const express = require('express'); const bodyParser = require('body-parser'); const app = express(); app.use(bodyParser.urlencoded({ extended: false })); app.use(bodyParser.json()); app.post("/addData", (req, res) => { res.send("添加成功"); }); app.post("/dataList", (req, res) => { var arr = []; var zhansan = { name: "张三", age: 19 }; var lisi = { name: "李四", age: 19 }; arr.push(zhansan); arr.push(lisi); res.send(JSON.stringify(arr)); }); const port = 3000; app.listen(port, () => { console.log(`服务器已启动，正在监听端口 ${port}`); }); 上面是js文件，下面是index.html文件<!DOCTYPE html> <html> <head> <title>Node.js Demo</title> <script src="jquery-3.7.0.js"></script> </head> <body> <button onclick="addData()" class="addData">按钮一</button> <button onclick="getDataList()" class="DataList">按钮二</button> <div id="result"></div> <script> function addData() { $.post("/addData", function(data) { alert(data); }); } function getDataList() { $.post("/dataList", function(data) { var resultDiv = document.getElementById("result"); resultDiv.innerHTML = data; alert(data); }); } </script> </body> </html>没弹出按钮

app-info-parser:A javascript parser for parsing .ipa or .apk files. IPAAPK文件 js 解析器

info-parser入门NPM使用const AppInfoParser = require ( 'app-info-parser' )const parser = new AppInfoParser ( '../packages/test.apk' ) // or xxx.ipaparser . parse ( ) . then ( result => { console . log ...

替换为学生管理系统const express=require('express'); const mysql = require("mysql"); const app = express() const parser = require('body-parser') var jsonParser = parser.json(); app.use(jsonParser) const cors = require("cors"); app.use(cors()); app.post('/axios',(request,res,next)=>{ username=request.body.username.trim() password=request.body.password const connection = mysql.createConnection({ host:"localhost", user:"root", password:"123456", database:"my_db_01", port:3306 }) //数据库信息 connection.connect(); connection.query("select * from users where userName=? ",[username],(err,results,fields)=>{ if(err) throw err; if(results.length >0){ let str = JSON.stringify(results);//对对你进行字符串转换 next() const data={name:'axios'} console.log(results.length) //发送响应体 res.end("1"); } }) //连接数据库 connection.query('insert into users(username,password) value (?,?)',[username,password],(err,results,fields)=>{ if(err) { return(console.log(err.message)); } if(results.affectedRows==1){ //发送响应体 res.end('0') } }) connection.end(); }); app.listen(8080,()=>{ console.log("http://127.0.0.1:8080 has started ..."); });

const parser = require('body-parser'); const cors = require("cors"); const app = express(); const jsonParser = parser.json(); app.use(jsonParser); app.use(cors()); 2. 处理 POST 请求： ...

const express = require('express'); const bodyParser =require("body-parser"); const app = express(); //express ->app //NextHandleFunction =(req,res,next) =>{} app.use( bodyParser.urlencoded({ extended:false, }) ); app.use((req,res,next) =>{ console.log(1); req.body="123"; res.send("你好123") }); const port =3000; //请求 GET POST PUT DELETE app.get('/hello', (req, res) => { //res 响应 //req 请求 console.log(req.query); console.log(req.a); console.log(req.boby); console.log(req.params); console.log("我被请求到了"); res.send("你好"); });一行一行翻译

创建了一个 Express 应用程序（app）并声明了一个中间件函数（NextHandleFunction），使用了 bodyParser 中间件对请求体进行解析，打印输出了数字1，并将请求体数据设为字符串"123"，然后响应客户端"你好123"。...

