\n Express.js\ub294 Node.js\ub97c \uc704\ud55c \uc6f9 \ud504\ub808\uc784\uc6cc\ud06c\ub85c, RESTful API\ub97c \uc27d\uac8c \uad6c\ucd95\ud560 \uc218 \uc788\ub3c4\ub85d \ub3c4\uc640\uc900\ub2e4.
\n \ubcf8 \uac15\uc88c\uc5d0\uc11c\ub294 Express\ub85c \ubc31\uc5d4\ub4dc \uc11c\ubc84\ub97c \uac1c\ubc1c\ud558\uae30 \uc704\ud55c \ud504\ub85c\uc81d\ud2b8 \uad6c\uc870\uc640 \ud30c\uc77c \uad6c\uc131\uc744 \uae4a\uc774 \uc788\uac8c \uc54c\uc544\ubcf4\uaca0\ub2e4.
\n \ub610\ud55c \ucd5c\uc801\uc758 \uac1c\ubc1c \ud658\uacbd\uc744 \uc704\ud55c \uae30\ubcf8\uc801\uc778 \uc124\uc815 \ubc29\ubc95\uacfc \uc608\uc81c\ub97c \uc81c\uacf5\ud560 \uc608\uc815\uc774\ub2e4.\n <\/p>\n
\n Express.js\ub294 \uacbd\ub7c9\ud654\ub41c Node.js \uc6f9 \uc5b4\ud50c\ub9ac\ucf00\uc774\uc158 \ud504\ub808\uc784\uc6cc\ud06c\ub85c, \uc6f9 \uc11c\ubc84 \ubc0f API \uad6c\ucd95\uc744
\n \uc704\ud55c \ub2e4\uc591\ud55c \uae30\ub2a5\ub4e4\uc744 \uc81c\uacf5\ud55c\ub2e4. \uae30\ubcf8\uc801\uc73c\ub85c \ub77c\uc6b0\ud305, \ubbf8\ub4e4\uc6e8\uc5b4 \uc9c0\uc6d0, HTTP \uc694\uccad \ubc0f \uc751\ub2f5 \ucc98\ub9ac \ub4f1\uc744
\n \uc6a9\uc774\ud558\uac8c \ud560 \uc218 \uc788\ub3c4\ub85d \uc9c0\uc6d0\ud55c\ub2e4. Express\ub97c \uc0ac\uc6a9\ud558\uba74 \ub354\uc6b1 \ud6a8\uc728\uc801\uc73c\ub85c \uc6f9 \uc11c\ubc84\ub97c \uad6c\ucd95\ud560 \uc218 \uc788\ub2e4.\n <\/p>\n
\n Express \ud504\ub85c\uc81d\ud2b8\uc758 \uad6c\uc870\ub97c \uc81c\ub300\ub85c \uc774\ud574\ud558\uba74 \ucf54\ub4dc \uc720\uc9c0 \ubcf4\uc218\uc640 \ud655\uc7a5\uc131\uc774 \ud5a5\uc0c1\ub41c\ub2e4.
\n \uc5ec\uae30\uc11c\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \uc0ac\uc6a9\ud558\ub294 Express \ud504\ub85c\uc81d\ud2b8 \uad6c\uc870\ub97c \uc124\uba85\ud558\uaca0\ub2e4.
\n \uc544\ub798\uc758 \uad6c\uc870\ub294 \uae30\ubcf8\uc801\uc778 \ud30c\uc77c\uacfc \ud3f4\ub354\ub85c \uad6c\uc131\ub418\uc5b4 \uc788\ub2e4.\n <\/p>\n
\n \n \/my-express-app\n \u251c\u2500\u2500 node_modules\/\n \u251c\u2500\u2500 src\/\n \u2502 \u251c\u2500\u2500 controllers\/\n \u2502 \u251c\u2500\u2500 models\/\n \u2502 \u251c\u2500\u2500 routes\/\n \u2502 \u251c\u2500\u2500 middlewares\/\n \u2502 \u251c\u2500\u2500 config\/\n \u2502 \u2514\u2500\u2500 app.js\n \u251c\u2500\u2500 .env\n \u251c\u2500\u2500 .gitignore\n \u251c\u2500\u2500 package.json\n \u2514\u2500\u2500 README.md\n <\/code>\n <\/pre>\n3.1. root \ub514\ub809\ud1a0\ub9ac<\/h3>\n
\n \ubaa8\ub4e0 Express \ud504\ub85c\uc81d\ud2b8\ub294 \ucd5c\uc0c1\uc704 \ub514\ub809\ud130\ub9ac\uc5d0\uc11c \uc2dc\uc791\ud55c\ub2e4. \uc774 \ub514\ub809\ud130\ub9ac\uc5d0\ub294
\n \ud504\ub85c\uc81d\ud2b8\uc758 \uba54\ud0c0\ub370\uc774\ud130\uc640 \uc758\uc874\uc131\uc744 \uc815\uc758\ud558\ub294 package.json<\/code> \ud30c\uc77c\uc774 \ud3ec\ud568\ub41c\ub2e4.
