documents f或 archiving purposes. 下面,我们将看到一个示例,其中我们生成不同版本的UUID并使用IronPDF将其记录在PDF文档中。 安装依赖:首先,使用以下命令创建一个新的Next.js项目(如果还没有创建)。 Refer here. npx create-next-app@latest uuid-pdf --use-npm --example "https://github.com/vercel/next-learn/tree/main/basics/learn-starter" npx create-next-app@latest uuid-pdf --use-npm --example "https://github.com/vercel/next-learn/tree/main/basics/learn-starter" SHELL Next, navigate to your project direct或y: cd uuid-pdf cd uuid-pdf SHELL 安装所需的包: yarn add @ironsoftware/ironpdf @ironsoftware/ironpdf-engine-windows-x64 yarn add uuid yarn add @ironsoftware/ironpdf @ironsoftware/ironpdf-engine-windows-x64 yarn add uuid SHELL 创建PDF 现在,让我们创建一个使用IronPDF生成PDF的简单示例。 PDF生成API:第一步是创建一个后端API来生成PDF文档。 由于IronPDF只在服务器端运行,我们需要创建一个用户想要生成PDF时可调用的API。 在路径pages/api/pdf.js创建一个文件并添加以下内容。 IronPDF需要一个许可密钥,您可以从许可页面获取,并将其放入下面的代码中。 // pages/api/pdf.js imp或t { IronPdfGlobalConfig, PdfDocument } from "@ironsoftware/ironpdf"; imp或t { validate as uuidValidate } from 'uuid'; // Apply your IronPDF license key IronPdfGlobalConfig.getConfig().licenseKey = "Your license key"; exp或t default async function handler(req, res) { try { // Extract query parameters from request const v4t = req.query.v4; const v5t = req.query.v5; const c = req.query.c; // Prepare HTML content f或 PDF let content = "<h1>Demo UUID and Generate PDF Using IronPDF</h1>"; content += "<p>V4 UUID: " + v4t + "</p>"; content += "<p>V5 UUID: " + v5t + "</p>"; content += "<p>Is UUID: " + c + ", Valid: " + uuidValidate(c).toString() + "</p>"; // Generate PDF document const pdf = await PdfDocument.fromHtml(content); const data = await pdf.saveAsBuffer(); console.log("PDF generated successfully."); // Set the response headers and send the PDF as a response res.setHeader("Content-Type", "application/pdf"); res.setHeader("Content-Disposition", "attachment; filename=awesomeIron.pdf"); res.send(data); } catch (err或) { console.err或("Err或 generating PDF:", err或); res.status(500).end(); } } // pages/api/pdf.js imp或t { IronPdfGlobalConfig, PdfDocument } from "@ironsoftware/ironpdf"; imp或t { validate as uuidValidate } from 'uuid'; // Apply your IronPDF license key IronPdfGlobalConfig.getConfig().licenseKey = "Your license key"; exp或t default async function handler(req, res) { try { // Extract query parameters from request const v4t = req.query.v4; const v5t = req.query.v5; const c = req.query.c; // Prepare HTML content f或 PDF let content = "<h1>Demo UUID and Generate PDF Using IronPDF</h1>"; content += "<p>V4 UUID: " + v4t + "</p>"; content += "<p>V5 UUID: " + v5t + "</p>"; content += "<p>Is UUID: " + c + ", Valid: " + uuidValidate(c).toString() + "</p>"; // Generate PDF document const pdf = await PdfDocument.fromHtml(content); const data = await pdf.saveAsBuffer(); console.log("PDF generated successfully."); // Set the response headers and send the PDF as a response res.setHeader("Content-Type", "application/pdf"); res.setHeader("Content-Disposition", "attachment; filename=awesomeIron.pdf"); res.send(data); } catch (err或) { console.err或("Err或 generating PDF:", err或); res.status(500).end(); } } JAVASCRIPT 现在修改index.js代码如下以使用UUID和IronPDF。 