Express.js\ub294 Node.js \uae30\ubc18\uc758 \uc6f9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158 \ud504\ub808\uc784\uc6cc\ud06c\ub85c, \uc6f9 \uc11c\ubc84 \ubc0f API\ub97c \uc2e0\uc18d\ud558\uac8c \uac1c\ubc1c\ud560 \uc218 \uc788\ub3c4\ub85d \ub3c4\uc640\uc90d\ub2c8\ub2e4. Express\uc758 \uac00\uc7a5 \ud070 \uc7a5\uc810 \uc911 \ud558\ub098\ub294 \ubc14\ub85c \u2018\ubbf8\ub4e4\uc6e8\uc5b4\u2019 \uac1c\ub150\uc5d0 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\uc5d0\uc11c\ub294 \ubbf8\ub4e4\uc6e8\uc5b4\uc758 \uc815\uc758, \ud544\uc694\uc131, \uc0ac\uc6a9 \ubc29\ubc95 \ubc0f \uac04\ub2e8\ud55c \uc608\uc81c\ub97c \ud1b5\ud574 \uc774\ud574\ub97c \ub3d5\ub3c4\ub85d \ud558\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
\ubbf8\ub4e4\uc6e8\uc5b4\ub294 Express \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c \uc694\uccad\uacfc \uc751\ub2f5 \uc0ac\uc774\uc5d0 \uc704\uce58\ud55c \ud568\uc218\uc758 \uc9d1\ud569\uc785\ub2c8\ub2e4. \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc694\uccad\uc774 \uc11c\ubc84\uc5d0 \ub3c4\ub2ec\ud588\uc744 \ub54c, \uc694\uccad \uac1d\uccb4(req), \uc751\ub2f5 \uac1d\uccb4(res), \uadf8\ub9ac\uace0 \ub2e4\uc74c \ubbf8\ub4e4\uc6e8\uc5b4 \ud568\uc218(next)\ub97c \uc778\uc218\ub85c \ubc1b\uc544\ub4e4\uc785\ub2c8\ub2e4. \ubbf8\ub4e4\uc6e8\uc5b4\ub294 \ud2b9\uc815 \uc791\uc5c5\uc744 \uc218\ud589\ud55c \ud6c4, \ub2e4\uc74c \ubbf8\ub4e4\uc6e8\uc5b4\ub85c \uc694\uccad\uc744 \uc804\ub2ec\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc608\ub97c \ub4e4\uc5b4, \uc778\uc99d, \ub85c\uae45, \ub370\uc774\ud130 \ud30c\uc2f1, \uc5d0\ub7ec \ucc98\ub9ac \ub4f1\uacfc \uac19\uc740 \ub2e4\uc591\ud55c \uae30\ub2a5\uc744 \ubbf8\ub4e4\uc6e8\uc5b4\ub97c \ud1b5\ud574 \uc190\uc27d\uac8c \uad6c\ud604\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\ubbf8\ub4e4\uc6e8\uc5b4\ub294 \uc694\uccad \ucc98\ub9ac\uc758 \ud30c\uc774\ud504\ub77c\uc778\uc744 \ud615\uc131\ud569\ub2c8\ub2e4. \ud074\ub77c\uc774\uc5b8\ud2b8\uc758 \uc694\uccad\uc774 \ub4e4\uc5b4\uc624\uba74, Express\ub294 \ub4f1\ub85d\ub41c \ubbf8\ub4e4\uc6e8\uc5b4\ub97c \uc21c\uc11c\ub300\ub85c \uc2e4\ud589\ud569\ub2c8\ub2e4. \uc774 \ub54c, \ubbf8\ub4e4\uc6e8\uc5b4\ub294 \ub2e4\uc74c \ubbf8\ub4e4\uc6e8\uc5b4\ub97c \ud638\ucd9c\ud560 \uc218 \uc788\uac8c \ud574\uc8fc\ub294 next() \ud568\uc218\ub97c \uac00\uc9c0\uace0 \uc788\uc73c\uba70, \uc774\ub97c \ud638\ucd9c\ud558\uc9c0 \uc54a\uc73c\uba74 \uc694\uccad \ucc98\ub9ac\uac00 \uc911\ub2e8\ub429\ub2c8\ub2e4.<\/p>\n
