Node. js implements simple interface servers

Node. js implements simple interface servers

Use node. js to implement interface server functions. Main features:

1) You do not need to restart the added interface.
2) asynchronous execution, but the interface reading is Synchronous Code (from top to bottom), or can be parallel and serial as needed
This is just to throw the basic idea, so GET and no encryption are used.
First, start the listening port and configure the access rules. (Dynamically execute corresponding Interface scripts by identifying specific URLs)

-----
| ---- HamstrerServlet
| ------ Command3G
| ------ Login. js // login script (this is just a simple demonstration)
| --- Server. js (main STARTUP script)
| --- Dbutil (Database Operations)

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 = this
While (demo. indexOf (s1 )! =-1)
Demo = demo. replace (s1, s2 );
Return demo;
}
// Create a Router
Var router = new (journey. Router );

// Create the routing table
Router. 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 ("executed script file:" + runJsPath );

// Input Bind Variable
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 (1, 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'); // import the mysql Module

Var pool = mysql. createPool ({
Host: '1970. 168.140.237 ',
User: 'root ',
Password: '000000 ',
Database: 'command3g'
});

// Query SQL statements
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;

After node server. js is started, access http: // localhost: 8080/HamstrerServlet/command3G/login

The output is as follows:

At this time, modifications to login. js will take effect immediately and do not need to restart the server.

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