nodejs --- formidable模块 , post 上传.

1. 只有一个文件域:

 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="file" name="upload" multiple="multiple"><br>'+
     '<input type="submit" value="Upload">'+
     '</form>'
   );
 }).listen(8888);

2. 多文件上传:

不可以,最后一个选择的覆盖住了之前的.

3. 两个不同的文件域:

 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="file" name="upload01" ><br>'+
     '<input type="file" name="upload02"><br>'+
     '<input type="submit" value="Upload">'+
     '</form>'
   );
 }).listen(8888);

4. 除去文件域 , 有其他的 字段.

 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="userName" ><br>'+
     '<input type="password" name="password" ><br>'+
     '<input type="file" name="upload01" ><br>'+
     '<input type="file" name="upload02"><br>'+
     '<input type="submit" value="Upload">'+
     '</form>'
   );
 }).listen(8888);