Ejercicio 4. Sencillo webservice calculador de áreas de figuras planas
El módulo Node surfaces.js (el mismo que el del ejercicio 3):
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 |
exports.square = function (s) { return s * s; }; exports.rectangle = function (b, h) { return b * h; }; exports.triangle = function (b, h) { return b * h / 2; }; exports.circle = function (r) { return Math.PI * r * r; }; exports.ellipse = function (a, b) { return Math.PI * a * b; }; |
ej04.js:
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 |
var http = require('http'); var surfaces = require('./surfaces.js'); http.createServer(function (req, res) { var urlParams = req.url.split("/"); var figure = urlParams[1]; var op1 = parseFloat(urlParams[2]); var op2 = parseFloat(urlParams[3]); var surface; switch(figure) { case 'square': surface = surfaces.square(op1); break; case 'triangle': surface = surfaces.triangle(op1, op2); break; case 'rectangle': surface = surfaces.rectangle(op1, op2); break; case 'circle': surface = surfaces.circle(op1); break; default: surface = 'You missed the option. Please try again.\n'; break; } res.writeHead(200, {'Content-Type': 'text/plain'}); res.end("The surface of your " + figure + " is " + surface.toString() + " square meters\n"); }).listen(2012, "127.0.0.1"); console.log('Webservice running at http://127.0.0.1:2012/'); |
Ejecución de ej04.js:
|
1 2 3 4 5 6 7 8 9 10 11 12 13 |
jordi@jordi-Aspire-5810T:~/nodes$ node ej04.js & [1] 3995 jordi@jordi-Aspire-5810T:~/nodes$ Webservice running at http://127.0.0.1:2012/ jordi@jordi-Aspire-5810T:~/nodes$ curl http://localhost:2012/square/8 The surface of your square is 64 square meters jordi@jordi-Aspire-5810T:~/nodes$ curl http://localhost:2012/circle/8 The surface of your circle is 201.06192982974676 square meters jordi@jordi-Aspire-5810T:~/nodes$ curl http://localhost:2012/triangle/8/2 The surface of your triangle is 8 square meters jordi@jordi-Aspire-5810T:~/nodes$ curl http://localhost:2012/rectangle/8/2 The surface of your rectangle is 16 square meters jordi@jordi-Aspire-5810T:~/nodes$ |