WIN7 Nodejs framework Express use and database public operation class collation

Specific steps:

1, installation and development tools Webstorm;

2, install NODE/NPM (: https://nodejs.org/download/) Choose suitable for your xxx.mis installation;

3. Install Express frame (CMD window mode, execute with npm command: NPM install Express);

4, create nodejsexpress project, use Ejs template;

5. Download Node-mssql Connection Database driver (enter the specified directory with npm command: NPM install node-mssql);

6, copy Node-mssql folder to express project Node-modules directory;

7, using DBHelper tool class, data query, and Ejs page data display;

The DBHelper code is as follows:

varNode_mssql = require (' Node-mssql '));/*add configuration to query object*/varQueryobj =NewNode_mssql. Query ({host:' 192.168.20.135 ', Port:1433, Username:' Sa ', Password:' Sa ', DB:' Database '});varInsert =function(data, inserttable, callback, res) {queryobj.table (inserttable);    Queryobj.data (data); Queryobj.insert (function(results) {//SuccessCallback (RES, "add success! "); }, function(err, sql) {if(ERR) {//ErrorCallback (res, "Add failed! ");        Console.log (ERR); }    });};varList =function(Wheresql, table, callback, res) {queryobj.table (table);    Queryobj.where (Wheresql); Queryobj.select (function(data) {//SuccessCallback (data, RES); }, function(err, sql) {if(ERR) {//ErrorConsole.log (ERR); }    });};varUpdate =function(data, option, Uptable, callback, res) {queryobj.table (uptable);    Queryobj.data (data);    Queryobj.where (option); Queryobj.update (function(results) {//Success CallbackCallback (RES, "modified successfully! "); }, function(err, sql) {if(Err) {callback (res,"The modification failed!" ");        Console.log (ERR); }    });}; Exports.insert=insert;exports.list=list;exports.update= Update;

To use DBHelper, show in the list page, first configure App.js, set the action filter, code

After this configuration, the access address: Http://xxxx/list is distributed to the List.js controller, and then the list.js to process the code, LIST.EJS for the note display,

The List.js code is as follows:

varExpress = require (' Express ');varDBHelper = require ('./dbhelper.js '));varRouter =Express. Router ();/*GET home page.*/Router.get (‘/‘,function(req, res, next) {Dbhelper.list ({},' Dbo.table1 ', callback, RES); //The list parameter, the first one is the wheresql query condition, the JSON format, the second is the table name, the third is the callback function, and the fourth is the response class that express returns the client});varcallback =function(data, res) {Res.render (' List ', {listdata:data}); //first parameter: The template name corresponds to List.ejs, the second is the parameter name and the data};module.exports= Router;

The List.ejs code is as follows:

<! DOCTYPE html>(var i = 0; i < Listdata.length; i++) {%>    <li><%= listdata[i]. Id%>: <%= listdata[i]. Name%></li>    <%}%></ul></body>
Execution results
WIN7 Nodejs framework Express use and database public operation class collation