Node.js day2:get请求的参数处理

19_Node.js/Koa快速入门.md

@@ -95,3 +95,5 @@ router
 export default router;
 ```
 
+### 3.4 Get请求方法
+

19_Node.js/day-3/code/koa-app/app.config.js

@@ -0,0 +1,5 @@
+export default {
+  port: 4000,
+  host: '0.0.0.0',
+  public: 'public',
+};

19_Node.js/day-3/code/koa-app/index.js

@@ -0,0 +1,17 @@
+import Koa from 'koa';
+import serve from 'koa-static';
+import config from './app.config.js';
+import router from './router/index.mjs';
+
+const app = new Koa();
+// 托管静态文件
+app.use(serve(config.public));
+
+// 添加路由
+app.use(router.routes());
+// 在options请求下响应支持的请求方法
+app.use(router.allowedMethods());
+
+app.listen(config.port, config.host, () => {
+  console.info(`服务已启动，地址为：'http://${config.host}:${config.port}'.`);
+});

19_Node.js/day-3/code/koa-app/package-lock.json

@@ -0,0 +1,613 @@
+{
+  "name": "koa-app",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "koa-app",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "@koa/router": "^12.0.0",
+        "koa": "^2.14.2",
+        "koa-static": "^5.0.0"
+      }
+    },
+    "node_modules/@koa/router": {
+      "version": "12.0.0",
+      "resolved": "https://registry.npmmirror.com/@koa/router/-/router-12.0.0.tgz",
+      "integrity": "sha512-cnnxeKHXlt7XARJptflGURdJaO+ITpNkOHmQu7NHmCoRinPbyvFzce/EG/E8Zy81yQ1W9MoSdtklc3nyaDReUw==",
+      "dependencies": {
+        "http-errors": "^2.0.0",
+        "koa-compose": "^4.1.0",
+        "methods": "^1.1.2",
+        "path-to-regexp": "^6.2.1"
+      },
+      "engines": {
+        "node": ">= 12"
+      }
+    },
+    "node_modules/accepts": {
+      "version": "1.3.8",
+      "resolved": "https://registry.npmmirror.com/accepts/-/accepts-1.3.8.tgz",
+      "integrity": "sha512-PYAthTa2m2VKxuvSD3DPC/Gy+U+sOA1LAuT8mkmRuvw+NACSaeXEQ+NHcVF7rONl6qcaxV3Uuemwawk+7+SJLw==",
+      "dependencies": {
+        "mime-types": "~2.1.34",
+        "negotiator": "0.6.3"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/cache-content-type": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmmirror.com/cache-content-type/-/cache-content-type-1.0.1.tgz",
+      "integrity": "sha512-IKufZ1o4Ut42YUrZSo8+qnMTrFuKkvyoLXUywKz9GJ5BrhOFGhLdkx9sG4KAnVvbY6kEcSFjLQul+DVmBm2bgA==",
+      "dependencies": {
+        "mime-types": "^2.1.18",
+        "ylru": "^1.2.0"
+      },
+      "engines": {
+        "node": ">= 6.0.0"
+      }
+    },
+    "node_modules/co": {
+      "version": "4.6.0",
+      "resolved": "https://registry.npmmirror.com/co/-/co-4.6.0.tgz",
+      "integrity": "sha512-QVb0dM5HvG+uaxitm8wONl7jltx8dqhfU33DcqtOZcLSVIKSDDLDi7+0LbAKiyI8hD9u42m2YxXSkMGWThaecQ==",
+      "engines": {
+        "iojs": ">= 1.0.0",
+        "node": ">= 0.12.0"
+      }
+    },
+    "node_modules/content-disposition": {
+      "version": "0.5.4",
+      "resolved": "https://registry.npmmirror.com/content-disposition/-/content-disposition-0.5.4.tgz",
+      "integrity": "sha512-FveZTNuGw04cxlAiWbzi6zTAL/lhehaWbTtgluJh4/E95DqMwTmha3KZN1aAWA8cFIhHzMZUvLevkw5Rqk+tSQ==",
+      "dependencies": {
+        "safe-buffer": "5.2.1"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/content-type": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmmirror.com/content-type/-/content-type-1.0.5.tgz",
+      "integrity": "sha512-nTjqfcBFEipKdXCv4YDQWCfmcLZKm81ldF0pAopTvyrFGVbcR6P/VAAd5G7N+0tTr8QqiU0tFadD6FK4NtJwOA==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/cookies": {