\n node_modules<\/code> \ud3f4\ub354\ub294 \uc124\uce58\ub41c \ud328\ud0a4\uc9c0\ub97c \ud3ec\ud568\ud558\uba70,
\n .env<\/code> \ud30c\uc77c\uc740 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ud658\uacbd \ubcc0\uc218 \uc124\uc815\uc744 \uc704\ud55c \ud30c\uc77c\uc774\ub2e4.
\n .gitignore<\/code> \ud30c\uc77c\uc740 Git\uc5d0 \ud3ec\ud568\ud558\uc9c0 \uc54a\uc744 \ud30c\uc77c\ub4e4\uc744 \uc815\uc758\ud55c\ub2e4.\n <\/p>\n3.2. src \ud3f4\ub354<\/h3>\n
\nsrc<\/code> \ud3f4\ub354\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc2e4\uc81c \ucf54\ub4dc\uac00 \uc704\uce58\ud558\ub294 \uacf3\uc774\ub2e4.
\n \uc774 \ud3f4\ub354 \ub0b4\uc758 \uad6c\uc131 \uc694\uc18c\ub4e4\uc740 \ub2e4\uc74c\uacfc \uac19\ub2e4:\n <\/p>\n\n- \ncontrollers\/:<\/strong> \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc774 \ud3ec\ud568\ub41c \ud30c\uc77c\ub4e4\uc774 \uc704\uce58\ud55c\ub2e4.
\n \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc694\uccad\uc744 \ucc98\ub9ac\ud558\uace0, \ud544\uc694\ud55c \ub370\uc774\ud130\ub97c \uac00\uc838\uc624\uba70, \uc751\ub2f5\uc744 \ubc18\ud658\ud558\ub294 \uc5ed\ud560\uc744 \ud55c\ub2e4.\n <\/li>\n- \nmodels\/:<\/strong> \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc640\uc758 \uc0c1\ud638\uc791\uc6a9\uc744 \uc704\ud55c \ubaa8\ub378\ub4e4\uc774\ub2e4.
\n \uc77c\ubc18\uc801\uc73c\ub85c ORM(Object Relational Mapping) \ub77c\uc774\ube0c\ub7ec\ub9ac\uc640 \ud568\uaed8 \uc0ac\uc6a9\ub41c\ub2e4.\n <\/li>\n- \nroutes\/:<\/strong> HTTP \uc694\uccad\uc744 \ud2b9\uc815 \ucee8\ud2b8\ub864\ub7ec\ub85c \ub77c\uc6b0\ud305\ud558\ub294 \uc5ed\ud560\uc744 \ud55c\ub2e4.
\n \uac01 API \uc5d4\ub4dc\ud3ec\uc778\ud2b8\uc5d0 \ub300\ud55c \uacbd\ub85c\ub97c \uc815\uc758\ud55c\ub2e4.\n <\/li>\n- \nmiddlewares\/:<\/strong> \uc694\uccad\uacfc \uc751\ub2f5 \uc0ac\uc774\uc5d0 \uc2e4\ud589\ub418\ub294 \ud568\uc218\ub4e4\ub85c,
\n \uc778\uc99d, \ub85c\uae45, \uc5d0\ub7ec \ucc98\ub9ac \ub4f1\uc744 \uc704\ud55c \ubbf8\ub4e4\uc6e8\uc5b4\ub97c \ud3ec\ud568\ud55c\ub2e4.\n <\/li>\n- \nconfig\/:<\/strong> \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc124\uc815 \uc815\ubcf4\ub97c \uc800\uc7a5\ud558\ub294 \ud3f4\ub354\ub85c,
\n \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc5f0\uacb0 \uc815\ubcf4\ub098 \uc678\ubd80 \uc11c\ube44\uc2a4 API \ud0a4 \ub4f1\uc744 \ud3ec\ud568\ud560 \uc218 \uc788\ub2e4.\n <\/li>\n- \napp.js:<\/strong> \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \ucd08\uae30\ud654\ud558\uace0, \ub77c\uc6b0\ud130\ub97c \uc124\uc815\ud558\uba70,
\n \uc11c\ubc84\ub97c \uc2dc\uc791\ud558\ub294 \ub4f1 \ud575\uc2ec \uae30\ub2a5\uc744 \uad6c\ud604\ud558\ub294 \ud30c\uc77c\uc774\ub2e4.\n <\/li>\n<\/ul>\n4. Express \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \uc0dd\uc131\ud558\uae30<\/h2>\n
\n \uc774\uc81c \uc2e4\uc81c Express \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc0dd\uc131\ud574 \ubcf4\uaca0\ub2e4.