const express = require('express'); const bodyParser = require('body-parser'); const app = express(); app.use(bodyParser.urlencoded({ extended: true })); app.post('/register', (req, res) => { const name = req.body.name; const password = req.body.password; const email = req.body.email; // 验证用户名和密码 const usernameRegex = /^[a-zA-Z0-9_]{3,20}$/; const passwordRegex = /^(?=.\d)(?=.[a-z])(?=.[A-Z])(?=.[a-zA-Z]).{8,}$/; const emailRegex =/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/; if (!usernameRegex.test(name)) { console.log('用户名验证失败'); res.send('用户名验证失败'); return; } if (!passwordRegex.test(password)) { console.log('密码验证失败'); res.send('密码验证失败'); return; } if (!emailRegex.test(email)) { console.log('密码验证失败'); res.send('密码验证失败'); return; } console.log('注册信息:'); console.log('用户名:',name); console.log('密码:', password); console.log('邮箱:', email); // 在这里执行其他操作，例如将信息保存到数据库等 res.send('注册成功！'); // 返回给客户端的响应 }); app.listen(8280, () => { console.log('8280端口号被监听'); });

这段代码是一个使用 Express 框架和 Body Parser 中间件的简单注册接口。在接口中，使用了正则表达式来验证用户名、密码和邮箱地址的格式。用户名的正则表达式为：/^[a-zA-Z0-9_]{3,20}$/，要求用户名由3到20个...

document.addEventListener('DOMContentLoaded', function() { const form = document.getElementById('registration-form'); form.addEventListener('submit', function (event) { event.preventDefault(); // 阻止表单提交 const name = document.getElementById('name').value; const password = document.getElementById('password').value; const email = document.getElementById('email').value; console.log('注册信息:'); console.log('用户名:', name); console.log('密码:', password); console.log('邮箱:', email); }); }); const express = require('express'); const bodyParser = require('body-parser'); const mssql = require('mssql'); const app = express(); app.use(bodyParser.urlencoded({ extended: false })); // 创建与数据库的连接 const connection = mssql.createConnection({ server: '192.168.10.223', user: 'sa', password: 'Servo01', database: 'demo' }); // 连接数据库 connection.connect(function (err) { if (err) { console.error('Error connecting to database:', err); return; } console.log('Connected to database!'); }); // 处理注册页面的 POST 请求 app.post('/', function (req, res) { const name = req.body.name; const password = req.body.password; const email = req.body.email; console.log('注册信息:'); console.log('用户名:', name); console.log('密码:', password); console.log('邮箱:', email); // 将数据保存到数据库 const query = INSERT INTO username (name, password, email) VALUES ('${name}','${password}','${email}'); const request = new mssql.Request(); connection.query(query, function (err, res) { if (err) { console.error('Error saving data to database:', err); return; } console.log('数据已保存到数据库!'); }); res.send('注册成功！'); }); app.listen(3000, function () { console.log('Server is running on port 3000'); });我要连接到sqlsever数据库然后将注册信息导进username表中

const bodyParser = require('body-parser'); const mssql = require('mssql'); const app = express(); app.use(bodyParser.urlencoded({ extended: false })); // 创建与数据库的连接 const config = { server:...

const express = require('express'); const bodyParser = require('body-parser'); const mssql = require('mssql'); const app = express(); app.use(bodyParser.urlencoded({ extended: false })); // 创建与数据库的连接 const connection = mssql.createConnection({ server: '192.168.10.223', user: 'sa', password: 'Servo01', database: 'demo' }); // 连接数据库 connection.connect(function (err) { if (err) { console.error('Error connecting to database:', err); return; } console.log('Connected to database!'); }); // 处理注册页面的 POST 请求 app.post('/', function (req, res) { const name = req.body.name; const password = req.body.password; const email = req.body.email; console.log('注册信息:'); console.log('用户名:', name); console.log('密码:', password); console.log('邮箱:', email); // 将数据保存到数据库 const query = INSERT INTO username (name, password, email) VALUES ('${name}','${password}','${email}'); const request = new mssql.Request(); request.query(query, function (err, request) { if (err) { console.error('Error saving data to database:', err); return; } console.log('数据已保存到数据库!'); }); res.send({ message:'请求成功' }) }); app.listen(3000, function () { console.log('Server is running on port 3000'); });这代码有什么问题吗，为什么数据放不进数据库

const query = 'INSERT INTO username (name, password, email) VALUES (@name, @password, @email)'; const request = new mssql.Request(); request.input('name', mssql.VarChar, name); request.input('password...

