Home Web Front-end JS Tutorial nodejs calls the cmd command to copy the directory_node.js

nodejs calls the cmd command to copy the directory_node.js

May 16, 2016 pm 04:01 PM

工作中一直需要对一些官网进行文件复制,并且替换内部的一些信息,以前都是手动操作的,或者通过自己写的firefox扩展来进行文件操作的。

现在前端有nodejs了,为什么不用nodejs写个一键式的呢~~

1.复制目录

复制文件的时候,如果直接创建一个不存在的文件目录下就不成功了。要上级目录存在才可以。(nodejs API接触时间不长,如有有误,谢谢指正)。

这样在写入文件的时候就检测一下目录是否存在,不存在则判断上级目录,之后一级一级目录创建回来,之后就可以复制文件了

var dirCache = {};//缓存减少判断
function makedir (pathStr, callback) {
  if (dirCache[pathStr] == 1) {
    callback();
  } else {
    fs.exists(pathStr, function (exists) {
      if (exists == true) {
        dirCache[pathStr] == 1;
        callback();
      } else {
        makedir(path.dirname(pathStr), function () {
          fs.mkdir(pathStr, function () {
            dirCache[pathStr] == 1;
            callback();
          })
        });
      }
    })
  }
};
Copy after login

2.后来还是考虑通过CMD命令“xcopy”实现,但是试了好9,直接执行,可是一直不行,有解决的,欢迎指正

var exec = require('child_process').exec;
  exec('xcopy D:\\WORK_new\\odinQuest D:\\WORK_new\\newGame /s /e /Q /Y /I',
    function (error, stdout, stderr) {
      if (error !== null) {
        //console.log('exec error: ' + error);
      }
    
  });
Copy after login

  后来通过将CMD命令写入文件,通过call的方式调用的,就可以了。

fs.writeFile('xcopy.bat', cmdstr, function (err) {
  if (err) throw err;
  var exec = require('child_process').exec;
  exec('call "'+process.cwd()+'/xcopy.bat',
    function (error, stdout, stderr) {
      if (error !== null) {
        //console.log('exec error: ' + error);
      }
    
  });
}); 
Copy after login

嗯,代码写的也就那样,都是一步步的异步嵌套,就不放出来了,省的被笑话

以上所述就是本文的全部内容了,希望大家能够喜欢。

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