B站随机视频

在线地址：[B站随机视频](http://123.60.153.252:8102) 参考： [带我去一个随机的B站视频！](https://jyblog.cn/513) BV 号规则 https://www.zhihu.com/question/381784377/answer/1099438784 ## 代码： ### 结构

**初始化项目** ``` npm init -y npm install express axios ``` server.js ```js const express = require("express"); const axios = require("axios"); const app = express(); const port = 8102; // BV转换所需的常量 const table = "fZodR9XQDSUm21yCkr6zBqiveYah8bt4xsWpHnJE7jL5VG3guMTKNPAwcF"; const tr = {}; for (let i = 0; i < 58; i++) { tr[table[i]] = i; } const s = [11, 10, 3, 8, 4, 6]; const xor = 177451812; const add = 8728348608; // AV号转BV号 function enc(x) { x = (x ^ xor) + add; const r = "BV1 4 1 7 ".split(""); for (let i = 0; i < 6; i++) { r[s[i]] = table[Math.floor(x / Math.pow(58, i)) % 58]; } return r.join(""); } // 按年份范围生成随机BV号 function generateRandomBV() { const yearRanges = { 2013: { min: 1, max: 1000000 }, 2014: { min: 1000001, max: 2000000 }, 2015: { min: 2000001, max: 4000000 }, 2016: { min: 4000001, max: 8000000 }, 2017: { min: 8000001, max: 16000000 }, 2018: { min: 16000001, max: 35000000 }, 2019: { min: 35000001, max: 60000000 }, 2020: { min: 60000001, max: 85000000 }, 2021: { min: 85000001, max: 500000000 }, 2022: { min: 500000001, max: 700000000 }, 2023: { min: 700000001, max: 835000000 }, 2024: { min: 835000001, max: 950000000 }, }; const years = Object.keys(yearRanges); const randomYear = years[Math.floor(Math.random() * years.length)]; const range = yearRanges[randomYear]; const avid = Math.floor(Math.random() * (range.max - range.min)) + range.min; return enc(avid); } // 验证BV号是否存在 async function verifyBV(bvid) { try { const response = await axios.get( `https://api.bilibili.com/x/web-interface/view?bvid=${bvid}`, { headers: { "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36", Referer: "https://www.bilibili.com", }, } ); return response.data.code === 0; } catch { return false; } } // 随机视频接口 app.get("/random", async (req, res) => { try { let bvid = generateRandomBV(); while (!(await verifyBV(bvid))) { bvid = generateRandomBV(); } res.json({ bvid }); } catch (error) { console.error("Error:", error.message); res.status(500).json({ error: "Internal Server Error" }); } }); // 前端页面路由 app.get("/", (req, res) => { res.sendFile(__dirname + "/index.html"); }); // 启动服务 app.listen(port, () => { console.log(`服务运行在 http://localhost:${port}`); }); ``` index.html ```html B站随机视频 ```

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