[英]Error In Multer When Trying To Upload A Image
目前是 multer 的新手,所以这是我的问题:当我尝试将 jpg 图像发布到 mysql 时,我一直收到MulterError: Unexpected field
作为输出。 谁能看到我的代码中的错误是什么? 目前我试图在上传超过 1MB 的图像时发出错误消息。
var multer = require('multer');
var path = require('path');
var storage = multer.diskStorage({
destination: function (req, file, callback) {
callback(null, './uploads');
},
filename: function (req, file, callback) {
callback(null, file.fieldname + '-' + new Date().toISOString() + '-' + path.extname(file.originalname));
}
});
var upload = multer({storage: storage});
// Endpoint 13 (EXTRA FEATURE 1)
const fileFilter = (req, file, callback) => {
if(file.mimetype === 'image/jpg') {
callback(null,true);
}
callback(null,false);
}
var uploadFromDesktop = multer({
storage:storage,
limits: {
fieldSize: 1024 * 1024
},
fileFilter: fileFilter
});
app.post("/upload/", upload.single('productImage'), (req, res, next) => {
uploadFromDesktop(req,res),(error) => {
console.log(error);
if (error) {
if (error.code === 'LIMIT_FILE_SIZE') {
} else {
res.status(500).send({ 'status': status, 'error':error})
}
} else {
var temp = req.file.path;
var file = uploadDir + req.file.originalname;
var source = fs.createReadStream(temp);
var destination = fs.createWriteStream(file);
source.pipe(destination);
fs.unlink(temp);
source.on('end',function () {
var result = {
'status': 'success',
'file': file
}
fs.chmod(file,0777);
res.send(result);
})
source.on('error', function (error) {
var result = {
'status': 'Fail',
'error': error
};
res.send(result);
})
}
}
})
尝试使用文件大小:
限制:{文件大小:2 * 1024 * 1024 // 2 MB}
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