Nodejs Simple http File upload Demo

Last Update:2014-07-18 Source: Internet

Author: User

Tags http file upload

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//This is a simple node HTTP that can handle the files of the current directory//and can be used to implement a special URL for testing//connect this server with http://localhost:8000 or http://127.0.0.1:8000//First, load all the modules you want to usevarHTTP = require (' http ');//HTTP Server APIvarFS = require (' FS ');//File System APIvarServer =Newhttp. Server ();//Create a new HTTP servervarPort = 8000; Server.listen (port); //run it on port 8000 hurtvarLog = require (' Util '). Log;log (' Http Server is listening ' + port + ' port '.);//node registers an event handler with the ' on ' method//when the server receives a new request, it runs the function to handle itServer.on (' request ',function(Request, response) {varfilename =NULL; //URL to parse request    varurl = require (' URL ')). Parse (Request.url); Switch(url.pathname) { Case'/upload ':        var_filename = request.headers[' File-name '];        Log (_filename); Request.once (' Data ',function(data) {//Large File//var fis = fs.createwritestream ('/txt.txt ');//fis.write (data);//fis.end ();Fs.writefile (_filename, data);        Response.End ();        });  Break;  Case'/' | | '/index.html ': FileName= ' index.html '; default: FileName= FileName | | Url.pathname.substring (1);//Remove the leading '/'        //speculate on content types based on their extension        varType = (function(_type) {Switch(_type) {//Extended Name             Case' HTML ':             Case' htm ':return' Text/html; Charset=utf-8 ';  Case' JS ':return' Application/javascript; Charset=utf-8 ';  Case' CSS ':return' Text/css; Charset=utf-8 ';  Case' TXT ':return' Text/plain; Charset=utf-8 ';  Case' Manifest ':return' Text/cache-manifest; Charset=utf-8 '; default:return' Application/octet-stream '; }} (Filename.substring (Filename.lastindexof (‘.‘) + 1))); //asynchronously reads the file and passes the content back to the callback function as a separate block of data        //for really large files, using API Fs.createreadstream () is betterFs.readfile (filename,function(err, content) {if(ERR) {//If the file cannot be read for some reasonResponse.writehead (404, {' Content-type ': ' Text/plain; Charset=utf-8 ')});            Response.Write (Err.message); } Else{//otherwise the read file succeedsResponse.writehead ($, {' Content-type '): type}); Response.Write (content); //the content of the file as the response body} response.end ();            }); }});

Index.html

<HTML><Head><title>File test</title><Script>window.onload=function(){    varFiles=document.getElementsByTagName ('input'), Len=files.length, file;  for (varI= 0; I<Len; I++) {file=Files[i]; if(File.type!== 'file') Continue; //A control that is not a file type skipsFile.onchange= function() {            var_files=  This. Files; if (!_files.length)return; if(_files.length=== 1) { //Select a single file                varXHR= NewXMLHttpRequest (); Xhr.open ('POST', 'Http://localhost:8000/upload'); varFilePath=files[0].value; Xhr.setrequestheader ('File-name', Filepath.substring (Filepath.lastindexof ('\\') + 1)); Xhr.send (_files[0]); } Else { }        }; }};</Script></Head><Body>    <inputtype= "File" /></Body></HTML>

Visit http://localhost:8000/

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