+      "version": "0.8.0",
+      "resolved": "https://registry.npmmirror.com/cookies/-/cookies-0.8.0.tgz",
+      "integrity": "sha512-8aPsApQfebXnuI+537McwYsDtjVxGm8gTIzQI3FDW6t5t/DAhERxtnbEPN/8RX+uZthoz4eCOgloXaE5cYyNow==",
+      "dependencies": {
+        "depd": "~2.0.0",
+        "keygrip": "~1.1.0"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/debug": {
+      "version": "4.3.4",
+      "resolved": "https://registry.npmmirror.com/debug/-/debug-4.3.4.tgz",
+      "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/deep-equal": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmmirror.com/deep-equal/-/deep-equal-1.0.1.tgz",
+      "integrity": "sha512-bHtC0iYvWhyaTzvV3CZgPeZQqCOBGyGsVV7v4eevpdkLHfiSrXUdBG+qAuSz4RI70sszvjQ1QSZ98An1yNwpSw=="
+    },
+    "node_modules/delegates": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmmirror.com/delegates/-/delegates-1.0.0.tgz",
+      "integrity": "sha512-bd2L678uiWATM6m5Z1VzNCErI3jiGzt6HGY8OVICs40JQq/HALfbyNJmp0UDakEY4pMMaN0Ly5om/B1VI/+xfQ=="
+    },
+    "node_modules/depd": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmmirror.com/depd/-/depd-2.0.0.tgz",
+      "integrity": "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/destroy": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmmirror.com/destroy/-/destroy-1.2.0.tgz",
+      "integrity": "sha512-2sJGJTaXIIaR1w4iJSNoN0hnMY7Gpc/n8D4qSCJw8QqFWXf7cuAgnEHxBpweaVcPevC2l3KpjYCx3NypQQgaJg==",
+      "engines": {
+        "node": ">= 0.8",
+        "npm": "1.2.8000 || >= 1.4.16"
+      }
+    },
+    "node_modules/ee-first": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmmirror.com/ee-first/-/ee-first-1.1.1.tgz",
+      "integrity": "sha512-WMwm9LhRUo+WUaRN+vRuETqG89IgZphVSNkdFgeb6sS/E4OrDIN7t48CAewSHXc6C8lefD8KKfr5vY61brQlow=="
+    },
+    "node_modules/encodeurl": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmmirror.com/encodeurl/-/encodeurl-1.0.2.tgz",
+      "integrity": "sha512-TPJXq8JqFaVYm2CWmPvnP2Iyo4ZSM7/QKcSmuMLDObfpH5fi7RUGmd/rTDf+rut/saiDiQEeVTNgAmJEdAOx0w==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/escape-html": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmmirror.com/escape-html/-/escape-html-1.0.3.tgz",
+      "integrity": "sha512-NiSupZ4OeuGwr68lGIeym/ksIZMJodUGOSCZ/FSnTxcrekbvqrgdUxlJOMpijaKZVjAJrWrGs/6Jy8OMuyj9ow=="
+    },
+    "node_modules/fresh": {
+      "version": "0.5.2",
+      "resolved": "https://registry.npmmirror.com/fresh/-/fresh-0.5.2.tgz",
+      "integrity": "sha512-zJ2mQYM18rEFOudeV4GShTGIQ7RbzA7ozbU9I/XBpm7kqgMywgmylMwXHxZJmkVoYkna9d2pVXVXPdYTP9ej8Q==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/has-symbols": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmmirror.com/has-symbols/-/has-symbols-1.0.3.tgz",
+      "integrity": "sha512-l3LCuF6MgDNwTDKkdYGEihYjt5pRPbEg46rtlmnSPlUbgmB8LOIrKJbYYFBSbnPaJexMKtiPO8hmeRjRz2Td+A==",
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
+    "node_modules/has-tostringtag": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmmirror.com/has-tostringtag/-/has-tostringtag-1.0.0.tgz",
+      "integrity": "sha512-kFjcSNhnlGV1kyoGk7OXKSawH5JOb/LzUc5w9B02hOTO0dfFRjbHQKvg1d6cf3HbeUmtU9VbbV3qzZ2Teh97WQ==",
+      "dependencies": {
+        "has-symbols": "^1.0.2"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
+    "node_modules/http-assert": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmmirror.com/http-assert/-/http-assert-1.5.0.tgz",
