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Service Modules
var http = require ("http");
var url = require ("url");
function Start (route,handle) {
function ONrequest (request,response) {
var pathname = Url.parse (request.url). Pathname;
if (pathname! = "/favicon.ico") {
Console.log ("Request for" + pathname + "received");
Route (handle,pathname,response,request);
}
}
http.createserver (onrequest). Listen (8888);
Console.log ("Server has started");
}
Exports.start = start;
Routing module
Function route (handle,pathname,response,request) {
Console.log ("about-route a request for" +pathname);
if (typeof handle[pathname] = = = ' function ') {
Handle[pathname] (response,request);
}else{
Console.log ("No request handler found for" + pathname);
response.writehead (404,{"Content-type": "Text/plain"});
Response.Write ("404 Not Found");
Response.End ();
}
}
Exports.route = route;
Request Processing Module
var querystring = require ("querystring"),
FS = require ("FS"),
Formidable = require ("formidable");
function Start (response) {
Console.log ("Request handler ' start ' was called.");
var body = '
'
' <meta http-equiv= ' Content-type "content=" text/html; ' +
' Charset=utf-8 '/> ' +
'
' <body> ' +
' <form action= '/upload "enctype=" multipart/form-data "' +
' method= ' post > ' +
' <input type= ' file ' name= ' upload ' multiple= ' multiple ' > ' +
' <input type= ' submit ' value= ' Upload file '/> ' +
' </form> ' +
' </body> ' +
'
Response.writehead ($, {"Content-type": "Text/html"});
Response.Write (body);
Response.End ();
}
function upload (response, request) {
Console.log ("Request handler ' upload ' was called.");
var form = new Formidable. Incomingform ();
Console.log ("About to parse");
Form.parse (Request, function (Error, fields, files) {
Console.log ("parsing done");
var readstream = Fs.createreadstream (Files.upload.path);
var writestream=fs.createwritestream ("./tmp/test.png");
Readstream.pipe (Writestream);
Readstream.on (' End ', function () {
Fs.unlinksync (Files.upload.path);
});
Response.writehead ($, {"Content-type": "Text/html"});
Response.Write ("received image:<br/>");
Response.Write ("
Response.End ();
});
}
Function Show (response) {
Console.log ("Request handler ' show ' was called.");
Fs.readfile ("./tmp/test.png", "Binary", function (error, file) {
if (Error) {
Response.writehead ($, {"Content-type": "Text/plain"});
Response.Write (Error + "\ n");
Response.End ();
} else {
Response.writehead ($, {"Content-type": "Image/png"});
Response.Write (File, "binary");
Response.End ();
}
});
}
Exports.start = start;
Exports.upload = upload;
Exports.show = Show;
Index.js
var server = require ("./server");
var router = require ("./route");
var requesthandlers = require ("./requesthandlers");
var handle = {};
handle["/"] = Requesthandlers.start;
handle["/start"] = Requesthandlers.start;
handle["/upload"] = requesthandlers.upload;
handle["/show"] = requesthandlers.show;
Server.start (Router.route,handle);
Visit: Http://localhost:8888/start
This article is from the "Yan" blog, please be sure to keep this source http://suyanzhu.blog.51cto.com/8050189/1894091
Nodejs upload images and show
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