图片上传,node做的数据接收，找不到文件对象

Question

收到数据，找不到文件对象，请问文件对象的接收是否成功？以下是req对象的内容

IncomingMessage {
  _readableState:
   ReadableState {
     objectMode: false,
     highWaterMark: 16384,
     buffer: [],
     length: 0,
     pipes: null,
     pipesCount: 0,
     flowing: null,
     ended: false,
     endEmitted: false,
     reading: false,
     sync: true,
     needReadable: false,
     emittedReadable: false,
     readableListening: false,
     resumeScheduled: false,
     defaultEncoding: 'utf8',
     ranOut: false,
     awaitDrain: 0,
     readingMore: false,
     decoder: null,
     encoding: null },
  readable: true,
  domain: null,
  _events: {},
  _eventsCount: 0,
  _maxListeners: undefined,
  socket:
   Socket {
     connecting: false,
     _hadError: false,
     _handle:
      TCP {
        bytesRead: 657,
        _externalStream: {},
        fd: -1,
        reading: true,
        owner: [Circular],
        onread: [Function: onread],
        onconnection: null,
        writeQueueSize: 0 },
     _parent: null,
     _host: null,
     _readableState:
      ReadableState {
        objectMode: false,
        highWaterMark: 16384,
        buffer: [],
        length: 0,
        pipes: null,
        pipesCount: 0,
        flowing: true,
        ended: false,
        endEmitted: false,
        reading: true,
        sync: false,
        needReadable: true,
        emittedReadable: false,
        readableListening: false,
        resumeScheduled: false,
        defaultEncoding: 'utf8',
        ranOut: false,
        awaitDrain: 0,
        readingMore: false,
        decoder: null,
        encoding: null },
     readable: true,
     domain: null,
     _events:
      { end: [Object],
        finish: [Function: onSocketFinish],
        _socketEnd: [Function: onSocketEnd],
        drain: [Object],
        timeout: [Function],
        error: [Object],
        close: [Object],
        data: [Function: socketOnData],
        resume: [Function: onSocketResume],
        pause: [Function: onSocketPause] },
     _eventsCount: 10,
     _maxListeners: undefined,
     _writableState:
      WritableState {
        objectMode: false,
        highWaterMark: 16384,
        needDrain: false,
        ending: false,
        ended: false,
        finished: false,
        decodeStrings: false,
        defaultEncoding: 'utf8',
        length: 0,
        writing: false,
        corked: 0,
        sync: true,
        bufferProcessing: false,
        onwrite: [Function],
        writecb: null,
        writelen: 0,
        bufferedRequest: null,
        lastBufferedRequest: null,
        pendingcb: 0,
        prefinished: false,
        errorEmitted: false,
        bufferedRequestCount: 0,
        corkedRequestsFree: [Object] },
     writable: true,
     allowHalfOpen: true,
     destroyed: false,
     _bytesDispatched: 0,
     _sockname: null,
     _pendingData: null,
     _pendingEncoding: '',
     server:
      Server {
        domain: null,
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 1,
        _handle: [Object],
        _usingSlaves: false,
        _slaves: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        _pendingResponseData: 0,
        _connectionKey: '6::::7165' },
     _server:
      Server {
        domain: null,
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 1,
        _handle: [Object],
        _usingSlaves: false,
        _slaves: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        _pendingResponseData: 0,
        _connectionKey: '6::::7165' },
     _idleTimeout: 120000,
     _idleNext:
      Socket {
        connecting: false,
        _hadError: false,
        _handle: [Object],
        _parent: null,
        _host: null,
        _readableState: [Object],
        readable: true,
        domain: null,
        _events: [Object],
        _eventsCount: 10,
        _maxListeners: undefined,
        _writableState: [Object],
        writable: true,
        allowHalfOpen: true,
        destroyed: false,
        _bytesDispatched: 970,
        _sockname: null,
        _pendingData: null,
        _pendingEncoding: '',
        server: [Object],
        _server: [Object],
        _idleTimeout: 120000,
        _idleNext: [Object],
        _idlePrev: [Circular],
        _idleStart: 1410,
        parser: [Object],
        on: [Function: socketOnWrap],
        _paused: false,
        read: [Function],
        _consuming: true,
        _httpMessage: null,
        _peername: [Object] },
