时间:2021-07-01 10:21:17 帮助过:4人阅读
前言
公司现在的产品Axure文档在生成好Html文件之后,都是通过git来进行管理的,每次文件更新,大家都需要从git上进行拉取,然后在本地查看,更新会出现不及时的问题,大家有时候忘记git拉取导致出现实现效果与最终产品稿不一致。最近在看Koa的东西,因此通过git hooks 搭配Koa来实现了一个在线预览,实现上大概是根据访问路径查找指定目录,然后对目录进行遍历,然后根据目录和文件类型的区分返回相应的数据。
实现
做的过程中需要注意的点,
Utf-8的方式,开始统一通过binary的方式读取,然后返回导致图片可以显示,但是js执行报错。
实现代码如下
const Koa = require('koa'); const path = require('path'); const fs = require('fs'); let mimes = { 'css': 'text/css', 'html': 'text/html', 'jpg': 'image/jpeg', 'jpeg': 'image/jpeg', 'json': 'application/json', 'js': 'text/javascript', 'xml': 'text/xml', 'png': 'image/png', 'pdf': 'application/pdf', 'less': 'text/css', 'gif': 'image/gif', 'txt': 'text/plain', 'tiff': 'image/tiff', 'svg': 'image/svg+xml' }; // Scan dir function walk(reqPath) { let files = fs.readdirSync(reqPath); let fileList = []; for (let i = 0, len = files.length; i< len; i++) { let item = files[i]; if (item.startsWith('.')) { continue; } let realPath = reqPath + '/' + files[i]; if (isDir(realPath)) { fileList.push(filter(reqPath, files[i])); } else { fileList.push(files[i]); } } return fileList; } function isDir(path){ return fs.existsSync(path) && fs.statSync(path).isDirectory(); } // function filter(reqPath, filePath) { let files = fs.readdirSync(reqPath + '/' + filePath); for (let i = 0; i < files.length; i++) { let item = files[i]; if (item.endsWith('index.html')) { return filePath + '/' + 'index.html'; } } return filePath; } function dir(url, reqPath) { let contentList = walk(reqPath); let result = '<div align="center" style="font-family:arial;font-size:30px;">Product Document</div><ul>'; if (url == '/') { url = ''; } for (let [index, item] of contentList.entries()) { let realHref = url + '/' + item; let realItem = item.split('/'); result += '<li> <a style="font-family:arial;font-size:20px;" href=' + realHref + '>' + realItem[0] + '</a></li>'; } result = result + '</ul>'; return result; } async function file (url, filePath) { let resultMime = parseMime(url); let content; if (resultMime && resultMime.indexOf('image/') >= 0) { content = fs.readFileSync(filePath, 'binary'); } else { content = fs.readFileSync(filePath, 'utf8'); } return content; } async function content(ctx, fullStaticPath) { let url = decodeURI(ctx.url); let reqPath = path.join(fullStaticPath, url); let exist = fs.existsSync(reqPath); let content = ''; if (!exist) { content = 'Local file not exists'; } else { let stat = fs.statSync(reqPath); if (stat.isDirectory()) { content = dir(ctx.url, reqPath); } else { content = await file(ctx.url, reqPath); } } return content; } function parseMime(url) { let extName = path.extname(url); extName = extName ? extName.slice(1) : 'unknown'; return mimes[extName]; } const app = new Koa(); const staticPath = '../onlinedoc';`请输入代码` app.use(async(ctx) => { let fullStaticPath = path.join(__dirname, staticPath); let resultContent = await content(ctx, fullStaticPath); let resultMime = parseMime(ctx.url); if (resultMime) { ctx.type = resultMime; } if(resultMime && resultMime.indexOf('image/') >= 0) { ctx.res.writeHead(200); ctx.res.write(resultContent, 'binary'); ctx.res.end(); } else { ctx.body = resultContent; } }); app.listen(8080, () => { console.log('Running'); });
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。