前言

实现需求：上传多个文件。其实就是获取多个文件的绝对路径交给后端接口去处理。

Upload组件

首先，这里不能调用Upload的onChange函数，因为上传中、完成、失败都会调用这个函数，在多个文件的情况下会出现多次调用问题。改用beforeUpload和customRequest。

import React, { useRef, useState, useEffect } from 'react';
import { UploadOutlined } from '@ant-design/icons';
import type { UploadFile, UploadProps } from 'antd';
import { Button, Upload } from 'antd';
import { useTranslation } from 'react-i18next';
import Console from '../../../../util/Console';
import { UploadChangeParam } from 'antd/es/upload';
import { sendMsgToMain } from 'electron-prokit';type Props = {name?: string;onChangeFilePath: (path: string | null | unknown, info?: UploadChangeParam<UploadFile<any>>) => void;accept: Array<string>;headers?: any;progress?: any;buttonTitle?: string;rest?: UploadProps;action?: string | ((file: any) => Promise<string>);
};const FileMultiSelectButton: React.FC<Props> = ({name,onChangeFilePath,accept,headers,progress = null,buttonTitle,action,...rest
}) => {const { t } = useTranslation();const fileState: any = useRef();const [uploadFiles, setUploadFiles] = useState<UploadFile[]>([]);const updateFiles = (function () {let fileList: UploadFile[] | null = null;return function (list: UploadFile[], setState: React.Dispatch<React.SetStateAction<UploadFile[]>>) {if (!fileList) {fileList = list;setState && setState(list);}return {fileList,reset() {fileList = null;}};};})();const beforeUpload = (_: any, fileList: UploadFile[]) => {fileState.current = updateFiles(fileList, setUploadFiles);return false;}const customRequest = () => {if (uploadFiles.length > 0) {const path = uploadFiles.map(item => (item as any).path);// 这是electron的ipc处理函数，在node中复制文件sendMsgToMain({ key: 'fileMultiSelectPath', data: path }).then(filePath => {if (typeof onChangeFilePath === 'function') {onChangeFilePath(filePath);} else {Console.handleErrorMsg('onChangeFilePath is not a function');}});} else {Console.handleWarningMsg('no file uploaded');}}useEffect(() => {if (uploadFiles.length > 0) {customRequest();fileState.current.reset();}}, [uploadFiles]);return (<Uploadname={name || 'file'}accept={accept.join(',')}progress={progress}showUploadList={false}headers={headers}action={action}multiple={true}beforeUpload={beforeUpload}customRequest={customRequest}{...rest}><Button icon={<UploadOutlined />}> {buttonTitle || t('Select')} </Button></Upload>);
};export default FileMultiSelectButton;

在node中处理（不必须），这里主要因为electron需要兼容不同的平台，需要处理文件路径

function generateRandomString(length: number) {let result = '';const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';const charactersLength = characters.length;for (let i = 0; i < length; i++) {result += characters.charAt(Math.floor(Math.random() * charactersLength));}return result;
}
const fileSelectPath = (sourcePath: string) => {return new Promise((resolve, reject) => {const userDataPath = app.getPath('userData');// 获取用户数据目录,并在该目录下创建文件夹，用于保存用户数据，需要判断是否存在，如果存在则直接使用，否则创建，并返回该目录，用于后续操作，并需要兼容跨平台，比如windows和mac// 拼接出 files 目录的完整路径const filesDirPath = path.join(userDataPath, 'files');fs.mkdir(filesDirPath, { recursive: true }, err => {if (err) {// 如果目录创建失败，返回错误信息// 如果目录创建失败，处理错误console.error('Failed to create files directory:', err);}// 生成一个随机数const randomBytes = generateRandomString(8); // 生成8字节的随机数// 获取当前日期和时间const date = new Date();const formattedDate = date.toISOString().split('T')[0].replace(/-/g, ''); // 格式化为不含破折号的日期const formattedTime = date.toTimeString().split(' ')[0].replace(/:/g, ''); // 格式化为不含冒号的时间// 提取源文件名和扩展名const { name, ext } = path.parse(sourcePath);// 根据日期、时间和随机数生成一个新的文件名const newName = `${name}_${formattedDate}_${formattedTime}_${randomBytes}${ext}`;// 构造目标路径const destinationPath = path.join(filesDirPath, newName);// 使用fs模块的copy方法复制文件fs.copyFile(sourcePath, destinationPath, err => {if (err) {// 如果文件已存在或复制失败，返回错误信息reject(err);} else {// 复制成功，返回新的文件路径resolve(destinationPath);}});});});
};export const fileMultiSelectPath = (sourcePath: Array<string>) => {return Promise.all(sourcePath.map(async (sourcePath) => {return await fileSelectPath(sourcePath);}));
};