     _idlePrev:
      TimersList {
        _idleNext: [Circular],
        _idlePrev: [Object],
        _timer: [Object],
        _unrefed: true,
        msecs: 120000 },
     _idleStart: 39414,
     parser:
      HTTPParser {
        '0': [Function: parserOnHeaders],
        '1': [Function: parserOnHeadersComplete],
        '2': [Function: parserOnBody],
        '3': [Function: parserOnMessageComplete],
        '4': [Function: onParserExecute],
        _headers: [],
        _url: '',
        _consumed: true,
        socket: [Circular],
        incoming: [Circular],
        outgoing: null,
        maxHeaderPairs: 2000,
        onIncoming: [Function: parserOnIncoming] },
     on: [Function: socketOnWrap],
     _paused: false,
     read: [Function],
     _consuming: true,
     _httpMessage:
      ServerResponse {
        domain: null,
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        output: [],
        outputEncodings: [],
        outputCallbacks: [],
        outputSize: 0,
        writable: true,
        _last: false,
        chunkedEncoding: false,
        shouldKeepAlive: true,
        useChunkedEncodingByDefault: true,
        sendDate: true,
        _removedHeader: {},
        _contentLength: null,
        _hasBody: true,
        _trailer: '',
        finished: false,
        _headerSent: false,
        socket: [Circular],
        connection: [Circular],
        _header: null,
        _headers: [Object],
        _headerNames: [Object],
        _onPendingData: [Function: updateOutgoingData],
        req: [Circular],
        locals: {},
        __onFinished: [Object] },
     _peername: { address: '::1', family: 'IPv6', port: 35968 } },
  connection:
   Socket {
     connecting: false,
     _hadError: false,
     _handle:
      TCP {
        bytesRead: 657,
        _externalStream: {},
        fd: -1,
        reading: true,
        owner: [Circular],
        onread: [Function: onread],
        onconnection: null,
        writeQueueSize: 0 },
     _parent: null,
     _host: null,
     _readableState:
      ReadableState {
        objectMode: false,
        highWaterMark: 16384,
        buffer: [],
        length: 0,
        pipes: null,
        pipesCount: 0,
        flowing: true,
        ended: false,
        endEmitted: false,
        reading: true,
        sync: false,
        needReadable: true,
        emittedReadable: false,
        readableListening: false,
        resumeScheduled: false,
        defaultEncoding: 'utf8',
        ranOut: false,
        awaitDrain: 0,
        readingMore: false,
        decoder: null,
        encoding: null },
     readable: true,
     domain: null,
     _events:
      { end: [Object],
        finish: [Function: onSocketFinish],
        _socketEnd: [Function: onSocketEnd],
        drain: [Object],
        timeout: [Function],
        error: [Object],
        close: [Object],
        data: [Function: socketOnData],
        resume: [Function: onSocketResume],
        pause: [Function: onSocketPause] },
     _eventsCount: 10,
     _maxListeners: undefined,
     _writableState:
      WritableState {
        objectMode: false,
        highWaterMark: 16384,
        needDrain: false,
        ending: false,
        ended: false,
        finished: false,
        decodeStrings: false,
        defaultEncoding: 'utf8',
        length: 0,
        writing: false,
        corked: 0,
        sync: true,
        bufferProcessing: false,
        onwrite: [Function],
        writecb: null,
        writelen: 0,
        bufferedRequest: null,
        lastBufferedRequest: null,
        pendingcb: 0,
        prefinished: false,
        errorEmitted: false,
        bufferedRequestCount: 0,
        corkedRequestsFree: [Object] },
     writable: true,
     allowHalfOpen: true,
     destroyed: false,
     _bytesDispatched: 0,
     _sockname: null,
     _pendingData: null,
     _pendingEncoding: '',
     server:
      Server {
        domain: null,
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 1,
        _handle: [Object],
        _usingSlaves: false,
        _slaves: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        _pendingResponseData: 0,
        _connectionKey: '6::::7165' },
     _server:
      Server {
        domain: null,
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 1,
        _handle: [Object],
        _usingSlaves: false,
        _slaves: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        _pendingResponseData: 0,
