GET、POSTリクエストパラメータの取得
概要
GETパラメータはurlのqueryより取得し、POSTパラメータはrequest.addListenerを用意して取得する
しかし、"["などのものは変換されてくるので別の方法で取得する方がよい。
サンプル
index.js
// サーバ、ルーティング、リクエストメソッドのモジュールを読み込み
var server = require("./server");
var router = require("./router");
var request = require("./request");
var requestHandlers = require("./requestHandlers");
// リクエストのハンドラを設定
var handle = {}
handle["/"] = requestHandlers.start;
handle["/start"] = requestHandlers.start;
handle["/upload"] = requestHandlers.upload;
// ハンドラパラメータを追加
server.start(router.route, handle, request);
server.js
var http = require("http");
var url = require("url");
var util = require('util');
function start(route, handle, param) {
function onRequest(request, response) {
var pathname = url.parse(request.url).pathname;
var query = url.parse(request.url).query;
// GETリクエストを取得
var _p = "";
if (query != undefined) {
_p = query + "&";
}
// POSTリクエスト取得
request.setEncoding("utf8");
request.addListener("data", function(postDataChunk) {
_p += postDataChunk;
console.log("Received POST data chunk '" + postDataChunk + "'.");
});
request.addListener("end", function() {
// リクエストパラメータ取得
var _req_data = param.req_data(_p);
console.log("Request for " + pathname + " received.");
console.log("Request for RequestString = " + _p + " received.");
console.log(util.inspect(_req_data, false, null));
console.log("");
// ルーティング
route(handle, pathname, response, _req_data);
});
}
http.createServer(onRequest).listen(8888);
console.log("Server has started.");
}
exports.start = start;
router.js
function route(handle, pathname, response, _req_data) {
console.log("About to route a request for " + pathname);
if (typeof handle[pathname] === 'function') {
handle[pathname](response, _req_data);
} 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;
requestHandlers.js
var exec = require("child_process").exec;
function start(response, _req_data) {
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?zzz=111&xxx=666" method="post">'+
'<input type="text" name="text1" />'+
'<input type="text" name="text2" />'+
'<input type="text" name="text3[aaa]" />'+
'<input type="text" name="text3[bbb]" />'+
'<input type="checkbox" name="text4" checked/>'+
'<input type="submit" value="Submit text" />'+
'</form>'+
'</body>'+
'</html>';
response.writeHead(200, {"Content-Type": "text/html"});
response.write(body);
response.end();
}
function upload(response, _req_data) {
console.log("Request handler 'upload' was called.");
response.writeHead(200, {"Content-Type": "text/plain"});
response.write("Hello Upload");
response.write("aaa=" + _req_data['text1']);
response.end();
}
exports.start = start;
exports.upload = upload;
request.js
function req_data(queryString) {
var _param = {};
// リクエストを取得
var _list = (new String(queryString)).split('&');
for(var _key in _list){
var _col = _list[_key].split("=");
_param[_col[0]] = _col[1];
}
return _param;
}
exports.req_data = req_data;
結果
コマンド
D:\Tools\Works\nodejs_test\sample09>node index.js
Server has started.
Request for /start received.
Request for RequestString = aaa=111&b=444& received.
{ aaa: '111', b: '444', '': undefined }
About to route a request for /start
Request handler 'start' was called.
Request for /favicon.ico received.
Request for RequestString = received.
{ '': undefined }
About to route a request for /favicon.ico
No request handler found for /favicon.ico
Received POST data chunk 'text1=111&text2=222&text3%5Baaa%5D=333&text3%5Bbbb%5D=444&text4=on'.
Request for /upload received.
Request for RequestString = zzz=111&xxx=666&text1=111&text2=222&text3%5Baaa%5D=333&text3%5Bbbb%5D=444&text4=on received.
{ zzz: '111',
xxx: '666',
text1: '111',
text2: '222',
'text3%5Baaa%5D': '333',
'text3%5Bbbb%5D': '444',
text4: 'on' }
About to route a request for /upload
Request handler 'upload' was called.
Request for /favicon.ico received.
Request for RequestString = received.
{ '': undefined }
About to route a request for /favicon.ico
No request handler found for /favicon.ico
画面
GETパラメータを指定して表示
POSTデータを設定
一部のPOSTデータを画面に表示
最終更新：2013年03月27日 21:55
