在 nodejs 中使用 Multer 上传文件

Question

我使用Multer 1.2.0 版和nodejs，每当我尝试以base64 上传图像时出现错误--错误：字段值太长 错误

Error: Field value too long
at makeError (C:\xampp\htdocs\sitename\node_modules\multer\lib\make-error.js:12:13)
at abortWithCode (C:\xampp\htdocs\sitename\node_modules\multer\lib\make-middleware.js:77:22)
at Busboy.<anonymous> (C:\xampp\htdocs\sitename\node_modules\multer\lib\make-middleware.js:83:34)
at Busboy.emit (events.js:118:17)
at Busboy.emit (C:\xampp\htdocs\sitename\node_modules\multer\node_modules\busboy\lib\main.js:31:35)
at PartStream.onEnd (C:\xampp\htdocs\sitename\node_modules\multer\node_modules\busboy\lib\types\multipart.js:261:15)
at PartStream.emit (events.js:129:20)
at Dicer.onPart (C:\xampp\htdocs\sitename\node_modules\multer\node_modules\busboy\lib\types\multipart.js:120:13)
at Dicer.emit (events.js:107:17)
at Dicer.emit (C:\xampp\htdocs\sitename\node_modules\multer\node_modules\busboy\node_modules\dicer\lib\Dicer.js:80:35) 

代码：

var multer  = require('multer');

var storage = multer.diskStorage({
    destination: function (req, file, cb) {
        cb(null, './photos')
    },
    filename: function (req, file, cb) {
        cb(null, file.fieldname + '-' + Date.now())
    }
})

var upload = multer({ storage: storage }).any()

app.post('/admin/uploadpicture', upload, function(req, res) {
    res.send('Test');
});

无法理解我在哪里失踪，请提出任何建议。 提前谢谢你。

Answer 1

使用限制选项增加字段数据限制：

multer({
  limits: { fieldSize: 2 * 1024 * 1024 }
})

refer link

Answer 2

您可以使用 upload.array('field') 上传任意数量的文件。