node.js-----处理POST请求
简单的demo,post数据，并且接受数据
requestHandlers的模块
start() : POSt表单HTML
upload : POST数据获取页面
-----requestHandlers.js
-----router.js
-----server.js
-----index.js
requestHandlers.js
/*简但的demo POST数据，并接受数据*/
/*requestHandlers.js模块*/
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/html"});
response.write("you've sent" + postData);
response.end();
}
exports.start = start;
exports.upload = upload;
router.js
/*routers.js 模块*/
/*通过检查给定的路径对应的请求处理程序是否存在，如果存在的话直接调用相应的函数，并返回相应是字符串*/
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 for " + pathname);
response.writeHead(404,{"Content-Type":"text/html"});
response.write("404 Not found");
response.end();
}
}
exports.route = route;
server.js
/*server模块*/
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(){
route(handle, pathname, response, postData);
});
}
http.createServer(onRequest).listen(3000);
console.log("Server has started");
}
exports.start = start;
index.js
/*index模块*/
var server = require("./server");
var router = require("./router");
var requestHandlers = require("./requestHandlers");
var handle = {}
//区分大小写的
handle["/"] = requestHandlers.start;
handle["/start"] = requestHandlers.start;
handle["/upload"] = requestHandlers.upload;
server.start(router.route, handle);
命令行启动应用：
node index.js
浏览器输入：
http://127.0.0.1:3000/
命令行显示：
浏览器显示：
submit之后命令行显示：此时URL改变，调用/upload的处理程序。
命令行显示:
浏览器显示：response对象的返回显示给用户的数据：
