我的节点上传文件代码是否有任何问题：
app.post("/process/:year/:month", function(req,res){
const dataDir = __dirname + '/public/data';
const photoDir = dataDir + '/upload-logo';
fs.stat(dataDir, function(err, stat) {
if(err == null) {
console.log('File exists');
return;
} else if(err.code == 'ENOENT') {
// file does not exist
fs.mkdirSync(dataDir);
return;
} else {
console.log('Some other error: ', err.code);
return;
}
});
fs.stat(photoDir, function(err, stat) {
if(err == null) {
console.log('File exists');
return;
} else if(err.code == 'ENOENT') {
// file does not exist
fs.mkdirSync(photoDir);
return;
} else {
console.log('Some other error: ', err.code);
return;
}
});
try{
//store the data to the database
console.info('Received contact from ' + req.user.local.username + " <" + req.body.email + '>' );
console.log('the file uploaded: ' , JSON.stringify(req.body));
const form = new formidable.IncomingForm();
form.parse(req,function(err,fields,files){
if(err){return res.redirect(303, '/404');}
const photo = files.photo;
const timeDir = `${req.params.year}${req.params.month}`;
const thedir = photoDir + `/${req.params.year}${req.params.month}`;//prevent uploading file with the same name
fs.stat(thedir, function(err, stat) {
console.log('stat parts begins...');
if(err == null) {
console.log('File exists');
return;
} else if(err.code == 'ENOENT') {
// file does not exist
console.log('the file does not exist.now creating...');
fs.mkdirSync(thedir);
return;
} else {
console.log('Some other error: ', err.code);
return;
}
});
const photoName = Date.now() + photo.name;
const fullPath = thedir + '/' + photoName;
console.log('the dir is :' + thedir);
console.log(photo.name,photo.path,fullPath);
fs.renameSync(photo.path, fullPath);//rename or move the file uploaded;and photo.path is the temp file Formidable give
if(req.user){
function saveFileInfo(){
const user = req.user;
user.local.logo = timeDir + '/' + phontoName;
user.save(function(err){
if(err){throw err}
req.flash('success','Upload your logo successfully');
res.redirect('/user/profile');
});
}
// saveFileInfo('upload-photo', fields.email,req.params.year,fields.params.year,fields.params.month,path);
}else{
console.log('user not login');
req.flash('eror','You need to login first to upload your logo');
res.redirect(303, '/login');
}
//console.log('received fields:', fields);
//console.log('received files:', photo.name);
});
req.flash('success', 'Uploading successfully!')
return res.xhr ? res.render({success: true}) :
res.redirect(303, '/success');
} catch(ex){
return res.xhr ?
res.json({err: 'Database error.'}):
res.redirect(303, '/db-error');
}
});
上面的代码给了我错误：
fs.js:681
return binding.rename(pathModule._makeLong(oldPath),
^
Error: ENOENT: no such file or directory, rename '/var/folders/vq/cdlwyckx68zdf586bd3c789h0000gn/T/upload_2e1c480cfbdf943fe1dd45dbb2ccc37e' -> '/Users/frank25184/Desktop/nodejs/nodeForm-team/public/data/upload-logo/20167/147114292564330682361630021890.jpg'
at Error (native)
at Object.fs.renameSync (fs.js:681:18)
at /Users/frank25184/Desktop/nodejs/nodeForm-team/routes.js:496:24
at IncomingForm.<anonymous> (/Users/frank25184/Desktop/nodejs/nodeForm-team/node_modules/formidable/lib/incoming_form.js:105:9)
at emitNone (events.js:67:13)
at IncomingForm.emit (events.js:166:7)
at IncomingForm._maybeEnd (/Users/frank25184/Desktop/nodejs/nodeForm-team/node_modules/formidable/lib/incoming_form.js:553:8)
at /Users/frank25184/Desktop/nodejs/nodeForm-team/node_modules/formidable/lib/incoming_form.js:230:12
at WriteStream.<anonymous> (/Users/frank25184/Desktop/nodejs/nodeForm-team/node_modules/formidable/lib/file.js:70:5)
at WriteStream.g (events.js:260:16)
at emitNone (events.js:72:20)
at WriteStream.emit (events.js:166:7)
at finishMaybe (_stream_writable.js:481:14)
at afterWrite (_stream_writable.js:355:3)
at onwrite (_stream_writable.js:345:7)
at WritableState.onwrite (_stream_writable.js:89:5)
答案 0 :(得分：0)
我不清楚你想要的商店上传文件，所以可能会有问题。
let async = require('async');
const dataDir = __dirname + '/public/data';
const tempDir = __dirname + '/public/temp';
...
function checkDir(dir, callback) {
fs.stats(dir, function(err, stats) {
if (!err)
return callback();
if (stats.isFile())
return callback(new Error(dir + ' is file'));
if (err.code != 'ENOENT')
return callback(err);
fs.mkdir(dir, callback);
})
}
...
async.each([dataDir, tempDir], checkDir, (err) => throw err);
...
function isAuth(req, res, next) {
if (req.user)
return next();
console.log(req.url, ': user not login' );
req.flash('error','You need to login first to upload your logo');
res.redirect(303, '/login');
}
// Check login user in middleware isAuth
// Error pass by Error handler middleware
app.post("/process/:year/:month", isAuth, function(req, res, next){
console.info('Received contact from ...');
console.log('the file uploaded: ', JSON.stringify(req.body));
const form = new formidable.IncomingForm();
form.uploadDir = tempDir;
form.parse(req, function (err, fields, files) {
if(err)
return next (err);
const photo = files.photo;
const targetDir = dataDir + `/${req.params.year}${req.params.month}/`;
const targetPath = targetDir + '/' + targetname + Date.now() + photo.name; // ???
async.Series([
function(callback) { checkDir(targetDir, callback); },
function(callback) { fs.rename(tempDir + '/' + photo, targetPath, callback); },
function(callback) { req.user.local.logo=targetPath; req.user.save(callback); }
], function (err) {
if (err)
return next(err);
req.flash('success', 'Uploading successfully!')
return res.xhr ?
res.render({success: true}) :
res.redirect(303, '/success'); //? res.redirect('/user/profile');
});
});
});
// send error to user
app.use(function(err, req, res, next) {
req.flash('error', err.message);
return res.xhr ? ...
})