\n \uc544\ub798 \ub2e8\uacc4\uc5d0 \ub530\ub77c \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc124\uc815\ud558\uace0, \ud30c\uc77c \uad6c\uc870\ub97c \uad6c\uc131\ud560 \uac83\uc774\ub2e4.\n <\/p>\n
4.1. \ud504\ub85c\uc81d\ud2b8 \ucd08\uae30\ud654<\/h3>\n\n \n mkdir my-express-app\n cd my-express-app\n npm init -y\n <\/code>\n <\/pre>\n\uc704 \uba85\ub839\uc5b4\ub97c \ud1b5\ud574 \uc0c8\ub85c\uc6b4 \ub514\ub809\ud1a0\ub9ac\ub97c \uc0dd\uc131\ud558\uace0, Node.js \ud504\ub85c\uc81d\ud2b8\ub97c \ucd08\uae30\ud654\ud55c\ub2e4.<\/p>\n
4.2. Express \uc124\uce58<\/h3>\n\n \n npm install express\n <\/code>\n <\/pre>\nExpress \ud328\ud0a4\uc9c0\ub97c \uc124\uce58\ud55c\ub2e4.<\/p>\n
4.3. \uae30\ubcf8 \uc11c\ubc84 \uc124\uc815\ud558\uae30<\/h3>\n
\nsrc\/app.js<\/code> \ud30c\uc77c\uc744 \uc0dd\uc131\ud558\uace0 \uae30\ubcf8 \uc11c\ubc84 \ucf54\ub4dc\ub97c \uc791\uc131\ud574 \ubcf4\uc790.\n <\/p>\n\n \n const express = require('express');\n const app = express();\n const PORT = process.env.PORT || 3000;\n\n app.get('\/', (req, res) => {\n res.send('Hello, Express!');\n });\n\n app.listen(PORT, () => {\n console.log(`Server is running on http:\/\/localhost:${PORT}`);\n });\n <\/code>\n <\/pre>\n4.4. \uc11c\ubc84 \uc2e4\ud589<\/h3>\n
\n \uc11c\ubc84\ub97c \uc2e4\ud589\ud558\uae30 \uc704\ud574 \uc544\ub798 \uba85\ub839\uc5b4\ub97c \uc0ac\uc6a9\ud55c\ub2e4.\n <\/p>\n
\n \n node src\/app.js\n <\/code>\n <\/pre>\n\ube0c\ub77c\uc6b0\uc800\uc5d0\uc11c http:\/\/localhost:3000<\/code>\uc5d0 \uc811\uadfc\ud558\uc5ec “Hello, Express!” \uba54\uc2dc\uc9c0\ub97c \ud655\uc778\ud560 \uc218 \uc788\ub2e4.<\/p>\n5. \ub77c\uc6b0\ud305 \uad6c\ud604\ud558\uae30<\/h2>\n
\n Express\uc758 \ub77c\uc6b0\ud305 \uae30\ub2a5\uc744 \uc0ac\uc6a9\ud558\uc5ec API \uc5d4\ub4dc\ud3ec\uc778\ud2b8\ub97c \ucd94\uac00\ud558\uaca0\ub2e4.
