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kogleee
2023-11-08 15:18:30 +03:00
commit a4c176e9d2
5 changed files with 1226 additions and 0 deletions
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142
app.js Normal file
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var express = require('express');
var multer = require("multer");
var bodyParser = require('body-parser');
var fs = require('fs');
var app = express();
var jsonParser = bodyParser.json();
app.use(express.static(__dirname + '/public'));
// получение списка данных
app.get('/api/users', function (req, res) {
var content = fs.readFileSync('users.json', 'utf8');
var users = JSON.parse(content);
res.send(users);
});
// получение одного пользователя по id
app.get('/api/users/:id', function (req, res) {
var id = req.params.id; // получаем id
var content = fs.readFileSync('users.json', 'utf8');
var users = JSON.parse(content);
var user = null;
// находим в массиве пользователя по id
for (var i = 0; i < users.length; i++) {
if (users[i].id == id) {
user = users[i];
break;
}
}
// отправляем пользователя
if (user) {
res.send(user);
} else {
res.status(404).send();
}
});
// получение отправленных данных
app.post('/api/users', jsonParser, function (req, res) {
if (!req.body) return res.sendStatus(400);
var userName = req.body.name;
var userAge = req.body.age;
var user = { name: userName, age: userAge };
var data = fs.readFileSync('users.json', 'utf8');
var users = JSON.parse(data);
// находим максимальный id
var id = Math.max.apply(
Math,
users.map(function (o) {
return o.id;
})
);
// увеличиваем его на единицу
user.id = id + 1;
// добавляем пользователя в массив
users.push(user);
var data = JSON.stringify(users);
// перезаписываем файл с новыми данными
fs.writeFileSync('users.json', data);
res.send(user);
});
// удаление пользователя по id
app.delete('/api/users/:id', function (req, res) {
var id = req.params.id;
var data = fs.readFileSync('users.json', 'utf8');
var users = JSON.parse(data);
var index = -1;
// находим индекс пользователя в массиве
for (var i = 0; i < users.length; i++) {
if (users[i].id == id) {
index = i;
break;
}
}
if (index > -1) {
// удаляем пользователя из массива по индексу
var user = users.splice(index, 1)[0];
var data = JSON.stringify(users);
fs.writeFileSync('users.json', data);
// отправляем удаленного пользователя
res.send(user);
} else {
res.status(404).send();
}
});
// изменение пользователя
app.put('/api/users', jsonParser, function (req, res) {
if (!req.body) return res.sendStatus(400);
var userAge = req.body.age;
var userName = req.body.name;
if (userName == "" && userAge == "") return;
var regex = /[a-zA-Z]/;
if (!regex.test(userName) || userName.length < 3 || userName.length > 8) {
return
}
var regex = /[0-9]/;
if (!regex.test(userAge) || Number(userAge) > 130) {
return
}
var userId = req.body.id;
var data = fs.readFileSync('users.json', 'utf8');
var users = JSON.parse(data);
var user;
for (var i = 0; i < users.length; i++) {
if (users[i].id == userId) {
user = users[i];
break;
}
}
// изменяем данные у пользователя
if (user) {
user.age = userAge;
user.name = userName;
var data = JSON.stringify(users);
fs.writeFileSync('users.json', data);
res.send(user);
} else {
res.status(404).send(user);
}
});
app.use(multer({dest:"uploads"}).single("filedata"));
app.post("/upload", function (req, res, next) {
let filedata = req.file;
console.log(filedata);
if(!filedata)
res.send("Ошибка при загрузке файла");
else
res.send("Файл загружен");
});
app.listen(3000, function () {
console.log('Сервер ожидает подключения...');
});

847
package-lock.json generated Normal file
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"engines": {
"node": ">= 0.8"
}
},
"node_modules/xtend": {
"version": "4.0.2",
"resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
"integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
"engines": {
"node": ">=0.4"
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}
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9
package.json Normal file
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{
"name": "webapp",
"version": "1.0.0",
"dependencies": {
"body-parser": "^1.16.0",
"express": "^4.14.0",
"multer": "^1.4.5-lts.1"
}
}