        _connectionKey: '6::::7165' },
     _idleTimeout: 120000,
     _idleNext:
      Socket {
        connecting: false,
        _hadError: false,
        _handle: [Object],
        _parent: null,
        _host: null,
        _readableState: [Object],
        readable: true,
        domain: null,
        _events: [Object],
        _eventsCount: 10,
        _maxListeners: undefined,
        _writableState: [Object],
        writable: true,
        allowHalfOpen: true,
        destroyed: false,
        _bytesDispatched: 970,
        _sockname: null,
        _pendingData: null,
        _pendingEncoding: '',
        server: [Object],
        _server: [Object],
        _idleTimeout: 120000,
        _idleNext: [Object],
        _idlePrev: [Circular],
        _idleStart: 1410,
        parser: [Object],
        on: [Function: socketOnWrap],
        _paused: false,
        read: [Function],
        _consuming: true,
        _httpMessage: null,
        _peername: [Object] },
     _idlePrev:
      TimersList {
        _idleNext: [Circular],
        _idlePrev: [Object],
        _timer: [Object],
        _unrefed: true,
        msecs: 120000 },
     _idleStart: 39414,
     parser:
      HTTPParser {
        '0': [Function: parserOnHeaders],
        '1': [Function: parserOnHeadersComplete],
        '2': [Function: parserOnBody],
        '3': [Function: parserOnMessageComplete],
        '4': [Function: onParserExecute],
        _headers: [],
        _url: '',
        _consumed: true,
        socket: [Circular],
        incoming: [Circular],
        outgoing: null,
        maxHeaderPairs: 2000,
        onIncoming: [Function: parserOnIncoming] },
     on: [Function: socketOnWrap],
     _paused: false,
     read: [Function],
     _consuming: true,
     _httpMessage:
      ServerResponse {
        domain: null,
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        output: [],
        outputEncodings: [],
        outputCallbacks: [],
        outputSize: 0,
        writable: true,
        _last: false,
        chunkedEncoding: false,
        shouldKeepAlive: true,
        useChunkedEncodingByDefault: true,
        sendDate: true,
        _removedHeader: {},
        _contentLength: null,
        _hasBody: true,
        _trailer: '',
        finished: false,
        _headerSent: false,
        socket: [Circular],
        connection: [Circular],
        _header: null,
        _headers: [Object],
        _headerNames: [Object],
        _onPendingData: [Function: updateOutgoingData],
        req: [Circular],
        locals: {},
        __onFinished: [Object] },
     _peername: { address: '::1', family: 'IPv6', port: 35968 } },
  httpVersionMajor: 1,
  httpVersionMinor: 1,
  httpVersion: '1.1',
  complete: false,
  headers:
   { host: 'localhost:7165',
     connection: 'keep-alive',
     'content-length': '5965',
     origin: 'http://localhost:7165',
     'user-agent': 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 BIDUBrowser/8.4 Safari/537.36',
     'content-type': 'multipart/form-data; boundary=----WebKitFormBoundaryh3vMr8xU6xcwgZM7',
     accept: 'application/json',
     'cache-control': 'no-cache',
     'x-devtools-emulate-network-conditions-client-id': 'D0E6CC95-CE83-43E9-A023-5B4499CC6416',
     'x-requested-with': 'XMLHttpRequest',
     referer: 'http://localhost:7165/',
     'accept-encoding': 'gzip, deflate',
     'accept-language': 'zh-CN,zh;q=0.8',
     cookie: 'io=A78ouAVNfsNcebomAAAA',
     dnt: '1' },
  rawHeaders:
   [ 'Host',
     'localhost:7165',
     'Connection',
     'keep-alive',
     'Content-Length',
     '5965',
     'Origin',
     'http://localhost:7165',
     'User-Agent',
     'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 BIDUBrowser/8.4 Safari/537.36',
     'Content-Type',
     'multipart/form-data; boundary=----WebKitFormBoundaryh3vMr8xU6xcwgZM7',
     'Accept',
     'application/json',
     'Cache-Control',
     'no-cache',
     'X-DevTools-Emulate-Network-Conditions-Client-Id',
     'D0E6CC95-CE83-43E9-A023-5B4499CC6416',
     'X-Requested-With',
     'XMLHttpRequest',
     'Referer',
     'http://localhost:7165/',
     'Accept-Encoding',
     'gzip, deflate',
     'Accept-Language',
     'zh-CN,zh;q=0.8',
     'Cookie',
     'io=A78ouAVNfsNcebomAAAA',
     'DNT',
     '1' ],
  trailers: {},
  rawTrailers: [],
  upgrade: false,
  url: '/uimg',
  method: 'POST',
  statusCode: null,
  statusMessage: null,
  client:
   Socket {
     connecting: false,
