\u751f\u6210\u7684\u6587\u4ef6\u5982\u4e0b\u6240\u793a<\/p>\n
server\/
\n\u251c\u2500\u2500 bin\/
\n\u2502 \u2514\u2500\u2500 www # \u542f\u52a8\u811a\u672c
\n\u251c\u2500\u2500 public\/ # \u9759\u6001\u6587\u4ef6（CSS\u3001JS\u3001\u56fe\u7247\u7b49）
\n\u251c\u2500\u2500 routes\/ # \u8def\u7531\u6587\u4ef6
\n\u2502 \u251c\u2500\u2500 index.js # \u6839\u8def\u7531
\n\u2502 \u2514\u2500\u2500 users.js # \u7528\u6237\u8def\u7531
\n\u251c\u2500\u2500 views\/ # \u89c6\u56fe\u6587\u4ef6（EJS \u6a21\u677f）
\n\u2502 \u251c\u2500\u2500 error.ejs # \u9519\u8bef\u9875\u9762
\n\u2502 \u2514\u2500\u2500 index.ejs # \u9996\u9875
\n\u251c\u2500\u2500 app.js # \u5e94\u7528\u4e3b\u6587\u4ef6
\n\u251c\u2500\u2500 package.json # \u9879\u76ee\u4f9d\u8d56\u548c\u914d\u7f6e
\n\u2514\u2500\u2500 package-lock.json # \u4f9d\u8d56\u9501\u6587\u4ef6<\/p>\n
3.\u5728server\u6587\u4ef6\u4e2d\u5b89\u88c5\u4f9d\u8d56<\/p>\n
\u00a0npm install<\/p>\n
npm install\u00a0\u547d\u4ee4\u4f1a\u5b89\u88c5\u5f53\u524d\u9879\u76ee\u4e2d\u00a0package.json\u00a0\u6587\u4ef6\u91cc\u5b9a\u4e49\u7684\u6240\u6709\u4f9d\u8d56\u5305<\/p>\n
\u5b89\u88c5\u5b8c\u6210\u540e，MySQL \u5305\u4f1a\u88ab\u6dfb\u52a0\u5230\u00a0package.json\u00a0\u7684\u00a0dependencies\u00a0\u5b57\u6bb5\u4e2d<\/p>\n
4.\u56de\u5230\u5728\u7b2c\u4e00\u6b65\u521b\u5efa\u7684\u76ee\u5f55\u4e2d<\/p>\n
npm init -y
\nnpm i mysql <\/p>\n
\u5b89\u88c5\u5b8c\u6210\u540e，MySQL \u5305\u4f1a\u88ab\u6dfb\u52a0\u5230\u00a0package.json\u00a0\u7684\u00a0dependencies\u00a0\u5b57\u6bb5\u4e2d\u3002\u5728\u6b64\u57fa\u7840\u4e0a\u53ef\u4ee5\u5b89\u88c5mysql\u7b49\u5404\u79cd\u5e93<\/p>\n
5.\u8fd0\u884c<\/p>\n
npm start<\/p>\n
\u6700\u540e\u7684\u6587\u4ef6\u5982\u56fe\u6240\u793a（\u6ca1\u6709.env\u8fd9\u4e2a\u6211\u81ea\u5df1\u52a0\u7684）![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418205726-6802bcb676574.png\")
<\/p>\n
\n
\u6587\u4ef6\u89e3\u6790<\/h2>\n
\u6838\u5fc3\u6587\u4ef6：<\/p>\n
1.bin\/www<\/p>\n
#!\/usr\/bin\/env node<\/p>\n
\/**
\n * \u5f15\u5165\u4f9d\u8d56\u6a21\u5757
\n *\/<\/p>\n
var app = require('..\/app');\/\/ \u5f15\u5165 Express \u5e94\u7528
\nvar debug = require('debug')('server:server');
\nvar http = require('http');<\/p>\n
\/**
\n * \u8bbe\u7f6e\u7aef\u53e3
\n *\/<\/p>\n
var port = normalizePort(process.env.PORT || '3000');
\napp.set('port', port);<\/p>\n
\/**
\n * \u521b\u5efa HTTP \u670d\u52a1\u5668
\n *\/<\/p>\n
var server = http.createServer(app);<\/p>\n
\/**
\n * \u76d1\u542c\u7aef\u53e3
\n *\/<\/p>\n
server.listen(port);
\nserver.on('error', onError);
\nserver.on('listening', onListening);<\/p>\n
\/**
\n * Normalize a port into a number, string, or false.
