redirect/app/controller/home.js

'use strict';
const Controller = require('egg').Controller;
const { CrudController } = require('naf-framework-mongoose-free/lib/controller');
const fs = require('fs');
const assert = require('assert');
const { BusinessError, ErrorCode } = require('naf-core').Error;
const _ = require('lodash');

class HomeController extends Controller {
  constructor(ctx) {
    super(ctx);
    this.service = this.ctx.service.home;
    this.http = this.ctx.service.util.httpUtil;
  }
  async index() {
    const { ctx } = this;
    ctx.body = 'hi, egg';
  }
  async request() {
    const res = await this.service.request();
    this.ctx.body = res;
  }

  async upload() {
    const { appid } = this.ctx.params;
    assert(appid);
    const file = this.ctx.request.files[0];
    const uarr = this.ctx.request.url.split('/');
    uarr.pop();
    console.log(uarr);
    const uri = `${uarr.join('/')}/`;
    if (!file) throw new BusinessError(ErrorCode.FILE_FAULT, '未获取到文件');
    const { filepath } = file;
    const { filename } = file;
    const arr = filename.split('.');
    const name = new Date().getTime();
    const extension = `${_.last(arr)}`;
    const object = { uri, name, extension };
    const picBuffer = fs.readFileSync(filepath);
    const code = this.turnImageToBase64({ extension, buffer: picBuffer });
    if (code) object.code = code;
    // console.log(object);
    const reqUrl = '/files/server/upload';
    const res = await this.http.$post(reqUrl, object);
    console.log(res);
    const resData = _.get(res, 'data');
    if (resData) this.ctx.body = { errcode: 0, errmsg: 'ok', ...resData };
    else this.ctx.body = { errcode: -1, errmsg: '上传失败' };
  }

  /**
   * 转换图片为base64
   * @param {Object} object excel获取的图片object
   * @property extension  后缀,文件类型
   * @property buffer 图片内容,不含头部信息的,
   */
  turnImageToBase64(object = {}) {
    const { extension, buffer } = object;
    if (extension && buffer) {
      const suffix = object.extension;
      const ib = object.buffer.toString('base64');
      const base64 = `data:image/${suffix};base64,${ib}`;
      return base64;
    }
  }
}
module.exports = CrudController(HomeController, {});