     _hadError: false,
     _handle:
      TCP {
        bytesRead: 657,
        _externalStream: {},
        fd: -1,
        reading: true,
        owner: [Circular],
        onread: [Function: onread],
        onconnection: null,
        writeQueueSize: 0 },
     _parent: null,
     _host: null,
     _readableState:
      ReadableState {
        objectMode: false,
        highWaterMark: 16384,
        buffer: [],
        length: 0,
        pipes: null,
        pipesCount: 0,
        flowing: true,
        ended: false,
        endEmitted: false,
        reading: true,
        sync: false,
        needReadable: true,
        emittedReadable: false,
        readableListening: false,
        resumeScheduled: false,
        defaultEncoding: 'utf8',
        ranOut: false,
        awaitDrain: 0,
        readingMore: false,
        decoder: null,
        encoding: null },
     readable: true,
     domain: null,
     _events:
      { end: [Object],
        finish: [Function: onSocketFinish],
        _socketEnd: [Function: onSocketEnd],
        drain: [Object],
        timeout: [Function],
        error: [Object],
        close: [Object],
        data: [Function: socketOnData],
        resume: [Function: onSocketResume],
        pause: [Function: onSocketPause] },
     _eventsCount: 10,
     _maxListeners: undefined,
     _writableState:
      WritableState {
        objectMode: false,
        highWaterMark: 16384,
        needDrain: false,
        ending: false,
        ended: false,
        finished: false,
        decodeStrings: false,
        defaultEncoding: 'utf8',
        length: 0,
        writing: false,
        corked: 0,
        sync: true,
        bufferProcessing: false,
        onwrite: [Function],
        writecb: null,
        writelen: 0,
        bufferedRequest: null,
        lastBufferedRequest: null,
        pendingcb: 0,
        prefinished: false,
        errorEmitted: false,
        bufferedRequestCount: 0,
        corkedRequestsFree: [Object] },
     writable: true,
     allowHalfOpen: true,
     destroyed: false,
     _bytesDispatched: 0,
     _sockname: null,
     _pendingData: null,
     _pendingEncoding: '',
     server:
      Server {
        domain: null,
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 1,
        _handle: [Object],
        _usingSlaves: false,
        _slaves: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        _pendingResponseData: 0,
        _connectionKey: '6::::7165' },
     _server:
      Server {
        domain: null,
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        _connections: 1,
        _handle: [Object],
        _usingSlaves: false,
        _slaves: [],
        _unref: false,
        allowHalfOpen: true,
        pauseOnConnect: false,
        httpAllowHalfOpen: false,
        timeout: 120000,
        _pendingResponseData: 0,
        _connectionKey: '6::::7165' },
     _idleTimeout: 120000,
     _idleNext:
      Socket {
        connecting: false,
        _hadError: false,
        _handle: [Object],
        _parent: null,
        _host: null,
        _readableState: [Object],
        readable: true,
        domain: null,
        _events: [Object],
        _eventsCount: 10,
        _maxListeners: undefined,
        _writableState: [Object],
        writable: true,
        allowHalfOpen: true,
        destroyed: false,
        _bytesDispatched: 970,
        _sockname: null,
        _pendingData: null,
        _pendingEncoding: '',
        server: [Object],
        _server: [Object],
        _idleTimeout: 120000,
        _idleNext: [Object],
        _idlePrev: [Circular],
        _idleStart: 1410,
        parser: [Object],
        on: [Function: socketOnWrap],
        _paused: false,
        read: [Function],
        _consuming: true,
        _httpMessage: null,
        _peername: [Object] },
     _idlePrev:
      TimersList {
        _idleNext: [Circular],
        _idlePrev: [Object],
        _timer: [Object],
        _unrefed: true,
        msecs: 120000 },
     _idleStart: 39414,
     parser:
      HTTPParser {
        '0': [Function: parserOnHeaders],
        '1': [Function: parserOnHeadersComplete],
        '2': [Function: parserOnBody],
        '3': [Function: parserOnMessageComplete],
        '4': [Function: onParserExecute],
        _headers: [],
        _url: '',
        _consumed: true,
        socket: [Circular],
        incoming: [Circular],
        outgoing: null,
        maxHeaderPairs: 2000,
