Node.js 实现简单的接口服务器

来源：互联网发布：网上厨房软件编辑：程序博客网时间：2024/05/16 05:00

通过node.js来实现接口服务器的功能。主要特点为：

1）增加接口不需要重启

2）异步执行，但接口阅读的时候是同步的代码（从上而下），或者可以按需求并行，串行

这里只是抛出基本思路，所以使用GET,也没有加密之类的

首先启动监听端口，配置好访问规则。（通过识别特定URL ，动态执行相应的接口脚本）

-----

|----HamstrerServlet

| ------ command3G

| ------ login.js //登录脚本(这里只是简单演示)

| --- server.js (主启动脚本)

| --- dbutil (数据库操作)

server.js

var $ = require('jquery');var _ = require('underscore');var vm = require('vm');var fs = require('fs');var journey = require('journey');var async = require('async');var dbutil = require('./dbutil');String.prototype.replaceAll = function(s1, s2) {var demo = thiswhile (demo.indexOf(s1) != - 1)demo = demo.replace(s1, s2);return demo;}// Create a Routervar router = new(journey.Router);// Create the routing tablerouter.map(function() {// this.root.bind(function (req, res) { res.send("Welcome") });this.get(/HamstrerServlet\/(\w*\W*\w*)*/).bind(function(req, res, id) {var runJsPath = this.request.url.pathname.replaceAll("/HamstrerServlet", "") + ".js";console.log("执行的脚本文件:" + runJsPath);//传入的绑定变量var sandbox = {req: req,res: res,$: $,dbutil: dbutil,async: async,console: console};fs.readFile('./HamstrerServlet' + runJsPath, function(err, data) {vm.runInNewContext(data, sandbox, 'myfile.vm');});});this.post('/^HamstrerServlet\/(\w*)$/)').bind(function(req, res, data) {res.send(200);});});require('http').createServer(function(request, response) {var body = "";request.addListener('data', function(chunk) {body += chunk});request.addListener('end', function() {router.handle(request, body, function(result) {response.writeHead(result.status, result.headers);response.end(result.body);});});}).listen(8080);

dbutil.js

var mysql = require('mysql'); //导入mysql Modulevar pool = mysql.createPool({host: '192.168.140.237',user: 'root',password: '123456',database: 'command3G'});//查询sql语句function query(strSQL, param, callback) {pool.getConnection(function(err, connection) {connection.query(strSQL, param, function(err, rows, fields) {if (err) throw err;callback(rows, fields);connection.end();// connection.destroy();});});}exports.query = query;

console.log("beigin");//并行处理，相当于2个map最后再做一个ReReduceasync.parallel([    function(callback){        // 从数据库中获取当前时间dbutil.query("SELECT CURTIME()  AS DATE",null,function(rows,fields){callback(null, rows[0].DATE);});    },    function(callback){        //随便返回一个值        callback(null, '中文测试');    }],function(err, results){console.log(results);var retVal ={"currentTime": results[0],"desc": results[1]};res.sendBody(JSON.stringify(retVal));});

node server.js 启动后通过访问 http://localhost:8080/HamstrerServlet/command3G/login

就会输出：

这个时候修改login.js都会及时生效，不需要重新启动服务器