本文实例讲述了Node.js文本提交与显示方法。分享给大家供大家参考，具体如下：
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:
知识点：
require和exports的用法：
index.js中代码
var Hello = require('.hello');
hello = new Hello();
hello.setName('Joey');
hello.sayHello();
hello.js中代码
function Hello(){
var name;
this.setName = function(thyName){
name = thyName;
}
this.sayHello = function(){
console.log('Hello ' name);
}
}
//exports.Hello = Hello; //此时我们在其他文件中需要通过 require('./hello').Hello来获取Hello对象，这种写法有点冗余
module.exports = Hello; //输出的就是Hello对象本身，不是上面的exports，上面的是暴露.Hello，.Hello赋予了Hello对象
希望本文所述对大家nodejs程序设计有所帮助。