SheetJS总是抛出相同的输出

Question

我在用npm上的.xlsx ("xlsx“)解析".xls”文件时遇到了问题，我不知道我做错了什么，但我总是得到相同的输出

[
{
    "__EMPTY": "i"
},
{
    "__EMPTY":"«Z.7¦§dÞZµìe°

我在环4中使用了一个空控制器，以防您识别语法，而且这个问题似乎没有出现回环，因为我能够在服务器上保存文件并打开它，而不会出现问题。

似乎xlsx模块由于某种原因无法解析我的文件，有人能看看是否有什么问题吗？

这是我的密码：

import { inject } from '@loopback/context';
import { ParamsDictionary, RequestHandler } from 'express-serve-static-core';
import * as multer from "multer";
import { unlinkSync } from "fs";
import * as xlsx from "xlsx"
import {
  requestBody,
  RestBindings,
  RequestBodyObject,
  post,
  Request,
  Response
} from '@loopback/rest';

const MULTIPART_FORM_DATA: RequestBodyObject = {
  description: 'multipart/form-data value.',
  required: true,
  content: {
    'multipart/form-data': {
      // Skip body parsing
      'x-parser': 'stream',
      schema: { type: 'object' },
    },
  },
}

export class TemplateActionsController {
  constructor() { }

  @post('/parse-template', {
    responses: {
      200: {
        content: {
          'multipart/form-data': {
            schema: {
              type: 'object',
            },
          },
        },
        description: '',
      },
    },
  })
  async parseTemplate(
    @requestBody(MULTIPART_FORM_DATA)
    request: Request,
    @inject(RestBindings.Http.RESPONSE) response: Response,
  ): Promise<object> {
    //const storage = multer.memoryStorage();
    const storage = multer.diskStorage({
      filename: (req: Request<ParamsDictionary>, file: Express.Multer.File, callback: (error: Error | null, filename: string) => void) => {
        callback(null, file.originalname);
      }
    });
    const upload = multer.default({ storage });
    return new Promise<object>((resolve, reject) => {
      let middleware: RequestHandler<ParamsDictionary> = upload.any();
      console.log('----------------------------------------------------------');
      //console.log(request);
      middleware(request as any, response as any, (err: any) => {
        if (err) return reject(err);

        let arrFiles: Express.Multer.File[];
        arrFiles = (request as Express.Request).files as Express.Multer.File[];

        console.log('----------------------------------------------------------');
        console.log(arrFiles[0]);

        let workbook: xlsx.WorkBook = xlsx.read(arrFiles[0].path);
        var sheet_name_list: string[] = workbook.SheetNames;
        let firstSheet: xlsx.WorkSheet = workbook.Sheets[sheet_name_list[0]]

        let strResult: any = xlsx.utils.sheet_to_json(firstSheet);

        console.log('----------------------------------------------------------');
        console.log(sheet_name_list);
        console.log('----------------------------------------------------------');
        console.log(strResult);

        try {
          unlinkSync(arrFiles[0].path);
        } catch (e) {
          //error deleting the file
        }

        resolve(strResult);
      });
    });
  }
}

解析文件的行--就是这一行：

let strResult: any = xlsx.utils.sheet_to_json(firstSheet);

我的输入excel文件(template.xlsx)在第一张表中只有简单的数据：

​

​

我在任何地方都找不到像这样的其他问题。

如果有人能帮忙请告诉我。非常感谢。奥马尔

Answer 1

看来我用的是：

let workbook: xlsx.WorkBook = xlsx.read(arrFiles[0].path);

而不是：

let workbook: xlsx.WorkBook = xlsx.readFile(arrFiles[0].path);

这是我的错，现在一切都好了。