\n *\/<\/p>\n
function normalizePort(val) {
\n var port = parseInt(val, 10);<\/p>\n
if (isNaN(port)) {
\n \/\/ named pipe
\n return val;
\n }<\/p>\n
if (port >= 0) {
\n \/\/ port number
\n return port;
\n }<\/p>\n
return false;
\n}<\/p>\n
\/**
\n * Event listener for HTTP server "error" event.
\n *\/<\/p>\n
function onError(error) {
\n if (error.syscall !== 'listen') {
\n throw error;
\n }<\/p>\n
var bind = typeof port === 'string'
\n ? 'Pipe ' + port
\n : 'Port ' + port;<\/p>\n
\/\/ handle specific listen errors with friendly messages
\n switch (error.code) {
\n case 'EACCES':
\n console.error(bind + ' requires elevated privileges');
\n process.exit(1);
\n break;
\n case 'EADDRINUSE':
\n console.error(bind + ' is already in use');
\n process.exit(1);
\n break;
\n default:
\n throw error;
\n }
\n}<\/p>\n
\/**
\n * Event listener for HTTP server "listening" event.
\n *\/<\/p>\n
function onListening() {
\n var addr = server.address();
\n var bind = typeof addr === 'string'
\n ? 'pipe ' + addr
\n : 'port ' + addr.port;
\n debug('Listening on ' + bind);
\n}<\/p>\n
\u603b\u4e4b，\u8be5\u6587\u4ef6\u662f Express \u5e94\u7528\u7684\u542f\u52a8\u811a\u672c，\u901a\u5e38\u4f4d\u4e8e\u00a0bin\/www\u00a0\u6587\u4ef6\u4e2d\u3002\u5b83\u7684\u4e3b\u8981\u4f5c\u7528\u662f\u542f\u52a8 HTTP \u670d\u52a1\u5668\u5e76\u76d1\u542c\u6307\u5b9a\u7aef\u53e3，\u8be5\u811a\u672c\u6587\u4ef6\u5f00\u5934\u8c03\u7528\u4e86..app\u8fd9\u4e2a\u6587\u4ef6<\/p>\n
2.app.js<\/p>\n
var createError = require('http-errors');
\nvar express = require('express');
\nvar path = require('path');
\nvar cookieParser = require('cookie-parser');
\nvar logger = require('morgan');<\/p>\n
var indexRouter = require('.\/routes\/index');
\nvar usersRouter = require('.\/routes\/users');<\/p>\n
var app = express();<\/p>\n
\/\/ view engine setup
\napp.set('views', path.join(__dirname, 'views'));
\napp.set('view engine', 'ejs');<\/p>\n
app.use(logger('dev'));
\napp.use(express.json());
\napp.use(express.urlencoded({ extended: false }));
\napp.use(cookieParser());
\napp.use(express.static(path.join(__dirname, 'public')));<\/p>\n
app.use('\/', indexRouter);
\napp.use('\/users', usersRouter);<\/p>\n
\/\/ catch 404 and forward to error handler
\napp.use(function(req, res, next) {
\n next(createError(404));
\n});<\/p>\n
\/\/ error handler
\napp.use(function(err, req, res, next) {
\n \/\/ set locals, only providing error in development
\n res.locals.message = err.message;
\n res.locals.error = req.app.get('env') === 'development' ? err : {};<\/p>\n
\/\/ render the error page
\n res.status(err.status || 500);
