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 + "\n")
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