        onIncoming: [Function: parserOnIncoming] },
     on: [Function: socketOnWrap],
     _paused: false,
     read: [Function],
     _consuming: true,
     _httpMessage:
      ServerResponse {
        domain: null,
        _events: [Object],
        _eventsCount: 2,
        _maxListeners: undefined,
        output: [],
        outputEncodings: [],
        outputCallbacks: [],
        outputSize: 0,
        writable: true,
        _last: false,
        chunkedEncoding: false,
        shouldKeepAlive: true,
        useChunkedEncodingByDefault: true,
        sendDate: true,
        _removedHeader: {},
        _contentLength: null,
        _hasBody: true,
        _trailer: '',
        finished: false,
        _headerSent: false,
        socket: [Circular],
        connection: [Circular],
        _header: null,
        _headers: [Object],
        _headerNames: [Object],
        _onPendingData: [Function: updateOutgoingData],
        req: [Circular],
        locals: {},
        __onFinished: [Object] },
     _peername: { address: '::1', family: 'IPv6', port: 35968 } },
  _consuming: false,
  _dumped: false,
  next: [Function: next],
  baseUrl: '',
  originalUrl: '/uimg',
  _parsedUrl:
   Url {
     protocol: null,
     slashes: null,
     auth: null,
     host: null,
     port: null,
     hostname: null,
     hash: null,
     search: null,
     query: null,
     pathname: '/uimg',
     path: '/uimg',
     href: '/uimg',
     _raw: '/uimg' },
  params: {},
  query: {},
  res:
   ServerResponse {
     domain: null,
     _events: { finish: [Object], end: [Function: onevent] },
     _eventsCount: 2,
     _maxListeners: undefined,
     output: [],
     outputEncodings: [],
     outputCallbacks: [],
     outputSize: 0,
     writable: true,
     _last: false,
     chunkedEncoding: false,
     shouldKeepAlive: true,
     useChunkedEncodingByDefault: true,
     sendDate: true,
     _removedHeader: {},
     _contentLength: null,
     _hasBody: true,
     _trailer: '',
     finished: false,
     _headerSent: false,
     socket:
      Socket {
        connecting: false,
        _hadError: false,
        _handle: [Object],
        _parent: null,
        _host: null,
        _readableState: [Object],
        readable: true,
        domain: null,
        _events: [Object],
        _eventsCount: 10,
        _maxListeners: undefined,
        _writableState: [Object],
        writable: true,
        allowHalfOpen: true,
        destroyed: false,
        _bytesDispatched: 0,
        _sockname: null,
        _pendingData: null,
        _pendingEncoding: '',
        server: [Object],
        _server: [Object],
        _idleTimeout: 120000,
        _idleNext: [Object],
        _idlePrev: [Object],
        _idleStart: 39414,
        parser: [Object],
        on: [Function: socketOnWrap],
        _paused: false,
        read: [Function],
        _consuming: true,
        _httpMessage: [Circular],
        _peername: [Object] },
     connection:
      Socket {
        connecting: false,
        _hadError: false,
        _handle: [Object],
        _parent: null,
        _host: null,
        _readableState: [Object],
        readable: true,
        domain: null,
        _events: [Object],
        _eventsCount: 10,
        _maxListeners: undefined,
        _writableState: [Object],
        writable: true,
        allowHalfOpen: true,
        destroyed: false,
        _bytesDispatched: 0,
        _sockname: null,
        _pendingData: null,
        _pendingEncoding: '',
        server: [Object],
        _server: [Object],
        _idleTimeout: 120000,
        _idleNext: [Object],
        _idlePrev: [Object],
        _idleStart: 39414,
        parser: [Object],
        on: [Function: socketOnWrap],
        _paused: false,
        read: [Function],
        _consuming: true,
        _httpMessage: [Circular],
        _peername: [Object] },
     _header: null,
     _headers: { 'x-powered-by': 'Express' },
     _headerNames: { 'x-powered-by': 'X-Powered-By' },
     _onPendingData: [Function: updateOutgoingData],
     req: [Circular],
     locals: {},
     __onFinished: { [Function: listener] queue: [Object] } },
  _startAt: [ 201604, 198825086 ],
  _startTime: 2016-12-26T01:49:42.018Z,
  _remoteAddress: '::1',
  body: {},
  secret: undefined,
  cookies: { io: 'A78ouAVNfsNcebomAAAA' },
  signedCookies: {},
  route: Route { path: '/uimg', stack: [ [Object] ], methods: { post: true } } }
POST /uimg 200 84.536 ms - 9