\n res.render('error');
\n});<\/p>\n
module.exports = app;<\/p>\n
- \n
- \u8fd9\u6bb5\u4ee3\u7801\u5b8c\u6210\u4e86\u4e00\u4e2a Express \u5e94\u7528\u7684\u57fa\u672c\u914d\u7f6e，\u5305\u62ec：\n
- \n
- \u5f15\u5165\u4f9d\u8d56\u6a21\u5757\u3002<\/li>\n
- \u8bbe\u7f6e\u89c6\u56fe\u5f15\u64ce\u548c\u9759\u6001\u6587\u4ef6\u76ee\u5f55\u3002<\/li>\n
- \u914d\u7f6e\u4e2d\u95f4\u4ef6（\u65e5\u5fd7\u3001\u8bf7\u6c42\u4f53\u89e3\u6790\u3001Cookie \u89e3\u6790\u7b49）\u3002<\/li>\n
- \u5b9a\u4e49\u8def\u7531\u3002<\/li>\n
- \u5904\u7406 404 \u9519\u8bef\u548c\u5168\u5c40\u9519\u8bef\u3002<\/li>\n<\/ul>\n<\/li>\n
- \u901a\u8fc7\u8fd0\u884c\u6b64\u6587\u4ef6，\u53ef\u4ee5\u542f\u52a8\u4e00\u4e2a Express \u670d\u52a1\u5668，\u5904\u7406 HTTP \u8bf7\u6c42\u5e76\u8fd4\u56de\u54cd\u5e94\u3002<\/li>\n<\/ul>\n
\u8fd9\u4e2a\u6587\u4ef6\u5728\u6700\u540e\u00a0app\u00a0\u5bf9\u8c61，\u4f9b\u5176\u4ed6\u6a21\u5757（\u5982\u00a0bin\/www）\u4f7f\u7528，<\/p>\n
app\u00a0\u5bf9\u8c61\u662f\u00a0express()\u00a0\u51fd\u6570\u7684\u8fd4\u56de\u503c，\u5b83\u662f\u4e00\u4e2a Express \u5e94\u7528\u5b9e\u4f8b，\u5177\u6709\u4ee5\u4e0b\u6838\u5fc3\u5c5e\u6027\u548c\u65b9\u6cd5：<\/p>\n
\u5c5e\u6027<\/h4>\n
- \n
- app.settings：\u5b58\u50a8\u5e94\u7528\u7684\u914d\u7f6e\u9879，\u4f8b\u5982：\n
- \n
- views：\u89c6\u56fe\u6587\u4ef6\u76ee\u5f55（\u901a\u8fc7\u00a0app.set('views', path.join(__dirname, 'views'))\u00a0\u8bbe\u7f6e）\u3002<\/li>\n
- view engine：\u89c6\u56fe\u5f15\u64ce（\u901a\u8fc7\u00a0app.set('view engine', 'ejs')\u00a0\u8bbe\u7f6e）\u3002<\/li>\n<\/ul>\n<\/li>\n
- app.locals：\u5e94\u7528\u7684\u5c40\u90e8\u53d8\u91cf，\u53ef\u4ee5\u5728\u6240\u6709\u89c6\u56fe\u4e2d\u8bbf\u95ee\u3002<\/li>\n
- app._router：\u5b58\u50a8\u8def\u7531\u548c\u4e2d\u95f4\u4ef6\u7684\u5806\u6808\u3002<\/li>\n<\/ul>\n
\u65b9\u6cd5<\/h4>\n
- \n
- app.use()：\u52a0\u8f7d\u4e2d\u95f4\u4ef6\u6216\u8def\u7531\u3002<\/li>\n
- app.set()：\u8bbe\u7f6e\u5e94\u7528\u7684\u914d\u7f6e\u9879\u3002<\/li>\n
- app.get()：\u83b7\u53d6\u914d\u7f6e\u9879\u7684\u503c\u6216\u5b9a\u4e49\u8def\u7531\u3002<\/li>\n
- app.listen()：\u542f\u52a8\u670d\u52a1\u5668\u5e76\u76d1\u542c\u7aef\u53e3\u3002<\/li>\n<\/ul>\n
\u5728\u00a0bin\/www\u00a0\u4e2d，app\u00a0\u5bf9\u8c61\u4f1a\u88ab\u4f20\u9012\u7ed9\u00a0http.createServer()，\u7528\u4e8e\u542f\u52a8 HTTP \u670d\u52a1\u5668\u3002<\/p>\n
\u603b\u4e4b，\u524d\u9762\u90a3\u4e9b\u6587\u4ef6\u548c\u5404\u79cd\u8c03\u7528\u6700\u540e\u5b8c\u6210\u7684\u5c31\u662f\u542f\u52a8\u4e00\u4e2a Express \u670d\u52a1\u5668，\u5b83\u5904\u7406 HTTP \u8bf7\u6c42\u5e76\u8fd4\u56de\u54cd\u5e94（\u4e2a\u4eba\u7406\u89e3\u6709\u610f\u89c1\u53ef\u6307\u51fa）<\/p>\n
