nodejs ejs模板数据库操作

1. 建立数据连接setting.js

var settings = {};

settings.db = {

host: 'localhost',

user: 'root',

password: '1234',

port: '3306',

database: 'testnode'

}

module. exports = settings;

 2. mysqlconn.js

var mysql = require( 'mysql');

var settings = require( './setting')

var conn = mysql. createConnection(settings.db);

conn. connect();

module. exports = conn;

3. app.js

app. set( 'views', path. join(__dirname, 'views'));

//设置模板的后缀是html

app. engine( 'html', require( 'ejs').renderFile);

//指定总模板

app. set( 'view engine', 'html');

 4.建立路由idnex.js

var express = require( 'express');

var router = express. Router();

var data = require( '../DataSql/index')

//用户学生列表

router. get( '/', function( req, res, next)

{

data. getList( function( err, retult)

{

res. render( 'index', {

title: '学生列表',

data:retult

});

})

});

module. exports = router;

5.views 建立index.html

DOCTYPE html>

< html lang= "en">

< head>

< meta charset= "UTF-8">

< title>

<%=title%>

title>

head>

< body style= " margin:auto 0">

< form action= "/users/search" method= "post">

< div style= " padding: 0fr; position:relative; margin: 0 auto;">

姓名：< input type= "text" name= "s_name" value= " < %=data.usernmae%>">

年龄：< input type= "text" name= "s_age" value= " < %=data.sex%>">

< input type= "submit" value= "查询">

div>

div>

form>

< table style= " margin: 10px">

< tr>

< th>编号th>

< th>姓名th>

< th>年龄th>

< th>操作th>

tr>

<% for(var i=0;i< data.length;i++){%>

< tr>

< td>

<%=data[i].id%>

td>

< td>

<%=data[i].usernmae%>

td>

< td>

<%=data[i].sex%>

td>

< td>< a href= "/users/add">添加用户a>td>

< td>< a href= "/users/del/ < %=data[i].id %>">删除a>td>

< td>< a href= "/users/toUpdate/ < %=data[i].id %>">修改a>td>

tr>

<%}%>

table>

body>

html>

5.数据库操作index.js

//var db = require("./mysql");

var conn = require( "../DataSql/sqlconn");

/* exports.getList = function (callback)

{

var sqlstr = "select * from student";

db.driver.execQuery(sqlstr,function(err, data)

{

return callback(err, data);

});

}; */

exports. getList = function ( callback)

{

var sqlstr = "select * from student";

conn. query(sqlstr, function( err, data)

{

return callback(err, data);

});

};

//conn.end();

//console.log(db);

pasting

 

数据库

/*

Navicat MySQL Data Transfer

Source Server         : localhost

Source Server Version : 50519

Source Host           : localhost:3306

Source Database       : testnode

Target Server Type    : MYSQL

Target Server Version : 50519

File Encoding         : 65001

Date: 2018-09-14 15:26:22

*/

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------

-- Table structure for student

-- ----------------------------

DROP TABLE IF EXISTS `student`;

CREATE TABLE `student` (

  `id` int(11) NOT NULL,

  `usernmae` varchar(255) DEFAULT NULL,

  `sex` varchar(100) DEFAULT NULL,

  PRIMARY KEY (`id`)

) ENGINE=InnoDB DEFAULT CHARSET=latin1;

-- ----------------------------

-- Records of student

-- ----------------------------

INSERT INTO `student` VALUES ('1', 'dqh', '33');

INSERT INTO `student` VALUES ('2', 'ddd', '11');

INSERT INTO `student` VALUES ('3', 'eee', '11');