Node开发入门

本文涉及四个文件：

  • index.js                   调度和设置
  • requestHandlers　  页面输出
  • server.js                  服务器启动
  • router.js                  路由逻辑

 

index.js

//index.js(设置路由并调用server启动服务器)
var server = require("./server"), 
    router = require("./router"), 
    requestHandlers = require("./requestHandlers");
var handle = {};
handle["/"] = requestHandlers.start;
handle["/start"] = requestHandlers.start;
handle["/sb"] = requestHandlers.sb;
server.start(router.route, handle);

requestHandlers.js

//requestHandlers.js(页面函数)
var querystring = require("querystring");

function start(response) {
    var body = '<html>' +
        '<head>' +
        '<meta http-equiv="Content-Type" content="text/html; ' +
        'charset=UTF-8" />' +
        '</head>' +
        '<body>' +
        '<form action="/sb" method="post">' +
        '<input type="text" name="text"/>' +
        '<input type="submit" value="Submit text" />' +
        '</form>' +
        '</body>' +
        '</html>';

    response.writeHead(200, { "Content-Type": "text/html" });
    response.write(body);
    response.end();
}

function sb(response, postData) {
    response.writeHead(200, { "Content-Type": "text/plain" });
    response.write(querystring.parse(postData).text);
    response.end();
}

exports.start = start;
exports.sb = sb;

router.js

//router.js(路由逻辑)
function route(handle, pathname, response, postData) {
    console.log("来自" + pathname+"的请求");

    if (typeof handle[pathname] === "function") {
        handle[pathname](response, postData);
    } else {
        console.log("未发现来自" + pathname+"的请求");
        response.writeHead(404, { "Content-Type": "text/plain" });
        response.write("404 Not found");
        response.end();
    }
};

exports.route = route;

server.js

//server.js(服务器启动函数)
var http = require("http"), url = require("url");

function start(route, handle) {
    function onRequest(request, response) {
        var postData = "";
        var pathname = url.parse(request.url).pathname;
        console.log("来自" + pathname + "的请求已接收");

        request.setEncoding("utf8");
        request.addListener("data", function (postDataChunk) {
            postData += postDataChunk;
        });

        request.addListener("end", function () {
            route(handle, pathname, response, postData);
        })
    }
    http.createServer(onRequest).listen(3000);
    console.log("服务器已启动");
}

exports.start = start;

 

posted @ 2015-08-19 14:06  boystar  阅读(243)  评论(0)  编辑  收藏  举报