+      "integrity": "sha512-uPpH7OKX4H25hBmU6G1jWNaqJGpTXxey+YOUizJUAgu0AjLUeC8D73hTrhvDS5D+GJN1DN1+hhc/eF/wpxtp0w==",
+      "dependencies": {
+        "deep-equal": "~1.0.1",
+        "http-errors": "~1.8.0"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/http-assert/node_modules/depd": {
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+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/http-assert/node_modules/http-errors": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmmirror.com/http-errors/-/http-errors-1.8.1.tgz",
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+        "inherits": "2.0.4",
+        "setprototypeof": "1.2.0",
+        "statuses": ">= 1.5.0 < 2",
+        "toidentifier": "1.0.1"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/http-assert/node_modules/statuses": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmmirror.com/statuses/-/statuses-1.5.0.tgz",
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+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/http-errors": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmmirror.com/http-errors/-/http-errors-2.0.0.tgz",
+      "integrity": "sha512-FtwrG/euBzaEjYeRqOgly7G0qviiXoJWnvEH2Z1plBdXgbyjv34pHTSb9zoeHMyDy33+DWy5Wt9Wo+TURtOYSQ==",
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+        "inherits": "2.0.4",
+        "setprototypeof": "1.2.0",
+        "statuses": "2.0.1",
+        "toidentifier": "1.0.1"
+      },
+      "engines": {
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+      }
+    },
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+    },
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+      "version": "1.0.10",
+      "resolved": "https://registry.npmmirror.com/is-generator-function/-/is-generator-function-1.0.10.tgz",
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+      "dependencies": {
+        "has-tostringtag": "^1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      }
+    },
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+        "tsscmp": "1.0.6"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/koa": {
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+      "resolved": "https://registry.npmmirror.com/koa/-/koa-2.14.2.tgz",
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+      "dependencies": {
+        "accepts": "^1.3.5",
+        "cache-content-type": "^1.0.0",
+        "content-disposition": "~0.5.2",
+        "content-type": "^1.0.4",
+        "cookies": "~0.8.0",
+        "debug": "^4.3.2",
+        "delegates": "^1.0.0",
+        "depd": "^2.0.0",
+        "destroy": "^1.0.4",
+        "encodeurl": "^1.0.2",
+        "escape-html": "^1.0.3",
+        "fresh": "~0.5.2",
+        "http-assert": "^1.3.0",
+        "http-errors": "^1.6.3",
+        "is-generator-function": "^1.0.7",
+        "koa-compose": "^4.1.0",
+        "koa-convert": "^2.0.0",
+        "on-finished": "^2.3.0",
+        "only": "~0.0.2",
+        "parseurl": "^1.3.2",
+        "statuses": "^1.5.0",
+        "type-is": "^1.6.16",
+        "vary": "^1.1.2"
+      },
+      "engines": {
+        "node": "^4.8.4 || ^6.10.1 || ^7.10.1 || >= 8.1.4"
+      }
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+    },
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+        "koa-compose": "^4.1.0"
+      },
+      "engines": {
+        "node": ">= 10"
+      }
+    },