\ubbf8\ub4e4\uc6e8\uc5b4\ub294 \uc6f9 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \uc694\uccad \ucc98\ub9ac\ub97c \uad6c\uc870\ud654\ud558\uace0, \ucf54\ub4dc\uc758 \uc7ac\uc0ac\uc6a9\uc131\uc744 \ub192\uc774\uba70, \uc720\uc9c0\ubcf4\uc218\ub97c \uc6a9\uc774\ud558\uac8c \ub9cc\ub4e4\uc5b4\uc90d\ub2c8\ub2e4. \ub9ce\uc740 \uae30\ub2a5\uc744 \ubaa8\ub4c8\ud654\ud558\uc5ec \uad00\ub9ac\ud560 \uc218 \uc788\uae30 \ub54c\ubb38\uc5d0, \ub300\uaddc\ubaa8 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc5d0\uc11c\ub3c4 \uc77c\uad00\ub41c \ubc29\uc2dd\uc73c\ub85c \uc694\uccad\uc744 \ucc98\ub9ac\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\ubbf8\ub4e4\uc6e8\uc5b4\ub97c \uc0ac\uc6a9\ud558\uba74 \uae30\ub2a5\uc744 \ubaa8\ub4c8\ud654 \ud560 \uc218 \uc788\uc5b4 \uac01 \ubbf8\ub4e4\uc6e8\uc5b4\uac00 \ud2b9\uc815 \ucc45\uc784\uc744 \uac00\uc9c0\uace0 \uc791\ub3d9\ud558\uac8c \ub429\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc778\uc99d \ubbf8\ub4e4\uc6e8\uc5b4\ub294 \uc694\uccad\uc774 \ub4e4\uc5b4\uc62c \ub54c\ub9c8\ub2e4 \uc778\uc99d\uc744 \uac80\uc0ac\ud558\uace0, \ub85c\uae45 \ubbf8\ub4e4\uc6e8\uc5b4\ub294 \uac01 \uc694\uccad\uc758 \uc138\ubd80\uc0ac\ud56d\uc744 \ub85c\uadf8\uc5d0 \uae30\ub85d\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubd84\ub9ac\ub294 \ucf54\ub4dc\ub97c \uc774\ud574\ud558\uae30 \uc27d\uac8c \ud558\uace0, \ud14c\uc2a4\ud2b8 \ubaa8\ub4c8\ud654 \ubc0f \uc7ac\uc0ac\uc6a9\uc744 \ub192\uc785\ub2c8\ub2e4.<\/p>\n
\ubbf8\ub4e4\uc6e8\uc5b4\ub294 \uc694\uccad\uacfc \uc751\ub2f5\uc758 \uc911\uac04 \ub2e8\uacc4\uc5d0\uc11c \ucd94\uac00 \ucc98\ub9ac\ub97c \uac00\ub2a5\ud558\uac8c \ud574\uc90d\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc0ac\uc6a9\uc790\uc758 \uc778\uc99d \uc0c1\ud0dc\uc5d0 \ub530\ub77c \uc694\uccad\uc744 \ub9ac\ub2e4\uc774\ub809\ud2b8\ud558\uac70\ub098, \uc694\uccad \ub370\uc774\ud130\ub97c \uac80\uc99d\ud558\uc5ec \uc798\ubabb\ub41c \ub370\uc774\ud130\uc5d0 \ub300\ud55c \uc5d0\ub7ec\ub97c \ubc18\ud658\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\ubbf8\ub4e4\uc6e8\uc5b4 \uc124\uc815\uc740 \ub9e4\uc6b0 \uac04\ub2e8\ud569\ub2c8\ub2e4. Express \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc744 \uc0dd\uc131\ud558\uace0, app.use() \uba54\uc11c\ub4dc\ub97c \uc0ac\uc6a9\ud558\uc5ec \ubbf8\ub4e4\uc6e8\uc5b4\ub97c \ucd94\uac00\ud558\uba74 \ub429\ub2c8\ub2e4.<\/p>\n
const express = require('express');\nconst app = express();\n\n\/\/ \uc77c\ubc18\uc801\uc778 \ubbf8\ub4e4\uc6e8\uc5b4 \uc608\uc81c\napp.use((req, res, next) => {\n console.log(`${req.method} \uc694\uccad\uc744 \ubc1b\uc558\uc2b5\ub2c8\ub2e4: ${req.url}`);\n next(); \/\/ \ub2e4\uc74c \ubbf8\ub4e4\uc6e8\uc5b4\ub85c \ub118\uae40\n});\n\napp.get('\/', (req, res) => {\n res.send('\uc548\ub155\ud558\uc138\uc694, Express!');\n});\n\napp.listen(3000, () => {\n console.log('\uc11c\ubc84\uac00 3000\ud3ec\ud2b8\uc5d0\uc11c \uc2e4\ud589 \uc911\uc785\ub2c8\ub2e4.');\n});\n<\/code><\/pre>\n3.2. \ub77c\uc6b0\ud130 \ubbf8\ub4e4\uc6e8\uc5b4 \uc0ac\uc6a9\ud558\uae30<\/h3>\nconst express = require('express');\nconst app = express();\nconst router = express.Router();\n\n\/\/ \ub77c\uc6b0\ud130 \ubbf8\ub4e4\uc6e8\uc5b4\nrouter.get('\/user', (req, res) => {\n res.send('\uc0ac\uc6a9\uc790 \uc815\ubcf4');\n});\n\napp.use('\/api', router); \/\/ API \uacbd\ub85c\uc5d0 \ubbf8\ub4e4\uc6e8\uc5b4 \uc801\uc6a9\n\napp.listen(3000, () => {\n console.log('\uc11c\ubc84\uac00 3000\ud3ec\ud2b8\uc5d0\uc11c \uc2e4\ud589 \uc911\uc785\ub2c8\ub2e4.');\n});\n<\/code><\/pre>\n3.3. \uc81c3\uc790 \ubbf8\ub4e4\uc6e8\uc5b4 \uc0ac\uc6a9\ud558\uae30<\/h3>\n
