Node.js fs.realpathSync()方法

原文:https://www . geesforgeks . org/node-js-fs-realpath sync-method/

fs.realpathSync()方法用于同步计算给定路径的规范路径名。它是通过解决。,..以及路径中的符号链接，并返回解析后的路径。 语法:

fs.realpathSync( path, options )

参数:该方法接受两个参数，如上所述，如下所述:

• 路径:保存需要解析的目录路径。它可以是字符串、缓冲区或网址。
• 选项:它是一个字符串或对象，可用于指定将影响操作的可选参数。它有一个可选参数:
  • 编码:是定义解析路径编码的字符串。

返回:返回代表解析路径的字符串或缓冲区。 以下示例说明了 Node.js: 中的 fs.realpathSync()方法示例 1:

java 描述语言

// Node.js program to demonstrate the
// fs.realpathSync() method

// Import the filesystem module
const fs = require('fs');

console.log("Current Directory Path:", __dirname);

// Finding the canonical path
// one directory up
path1 = __dirname + "\\..";

resolvedPath = fs.realpathSync(path1);
console.log("One directory up resolved path is: ",
             resolvedPath);

// Finding the canonical path
// two directories up
path2 = __dirname + "\\..\\..";

resolvedPath = fs.realpathSync(path2);
console.log("Two directories up resolved path is: ",
             resolvedPath);

输出:

Current Directory Path: G:\tutorials\nodejs-fs-realPathSync
One directory up resolved path is:  G:\tutorials
Two directories up resolved path is:  G:\

例 2:

java 描述语言

// Node.js program to demonstrate the
// fs.realpathSync() method

// Import the filesystem module
const fs = require('fs');

path = __dirname + "\\..";

// Getting the canonical path is utf8 encoding
resolvedPath = fs.realpathSync(path, { encoding: "utf8" });
console.log("The resolved path is: ", resolvedPath);

// Getting the canonical path is hex encoding
resolvedPath = fs.realpathSync(path, { encoding: "hex" });
console.log("The resolved path is: ", resolvedPath);

// Getting the canonical path is base64 encoding
resolvedPath = fs.realpathSync(path, { encoding: "base64" });
console.log("The resolved path is: ", resolvedPath);

输出:

The resolved path is:  G:\tutorials
The resolved path is:  473a5c7475746f7269616c73
The resolved path is:  RzpcdHV0b3JpYWxz

参考:https://nodejs . org/API/fs . html # fs _ fs _ realathsync _ path _ options

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