Node.js fs.statSync() 方法

fs.statSync() 方法用于同步返回有关给定文件路径的信息。返回的 fs.Stat 对象有几个字段和方法来获取有关文件的更多详细信息。
句法：

fs.statSync( path, options )

参数：此方法接受上面提到的两个参数，如下所述：

path：它保存必须检查的文件的路径。它可以是字符串、缓冲区或 URL。
options：它是一个对象，可用于指定将影响输出的可选参数。它有一个可选参数：
- bigint：它是一个布尔值，指定 fs.Stats 对象中返回的数值是否为 bigint。默认值为假。

返回：它返回一个包含文件路径详细信息的 Stats 对象。
下面的示例说明了 Node.js 中的fs.statSync() 方法：
示例 1：此示例使用 fs.statSync() 方法获取路径的详细信息。

javascript

// Node.js program to demonstrate the
// fs.statSync() method
  
// Import the filesystem module
const fs = require('fs');
  
// Getting information for a file
statsObj = fs.statSync("test_file.txt");
  
console.log(statsObj); 
console.log("Path is file:", statsObj.isFile());
console.log("Path is directory:", statsObj.isDirectory());
  
// Getting information for a directory
statsObj = fs.statSync("test_directory");
  
console.log(statsObj);
console.log("Path is file:", statsObj.isFile());
console.log("Path is directory:", statsObj.isDirectory());

javascript

// Node.js program to demonstrate the
// fs.stat() method
  
// Import the filesystem module
const fs = require('fs');
  
statsObj = fs.statSync("test_file.txt");
console.log(statsObj);
  
// Using the bigint option to return
// the values in big integer format
statsObj = fs.statSync("test_file.txt", {bigint: true});
console.log(statsObj);

输出：

Stats {
  dev: 3229478529,
  mode: 33206,
  nlink: 1,
  uid: 0,
  gid: 0,
  rdev: 0,
  blksize: 4096,
  ino: 1970324837039946,
  size: 0,
  blocks: 0,
  atimeMs: 1582306776282,
  mtimeMs: 1582482953967,
  ctimeMs: 1582482953968.2532,
  birthtimeMs: 1582306776282.142,
  atime: 2020-02-21T17:39:36.282Z,
  mtime: 2020-02-23T18:35:53.967Z,
  ctime: 2020-02-23T18:35:53.968Z,
  birthtime: 2020-02-21T17:39:36.282Z
}
Path is file: true
Path is directory: false
Stats {
  dev: 3229478529,
  mode: 16822,
  nlink: 1,
  uid: 0,
  gid: 0,
  rdev: 0,
  blksize: 4096,
  ino: 562949953486669,
  size: 0,
  blocks: 0,
  atimeMs: 1582482965037.8445,
  mtimeMs: 1581074249467.7114,
  ctimeMs: 1582482964979.8303,
  birthtimeMs: 1582306776288.1958,
  atime: 2020-02-23T18:36:05.038Z,
  mtime: 2020-02-07T11:17:29.468Z,
  ctime: 2020-02-23T18:36:04.980Z,
  birthtime: 2020-02-21T17:39:36.288Z
}
Path is file: false
Path is directory: true

示例 2：此示例使用 fs.statSync() 方法通过 bigint 选项获取文件的详细信息。

javascript

// Node.js program to demonstrate the
// fs.stat() method
  
// Import the filesystem module
const fs = require('fs');
  
statsObj = fs.statSync("test_file.txt");
console.log(statsObj);
  
// Using the bigint option to return
// the values in big integer format
statsObj = fs.statSync("test_file.txt", {bigint: true});
console.log(statsObj);

输出：

Stats {
  dev: 3229478529,
  mode: 33206,
  nlink: 1,
  uid: 0,
  gid: 0,
  rdev: 0,
  blksize: 4096,
  ino: 1970324837039946,
  size: 0,
  blocks: 0,
  atimeMs: 1582306776282,
  mtimeMs: 1582482953967,
  ctimeMs: 1582482953968.2532,
  birthtimeMs: 1582306776282.142,
  atime: 2020-02-21T17:39:36.282Z,
  mtime: 2020-02-23T18:35:53.967Z,
  ctime: 2020-02-23T18:35:53.968Z,
  birthtime: 2020-02-21T17:39:36.282Z
}
BigIntStats {
  dev: 3229478529n,
  mode: 33206n,
  nlink: 1n,
  uid: 0n,
  gid: 0n,
  rdev: 0n,
  blksize: 4096n,
  ino: 1970324837039946n,
  size: 0n,
  blocks: 0n,
  atimeMs: 1582306776282n,
  mtimeMs: 1582482953967n,
  ctimeMs: 1582482953968n,
  birthtimeMs: 1582306776282n,
  atimeNs: 1582306776282000000n,
  mtimeNs: 1582482953967000000n,
  ctimeNs: 1582482953968253100n,
  birthtimeNs: 1582306776282142200n,
  atime: 2020-02-21T17:39:36.282Z,
  mtime: 2020-02-23T18:35:53.967Z,
  ctime: 2020-02-23T18:35:53.968Z,
  birthtime: 2020-02-21T17:39:36.282Z
}

参考： https://nodejs.org/api/fs.html#fs_fs_statsync_path_options