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+        "debug": "^4.1.1",
+        "http-errors": "^1.7.3",
+        "resolve-path": "^1.4.0"
+      },
+      "engines": {
+        "node": ">= 8"
+      }
+    },
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+        "node": ">= 0.6"
+      }
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+        "inherits": "2.0.4",
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+        "statuses": ">= 1.5.0 < 2",
+        "toidentifier": "1.0.1"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
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+        "debug": "^3.1.0",
+        "koa-send": "^5.0.0"
+      },
+      "engines": {
+        "node": ">= 7.6.0"
+      }
+    },
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+      "dependencies": {
+        "ms": "^2.1.1"
+      }
+    },
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+      "version": "1.8.1",
+      "resolved": "https://registry.npmmirror.com/http-errors/-/http-errors-1.8.1.tgz",
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+      "dependencies": {
+        "depd": "~1.1.2",
+        "inherits": "2.0.4",
+        "setprototypeof": "1.2.0",
+        "statuses": ">= 1.5.0 < 2",
+        "toidentifier": "1.0.1"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/koa/node_modules/http-errors/node_modules/depd": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmmirror.com/depd/-/depd-1.1.2.tgz",
+      "integrity": "sha512-7emPTl6Dpo6JRXOXjLRxck+FlLRX5847cLKEn00PLAgc3g2hTZZgr+e4c2v6QpSmLeFP3n5yUo7ft6avBK/5jQ==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/koa/node_modules/statuses": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmmirror.com/statuses/-/statuses-1.5.0.tgz",
+      "integrity": "sha512-OpZ3zP+jT1PI7I8nemJX4AKmAX070ZkYPVWV/AaKTJl+tXCTGyVdC1a4SL8RUQYEwk/f34ZX8UTykN68FwrqAA==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/media-typer": {
+      "version": "0.3.0",
+      "resolved": "https://registry.npmmirror.com/media-typer/-/media-typer-0.3.0.tgz",
+      "integrity": "sha512-dq+qelQ9akHpcOl/gUVRTxVIOkAJ1wR3QAvb4RsVjS8oVoFjDGTc679wJYmUmknUF5HwMLOgb5O+a3KxfWapPQ==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/methods": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmmirror.com/methods/-/methods-1.1.2.tgz",
+      "integrity": "sha512-iclAHeNqNm68zFtnZ0e+1L2yUIdvzNoauKU4WBA3VvH/vPFieF7qfRlwUZU+DA9P9bPXIS90ulxoUoCH23sV2w==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/mime-db": {
+      "version": "1.52.0",
+      "resolved": "https://registry.npmmirror.com/mime-db/-/mime-db-1.52.0.tgz",
+      "integrity": "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/mime-types": {
+      "version": "2.1.35",
+      "resolved": "https://registry.npmmirror.com/mime-types/-/mime-types-2.1.35.tgz",
+      "integrity": "sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==",
+      "dependencies": {
+        "mime-db": "1.52.0"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/ms": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmmirror.com/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+    },
+    "node_modules/negotiator": {
+      "version": "0.6.3",
+      "resolved": "https://registry.npmmirror.com/negotiator/-/negotiator-0.6.3.tgz",
