nodejs模拟http-post文件的方法示例

var fs = require("fs");

var http = require('http');



function PostFileToServer(sFileName, data, callback) {

    var boundary = "NODEJSPOSTFILE-" + (Math.random() * 9007199254740992).toString(36);



    var sHeader = "--" + boundary + "\r\n";

    sHeader += "Content-Disposition: form-data; name=\"fileName\"; filename=\"" + sFileName + "\"\r\n";

    sHeader += "Content-Type: application/octet-stream\r\n\r\n";



    var sEndData = "\r\n--" + boundary + "--\r\n\r\n";



    var options = {

        hostname: "127.0.0.1",

        port    : 3031,

        path    : "/cgi-bin/upload?action=uploadFile&newname=my.jpg",

        method  : 'POST'

    };



    var httpreq = http.request(options, function (httpres) {

        httpres.on('data', function (dataResponse) {

            var response = JSON.parse(dataResponse);

            console.log(response.md5);

            console.log(response.name);

        });

    });

    httpreq.setHeader('Content-Type',   'multipart/form-data; boundary=' + boundary + '');

    httpreq.setHeader('Content-Length', Buffer.byteLength(sHeader) + data.length + Buffer.byteLength(sEndData));



    httpreq.on('error', function(e) {

        console.log('problem with request: ' + e.message);

        callback(e);

        return;

    });



    httpreq.write(sHeader);

    httpreq.write(data);

    httpreq.write(sEndData);

    httpreq.end();

}



fs.readFile('1.jpg', function (err, data) {

    if (err) throw err;

    console.log(data.length);

  

    PostFileToServer("1.jpg", data, function(){

        console.log("call back");    

    });

});

{ 

    fileName:

    { 

        domain: null,

        _events: {},

        _maxListeners: undefined,

        size: 595284,

        path: 'tmp\\upload_ba227eaf1015fda43ea4a218b2161748',

        name: '1.jpg',

        type: 'application/octet-stream',

        hash: null,

        lastModifiedDate: Sun Mar 08 2015 14:34:18 GMT+0800 (中国标准时间),

        _writeStream:

        { 

            _writableState: [Object],

            writable: true,

            domain: null,

            _events: {},

            _maxListeners: undefined,

            path: 'tmp\\upload_ba227eaf1015fda43ea4a218b2161748',

            fd: null,

            flags: 'w',

            mode: 438,

            start: undefined,

            pos: undefined,

            bytesWritten: 595284,

            closed: true 

        } 

    } 

}