var createError = require('http-errors'); var express = require('express'); var path = require('path'); var cookieParser = require('cookie-parser'); var logger = require('morgan'); var indexRouter = require('./routes/index'); var usersRouter = require('./routes/users'); const UserRouter = require('./routes/admin/UserRouter'); const JWT = require('./util/JWT'); const NewsRouter = require('./routes/admin/NewsRouter'); const webNewsRouter = require('./routes/web/NewsRouter'); const ProductRouter = require('./routes/admin/ProductRouter'); var app = express(); // view engine setup app.set('views', path.join(dirname, 'views')); app.set('view engine', 'jade'); app.use(logger('dev')); app.use(express.json()); app.use(express.urlencoded({ extended: false })); app.use(cookieParser()); app.use(express.static(path.join(dirname, 'public'))); app.use('/', indexRouter); app.use('/users', usersRouter); app.use(webNewsRouter) /* /adminapi/* - 后台系统用的 /webapi/* - 企业官网用的 */ app.use((req, res, next) => { // 如果token有效 ,next() // 如果token过期了, 返回401错误 if (req.url === "/adminapi/user/login") { next() return; } const token = req.headers["authorization"].split(" ")[1] if (token) { var payload = JWT.verify(token) // console.log(payload) if (payload) { const newToken = JWT.generate({ _id: payload._id, username: payload.username }, "1d") res.header("Authorization", newToken) next() } else { res.status(401).send({ errCode: "-1", errorInfo: "token过期" }) } } }) app.use(UserRouter) app.use(NewsRouter) app.use(ProductRouter) // catch 404 and forward to error handler app.use(function (req, res, next) { next(createError(404)); }); // error handler app.use(function (err, req, res, next) { // set locals, only providing error in development res.locals.message = err.message; res.locals.error = req.app.get('env') === 'development' ? err : {}; // render the error page res.status(err.status || 500); res.render('error'); }); module.exports = app;

根据你提供的代码，这是一个使用 Express 框架构建的 Node.js 应用程序。它包含了一些中间件和路由处理程序。首先，它引入了一些依赖包和模块，如 http-errors、express、path、cookie-parser 和 logger...

<!DOCTYPE html> <html> <head> <title>注册页面</title> </head> <body> 用户注册 <form method="post" action="http://localhost:3000" id="registration-form"> <label for="username">用户名:</label> <input type="text" id="name" name="name" placeholder="请输入用户名" pattern="^[a-zA-Z0-9_]{3,20}$" required> <label for="email">邮箱:</label> <input type="email" id="email" name="email" placeholder="请输入邮箱地址" required> <label for="password">密码:</label> <input type="password" id="password" name="password" placeholder="请输入密码"pattern="^(?=.\d)(?=.[a-z])(?=.[A-Z])(?=.[a-zA-Z]).{8,}$" required> <input type="submit" value="注册"> </form> <script src="../zhuce/zhuce1.js"></script> </body> </html> const form = document.getElementById('register-form'); form.addEventListener('submit', function (event) { event.preventDefault(); // 阻止表单提交 const name = document.getElementById('name').value; const password = document.getElementById('password').value; const email = document.getElementById('email').value; console.log('注册信息:'); console.log('用户名:', name); console.log('密码:', password); console.log('邮箱:', email); }); const express = require('express'); const bodyParser = require('body-parser'); const mssql = require('mssql'); // 假设使用 MySQL 数据库 const app = express(); app.use(bodyParser.urlencoded({ extended: false })); // 创建与数据库的连接 const connection = mssql.createConnection({ server: 'CRMTEST', user: 'sa', password: 'Servo01', database: 'demo' }); // 连接数据库 connection.connect(function (err) { if (err) { console.error('Error connecting to database:', err); return; } console.log('Connected to database!'); }); // 处理注册页面的 POST 请求 app.post('http://localhost:3000', function (req, res) { const name = req.body.name; const password = req.body.password; const email = req.body.email; console.log('注册信息:'); console.log('用户名:', name); console.log('密码:', password); console.log('邮箱:', email); // 将数据保存到数据库 const query = INSERT INTO username (name, password, email) VALUES (${name},${name}, ${name}); connection.query(query, [name, password, email], function (err, result) { if (err) { console.error('Error saving data to database:', err); return; } console.log('数据已保存到数据库!'); }); res.send('注册成功！'); }); app.listen(3000, function () { console.log('Server is running on port 3000'); });为什么控制台打印不出来

