我试图创建一个完整的路径，如果它不存在。
代码如下所示:
var fs = require('fs');
if (!fs.existsSync(newDest)) fs.mkdirSync(newDest);
只要只有一个子目录(像'dir1'这样的newDest)，这段代码就能很好地工作，但是当有一个目录路径('dir1/dir2')时，它就会失败 错误:ENOENT，没有这样的文件或目录
我希望能够用尽可能少的代码行创建完整的路径。
我读到fs上有一个递归选项，并尝试了这样做
var fs = require('fs');
if (!fs.existsSync(newDest)) fs.mkdirSync(newDest,'0777', true);
我觉得递归地创建一个不存在的目录应该这么简单。我是否遗漏了一些东西，或者我是否需要解析路径并检查每个目录，如果它不存在，则创建它?
我对Node很陌生。也许我使用的是旧版本的FS?
当前回答
你可以简单地检查文件夹存在或不递归的路径，并使文件夹，因为你检查，如果他们不存在。(没有外部库)
function checkAndCreateDestinationPath (fileDestination) {
const dirPath = fileDestination.split('/');
dirPath.forEach((element, index) => {
if(!fs.existsSync(dirPath.slice(0, index + 1).join('/'))){
fs.mkdirSync(dirPath.slice(0, index + 1).join('/'));
}
});
}
其他回答
const fs = require('fs');
try {
fs.mkdirSync(path, { recursive: true });
} catch (error) {
// this make script keep running, even when folder already exist
console.log(error);
}
这个版本在Windows上比上面的答案工作得更好，因为它同时理解/和路径。sep，以便向前斜杠在Windows上工作，因为他们应该。支持绝对路径和相对路径(相对于process.cwd)。
/**
* Creates a folder and if necessary, parent folders also. Returns true
* if any folders were created. Understands both '/' and path.sep as
* path separators. Doesn't try to create folders that already exist,
* which could cause a permissions error. Gracefully handles the race
* condition if two processes are creating a folder. Throws on error.
* @param targetDir Name of folder to create
*/
export function mkdirSyncRecursive(targetDir) {
if (!fs.existsSync(targetDir)) {
for (var i = targetDir.length-2; i >= 0; i--) {
if (targetDir.charAt(i) == '/' || targetDir.charAt(i) == path.sep) {
mkdirSyncRecursive(targetDir.slice(0, i));
break;
}
}
try {
fs.mkdirSync(targetDir);
return true;
} catch (err) {
if (err.code !== 'EEXIST') throw err;
}
}
return false;
}
我对fs的递归选项有问题。mkdir，所以我做了一个函数，做以下工作:
Creates a list of all directories, starting with the final target dir and working up to the root parent. Creates a new list of needed directories for the mkdir function to work Makes each directory needed, including the final function createDirectoryIfNotExistsRecursive(dirname) { return new Promise((resolve, reject) => { const fs = require('fs'); var slash = '/'; // backward slashes for windows if(require('os').platform() === 'win32') { slash = '\\'; } // initialize directories with final directory var directories_backwards = [dirname]; var minimize_dir = dirname; while (minimize_dir = minimize_dir.substring(0, minimize_dir.lastIndexOf(slash))) { directories_backwards.push(minimize_dir); } var directories_needed = []; //stop on first directory found for(const d in directories_backwards) { if(!(fs.existsSync(directories_backwards[d]))) { directories_needed.push(directories_backwards[d]); } else { break; } } //no directories missing if(!directories_needed.length) { return resolve(); } // make all directories in ascending order var directories_forwards = directories_needed.reverse(); for(const d in directories_forwards) { fs.mkdirSync(directories_forwards[d]); } return resolve(); }); }
我知道这是一个老问题，但是nodejs v10.12.0现在通过将递归选项设置为true在本地支持这个选项。fs.mkdir
// Creates /tmp/a/apple, regardless of whether `/tmp` and /tmp/a exist.
fs.mkdir('/tmp/a/apple', { recursive: true }, (err) => {
if (err) throw err;
});
这个方法怎么样:
if (!fs.existsSync(pathToFile)) {
var dirName = "";
var filePathSplit = pathToFile.split('/');
for (var index = 0; index < filePathSplit.length; index++) {
dirName += filePathSplit[index]+'/';
if (!fs.existsSync(dirName))
fs.mkdirSync(dirName);
}
}
这适用于相对路径。