图片上传逻辑

uploadImg.prototype.uploadFiles = function(files) {
        var self = this;
        for (var i = 0; i < files.length; i++) {

            var file = files[i];
            console.log(file);

            totalSteps = Math.round(Math.min(maxSteps, Math.max(minSteps, file.size / bytesPerStep)));

            for (var step = 0; step < totalSteps; step++) {
                var duration = timeBetweenSteps * (step + 1);
                setTimeout(function(file, totalSteps, step) {
                    return function() {
                        file.upload = {
                            progress: 100 * (step + 1) / totalSteps,
                            total: file.size,
                            bytesSent: (step + 1) * file.size / totalSteps
                        };

                        self.emit('uploadprogress', file, file.upload.progress, file.upload.bytesSent);
                        if (file.upload.progress == 100) {
                            file.status = Dropzone.SUCCESS;
                            self.emit("success", file, 'success', null);
                            self.emit("complete", file);
                            self.processQueue();
                        }
                    };
                }(file, totalSteps, step), duration);
            }
        }
    }

理论上应该能收到下面这样一个对象的，现在看上去应该是没有

{
  displayImage: {
    size: 11885,
    path: '/tmp/1574bb60b4f7e0211fd9ab48f932f3ab',
    name: 'avatar.png',
    type: 'image/png',
    lastModifiedDate: Sun, 05 Feb 2016 05:31:09 GMT,
    _writeStream: {
      path: '/tmp/1574bb60b4f7e0211fd9ab48f932f3ab',
      fd: 14,
      writable: false,
      flags: 'w',
      encoding: 'binary',
      mode: 438,
      bytesWritten: 11885,
      busy: false,
      _queue: [],
      drainable: true
    },
    length: [Getter],
    filename: [Getter],
    mime: [Getter]
  }
}

