electron sheetjs 从 JSON 下载生成的文件

Question

我有一个带有 VueJS 的 Electron 应用程序，我尝试使用 sheetjs 下载生成的 XLS，但 provided 解决方法对我的情况不起作用。这是我一直在尝试的：

 exportData(id, type) {
      // eslint-disable-next-line no-console
      console.log(type);

      (async () => {
        const data = await ProjectController.getProject(id);
        const ws = XLSX.utils.json_to_sheet(JSON.parse(data.excel));
        // eslint-disable-next-line no-console

        let wb = XLSX.utils.book_new();
        XLSX.utils.book_append_sheet(wb, ws, "test");
        let o = dialog.showSaveDialog();
        // eslint-disable-next-line no-console
        console.log(o);

        XLSX.writeFile(wb, o);

        // eslint-disable-next-line no-console
        //console.log(file);
      })();
    }

在控制台中我收到以下错误 Uncaught (in promise) TypeError: o.file.lastIndexOf is not a function。

如果我使用下面的代码

  (async () => {
        const data = await ProjectController.getProject(id);

        const ws = (XLSX.WorkSheet = XLSX.utils.json_to_sheet(
          JSON.parse(data.excel)
        ));

        let wb = XLSX.utils.book_new();
        XLSX.utils.book_append_sheet(wb, ws, "test");


        const file = XLSX.write(wb, {
          bookType: "xlsx",
          type: "buffer",
          compression: true
        });

        let savePath = dialog.showSaveDialog({});
        XLSX.writeFile(file, savePath);

        fs.writeFileSync("test1.xlsx", file);


      })();

比文件将被下载到项目文件夹的根目录中，之前不会弹出。但我希望能够将这些文件下载到用户选择的文件夹中。

这是我的 package.json

{
  "name": "movie-translation-tool",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint",
    "electron:build": "vue-cli-service electron:build",
    "electron:serve": "vue-cli-service electron:serve",
    "i18n:report": "vue-cli-service i18n:report --src './src/**/*.?(js|vue)' --locales './src/locales/**/*.json'",
    "postinstall": "electron-builder install-app-deps",
    "postuninstall": "electron-builder install-app-deps"
  },
  "main": "background.js",
  "dependencies": {
    "awesome-phonenumber": "^2.24.0",
    "core-js": "^3.4.3",
    "dropbox": "^4.0.30",
    "knex": "^0.20.3",
    "mssql": "^6.0.1",
    "objection": "^2.0.3",
    "pdf2json": "^1.2.0",
    "sqlite3": "^4.1.1",
    "vee-validate": "^3.1.3",
    "vue": "^2.6.10",
    "vue-i18n": "^8.0.0",
    "vue-router": "^3.1.3",
    "vue-video-player": "^5.0.2",
    "vuetify": "^2.1.0",
    "vuetify-image-input": "^19.1.0",
    "vuex": "^3.1.2",
    "xlsx": "^0.15.3"
  },
  "devDependencies": {
    "@mdi/font": "^4.6.95",
    "@mdi/js": "^4.6.95",
    "@vue/cli-plugin-babel": "^4.1.0",
    "@vue/cli-plugin-eslint": "^4.1.0",
    "@vue/cli-plugin-router": "^4.1.1",
    "@vue/cli-plugin-vuex": "^4.1.1",
    "@vue/cli-service": "^4.1.0",
    "babel-eslint": "^10.0.3",
    "electron": "^6.0.0",
    "eslint": "^5.16.0",
    "eslint-plugin-vue": "^5.0.0",
    "material-design-icons-iconfont": "^5.0.1",
    "sass": "^1.19.0",
    "sass-loader": "^10.0.0",
    "vue-cli-plugin-electron-builder": "^1.4.3",
    "vue-cli-plugin-i18n": "^0.6.1",
    "vue-cli-plugin-vuetify": "^2.0.2",
    "vue-template-compiler": "^2.6.10",
    "vuetify-loader": "^1.3.0"
  },
  "eslintConfig": {
    "root": true,
    "env": {
      "node": true
    },
    "extends": [
      "plugin:vue/essential",
      "eslint:recommended"
    ],
    "rules": {},
    "parserOptions": {
      "parser": "babel-eslint"
    }
  },
  "browserslist": [
    "> 1%",
    "last 2 versions"
  ]
}

如何将文件正确附加到 windows？

Answer 1

对话框方法 dialog.showSaveDialog return 是一个解析为对象的承诺，它不是 return 字符串：

dialog.showSaveDialog([browserWindow, ]options)

Returns Promise<Object> - Resolve with an object containing the following:

canceled Boolean - whether or not the dialog was canceled.

filePath String (optional) - If the dialog is canceled, this will be undefined.

bookmark String (optional) macOS mas - Base64 encoded string which contains the security scoped bookmark data for the saved file. securityScopedBookmarks must be enabled for this to be present. (For return values, see table here.)

你必须 await 为 dialog.showSaveDialog 或使用 dialog.showSaveDialogSync 而且，你可以使 exportData 是异步的而不是创建内部异步函数。

尝试像这样重构您的代码：

async exportData(id, type) {
  const data = await ProjectController.getProject(id);
  const ws = XLSX.utils.json_to_sheet(JSON.parse(data.excel));
  const wb = XLSX.utils.book_new();

  XLSX.utils.book_append_sheet(wb, ws, "test");

  let { filePath, canceled } = await dialog.showSaveDialog();

  if (!canceled) {
    XLSX.writeFile(wb, filePath);
  }
}

electron sheetjs 从 JSON 下载生成的文件

electron sheetjs download generated file from JSON

file

vue.js

download

electron

sheetjs

`dialog.showSaveDialog([browserWindow, ]options)`