Node.js fs.mkdtemp()方法
fs.mkdtemp()方法用于创建唯一的临时目录。文件夹名称是通过在前缀字符串后面附加 6 个随机生成的字符来创建的。也可以通过在文件夹路径后使用分隔符在文件夹内创建临时目录。
语法:
fs.mkdtemp( prefix, options, callback )
参数:该方法接受三个参数，如上所述，如下所述:
- Prefix: It is a string that will always be used before six randomly generated numbers of the directory are created.
- Option: is a character string or object with encoding attribute, which can be used to specify the character encoding to be used.
- Callback: is a function that will be called when the method is executed.
- err: If the operation fails, this error will be thrown.
- Folder: is the path of the temporary folder created by the function.
下面的例子说明了 Node.js 中的 fs.mkdtemp()方法:
示例 1: 本示例在当前目录中创建一个前缀为“temp-”的临时目录。
// Node.js program to demonstrate the
// fs.mkdtemp() method
// Import the filesystem module
const fs = require('fs');
fs.mkdtemp("temp-", (err, folder) => {
if (err)
console.log(err);
else {
console.log("The temporary folder path is:", folder);
}
});
输出:
The temporary folder path is: temp-2jEcWI
示例 2: 本示例在操作系统的临时目录中创建一个临时文件夹。
// Node.js program to demonstrate the
// fs.mkdtemp() method
// Import the filesystem module
const fs = require('fs');
// Import the os module
const os = require('os');
// Get the separator from the path module
const { sep } = require('path');
// Get the temporary directory of the system
const tmpDir = os.tmpdir();
fs.mkdtemp(`${tmpDir}${sep}`, (err, folder) => {
if (err)
console.log(err);
else {
console.log("The temporary folder path is:", folder);
}
});
输出:
The temporary folder path is: C:\Users\userone\AppData\Local\Temp\2avQ7n
参考:https://nodejs . org/API/fs . html # fs _ fs _ mkdtemp _ prefix _ options _ callback
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