Question

我正在尝试使用GraphicsMagick获取有关图像的一些信息，使用node.js Exec执行子进程，这里是代码：

var execGm= require('child_process').execFile;
var child;
child = execGm('gm identify /path/to/my/image/file/test.tif',
function (error, stdout, stderr) {
console.log('stdout: ' + stdout);
console.log('stderr: ' + stderr);
if (error !== null) {
  console.log('exec error: ' + error);
  }
});

在节点日志中我得到了这个结果：stdout: stderr: exec error: Error: spawn ENOENT。如果我直接从我的MAC控制台执行命令gm identify /path/to/my/image/file/test.tif，我会从图像中获取所有信息。在我看来，gm可执行文件找不到该文件，因为child = execGm('gm',etc....节点返回此日志：

  stdout: GraphicsMagick 1.3.19 2013-12-31 Q8 http://www.GraphicsMagick.org/
  Copyright (C) 2002-2013 GraphicsMagick Group.
  Additional copyrights and licenses apply to this software.
  See http://www.GraphicsMagick.org/www/Copyright.html for details.
  Usage: gm command [options ...]

  Where commands include: 
  batch - issue multiple commands in interactive or batch mode
  benchmark - benchmark one of the other commands
  compare - compare two images
  composite - composite images together
  conjure - execute a Magick Scripting Language (MSL) XML script
  convert - convert an image or sequence of images
  help - obtain usage message for named command
  identify - describe an image or image sequence
  mogrify - transform an image or sequence of images
  montage - create a composite image (in a grid) from separate images
  time - time one of the other commands
  version - obtain release version

  stderr: 
  exec error: Error: Command failed: `

我尝试了几条路径，但没有路线......

Answer 1

根据@alexeyten的建议，缺少一些格式正确的参数，

child = execGm('gm', [ 'identify', '/path/to/my/image/file/test.tif'], ...

node.js exec无法找到文件

1 个答案: