Node.js day4:文件上传 续

19_Node.js/day-4/code/xia-koaapp/app.config.mjs

@@ -0,0 +1,6 @@
+const PORT = 4000;
+const HOST = '0.0.0.0';
+const UPLOAD_DIR = 'public/upload';
+const STATIC = 'public';
+
+export { PORT, HOST, UPLOAD_DIR, STATIC };

19_Node.js/day-4/code/xia-koaapp/index.js

@@ -0,0 +1,19 @@
+import Koa from 'koa';
+import { koaBody } from 'koa-body';
+import serve from 'koa-static';
+import { PORT, HOST, STATIC } from './app.config.mjs';
+import router from './router/index.mjs';
+
+const app = new Koa();
+
+// 托管静态文件
+app.use(serve(STATIC));
+// 配置解析请求体
+app.use(koaBody());
+
+// 添加路由
+app.use(router.routes()).use(router.allowedMethods());
+
+app.listen(PORT, HOST, () => {
+  console.info('Server is running at port: ', PORT);
+});

19_Node.js/day-4/code/xia-koaapp/package-lock.json

@@ -0,0 +1,950 @@
+{
+  "name": "xia-koaapp",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "xia-koaapp",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "@koa/router": "^12.0.0",
+        "koa": "^2.14.2",
+        "koa-body": "^6.0.1",
+        "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/@types/accepts": {
+      "version": "1.3.5",
+      "resolved": "https://registry.npmmirror.com/@types/accepts/-/accepts-1.3.5.tgz",
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+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/body-parser": {
+      "version": "1.19.2",
+      "resolved": "https://registry.npmmirror.com/@types/body-parser/-/body-parser-1.19.2.tgz",
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+      "dependencies": {
+        "@types/connect": "*",
+        "@types/node": "*"
+      }
+    },
+    "node_modules/@types/co-body": {
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+      "resolved": "https://registry.npmmirror.com/@types/co-body/-/co-body-6.1.0.tgz",
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+      "dependencies": {
+        "@types/node": "*",
+        "@types/qs": "*"
+      }
+    },
+    "node_modules/@types/connect": {
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+      "resolved": "https://registry.npmmirror.com/@types/connect/-/connect-3.4.35.tgz",
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+      }
+    },
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+        "@types/express": "*",
+        "@types/keygrip": "*",
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+      }
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+        "@types/serve-static": "*"
+      }
+    },
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+    },
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+      "resolved": "https://registry.npmmirror.com/@types/koa/-/koa-2.13.6.tgz",
+      "integrity": "sha512-diYUfp/GqfWBAiwxHtYJ/FQYIXhlEhlyaU7lB/bWQrx4Il9lCET5UwpFy3StOAohfsxxvEQ11qIJgT1j2tfBvw==",
+      "dependencies": {
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+        "@types/content-disposition": "*",
+        "@types/cookies": "*",
+        "@types/http-assert": "*",
+        "@types/http-errors": "*",
+        "@types/keygrip": "*",
+        "@types/koa-compose": "*",
+        "@types/node": "*"
+      }
+    },
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+      "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/qs": {
+      "version": "6.11.1",
+      "resolved": "https://registry.npmmirror.com/qs/-/qs-6.11.1.tgz",
+      "integrity": "sha512-0wsrzgTz/kAVIeuxSjnpGC56rzYtr6JT/2BwEvMaPhFIoYa1aGO8LbzuU1R0uUYQkLpWBTOj0l/CLAJB64J6nQ==",
+      "dependencies": {
+        "side-channel": "^1.0.4"
+      },
+      "engines": {
+        "node": ">=0.6"
+      }
+    },
+    "node_modules/raw-body": {
+      "version": "2.5.2",
+      "resolved": "https://registry.npmmirror.com/raw-body/-/raw-body-2.5.2.tgz",
+      "integrity": "sha512-8zGqypfENjCIqGhgXToC8aB2r7YrBX+AQAfIPs/Mlk+BtPTztOvTS01NRW/3Eh60J+a48lt8qsCzirQ6loCVfA==",
+      "dependencies": {
+        "bytes": "3.1.2",
+        "http-errors": "2.0.0",
+        "iconv-lite": "0.4.24",
+        "unpipe": "1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "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/safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmmirror.com/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+    },
+    "node_modules/setprototypeof": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmmirror.com/setprototypeof/-/setprototypeof-1.2.0.tgz",
+      "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
+    },
+    "node_modules/side-channel": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmmirror.com/side-channel/-/side-channel-1.0.4.tgz",
+      "integrity": "sha512-q5XPytqFEIKHkGdiMIrY10mvLRvnQh42/+GoBlFW3b2LXLE2xxJpZFdm94we0BaoV3RwJyGqg5wS7epxTv0Zvw==",
+      "dependencies": {
+        "call-bind": "^1.0.0",
+        "get-intrinsic": "^1.0.2",
+        "object-inspect": "^1.9.0"
+      }
+    },
+    "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/unpipe": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmmirror.com/unpipe/-/unpipe-1.0.0.tgz",
+      "integrity": "sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "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/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmmirror.com/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="
+    },
+    "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"
+      }
+    },
+    "node_modules/zod": {
+      "version": "3.21.4",
+      "resolved": "https://registry.npmmirror.com/zod/-/zod-3.21.4.tgz",
+      "integrity": "sha512-m46AKbrzKVzOzs/DZgVnG5H55N1sv1M8qZU3A8RIKbs3mrACDNeIOeilDymVb2HdmP8uwshOCF4uJ8uM9rCqJw=="
+    }
+  }
+}