\n routes<\/code> \ud3f4\ub354\ub97c \uc0dd\uc131\ud558\uace0 userRoutes.js<\/code> \ud30c\uc77c\uc744 \ub9cc\ub4e4\uc5b4 \uc0ac\uc6a9\uc790 \uad00\ub828 \ub77c\uc6b0\ud305\uc744 \uc791\uc131\ud574 \ubcf4\uc790.\n <\/p>\n\n \n \/\/ src\/routes\/userRoutes.js\n const express = require('express');\n const router = express.Router();\n\n \/\/ \uc0ac\uc6a9\uc790 \ubaa9\ub85d \uc870\ud68c\n router.get('\/users', (req, res) => {\n res.json([{ id: 1, name: 'John' }, { id: 2, name: 'Jane' }]);\n });\n\n \/\/ \uc0ac\uc6a9\uc790 \ucd94\uac00\n router.post('\/users', (req, res) => {\n \/\/ \uc0ac\uc6a9\uc790 \ucd94\uac00 \ub85c\uc9c1 \uad6c\ud604\n res.status(201).json({ id: 3, name: req.body.name });\n });\n\n module.exports = router;\n <\/code>\n <\/pre>\n5.1. \ub77c\uc6b0\ud130 \uc5f0\uacb0\ud558\uae30<\/h3>\n
\napp.js<\/code> \ud30c\uc77c\uc5d0\uc11c userRoutes<\/code>\ub97c import \ud558\uace0,
\n \uc774\ub97c Express \uc571\uc5d0 \uc5f0\uacb0\ud558\uc790.\n <\/p>\n\n \n const express = require('express');\n const app = express();\n const userRoutes = require('.\/routes\/userRoutes');\n\n app.use(express.json()); \/\/ JSON \uc694\uccad \ubcf8\ubb38 \ud30c\uc2f1\n app.use('\/api', userRoutes); \/\/ '\/api' \uacbd\ub85c\ub85c \ub77c\uc6b0\ud130 \uc5f0\uacb0\n\n const PORT = process.env.PORT || 3000;\n\n app.listen(PORT, () => {\n console.log(`Server is running on http:\/\/localhost:${PORT}`);\n });\n <\/code>\n <\/pre>\n5.2. API \ud14c\uc2a4\ud2b8\ud558\uae30<\/h3>\n
\n Postman \ub610\ub294 curl\uc744 \uc0ac\uc6a9\ud558\uc5ec API\ub97c \ud14c\uc2a4\ud2b8\ud560 \uc218 \uc788\ub2e4.
\n GET \/api\/users<\/code> \uc694\uccad\uc744 \ubcf4\ub0b4\uba74, \uc0ac\uc6a9\uc790 \ubaa9\ub85d\uc744 \ud655\uc778\ud560 \uc218 \uc788\uc744 \uac83\uc774\ub2e4.\n <\/p>\n6. \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1 \ubd84\ub9ac\ud558\uae30<\/h2>\n
\n \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uc744 \ucee8\ud2b8\ub864\ub7ec\ub85c \ubd84\ub9ac\ud558\uc5ec \ucf54\ub4dc\ub97c \ub354 \uae54\ub054\ud558\uace0 \uc720\uc9c0\ubcf4\uc218\ud558\uae30 \uc27d\uac8c \ub9cc\ub4e4\uc790.
\n controllers<\/code> \ud3f4\ub354\ub97c \uc0dd\uc131\ud558\uace0 userController.js<\/code> \ud30c\uc77c\uc744 \ucd94\uac00\ud558\uc790.\n <\/p>\n\n \n \/\/ src\/controllers\/userController.js\n exports.getUsers = (req, res) => {\n res.json([{ id: 1, name: 'John' }, { id: 2, name: 'Jane' }]);\n };\n\n exports.addUser = (req, res) => {\n res.status(201).json({ id: 3, name: req.body.name });\n };\n <\/code>\n <\/pre>\n6.1. \ucee8\ud2b8\ub864\ub7ec\uc640 \ub77c\uc6b0\ud130 \uc5f0\uacb0\ud558\uae30<\/h3>\n
\nuserRoutes.js<\/code>\uc5d0\uc11c \ub77c\uc6b0\ud130\ub97c \uc218\uc815\ud558\uc5ec \ucee8\ud2b8\ub864\ub7ec\ub97c \uc0ac\uc6a9\ud55c\ub2e4.\n <\/p>\n\n \n const express = require('express');\n const router = express.Router();\n const userController = require('..\/controllers\/userController');\n\n router.get('\/users', userController.getUsers);\n router.post('\/users', userController.addUser);\n\n module.exports = router;\n <\/code>\n <\/pre>\n7. \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc5f0\uacb0\ud558\uae30<\/h2>\n
\n \uc774\uc81c MongoDB\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc640 \uc5f0\uacb0\ud558\ub294 \ubc29\ubc95\uc744 \uc0b4\ud3b4\ubcf4\uaca0\ub2e4.
