由于我正在学习node.js，这对我来说是新的，因此我需要一些帮助来学习它，而且我遇到了很多问题。
var express = require('express');
var http = require('http');
var mysql = require('mysql');
var app = express();
var bodyParser = require('body-parser');
/**
parse all data
**/
app.use(bodyParser.urlencoded({ extended: true }));
/**
used for date format
**/
var dateFormat = require('dateformat');
var now = new Date();
/**
used for template
**/
app.set('view enjine', 'ejs');
/**
used for date format
**/
app.use('/js', express.static(__dirname+ '/node_modules/bootstrap/dist/js'));
app.use('/css', express.static(__dirname+ '/node_modules/bootstrap/dist/css'));
app.use('/js', express.static(__dirname+ '/node_modules/jquery/dist'));
app.use('/js', express.static(__dirname+ '/node_modules/tether/dist/js'));
app.use('/css', express.static(__dirname+ '/public/assets/css'));
app.use('/fonts', express.static(__dirname+'./node_modules/font-awesome/fonts'));
app.use('/static', express.static('./node_modules/font-awesome/css'));
app.use('/public', express.static(__dirname + "/public"));
app.use('/vendor', express.static(__dirname + "/vendor"));
const baseURL="http://127.0.0.1:8080";
const con = mysql.createConnection({
host : 'localhost',
user : 'root',
password : '',
database : 'my_db'
});
con.connect(console.log('database connected'));
app.get('/',function(req,res){
con.query('SELECT * FROM student_info', function (error, results) {
if (error) throw error;
console.log('The solution is: ', results);
});
res.render('./pages/index.ejs');
});
app.get('/form',function(req,res){
res.render('./pages/form.ejs');
});
app.post('/form',function(req,res){
console.log(req.body);
var insertEventData = {
s_id:req.body.s_id,
student_name:req.body.student_name,
blood_group:req.body.blood_group,
d_birth:req.body.d_birth,
religion:req.body.religion,
tel_number:req.body.tel_number,
image: req.body.image,
father_name:req.body.father_name,
mother_name:req.body.mother_name,
f_occupation:req.body.f_occupation,
m_occupation:req.body.m_occupation,
f_income:req.body.f_income,
g_tel:req.body.g_tel,
g_name:req.body.g_name,
v_name:req.body.v_name,
strt_name:req.body.strt_name,
post_office:req.body.post_office,
thana_name:req.body.thana_name,
tel_num:req.body.tel_num,
p_village:req.body.p_village,
p_street:req.body.p_street,
p_post:req.body.p_post,
p_thana:req.body.p_thana,
p_district:req.body.p_district,
exam_name:req.body.exam_name,
department:req.body.department,
board_name:req.body.board_name,
i_name:req.body.i_name,
roll_number:req.body.roll_number,
session:req.body.session,
exam_center:req.body.exam_center,
passing_year:req.body.passing_year,
gpa_number:req.body.gpa_number,
gpa_num:req.body.gpa_num,
};
con.query("INSERT INTO student_info SET ? ", insertEventData , function(err,result){
if(err)
throw err;
res.redirect(baseURL);
});
});
app.get('/table',function(req,res){
con.query("SELECT `s_id`, `student_name`,`roll_number` FROM `student_info`", function (error, result) {
console.log(result);
res.render('./pages/table.ejs',{
items : result
});
});
});
app.get('/details/:s_id',function(req,res){
con.query('SELECT * FROM student_info WHERE s_id = ?',req.params.s_id, function (error, results) {
if (error) throw error;
console.log('details: ', results);
});
res.render('./pages/details.ejs',{
item : results
});
});
app.listen(8080);
console.log('you are on server 8080');<% include ../partials/header.ejs %>
<div class="page-wrapper">
<% include ../partials/sidenav.ejs %>
<!-- PAGE CONTAINER-->
<div class="page-container2">
<% include ../partials/topnav.ejs %>
<!-- MAIN CONTENT-->
<div class="main-content">
<div class="section__content section__content--p30">
<div class="container-fluid">
<div class="col-lg-12">
<div class="table-responsive table--no-card m-b-30">
<% if(items.length > 0){ %>
<table class="table table-borderless table-striped table-earning">
<thead>
<tr>
<th>ID</th>
<th>Student Name</th>
<th>Roll Number</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<% items.forEach(function(item,table){ %>
<tr>
<td><%= table+1 %></td>
<td><%= item.student_name %></td>
<td><%= item.roll_number %></td>
<td>
<a href="details" class="btn btn-success">Details</a>
<a href="" class="btn btn-danger">Delete</a>
</td>
</tr>
<% }); %>
</tbody>
</table>
<% }else{ %>
<p><strong>There is no element in the database</strong></p>
<% } %>
</div>
</div>
<section>
<div class="container-fluid">
<div class="row">
<div class="col-md-12">
<div class="copyright">
<p>Copyright © 2018 Utshab. All rights reserved. Template by <a href="https://Utshab.net">Utshab</a>.</p>
</div>
</div>
</div>
</div>
</section>
</div>
</div>
</div>
<% include ../partials/footer.ejs %>
这是我的github仓库 https://github.com/Nodeboy28/JMCS-database.git