Question

我使用此代码＆＃34; multer＆＃34;将文件上传到我的服务器。即使我有限制文件大小，也只是忽略它并上传文件。

const multer = require("multer");
const path = require("path");
const storage = multer.diskStorage({
    destination: function (req, file, cb) {
        cb(null, "uploads/");
    },
    limits: {
        fileSize: 1024 * 1024
    }
});

const upload = multer(
{
    storage: storage
}
).single("file");

router.post("/files/postfile", function (req: any, res: any, next) {

    upload(req, res, function (err) {
        if (err) {
            return res.json({error: err});
        }
        return res.json({success: true});
    });

});

Answer 1

const upload = multer({
    storage: storage,
    limits: {
        fileSize: 1024 * 1024
    }
}).single("file");

从limits

中删除multer.diskStorage

Answer 2

您的代码效率很低。

const multer = require("multer");
const path = require("path");
const storage = multer.diskStorage({
    destination: function (req, file, cb) {
        cb(null, "uploads/");
    }
});

const upload = multer({
    storage: storage,
    limits: {
        fileSize: 1024 * 1024
    }
});

router.post("/files/postfile", upload.single("file"); function (req: any, res: any, next) {
    // . . . . code . . . .

});

通过使用中间件，您可以编写有效的代码我推荐这种方法。如果在multer.diskStorage（）调用时使用filename属性，则可以使用文件名chage。

    destination: function (req, file, cb) {
        cb(null, "uploads/");
    },
    filename: function(req, file, cb){
        cb(null, 'unique_name.jpg'); # example: timestamp, utc, etc
    },
    limits: {
        fileSize: 1024 * 1024
    }

文件名可以复制。

Nodejs - 使用multer捕获filesize错误

2 个答案: