Node.js 在html表单NodeJs/Express中使用多部分/表单数据时,req.body不起作用
我正在使用Node.js 在html表单NodeJs/Express中使用多部分/表单数据时,req.body不起作用,node.js,express,body-parser,Node.js,Express,Body Parser,我正在使用body解析器从表单获取请求的信息,但是当我将enctype=“multipart/form data”放在表单的标题中时,req.body将根本不起作用 但是,我使用了multerlib来上传图像,如下所示: app.post("/", function (req, res, next) { var button = req.body.button_name; if (button == "upload") { var UserId = 2; var imag
body解析器
从表单获取请求的信息,但是当我将enctype=“multipart/form data”
放在表单的标题中时,req.body
将根本不起作用
但是,我使用了multer
lib来上传图像,如下所示:
app.post("/", function (req, res, next) {
var button = req.body.button_name;
if (button == "upload") {
var UserId = 2;
var imageUploadedLimited = 3;
var storage = multer.diskStorage({
destination: function (req, file, callback) {
var dir = "./public/images/uploads/";
if (!fs.existsSync(dir)) {
fs.mkdirSync(dir);
}
dir = "./public/images/uploads/" + UserId;
if (!fs.existsSync(dir)) {
fs.mkdirSync(dir);
}
callback(null, dir);
},
filename: function (req, file, cb) {
cb(null, file.fieldname + "-" + Date.now() + ".jpg");
},
});
const maxSize = 1 * 1000 * 1000;
var upload = multer({
storage: storage,
limits: { fileSize: maxSize },
fileFilter: function (req, file, cb) {
var filetypes = /jpeg|jpg|png/;
var mimetype = filetypes.test(file.mimetype);
var extname = filetypes.test(
path.extname(file.originalname).toLowerCase()
);
if (mimetype && extname) {
return cb(null, true);
}
cb(
"Error: File upload only supports the " +
"following filetypes - " +
filetypes
);
},
}).array("filename2", imageUploadedLimited);
upload(req, res, function (err) {
if (err) {
res.send(err);
} else {
res.send("Success, Image uploaded!");
}
});
}
});
如果我从第二行打印出
按钮
变量,将显示未定义的
值。我知道body解析器
不支持enctype=“multipart/form data”
。在这种情况下,如何从表单中看到值?如果您使用的是multer,则需要将其作为中间件传递
// Do Something like this
var multer = require('multer')
var storage = multer.diskStorage({
destination: function (req, file, cb) {
cb(null, 'Your path here')
},
filename: function (req, file, cb) {
cb(null, "fileName")
}
})
var upload = multer({
storage: storage,
})
app.post("/" ,upload.any(), function (req, res, next) {
// NOW YOU CAN ACCESS REQ BODY HERE
});
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