<el-upload
? ? ? ? class="upload-demo"
? ? ? ? action="http://localhost:5678/uploadModel"
? ? ? ? :show-file-list="false"
? ? ? ? :on-success="getUploadSuccess"
? ? ? ? >
? ? ? ? <el-button size="small" type="primary">點擊上傳</el-button>
</el-upload>
getUploadSuccess(res, file) {
? ? ? // this.avatar = res.avatar;
? ? ? // console.log(564);
? ? ? this.$message({
? ? ? ? type: "success",
? ? ? ? message: "模型上傳成功!",
? ? ? });
? ? },

var multer = require('multer');
// 此操作會創(chuàng)建uploads文件夾，也可理解為最終存儲的目標文件夾,服務啟動就會自動創(chuàng)建
var upload = multer({ dest: 'Simulation_Model/' });
// 此操作理解為，將文件暫時儲存在這個文件夾中
var storage = multer.diskStorage({
? ? destination: function (req, file, cb) {
? ? ? ? cb(null, './Simulation_Model')
? ? },
? ? filename: function (req, file, cb) {
? ? ? ? cb(null, file.originalname)
? ? }
})
var upload = multer({ storage: storage })
// 調(diào)用接口，上傳文件
app.post('/uploadModel', upload.single('file'), function (req, res, next) {
? ? if (req.file === undefined) {
? ? ? ? return res.send("模型上傳失敗！");
? ? }
? ? // fs.renameSync(oldpath, newpath);新路徑和舊路徑都要存在
? ? // 將文件從舊文件夾剪切到新文件夾中，由于我們只需要一個文件夾，所以新路徑與舊路徑相同，
? ? fs.renameSync('./Simulation_Model/' + req.file.filename, "./Simulation_Model/" + req.file.originalname);
? ? res.send("模型上傳成功！");
})

window.location.herf = '下載文件接口'

/*
 * @Author: 471826078@qq.com
 * @Date: 2020-05-21 09:48:04
 * @LastEditors: 471826078@qq.com
 * @LastEditTime: 2020-06-12 14:42:17
 */
var express = require('express');
var router = express.Router();
const multer = require('multer')
const path = require('path')
const http = require('http')
const fs = require('fs')
let upload = multer({
  storage: multer.diskStorage({
    destination: function (req, file, cb) {
      // cb(null, './public/uploads');      //本地
      cb(null, '../public/uploads');  //服務器
    },
    filename: function (req, file, cb) {
      var changedName = new Date().toISOString().replace(/:/g, '-') +'-'+ file.originalname;
      cb(null, changedName);
    }
  })
})
/* GET home page. */
router.get('/', function (req, res, next) {
  res.render('index', { title: 'Express' });
});
//單個圖片文件上傳
router.post('/uploadImage', upload.single('file'), (req, res) => {
  if (!req.file) {  //判斷一下文件是否存在，也可以在前端代碼中進行判斷。
    res.json({
      code: 0,
      message: "上傳文件不能為空！",
      data: null
    })
    return false
  }
  //返回路徑需要轉義  否則會返回反斜杠格式數(shù)據(jù) 導致微信小程序識別不了本地圖片 http://localhost:8888//uploads\images\1582511344098-1.jpg
  let filePath = req.file.path;
  let pathResult = filePath.split('\\').join('/');
  res.json({
    code: 1,
    type: 'uploadImage',
    message: "上傳成功！",
    data: req.file.path,
    originalname: req.file.originalname,
    path:'線上服務地址' + pathResult
  })
});
//下載文件
router.get('/download',(req, res, next)=>{
  const name = req.body.name;
  console.log(name)
  var path = '../public/download/'+ name;
  var size = fs.statSync(path).size;
  var f = fs.createReadStream(path);
  res.writeHead(200, {
    'Content-Type': 'application/force-download',
    'Content-Disposition': 'attachment; filename=' + name,
    'Content-Length': size
  });
  f.pipe(res);
})
module.exports = router;