Answer 1

至少，应该贴一下你的node的代码啊。。。

我觉得你可能需要 formidable 这个库
https://github.com/felixge/no...

var formidable = require('formidable'),
    http = require('http'),
    util = require('util');

http.createServer(function(req, res) {
  if (req.url == '/upload' && req.method.toLowerCase() == 'post') {
    // parse a file upload
    var form = new formidable.IncomingForm();

    form.parse(req, function(err, fields, files) {
      res.writeHead(200, {'content-type': 'text/plain'});
      res.write('received upload:\n\n');
      res.end(util.inspect({fields: fields, files: files}));
    });

    return;
  }

  // show a file upload form
  res.writeHead(200, {'content-type': 'text/html'});
  res.end(
    '<form action="/upload" enctype="multipart/form-data" method="post">'+
    '<input type="text" name="title"><br>'+
    '<input type="file" name="upload" multiple="multiple"><br>'+
    '<input type="submit" value="Upload">'+
    '</form>'
  );
}).listen(8080);

Answer 2

我也是formidable弄的上传

Answer 3

使用formidable

// 需要本地安装 formidable ，参见 https://github.com/felixge/node-formidable
var formidable = require('formidable');
var http = require('http');
var fs = require('fs');
var url = require('url');
var path = require('path');

// 文件将要上传到哪个文件夹下面
var uploadfoldername = 'uploadfiles';
var uploadfolderpath = path.join(__dirname, uploadfoldername);

// var server = '192.168.1.5';
// var server = '172.22.145.3';
var server = 'localhost';
var port = 8011;

http.createServer(function (req, res) {

    console.log('路由 ' + req.url);

    // ----------------------用 '/upload' 这个路由来处理文件上传----------------------
    if (req.url === '/upload' && req.method.toLowerCase() === 'post') {
        console.log('定位到 /upload 路由');

        // 使用第三方的 formidable 插件初始化一个 form 对象
        var form = new formidable.IncomingForm();

        // 处理 request
        form.parse(req, function (err, fields, files) {
            if (err) {
                return console.log('formidable, form.parse err');
            }

            console.log('formidable, form.parse ok');

            // 显示参数，例如 token
            console.log('显示上传时的参数 begin');
            console.log(fields);
            console.log('显示上传时的参数 end');

            var item;

            // 计算 files 长度
            var length = 0;
            for (item in files) {
                length++;
            }
            if (length === 0) {
                console.log('files no data');
                return;
            }

            for (item in files) {
                var file = files[item];
                // formidable 会将上传的文件存储为一个临时文件，现在获取这个文件的目录
                var tempfilepath = file.path;
                // 获取文件类型
                var type = file.type;

                // 获取文件名，并根据文件名获取扩展名
                var filename = file.name;
                var extname = filename.lastIndexOf('.') >= 0
                                ? filename.slice(filename.lastIndexOf('.') - filename.length)
                                : '';
                // 文件名没有扩展名时候，则从文件类型中取扩展名
                if (extname === '' && type.indexOf('/') >= 0) {
                    extname = '.' + type.split('/')[1];
                }
                // 将文件名重新赋值为一个随机数（避免文件重名）
                filename = Math.random().toString().slice(2) + extname;

                // 构建将要存储的文件的路径
                var filenewpath = path.join(uploadfolderpath, filename);

                // 将临时文件保存为正式的文件
                fs.rename(tempfilepath, filenewpath, function (err) {
                    // 存储结果
                    var result = '';

                    if (err) {
                        // 发生错误
                        console.log('fs.rename err');
                        result = 'error|save error';
                    } else {
                        // 保存成功
                        console.log('fs.rename done');
                        // 拼接图片url地址
                        result = 'http://' + server + ':' + port + '/' + uploadfoldername + '/' + filename;
                    }
                    
                    // 返回结果
                    res.writeHead(200, {
                        'Content-type': 'text/html'
                    });
                    res.end(result);
                }); // fs.rename
            } // for in 
        });
    }

}).listen(port);