+      "integrity": "sha512-+EUsqGPLsM+j/zdChZjsnX51g4XrHFOIXwfnCVPGlQk/k5giakcKsuxCObBRu6DSm9opw/O6slWbJdghQM4bBg==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/on-finished": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmmirror.com/on-finished/-/on-finished-2.4.1.tgz",
+      "integrity": "sha512-oVlzkg3ENAhCk2zdv7IJwd/QUD4z2RxRwpkcGY8psCVcCYZNq4wYnVWALHM+brtuJjePWiYF/ClmuDr8Ch5+kg==",
+      "dependencies": {
+        "ee-first": "1.1.1"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/only": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmmirror.com/only/-/only-0.0.2.tgz",
+      "integrity": "sha512-Fvw+Jemq5fjjyWz6CpKx6w9s7xxqo3+JCyM0WXWeCSOboZ8ABkyvP8ID4CZuChA/wxSx+XSJmdOm8rGVyJ1hdQ=="
+    },
+    "node_modules/parseurl": {
+      "version": "1.3.3",
+      "resolved": "https://registry.npmmirror.com/parseurl/-/parseurl-1.3.3.tgz",
+      "integrity": "sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/path-is-absolute": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmmirror.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz",
+      "integrity": "sha512-AVbw3UJ2e9bq64vSaS9Am0fje1Pa8pbGqTTsmXfaIiMpnr5DlDhfJOuLj9Sf95ZPVDAUerDfEk88MPmPe7UCQg==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/path-to-regexp": {
+      "version": "6.2.1",
+      "resolved": "https://registry.npmmirror.com/path-to-regexp/-/path-to-regexp-6.2.1.tgz",
+      "integrity": "sha512-JLyh7xT1kizaEvcaXOQwOc2/Yhw6KZOvPf1S8401UyLk86CU79LN3vl7ztXGm/pZ+YjoyAJ4rxmHwbkBXJX+yw=="
+    },
+    "node_modules/resolve-path": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmmirror.com/resolve-path/-/resolve-path-1.4.0.tgz",
+      "integrity": "sha512-i1xevIst/Qa+nA9olDxLWnLk8YZbi8R/7JPbCMcgyWaFR6bKWaexgJgEB5oc2PKMjYdrHynyz0NY+if+H98t1w==",
+      "dependencies": {
+        "http-errors": "~1.6.2",
+        "path-is-absolute": "1.0.1"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/resolve-path/node_modules/depd": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmmirror.com/depd/-/depd-1.1.2.tgz",
+      "integrity": "sha512-7emPTl6Dpo6JRXOXjLRxck+FlLRX5847cLKEn00PLAgc3g2hTZZgr+e4c2v6QpSmLeFP3n5yUo7ft6avBK/5jQ==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/resolve-path/node_modules/http-errors": {
+      "version": "1.6.3",
+      "resolved": "https://registry.npmmirror.com/http-errors/-/http-errors-1.6.3.tgz",
+      "integrity": "sha512-lks+lVC8dgGyh97jxvxeYTWQFvh4uw4yC12gVl63Cg30sjPX4wuGcdkICVXDAESr6OJGjqGA8Iz5mkeN6zlD7A==",
+      "dependencies": {
+        "depd": "~1.1.2",
+        "inherits": "2.0.3",
+        "setprototypeof": "1.1.0",
+        "statuses": ">= 1.4.0 < 2"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/resolve-path/node_modules/inherits": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmmirror.com/inherits/-/inherits-2.0.3.tgz",
+      "integrity": "sha512-x00IRNXNy63jwGkJmzPigoySHbaqpNuzKbBOmzK+g2OdZpQ9w+sxCN+VSB3ja7IAge2OP2qpfxTjeNcyjmW1uw=="
+    },
+    "node_modules/resolve-path/node_modules/setprototypeof": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmmirror.com/setprototypeof/-/setprototypeof-1.1.0.tgz",
+      "integrity": "sha512-BvE/TwpZX4FXExxOxZyRGQQv651MSwmWKZGqvmPcRIjDqWub67kTKuIMx43cZZrS/cBBzwBcNDWoFxt2XEFIpQ=="
+    },
+    "node_modules/resolve-path/node_modules/statuses": {
+      "version": "1.5.0",
+      "resolved": "https://registry.npmmirror.com/statuses/-/statuses-1.5.0.tgz",
