koa 文件下载 pdf预览 两个接口 – nodejs – chromeDownload chromePreview

chrome.js

  1. const router = require("koa-router")()
  2. const mime = require('mime-types') //需npm安装
  3. const fs = require('fs')
  5. router.prefix("/chrome")
  7. router.get("/", async (ctx, next) => {
  8.   ctx.body = {
  9.     title: "/api/chrome/",
  10.   }
  11. })
  13. // http://127.0.0.1:31188/api/chrome/chromePreview?E:\root\Personal\English\杨亮英语\【完结】有道词典高考词汇3500\pdf\02.pdf
  14. // http://127.0.0.1:31188/api/chrome/chromePreview?C:\Users\Reciter\Desktop\桌面Fake垃圾桶\1.jpg
  15. router.get('/chromePreview', async (ctx, next) => {
  16.   // console.info('ctx.request.query', ctx.request.query)
  17.   // let filePath = ctx.request.query.filePath
  18.   let filePath = Object.keys(ctx.request.query)[0]
  19.   let file = fs.readFileSync(filePath)
  20.   let mimeType = mime.lookup(filePath) //读取图片文件类型
  21.   ctx.set('content-type', mimeType) //设置返回类型
  22.   ctx.body = file //返回图片
  23. })
  25. // http://127.0.0.1:31188/api/chrome/chromeDownload?filePath=E:\root\Personal\English\杨亮英语\【完结】有道词典高考词汇3500\pdf\02.pdf
  26. // http://127.0.0.1:31188/api/chrome/chromeDownload?filePath=C:\Users\Reciter\Desktop\桌面Fake垃圾桶\1.jpg
  27. router.get('/chromeDownload', async (ctx, next) => {
  28.   let filePath = ctx.request.query.filePath
  29.   console.info('filePath', filePath)
  30.   let file = fs.readFileSync(filePath)
  31.   let fileName = filePath.split('\\').pop()
  32.   ctx.set('Content-disposition', 'attachment;filename=' + encodeURIComponent(fileName))
  33.   ctx.body = file //返回图片
  34. })
  36. module.exports = router