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);
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');
