注意，前情提示：

本代码基于《Node.js(nodejs)对本地JSON文件进行增、删、改、查操作(轻车熟路)》

传送门https://blog.csdn.net/qq_37860634/article/details/103781523

在/api/demo/文件夹下面创建copyFileOrFolder.js和deleteFileOrFolder.js

copyFileOrFolder.js代码内容

const $g = global.SG.$g, fs = global.SG.fs, router = global.SG.router, path = global.SG.path;

module.exports = global.SG.router;

const copyFileOrFolerPath = "./json/demo/demo.json";//被复制的文件路径

const pasteFileOrFolerPath = "./json/demoBak/demoBak.json";//粘贴文件路径

// const copyFileOrFolerPath = "./json";//被复制的文件夹路径

// const pasteFileOrFolerPath = "./temp";//粘贴文件夹路径

const copyDir = (src, dst) => {

//读取目录中的所有文件/目录

fs.readdir(src, (err, paths) => {

if (err) throw err;

paths.forEach(path => {

const _src = src + "/" + path, _dst = dst + "/" + path;

let readable, writable;

fs.stat(_src, (err, st) => {

if (err) throw err;

if (st.isFile()) {//是文件

readable = fs.createReadStream(_src);//创建读取流

writable = fs.createWriteStream(_dst);//创建写入流

readable.pipe(writable);//通过管道来传输流

} else {//是文件夹

copyFolder(_src, _dst);//如果是目录则递归调用自身

}

});

});

});

};

//复制文件夹

const copyFolder = (src, dst) => fs.existsSync(dst) ? copyDir(src, dst) : fs.mkdir(dst, () => copyDir(src, dst));

const mkdirs = $g.dir.mkdirsByFilePath;//递归创建文件夹目录(基于文件路径)

const resJson = (req, res) => {

fs.copyFile(copyFileOrFolerPath, pasteFileOrFolerPath, err => {

$g.json.res(req, res, `复制${copyFileOrFolerPath}${err ? "失败" : "成功"}`, {err, copyFileOrFolerPath, pasteFileOrFolerPath}, true);

});

};

//复制并且粘贴(覆盖无提示)文件(all方法支持POST、GET、PUT、PATCH、DELETE传参方式)

router.all("/demo/copyFileOrFolder", (req, res) => {

if (fs.statSync(copyFileOrFolerPath).isFile()) {//是文件

mkdirs(pasteFileOrFolerPath, () => resJson(req, res));//复制文件

} else {//是文件夹

copyFolder(copyFileOrFolerPath, pasteFileOrFolerPath);//复制文件夹

$g.json.res(req, res, `复制${copyFileOrFolerPath}成功`, {err: null, copyFileOrFolerPath, pasteFileOrFolerPath}, true);

}

});

deleteFileOrFolder.js代码内容

const $g = global.SG.$g, fs = global.SG.fs, router = global.SG.router, path = global.SG.path;

module.exports = global.SG.router;

// const deleteFileOrFolderPath = "./json/demoBak/demoBak.json";//被删除文件路径

const deleteFileOrFolderPath = "./json/demoBak";//被删除文件夹路径

const deleteFileOrFolderRecursive = (url, callback) => {

//判断给定的路径是否存在

fs.exists(url, exists => {

if (exists) {

if (fs.statSync(url).isFile()) {//是文件

fs.unlink(url, err => callback(err));

} else {//是文件夹

let __del = (url, callback) => {

let files = [];

//判断给定的路径是否存在

files = fs.readdirSync(url);//返回文件和子目录的数组

files.forEach((file, index) => {

let curPath = path.join(url, file);

if (fs.statSync(curPath).isDirectory()) {

__del(curPath);//fs.statSync同步读取文件夹文件，如果是文件夹，在重复触发函数

} else {

fs.unlinkSync(curPath);

}

});

fs.rmdirSync(url);//清除文件夹

callback && callback();

};

__del(url, callback);

}

} else {

callback("亲，您提供的是一个子虚乌有的路径！");

}

});

};

const resJson = (req, res, err) => $g.json.res(req, res, `删除${deleteFileOrFolderPath}${err ? "失败" : "成功"}`, {err, deleteFileOrFolderPath}, !err);

//删除文件or文件夹(覆盖无提示)文件(all方法支持POST、GET、PUT、PATCH、DELETE传参方式)

router.all("/demo/deleteFileOrFolder", (req, res) => deleteFileOrFolderRecursive(deleteFileOrFolderPath, err => resJson(req, res, err)));

在index.js最后一行加入

app.use(API_PATH, require(`.${API_PATH}/demo/copyFileOrFolder`));//复制文件or文件夹

app.use(API_PATH, require(`.${API_PATH}/demo/deleteFileOrFolder`));//删除文件or文件夹

运行

node index