nodejs的get与post

index.html

<html>
    <body>
        <form action="/api/v1/records" method="post">
        name: <input type="text" name="name">
        age: <input type="text" name="age" >
        <input type="submit" value="submit">
        </form>
    </body>
</html>

app.js

var server = require('./server');
var router = require('./router');

var handler = require('./handler');

var handle = {};
handle['/'] = handler.home;
handle['/home'] = handler.home;
handle['/review'] = handler.review;
handle['/api/v1/records'] = handler.api_records;

server.startServer(router.route,handle);

server.js

var http = require('http');
var fs = require('fs');
var url = require('url');
var querystring = require('querystring');

function startServer (route,handle) {
    var onRequest = function(request, response) {
        //解析取得？之前的路由
        var pathname = url.parse(request.url).pathname;
        var data = [];
        request.on('error', function (err) {
            console.error(err);
        }).on('data', function(chunk) {
            data.push(chunk);
        }).on('end', function() {
            if (request.method === 'post') {
                //当post的数据过大时，选择主动销毁
                if (data.length > 1e6) {
                    request.connection.destroy();
                }
                data = Buffer.concat(data).toString();
                route(handle, pathname, response, querystring.parse(data));
            } else {
                //解析取得？之后的路由 true返回一个json
                //此方法只能取到get的值，post方法无法取值
                var params = url.parse(request.url, true).query;
                route(handle, pathname, response, params); 
            }
        });
        
    }
    
    var server = http.createServer(onRequest);
    server.listen(3000);    
} 

console.log('finished');
module.exports.startServer = startServer;

router.js

var fs = require('fs');

function route(handle, pathname, response, params) {
    console.log('Routing a request for' + pathname);
    if (typeof handle[pathname] === 'function') {
        handle[pathname](response, params);
    } else {
        response.writeHead(200, {'Content-Type': 'text/html'});
        fs.createReadStream(__dirname + '/404.html', 'utf8').pipe(response);
    }
}

module.exports.route = route;

handler.js

var fs = require('fs');

function home(response) {
    response.writeHead(200, { 'Content-Type': 'text/html'});
    fs.createReadStream(__dirname + '/index.html', 'utf8').pipe(response);
}

function review(response) {
    response.writeHead(200, { 'Content-Type': 'text/html'});
    fs.createReadStream(__dirname + '/review.html', 'utf8').pipe(response);
}

function api_records(response, params) {
    response.writeHead(200, { 'Content-Type': 'application/json' });
    response.end(JSON.stringify(params));
}

module.exports = {
    home: home,
    review: review,
    api_records: api_records
}

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