本文實(shí)例講述了Node.js文本提交與顯示方法。分享給大家供大家參考，具體如下：
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;server.start(router.route, handle);server.js
var http = require("http");var url = require("url");function start(route, handle) { function onRequest(request, response) { var postData = ""; var pathname = url.parse(request.url).pathname; console.log("Request for " + pathname + " received."); request.setEncoding("utf8"); request.addListener("data", function(postDataChunk) { postData += postDataChunk; console.log("Received POST data chunk '"+ postDataChunk + "'."); }); request.addListener("end", function() { console.log("data received ending" + pathname); route(handle, pathname, response, postData); }); } http.createServer(onRequest).listen(8888); console.log("Server has started.");}exports.start = start;requestHandlers.js
var querystring = require("querystring");function start(response, postData) { 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" method="post">'+ '<textarea name="text" rows="20" cols="60"></textarea>'+ '<input type="submit" value="Submit text" />'+ '</form>'+ '</body>'+ '</html>'; response.writeHead(200, {"Content-Type": "text/html"}); response.write(body); response.end();}function upload(response, postData) { console.log("Request handler 'upload' was called."); response.writeHead(200, {"Content-Type": "text/plain"}); response.write("You've sent the text: "+ querystring.parse(postData).text); response.end();}exports.start = start;exports.upload = upload;router.js
function route(handle, pathname, response, postData) { console.log("About to route a request for " + pathname); if (typeof handle[pathname] === 'function') { handle[pathname](response, postData); } 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;result:
知識點(diǎn)：
require和exports的用法：
index.js中代碼
var Hello = require('.hello');hello = new Hello();hello.setName('Joey');hello.sayHello();hello.js中代碼
function Hello(){ var name; this.setName = function(thyName){ name = thyName; } this.sayHello = function(){ console.log('Hello ' + name); }}//exports.Hello = Hello; //此時(shí)我們在其他文件中需要通過 require('./hello').Hello來獲取Hello對象，這種寫法有點(diǎn)冗余module.exports = Hello; //輸出的就是Hello對象本身，不是上面的exports，上面的是暴露.Hello，.Hello賦予了Hello對象希望本文所述對大家nodejs程序設(shè)計(jì)有所幫助。
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