javascript - 在 Express JS 中上传和调整图像大小时遇到​​问题

Question

 var express = require("express"),
    app = express(),
    formidable = require('formidable'),
    util = require('util'),
    fs   = require('fs-extra'),
    qt   = require('quickthumb');

// Use quickthumb
app.use(qt.static(__dirname + '/'));

app.post('/upload', function (req, res){
  var form = new formidable.IncomingForm();
  form.parse(req, function(err, fields, files) {
    res.writeHead(200, {'content-type': 'text/plain'});
    res.write('received upload:\n\n');
    res.end(util.inspect({fields: fields, files: files}));
  });

  form.on('end', function(fields, files) {
    /* Temporary location of our uploaded file */
    var temp_path = this.openedFiles[0].path;
    /* The file name of the uploaded file */
    var file_name = this.openedFiles[0].name;
    /* Location where we want to copy the uploaded file */
    var new_location = 'uploads/';

    fs.copy(temp_path, new_location + file_name, function(err) {  
      if (err) {
        console.error(err);
      } else {
        console.log("success!")
      }
    });
  });
});

// Show the upload form 
app.get('/', function (req, res){
  res.writeHead(200, {'Content-Type': 'text/html' });
  var form = '<form action="/upload" enctype="multipart/form-data" method="post">Add a title: <input name="title" type="text" /><br><br><input multiple="multiple" name="upload" type="file" /><br><br><input type="submit" value="Upload" /></form>';
  res.end(form); 
}); 
app.listen(8080);

我是 Node js 和 Express JS 的新手。我关注了这个guy's blog上传并调整图像大小。以上是代码部分。上传功能正在运行。但是，在调整大小功能方面，如果我想调整上传的图像大小，则会出现此错误:

events.js:85
      throw er; // Unhandled 'error' event
            ^
Error: spawn identify ENOENT
    at exports._errnoException (util.js:746:11)
    at Process._handle.onexit (child_process.js:1053:32)
    at child_process.js:1144:20
    at process._tickCallback (node.js:355:11)

Answer 1

您安装了imagemagick吗？ Quickthum 需要它来工作。