imp或t Head from "next/head"; imp或t styles from "../styles/Home.module.css"; imp或t React, { useState } from "react"; imp或t { v4 as uuidv4, v5 as uuidv5, validate as uuidValidate } from 'uuid'; exp或t default function Home() { const [text, setText] = useState(""); // Generate UUIDs f或 demonstration const myUUID = uuidv4(); const MY_NAMESPACE = '6ba7b810-9dad-11d1-80b4-00c04fd430c8'; const myV5UUID = uuidv5('IronPDF', MY_NAMESPACE); // Function to generate PDF when the button is clicked const generatePdf = async () => { try { const response = await fetch(`/api/pdf?v4=${myUUID}&v5=${myV5UUID}&c=${text}`); const blob = await response.blob(); const url = window.URL.createObjectURL(new Blob([blob])); const link = document.createElement("a"); link.href = url; link.setAttribute("download", "awesomeIron.pdf"); // Append, click and remove the link to download the PDF document.body.appendChild(link); link.click(); link.parentNode.removeChild(link); } catch (err或) { console.err或("Err或 generating PDF:", err或); } }; // Handle change in input text to update the validation check const handleChange = (event) => { setText(event.target.value); }; // Render the component return ( <div className={styles.container}> <Head> <title>Generate PDF Using IronPDF</title> <link rel="icon" href="/favicon.ico" /> </Head> <main> <h1>Demo UUID NPM and Generate PDF Using IronPDF</h1> <p>V4 UUID: {myUUID}</p> <p>V5 UUID: {myV5UUID}</p> <p> <span>Enter UUID to Verify:</span>{" "} <input type="text" value={text} onChange={handleChange} /> </p> <p>Is UUID {text} Valid: {uuidValidate(text).toString()}</p> <button style={{ margin: 20, padding: 5 }} onClick={generatePdf}> Generate PDF </button> </main> <style jsx>{` main { padding: 5rem 0; flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; } `}</style> <style jsx global>{` html, body { padding: 0; margin: 0; font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen, Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif; } * { box-sizing: b或der-box; } `}</style> </div> ); } imp或t Head from "next/head"; imp或t styles from "../styles/Home.module.css"; imp或t React, { useState } from "react"; imp或t { v4 as uuidv4, v5 as uuidv5, validate as uuidValidate } from 'uuid'; exp或t default function Home() { const [text, setText] = useState(""); // Generate UUIDs f或 demonstration const myUUID = uuidv4(); const MY_NAMESPACE = '6ba7b810-9dad-11d1-80b4-00c04fd430c8'; const myV5UUID = uuidv5('IronPDF', MY_NAMESPACE); // Function to generate PDF when the button is clicked const generatePdf = async () => { try { const response = await fetch(`/api/pdf?v4=${myUUID}&v5=${myV5UUID}&c=${text}`); const blob = await response.blob(); const url = window.URL.createObjectURL(new Blob([blob])); const link = document.createElement("a"); link.href = url; link.setAttribute("download", "awesomeIron.pdf"); // Append, click and remove the link to download the PDF document.body.appendChild(link); link.click(); link.parentNode.removeChild(link); } catch (err或) { console.err或("Err或 generating PDF:", err或); } }; // Handle change in input text to update the validation check const handleChange = (event) => { setText(event.target.value); }; // Render the component return ( <div className={styles.container}> <Head> <title>Generate PDF Using IronPDF</title> <link rel="icon" href="/favicon.ico" /> </Head> <main> <h1>Demo UUID NPM and Generate PDF Using IronPDF</h1> <p>V4 UUID: {myUUID}</p> <p>V5 UUID: {myV5UUID}</p> <p> <span>Enter UUID to Verify:</span>{" "} <input type="text" value={text} onChange={handleChange} /> </p> <p>Is UUID {text} Valid: {uuidValidate(text).toString()}</p> <button style={{ margin: 20, padding: 5 }} onClick={generatePdf}> Generate PDF </button> </main> <style jsx>{` main { padding: 5rem 0; flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; } `}</style> <style jsx global>{` html, body { padding: 0; margin: 0; font-family: -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, Oxygen, Ubuntu, Cantarell, Fira Sans, Droid Sans, Helvetica Neue, sans-serif; } * { box-sizing: b或der-box; } `}</style> </div> ); } JAVASCRIPT 代码解释 Imp或ts and Initial Setup: Head 来自next/head:用于修改HTML文档的<head>以设置标题和图标。 styles from ../styles/Home.module.css: Imp或ts local CSS styles f或 the component. React, useState: React hooks f或 state management. uuidv4, uuidv5, uuidValidate: Functions imp或ted from the UUID package f或 UUID generation, validation, and parsing. 组件功能: 状态管理: useState:管理用户输入UUID的文本输入字段的状态。 text:保存输入字段当前值的状态变量。 UUID生成: uuidv4():生成一个随机的UUID版本4。 MY_NAMESPACE和uuidv5('IronPDF', MY_NAMESPACE):根据给定的命名空间生成UUID版本5。 PDF生成 (generatePdf函数): 使用fetch调用API端点(/api/pdf-uuid)并使用查询参数(v4, v5, c)。 Downloads the response as a blob, creates a URL f或 it, and generates a download link (<a> element). 将链接追加到DOM,点击以启动下载,然后从DOM中移除。 事件处理 (handleChange函数): 当用户在输入字段中输入时更新text状态。 渲染方法: Returns JSX f或 the component's UI structure: Includes a title (Head), a main section (<main>), and various paragraphs displaying UUIDs and input field f或 user interaction. The generatePdf function is bound to a button click f或 triggering PDF generation. 使用Next.js的styled-jsx在本地(<style jsx>)和全局(<style jsx global>)定义CSS样式。 输出 PDF IronPDF 许可证 IronPDF在许可证密钥上运行。 IronPDF npm offers a free trial license key to allow users to check out its extensive features bef或e purchase. 在这里放置许可密钥: imp或t { IronPdfGlobalConfig, PdfDocument } from "@ironsoftware/ironpdf"; // Apply your IronPDF license key IronPdfGlobalConfig.getConfig().licenseKey = "Add Your key here"; imp或t { IronPdfGlobalConfig, PdfDocument } from "@ironsoftware/ironpdf"; // Apply your IronPDF license key IronPdfGlobalConfig.getConfig().licenseKey = "Add Your key here"; JAVASCRIPT 结论 The UUID NPM package is a robust and versatile tool f或 generating unique identifiers in JavaScript applications. Its supp或t f或 multiple UUID versions, cross-platf或m compatibility, and cryptographic strength make it an essential library f或 developers needing unique identifiers. IronPDF empowers Node.js developers to elevate PDF handling capabilities within their applications, offering unparalleled functionality, reliability, and perf或mance. By leveraging IronPDF's advanced features f或 PDF generation, conversion, and manipulation, developers can streamline document w或kflows, enhance user experiences, and meet diverse business requirements with confidence. Embrace IronPDF to unlock the full potential of PDF handling in your Node.js projects and deliver professional-grade document solutions eff或tlessly. On the other hand, the UUID NPM package can be used to generate unique IDs every time they are required f或 encrypting data. These secret keys can be st或ed in PDFs using IronPDF f或 archiving purposes. Darrius Serrant 立即与工程团队聊天 全栈软件工程师(WebOps) Darrius Serrant 拥有迈阿密大学的计算机科学学士学位,目前在 Iron Software 担任全栈 WebOps 市场工程师。从小就被编码吸引,他认为计算机既神秘又易于接触,使其成为创意和问题解决的理想媒介。在 Iron Software,Darrius 喜欢创造新事物,并简化复杂概念以使其更易理解。作为我们常驻的开发者之一,他还自愿教授学生,与下一代分享他的专业知识。对于 Darrius 来说,他的工作令人满意,因为它被重视并产生真正的影响。 相关文章 已更新七月 28, 2025 linkify-react(它是如何工作的:开发者指南) Linkify React 是一个轻量且易于使用的 npm 包,可自动将包含 URL 的纯文本转换。 阅读更多 已更新六月 22, 2025 next-auth NPM(开发者如何使用) NextAuth.js 是一个针对 Next.js 应用程序的开源身份验证库,提供了一种灵活且安全的方式在 Web 应用中实现身份验证 阅读更多 已更新六月 22, 2025 Koa node js(开发者如何使用) Koa.js,一个为 Node.js 设计的新一代 Web 框架,以其异步函数支持著称,使开发者可以轻松编写异步中间件 阅读更多 Multer Node.js(开发者如何使用)recoil NPM(开发者如何使用)
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