\n mongoose<\/code> \ud328\ud0a4\uc9c0\ub97c \uc124\uce58\ud558\uace0, \uac04\ub2e8\ud55c \uac8c\uc2dc\ud310 \uc608\uc81c\ub97c \uad6c\ud604\ud574\ubcf4\uc790.\n <\/p>\n\n \n npm install mongoose\n <\/code>\n <\/pre>\n7.1. \ubaa8\ub378 \uc815\uc758\ud558\uae30<\/h3>\n
\nmodels<\/code> \ud3f4\ub354\ub97c \uc0dd\uc131\ud558\uace0 User.js<\/code> \ud30c\uc77c\uc744 \ub9cc\ub4e4\uc5b4
\n \uc0ac\uc6a9\uc790 \ubaa8\ub378\uc744 \uc815\uc758\ud558\uc790.\n <\/p>\n\n \n \/\/ src\/models\/User.js\n const mongoose = require('mongoose');\n\n const userSchema = new mongoose.Schema({\n name: {\n type: String,\n required: true\n }\n });\n\n module.exports = mongoose.model('User', userSchema);\n <\/code>\n <\/pre>\n7.2. \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc5f0\uacb0 \uc124\uc815\ud558\uae30<\/h3>\n\n \n const mongoose = require('mongoose');\n const express = require('express');\n const userRoutes = require('.\/routes\/userRoutes');\n\n const app = express();\n mongoose.connect(process.env.MONGODB_URI, { useNewUrlParser: true, useUnifiedTopology: true })\n .then(() => console.log('MongoDB Connected'))\n .catch(err => console.error('MongoDB connection error:', err));\n\n app.use(express.json());\n app.use('\/api', userRoutes);\n \/\/ ...\n <\/code>\n <\/pre>\n7.3. \uc0ac\uc6a9\uc790 \ucd94\uac00 \uae30\ub2a5 \uc218\uc815\ud558\uae30<\/h3>\n
\n \uc0ac\uc6a9\uc790\ub97c \ucd94\uac00\ud560 \ub54c \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \uae30\ub85d\ud558\ub3c4\ub85d \uae30\ub2a5\uc744 \uc218\uc815\ud558\uc790.\n <\/p>\n
\n \n \/\/ src\/controllers\/userController.js\n const User = require('..\/models\/User');\n\n exports.addUser = async (req, res) => {\n try {\n const newUser = new User({ name: req.body.name });\n await newUser.save();\n res.status(201).json(newUser);\n } catch (error) {\n res.status(500).json({ message: error.message });\n }\n };\n <\/code>\n <\/pre>\n8. \uacb0\ub860<\/h2>\n
\n \uc774\ubc88 \uac15\uc88c\ub97c \ud1b5\ud574 Express.js \ud504\ub85c\uc81d\ud2b8\uc758 \uad6c\uc870\uc640 \ud30c\uc77c \uad6c\uc131\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uc558\ub2e4.
\n Express\ub97c \uae30\ubc18\uc73c\ub85c \ud55c \ubc31\uc5d4\ub4dc \uc11c\ubc84\ub97c \uac04\ub2e8\ud558\uac8c \uad6c\ud604\ud574 \ubcf4\uc558\uace0, \ube44\uc988\ub2c8\uc2a4 \ub85c\uc9c1\uacfc \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc5f0\uacb0\uc744
\n \ud1b5\ud574 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uae30\ub2a5\uc744 \ud655\uc7a5\ud558\ub294 \ubc29\ubc95\uc744 \ubc30\uc6e0\ub2e4.
\n \uc774\ub7ec\ud55c \uae30\ucd08 \uc9c0\uc2dd\uc744 \ubc14\ud0d5\uc73c\ub85c \ub354 \ubcf5\uc7a1\ud55c \uc6f9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc73c\ub85c \ubc1c\uc804\uc2dc\ud0ac \uc218 \uc788\uc744 \uac83\uc774\ub2e4.\n <\/p>\n
\ucd94\uac00 \uc790\ub8cc<\/h4>\n