以前项目里有这个方法，最近在客户那里出问题了，同事说，这个方法从来就没管用过，SO，用了一天时间把这个方法给搞出来了（觉得花费的时间长了点），分享之。
代码及测试用例：
var http = require('http');
var path = require('path');
var fs = require('fs');
function postFile(fileKeyValue, req) {
var boundaryKey = Math.random().toString(16);
var enddata = '\r\n----' + boundaryKey + '--';
var files = new Array();
for (var i = 0; i < fileKeyValue.length; i++) {
var content = "\r\n----" + boundaryKey + "\r\n" + "Content-Type: application/octet-stream\r\n" + "Content-Disposition: form-data; name=\"" + fileKeyValue[i].urlKey + "\"; filename=\"" + path.basename(fileKeyValue[i].urlValue) + "\"\r\n" + "Content-Transfer-Encoding: binary\r\n\r\n";
var contentBinary = new Buffer(content, 'utf-8');//当编码为ascii时，中文会乱码。
files.push({contentBinary: contentBinary, filePath: fileKeyValue[i].urlValue});
}
var contentLength = 0;
for (var i = 0; i < files.length; i++) {
var stat = fs.statSync(files[i].filePath);
contentLength += files[i].contentBinary.length;
contentLength += stat.size;
}
req.setHeader('Content-Type', 'multipart/form-data; boundary=--' + boundaryKey);
req.setHeader('Content-Length', contentLength + Buffer.byteLength(enddata));
// 将参数发出
var fileindex = 0;
var doOneFile = function(){
req.write(files[fileindex].contentBinary);
var fileStream = fs.createReadStream(files[fileindex].filePath, {bufferSize : 4 * 1024});
fileStream.pipe(req, {end: false});
fileStream.on('end', function() {
fileindex++;
if(fileindex == files.length){
req.end(enddata);
} else {
doOneFile();
}
});
};
if(fileindex == files.length){
req.end(enddata);
} else {
doOneFile();
}
}
//测试用例
//http://nodejs.org/api/http.html#http_http_request_options_callback
var files = [
{urlKey: "file1", urlValue: "E:\\DFBF.jpg"},
{urlKey: "file2", urlValue: "E:\\1.jpg"},
{urlKey: "file3", urlValue: "E:\\Pro 空格 中文.mp3"}
]
var options = {
host: "localhost",
port: "8908" ,
method: "POST",
path: "/Home/Upload"
}
var req = http.request(options, function(res){
console.log("RES:" + res);
console.log('STATUS: ' + res.statusCode);
console.log('HEADERS: ' + JSON.stringify(res.headers));
//res.setEncoding("utf8");
res.on("data", function(chunk){
console.log("BODY:" + chunk);
})
})
req.on('error', function(e){
console.log('problem with request:' + e.message);
console.log(e);
})
postFile(files, req);
console.log("done");
服务端测试，用mvc在home控制器写了个upload方法，并遍历上传的文件将其保存在硬盘上了。
只是上传大文件会有问题，估计是需要服务器进行配置，暂且不管。
服务端方法（写在了Home控制器下）
[HttpPost]
public string Upload()
{
//HttpPostedFileBase file = this.Request.Files["file"];
//file.SaveAs(file.FileName);
foreach (string file in this.Request.Files)
{
this.Request.Files[file].SaveAs(@"E:\新建文件夹\" + this.Request.Files[file].FileName);
}
return @"保存成功 路径：E:\新建文件夹\";
}
运行脚本：
node nodejsPostFile.js
运行结果：
