Node入门 √
http://www.nodebeginner.org/index-zh-cn.html
Node.js中所用的fs.renameSync出错：Error: EXDEV, cross-device link not permitted √
http://www.crifan.com/node_js_use_fs_renamesync_error_exdev_cross_device_link_not_permitted/
index.js
var server = require("./server") var router = require("./router") 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)
server.js
var http = require("http") var url = require("url") function start(route, handle) { function onRequest(request, response) { var pathname = url.parse(request.url).pathname console.log("Request for " + pathname + " received.") route(handle, pathname, response, request) } http.createServer(onRequest).listen(8888) console.log("Server has started.") } exports.start = start
router.js
function route(handle, pathname, response, request) { console.log("About to 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/html"}) response.write("404 Not found") response.end() } } exports.route = route
requestHandlers.js
var querystring = require("querystring") var fs = require("fs") var util = require('util') var formidable = require("formidable") function start(response) { console.log("Request handler 'start' was called.") var body = '<html>' + '<head>' + '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">' + '</head>' + '<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>' + '</html>' response.writeHead(200, {"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") util.pump(readStream, writeStream, function() { fs.unlinkSync(files.upload.path) }); response.writeHead(200, {"Content-Type": "text/html"}) response.write("received image:<br/>") response.write("<img src='/show' />") 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(500, {"Content-Type": "text/plain"}) response.write(error + " ") response.end() } else { response.writeHead(200, {"Content-Type": "image/png"}) response.write(file, "binary") response.end() } }); } exports.start = start exports.upload = upload exports.show = show