\uc81c3\uc790 \ubbf8\ub4e4\uc6e8\uc5b4\ub97c \uc0ac\uc6a9\ud558\ub824\uba74 npm\uc744 \ud1b5\ud574 \ud574\ub2f9 \ubbf8\ub4e4\uc6e8\uc5b4\ub97c \uc124\uce58\ud558\uace0, \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
npm install morgan\n<\/code><\/pre>\nconst express = require('express');\nconst morgan = require('morgan');\n\nconst app = express();\n\n\/\/ morgan \ubbf8\ub4e4\uc6e8\uc5b4 \ub4f1\ub85d\napp.use(morgan('dev'));\n\napp.get('\/', (req, res) => {\n res.send('Morgan \ub85c\uae45\uc744 \uc0ac\uc6a9\ud558\ub294 \uc11c\ubc84');\n});\n\napp.listen(3000, () => {\n console.log('\uc11c\ubc84\uac00 3000\ud3ec\ud2b8\uc5d0\uc11c \uc2e4\ud589 \uc911\uc785\ub2c8\ub2e4.');\n});\n<\/code><\/pre>\n4. \uc5d0\ub7ec \ud578\ub4e4\ub9c1 \ubbf8\ub4e4\uc6e8\uc5b4<\/h2>\n
Express\uc5d0\uc11c \uc5d0\ub7ec \ucc98\ub9ac \ub610\ud55c \ubbf8\ub4e4\uc6e8\uc5b4\ub97c \ud1b5\ud574 \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5d0\ub7ec \ud578\ub4e4\ub9c1 \ubbf8\ub4e4\uc6e8\uc5b4\ub294 \uc77c\ubc18 \ubbf8\ub4e4\uc6e8\uc5b4\uc640 \ub2e4\ub974\uac8c \ub124 \uac1c\uc758 \uc778\uc218\ub97c \uc0ac\uc6a9\ud569\ub2c8\ub2e4: (err, req, res, next). \uc774 \ubbf8\ub4e4\uc6e8\uc5b4\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ub9c8\uc9c0\ub9c9\uc5d0 \ub4f1\ub85d\ub418\uc5b4\uc57c \ud558\uba70, \ubc1c\uc0dd\ud55c \uc5d0\ub7ec\ub97c \ucc98\ub9ac\ud558\ub294 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n
app.use((err, req, res, next) => {\n console.error(err.stack);\n res.status(500).send('\uc11c\ubc84\uc5d0\uc11c \uc5d0\ub7ec\uac00 \ubc1c\uc0dd\ud588\uc2b5\ub2c8\ub2e4!');\n});\n<\/code><\/pre>\n5. \uacb0\ub860<\/h2>\n
Express\uc5d0\uc11c \ubbf8\ub4e4\uc6e8\uc5b4\ub294 \uc560\ud50c\ub9ac\ucf00\uc774\uc158\uc758 \ud575\uc2ec\uc801\uc778 \uc694\uc18c\ub85c, \uc694\uccad\uacfc \uc751\ub2f5 \ucc98\ub9ac, \ucf54\ub4dc \uc7ac\uc0ac\uc6a9\uc131 \ubc0f \uc720\uc9c0\ubcf4\uc218\uc131\uc744 \uc99d\ub300\uc2dc\ud0a4\ub294 \ub370 \ud070 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \uc774\ubc88 \uac15\uc88c\ub97c \ud1b5\ud574 \ubbf8\ub4e4\uc6e8\uc5b4\uc758 \uac1c\ub150\uacfc \ud544\uc694\uc131\uc744 \uc774\ud574\ud558\uace0, \uae30\ubcf8\uc801\uc778 \uc0ac\uc6a9\ubc95\uc744 \uc775\ud788\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub418\uc5c8\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4. \ubbf8\ub4e4\uc6e8\uc5b4\ub97c \uc798 \ud65c\uc6a9\ud558\uc5ec \ud6a8\uc728\uc801\uc774\uace0 \uacac\uace0\ud55c \ubc31\uc5d4\ub4dc \uc11c\ubc84 \uac1c\ubc1c\uc5d0 \ub3c4\uc804\ud574 \ubcf4\uc2dc\uae30 \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n
<\/body><\/p>\n","protected":false},"excerpt":{"rendered":"