+      "integrity": "sha512-OpZ3zP+jT1PI7I8nemJX4AKmAX070ZkYPVWV/AaKTJl+tXCTGyVdC1a4SL8RUQYEwk/f34ZX8UTykN68FwrqAA==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/safe-buffer": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmmirror.com/safe-buffer/-/safe-buffer-5.2.1.tgz",
+      "integrity": "sha512-rp3So07KcdmmKbGvgaNxQSJr7bGVSVk5S9Eq1F+ppbRo70+YeaDxkw5Dd8NPN+GD6bjnYm2VuPuCXmpuYvmCXQ=="
+    },
+    "node_modules/setprototypeof": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmmirror.com/setprototypeof/-/setprototypeof-1.2.0.tgz",
+      "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
+    },
+    "node_modules/statuses": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmmirror.com/statuses/-/statuses-2.0.1.tgz",
+      "integrity": "sha512-RwNA9Z/7PrK06rYLIzFMlaF+l73iwpzsqRIFgbMLbTcLD6cOao82TaWefPXQvB2fOC4AjuYSEndS7N/mTCbkdQ==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmmirror.com/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA==",
+      "engines": {
+        "node": ">=0.6"
+      }
+    },
+    "node_modules/tsscmp": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmmirror.com/tsscmp/-/tsscmp-1.0.6.tgz",
+      "integrity": "sha512-LxhtAkPDTkVCMQjt2h6eBVY28KCjikZqZfMcC15YBeNjkgUpdCfBu5HoiOTDu86v6smE8yOjyEktJ8hlbANHQA==",
+      "engines": {
+        "node": ">=0.6.x"
+      }
+    },
+    "node_modules/type-is": {
+      "version": "1.6.18",
+      "resolved": "https://registry.npmmirror.com/type-is/-/type-is-1.6.18.tgz",
+      "integrity": "sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==",
+      "dependencies": {
+        "media-typer": "0.3.0",
+        "mime-types": "~2.1.24"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmmirror.com/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/ylru": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmmirror.com/ylru/-/ylru-1.3.2.tgz",
+      "integrity": "sha512-RXRJzMiK6U2ye0BlGGZnmpwJDPgakn6aNQ0A7gHRbD4I0uvK4TW6UqkK1V0pp9jskjJBAXd3dRrbzWkqJ+6cxA==",
+      "engines": {
+        "node": ">= 4.0.0"
+      }
+    }
+  }
+}

19_Node.js/day-3/code/koa-app/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "koa-app",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "type": "module",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "dev": "nodemon"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@koa/router": "^12.0.0",
+    "koa": "^2.14.2",
+    "koa-static": "^5.0.0"
+  }
+}

19_Node.js/day-3/code/koa-app/router/index.mjs

@@ -0,0 +1,51 @@
+import Router from '@koa/router';
+
+const router = new Router();
+
+// 定义一些静态数据
+const users = [
+  {
+    id: 1,
+    name: '果果',
+    age: 18,
+  },
+  {
+    id: 2,
+    name: '静静',
+    age: 38,
+  },
+  {
+    id: 3,
+    name: '欣欣',
+    age: 18,
+  },
+  {
+    id: 4,
+    name: '诗诗',
+    age: 28,
+  },
+];
+
+router
+  // 获取所有用户数据
+  .get('/', (ctx) => {
+    //! 如果响应数据类型 赋值为 一个对象，那么koa会自动设置响应头content-type = application/json;chartset=utf-8
+    ctx.body = users;
+  })
+  // 分页获取数据
+  // 思考：1 是get还是post；get 2 需要给服务端 传递数据吗？ 当前页码current and 每页条数count
+  .get('/page', (ctx) => {
+    // ? 如何获取用户传递过来的参数current以及count？
+    //! koa框架 会 自动处理所有请求的查询参数 -- 在处理路由时，可以直接通过ctx.query来获取所有的查询参数
+    // ctx.query 获取所有转译后查询参数对象
+    // console.log(ctx.query);
+    const { current, count } = ctx.query;
+
+    // 从总数据的数组中正确的截取出我们想要的那些数据
+    // 1 用数组的slice方法 进行 数据截取
+    // 1: [0,1) 2: [1, 2)  3: [2, 3)... m: [(m-1)*count, count * m )
+
+    ctx.body = users.slice((current - 1) * count, current * count);
+  });
+
+export default router;