19_Node.js/day-4/code/xia-koaapp/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "xia-koaapp",
+  "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-body": "^6.0.1",
+    "koa-static": "^5.0.0"
+  }
+}

19_Node.js/day-4/code/xia-koaapp/router/index.mjs

@@ -0,0 +1,59 @@
+import Router from '@koa/router';
+import { koaBody } from 'koa-body';
+import { copyFile, rm } from 'node:fs/promises';
+import { UPLOAD_DIR, STATIC } from '../app.config.mjs';
+
+const router = new Router();
+
+// 通过router实例的一些方法 比如 get、post等去定义 对应请求方法的路由
+router
+  .get('/', (ctx) => {
+    ctx.body = 'Koa App.';
+  })
+  .put(
+    '/upload',
+    koaBody({
+      multipart: true,
+      formidable: {
+        keepExtensions: true,
+        uploadDir: UPLOAD_DIR, // 设置上传文件的最终位置
+      },
+      onError(err, ctx) {
+        ctx.body = {
+          code: 1,
+          msg: err,
+        };
+      },
+    }),
+    async (ctx) => {
+      let filename = ctx.request.files.file.newFilename;
+      let srcFile = `./${UPLOAD_DIR}/${filename}`;
+      let destFile = srcFile;
+      // 获取 请求体 中 除了file文件之外的其他数据
+      const { folder } = ctx.request.body;
+      // 如果用户在上传文件时 指定了目标文件夹
+      if (folder) {
+        // 1 将默认上传位置的文件 拷贝到 目标的文件夹下
+        destFile = `./${UPLOAD_DIR}/${folder}/${filename}`;
+        try {
+          // 先确保destFile的文件夹都真实存在
+          await copyFile(srcFile, destFile);
+          // 2 成功后 删除默认位置的文件
+          await rm(srcFile);
+        } catch (error) {
+          console.error(error);
+        }
+      }
+      // 给客户端响应数据
+      ctx.body = {
+        code: 0,
+        data: {
+          path: `${UPLOAD_DIR.replace(STATIC, '')}/${folder}/${filename}`,
+          filename,
+        },
+        msg: '上传成功',
+      };
+    }
+  );
+
+export default router;