HTTP \u670d\u52a1\u5668\u548c Express \u670d\u52a1\u5668\u7684\u5173\u7cfb<\/h4>\n
- \n
- Express \u57fa\u4e8e HTTP \u670d\u52a1\u5668：\n
- \n
- Express \u662f\u5bf9 HTTP \u670d\u52a1\u5668\u7684\u5c01\u88c5，\u5e95\u5c42\u4ecd\u7136\u4f7f\u7528 Node.js \u7684\u00a0http\u00a0\u6a21\u5757\u3002<\/li>\n
- \u5728 Express \u4e2d，app.listen()\u00a0\u5b9e\u9645\u4e0a\u8c03\u7528\u4e86\u00a0http.createServer()\u3002<\/li>\n<\/ul>\n<\/li>\n
- Express \u63d0\u4f9b\u4e86\u66f4\u9ad8\u5c42\u6b21\u7684\u62bd\u8c61：\n
- \n
- Express \u7b80\u5316\u4e86\u8def\u7531\u3001\u4e2d\u95f4\u4ef6\u3001\u9519\u8bef\u5904\u7406\u7b49\u529f\u80fd\u7684\u5b9e\u73b0\u3002<\/li>\n
- \u5f00\u53d1\u8005\u53ef\u4ee5\u4e13\u6ce8\u4e8e\u4e1a\u52a1\u903b\u8f91，\u800c\u4e0d\u9700\u8981\u5173\u5fc3\u5e95\u5c42\u7684 HTTP \u7ec6\u8282\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
\u603b\u7ed3<\/h2>\n
\u8c03\u7528\u903b\u8f91：<\/p>\n
👀\u542f\u52a8HTTP\u670d\u52a1\u5668\u5e76\u76d1\u542c\u2192\u542f\u52a8express\u670d\u52a1\u5668\u3010\u5176\u4e2dapp.ues()\u52a0\u8f7d\u8def\u7531\u5904\u7406\u5668\u3011\u2192\u8def\u7531\u53ef\u4ee5\u7531\u81ea\u5df1\u914d\u7f6e\u8bbe\u5b9a<\/p>\n
\u90a3\u4e48\u6211\u73b0\u5728\u670d\u52a1\u5668\u542f\u52a8\u4e86，\u6211\u524d\u7aef（\u5ba2\u6237\u7aef）\u53d1\u6765\u7684\u6d88\u606f\u5df2\u7ecf\u53ef\u4ee5\u53d1\u9001\u5230\u6211\u7684\u670d\u52a1\u5668\u8fdb\u884c\u89e3\u6790，\u4f5c\u4e3a\u4e00\u540d\u5f00\u53d1\u8005\u53ef\u4ee5\u4e86\u89e3\u4e00\u4e0b\u8fd9\u4e9b\u5177\u4f53\u7684\u5b9e\u73b0\u539f\u7406\u548c\u5982\u4f55\u8c03\u7528\u7684\u8fc7\u7a0b（\u5982\u770b\u4e86\u8fd9\u7bc7\u6587\u7ae0\u53ef\u80fd\u5bf9\u4f60\u4fee\u6539\u7aef\u53e3\u7b49\u4e5f\u6709\u5e2e\u52a9），\u4f46\u662f\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u53ef\u4ee5\u4e4b\u95f4\u5728index\u79cd\u7f16\u5199\u8def\u7531\u5904\u7406\u7684\u903b\u8f91\u5373\u53ef\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/04\/20250418205726-6802bcb697168.png\")
<\/p>\n\u5728\u4f60\u7684index.js\u79cd\u7f16\u5199\u4f60\u7684\u540e\u7aef\u4ee3\u7801\u5c31\u597d\u4e86，\u5982\u679c\u4e0d\u4f1a\u53ef\u4ee5\u770b\u770b\u6211\u5f15\u7528\u7684\u90a3\u7bc7\u6587\u7ae0，\u91cc\u9762\u7684\u6b65\u9aa4\u5f88\u8be6\u7ec6<\/p>\n
\n \u521b\u5efanodejs\u7684\u670d\u52a1\u5668\u8fd9\u4e2a\u90fd\u6ca1\u5565\u5dee\u522b，\u90fd\u662f\u5728\u6587\u4ef6\u4e2d\u8fdb\u884c\u64cd\u4f5c\u5373\u53ef<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"
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