我有这段代码:
router.route("/post")
.get(function(req, res) {
...
})
.post(authReq, function(req, res) {
...
// Get uploaded file
var fstream
req.pipe(req.busboy)
req.busboy.on('file', function (fieldname, file, filename, encoding, mimetype) {
...
var fileSuffix = mimetype.split("/")[1] // Get suffix, may not always be correct
var tmpFileName = postCount + "." + fileSuffix
var tmpFileURL = __dirname + "/tmp/" + tmpFileName
// Start writing
fstream = fs.createWriteStream(tmpFileURL)
file.pipe(fstream)
fstream.on('close', function() {
...
})
})
})
})
这种使用可以完美地工作。但是,我不太清楚发生了什么,但是我今天拿起我的电脑,发现每次我尝试发布时都会出现这个错误:
TypeError: Cannot call method 'on' of undefined
at IncomingMessage.Readable.pipe (_stream_readable.js:494:8)
at /Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/Dev/LaughItUp/Code/Server/apiRoutes.js:139:8
at Layer.handle [as handle_request] (/Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/Dev/LaughItUp/Code/Server/node_modules/express/lib/router/layer.js:82:5)
at next (/Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/Dev/LaughItUp/Code/Server/node_modules/express/lib/router/route.js:100:13)
at authReq (/Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/Dev/LaughItUp/Code/Server/apiRoutes.js:17:3)
at Layer.handle [as handle_request] (/Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/Dev/LaughItUp/Code/Server/node_modules/express/lib/router/layer.js:82:5)
at next (/Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/Dev/LaughItUp/Code/Server/node_modules/express/lib/router/route.js:100:13)
at next (/Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/Dev/LaughItUp/Code/Server/node_modules/express/lib/router/route.js:94:14)
at Route.dispatch (/Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/Dev/LaughItUp/Code/Server/node_modules/express/lib/router/route.js:81:3)
at Layer.handle [as handle_request] (/Users/nathan/Library/Mobile Documents/com~apple~CloudDocs/Dev/LaughItUp/Code/Server/node_modules/express/lib/router/layer.js:82:5)
_stream_readable.js:501
dest.end();
^
TypeError: Cannot call method 'end' of undefined
at IncomingMessage.onend (_stream_readable.js:501:10)
at IncomingMessage.g (events.js:180:16)
at IncomingMessage.emit (events.js:92:17)
at _stream_readable.js:943:16
at process._tickCallback (node.js:419:13)
在我的index.js
文件中,我有使用 Busboy 的代码:
app.use(busboy())
然后这段代码包含我的路线:
app.use("/api", require("./apiRoutes.js")())
提前致谢!
编辑:我做了更多的调试,我想我查明了这个问题。req.busboy
没有定义。所以我去挖掘源代码。以下是connect-busboy
模块中的一些代码:
if (req.busboy
|| req.method === 'GET'
|| req.method === 'HEAD'
|| !hasBody(req)
|| !RE_MIME.test(mime(req)))
return next()
当我打印出实际值时,busboy 不存在,请求方法是'POST',hasBody(req)
结果为真,但RE_MIME.test(mime(req)))
结果为假,这就是为什么没有将 busboy 添加到请求中的原因。
我的示例文件的 MIME 类型是image/gif
. 这是正则表达式connect-busboy
正在测试image/gif
(又名RE_MIME
变量):
/^(?:multipart\/.+)|(?:application\/x-www-form-urlencoded)$/i;
因此,我得出的结论是我误解了 API。Busboy 是否仅适用于 HTML 表单?
编辑#2:我只是切换到Multer,它工作正常。但是,我认为我的问题是我需要将文件放在请求的多部分中;我不知道为什么它以前工作。谢谢!