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public/index.html Normal file
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta
name="viewport"
content="width=device-width"
/>
<title>Список пользователей</title>
<link
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"
rel="stylesheet"
/>
<script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
</head>
<body>
<h2>Список пользователей</h2>
<form name="userForm">
<input type="hidden" name="id" value="0" />
<div class="form-group">
<label for="name">Имя:</label>
<input class="form-control" name="name" />
</div>
<div class="form-group">
<label for="age">Возраст:</label>
<input class="form-control" name="age" />
</div>
<div class="form-png-loud" action="/upload" method="post">
<label>Файл</label><br>
<input type="file" name="filedata"/>
<input type="submit" value="Send" />
</div>
<div class="panel-body">
<button
type="submit"
class="btn btn-sm btn-primary"
>
Сохранить
</button>
<a id="reset" class="btn btn-sm btn-primary"
>Сбросить</a
>
</div>
</form>
<table
class="table table-condensed table-striped table-bordered"
>
<thead>
<tr>
<th>Id</th>
<th>Имя</th>
<th>возраст</th>
<th></th>
</tr>
</thead>
<tbody></tbody>
</table>
<script>
// Получение всех пользователей
function GetUsers() {
$.ajax({
url: '/api/users',
type: 'GET',
contentType: 'application/json',
success: function (users) {
var rows = '';
$.each(users, function (
index,
user
) {
// добавляем полученные элементы в таблицу
rows += row(user);
});
$('table tbody').append(rows);
},
});
}
// Получение одного пользователя
function GetUser(id) {
$.ajax({
url: '/api/users/' + id,
type: 'GET',
contentType: 'application/json',
success: function (user) {
var form =
document.forms['userForm'];
form.elements['id'].value = user.id;
form.elements['name'].value =
user.name;
form.elements['age'].value =
user.age;
},
});
}
// Добавление пользователя
function CreateUser(userName, userAge) {
if (userName == "" || userAge == "") return;
var regex = /[a-zA-Z]/;
if (!regex.test(userName) || userName.length < 3 || userName.length > 8) {
return
}
var regex = /[0-9]/;
if (!regex.test(userAge) || Number(userAge) > 130) {
return
}
$.ajax({
url: 'api/users',
contentType: 'application/json',
method: 'POST',
data: JSON.stringify({
name: userName,
age: userAge,
}),
success: function (user) {
reset();
$('table tbody').append(row(user));
},
});
}
// Изменение пользователя
function EditUser(userId, userName, userAge) {
$.ajax({
url: 'api/users',
contentType: 'application/json',
method: 'PUT',
data: JSON.stringify({
id: userId,
name: userName,
age: userAge,
}),
success: function (user) {
reset();
$(
"tr[data-rowid='" +
user.id +
"']"
).replaceWith(row(user));
},
});
}
// сброс формы
function reset() {
var form = document.forms['userForm'];
form.reset();
form.elements['id'].value = 0;
}
// Удаление пользователя
function DeleteUser(id) {
$.ajax({
url: 'api/users/' + id,
contentType: 'application/json',
method: 'DELETE',
success: function (user) {
console.log(user);
$(
"tr[data-rowid='" +
user.id +
"']"
).remove();
},
});
}
// создание строки для таблицы
var row = function (user) {
return (
"<tr data-rowid='" +
user.id +
"'><td>" +
user.id +
'</td>' +
'<td>' +
user.name +
'</td> <td>' +
user.age +
'</td>' +
"<td><a class='editLink' data-id='" +
user.id +
"'>Изменить</a> | " +
"<a class='removeLink' data-id='" +
user.id +
"'>Удалить</a></td></tr>"
);
};
// сброс значений формы
$('#reset').click(function (e) {
e.preventDefault();
reset();
});
// отправка формы
$('form').submit(function (e) {
e.preventDefault();
var id = this.elements['id'].value;
var name = this.elements['name'].value;
var age = this.elements['age'].value;
if (id == 0) CreateUser(name, age);
else EditUser(id, name, age);
});
// нажимаем на ссылку Изменить
$('body').on('click', '.editLink', function () {
var id = $(this).data('id');
GetUser(id);
});
// нажимаем на ссылку Удалить
$('body').on(
'click',
'.removeLink',
function () {
var id = $(this).data('id');
DeleteUser(id);
}
);
// загрузка пользователей
GetUsers();
</script>
</body>
</html>

1
users.json Normal file
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[{"id":1,"name":"Tom","age":24},{"id":2,"name":"Bob","age":"27"},{"name":"jon","age":"32","id":4},{"name":"loli","age":"32","id":5},{"name":"loli","age":"32","id":6}]