const bodyParser = require('body-parser'); const mssql = require('mssql'); // 假设使用 MySQL 数据库 const app = express(); app.use(bodyParser.urlencoded({ extended: false })); // 创建与数据库的连接 ...

如何在 Node.js 中使用 Express、mysql 和 body-parser 模块创建 HTTP 服务器：

const bodyParser = require('body-parser'); const app = express(); const PORT = 3000; // 创建 MySQL 连接池 const pool = mysql.createPool({ host: 'localhost', user: 'root', password: 'password', ...

express app.post 如何获得前端传来的参数

2. 在代码中引入body-parser中间件：const bodyParser = require('body-parser') 3. 使用body-parser中间件将请求体解析为JSON格式：app.use(bodyParser.json()) 4. 在app.post中获取前端传来的参数：req....

<!DOCTYPE html> <html> <head> <title>查询和删除功能</title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script> </head> <body> 查询和删除 <form> <label for="queryInput">查询：</label> <input type="text" id="queryInput" name="queryInput"> <button onclick="query()">查询</button> </form> <form> <label for="deleteInput">删除：</label> <input type="text" id="deleteInput" name="deleteInput"> <button onclick="deleteItem()">删除</button> </form> <script src="script.js"></script> </body> </html> script.js： javascript function query() { var queryValue = document.getElementById("queryInput").value; $.ajax({ url: "/query", method: "GET", data: { query: queryValue }, success: function(response) { document.getElementById("result").innerText = response; }, error: function(xhr, status, error) { console.error(error); } }); } function deleteItem() { var deleteValue = document.getElementById("deleteInput").value; $.ajax({ url: "/delete", method: "DELETE", data: { delete: deleteValue }, success: function(response) { document.getElementById("result").innerText = response; }, error: function(xhr, status, error) { console.error(error); } }); } server.js： javascript const express = require('express'); const bodyParser = require('body-parser'); const app = express(); app.use(bodyParser.urlencoded({ extended: false })); app.use(bodyParser.json()); app.get('/query', (req, res) => { const queryValue = req.query.query; const result = 查询成功，结果为：${queryValue}; res.send(result); }); app.delete('/delete', (req, res) => { const deleteValue = req.body.delete; const result = 删除成功：${deleteValue};

后端部分是一个Express应用，监听两个路由：/query和/delete。当收到/query路由的GET请求时，会获取查询的值并返回一个包含查询结果的响应。当收到/delete路由的DELETE请求时，会获取删除的值并返回一个包含...

node-server-body-parser

该库还对地址栏参数做了处理，会挂载至请求体(req.query)的query属性使用安装npm i node-server-body-parser -S引入const bodyParser = require('node-server-body-parser');其中bodyParser是一个函数，接收一个...

const BodyParser = require('body-parser')

var express = require("express"); var app = express(); const BodyParser = require('body-parser') const sqlPromise = require("mysql2/promise");

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const BodyParser = require('body-parser')

var express = require("express"); var app = express(); const BodyParser = require('body-parser') const sqlPromise = require("mysql2/promise");

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