eggjs上传文件,并md5名称保存

安装插件:

npm i md5 --save

npm i egg-multipart --save

npm i stream-to-array --save

npm i stream-wormhole --save

主要代码:  // upload.js

'use strict';
const md5 = require('md5')
const path = require("path")
const fs = require("fs")
const toArray = require('stream-to-array');
const sendToWormhole = require('stream-wormhole');

const Controller = require('egg').Controller;
const settings = require('../../config/settings');

class UploadController extends Controller {

  async post() {
    const { ctx } = this;
    let dir_name = ctx.params.dir_name
    const stream = await ctx.getFileStream();
    let url = ""
    try {
      const parts = await toArray(stream);
      let data = Buffer.concat(parts);
      let file_md5 = md5(data)
      let file_name = `${file_md5}${path.extname(stream.filename)}`
      let file_path = path.join(this.config.baseDir, "app/public", dir_name, file_name)

      // 保存文件
      // console.log(file_path)
      await fs.writeFile(file_path, data, (err) => { });
      url = `http://${settings.addr}:${settings.port}/static/${dir_name}/${file_name}`

    } catch (err) {
      await sendToWormhole(stream);
    }
    
    ctx.body = {
      url: url
    };
    
  }
}

module.exports = UploadController;

路由:

 配置: // mode: stream

 使用:

参考官方文档:  // 有写法例子,在他的基础上加了md5而已

https://github.com/eggjs/egg-multipart

https://github.com/eggjs/examples/blob/master/multipart/app/controller/buffer.js