nodejs Node.js fsPromises.stat()方法

Node.js fsPromises.stat()方法

原文:https://www . geesforgeks . org/node-js-fspromiss-stat-method/

fsPromises.stat() 方法用于返回给定文件或目录的信息。承诺与 fs 解决。给定路径的 Stats 对象。

语法:

fsPromises.stat( path, options )

参数:该方法接受两个参数，如上所述，如下所述:

Path: The path to save the file or directory to be checked. It can be a string, a buffer or a web address.
Option: is an object that can be used to specify optional parameters that affect output. It has an optional parameter:
- bigint: It is a Boolean value that specifies whether the value returned in fs is. The Stats object is bigint. The default value is false.

下面的例子说明了 Node.js 中的 fsPromises.stat() 方法:

示例 1: 本示例使用 fsPromises.stat()方法获取路径的详细信息。

// Node.js program to demonstrate the 
// fsPromises.stat() method 

// Import the filesystem module 
const fsPromises = require("fs").promises;
(async () => {
  try {
    await fsPromises.rename("GFG.txt", 
                "GeeksforGeeks.txt");

    // Using the fsPromises.stat() method
    const stats = await fsPromises.stat(
          "GeeksforGeeks.txt");
    console.log(stats);
  } 
  catch (error) {
    console.log(error);
  }
})();

输出:

Stats {
  dev: 654202934,
  mode: 85416,
  nlink: 1,
  uid: 0,
  gid: 0,
  rdev: 0,
  blksize: undefined,
  ino: 6192449489177455,
  size: 0,
  blocks: undefined,
  atimeMs: 5126587454188,
  mtimeMs: 8845632838067,
  ctimeMs: 5214789541254.1998,
  birthtimeMs: 1572568634187.734,
  atime: 2020-06-10T00:25:14.198ZZ,
  mtime: 2020-06-10T00:38:38.068Z,
  ctime: 2020-06-10T00:38:47.450Z,
  birthtime: 2020-06-101T00:25:14.198Z }

示例 2: 本示例使用 fsPromises.stat() 方法，使用 bigint 选项获取文件的详细信息:

// Node.js program to demonstrate the 
// fsPromises.stat() method 

// Import the filesystem module 
const fsPromises = require("fs").promises;
(async () => {
  try {
    await fsPromises.rename("GFG.txt", 
                 "GeeksforGeeks.txt");

    // Using the fsPromises.stat() method
    const stats = await fsPromises.stat(
      ("GeeksforGeeks.txt"), {bigint: true});
    console.log(stats);
  } 
  catch (error) {
    console.log(error);
  }
})();

输出:

Stats {
 dev: 2269,
 mode: 33188,
 nlink: 1,
 uid: 1000,
 gid: 1000,
 rdev: 0,
 blksize: 4096,
 ino: 271,
 size: 0,
 blocks: 0,
 atimeMs: 1582871562365.894,
 mtimeMs: 1582871556897.5554,
 ctimeMs: 1582871556897.5554,
 birthtimeMs: 1582871556897.5554,
 atime: 2020-02-28T06:32:42.366Z,
 mtime: 2020-02-28T06:32:36.898Z,
 ctime: 2020-02-28T06:32:36.898Z,
 birthtime: 2020-02-28T06:32:36.898Z }

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