The tacit cooperation between Vue and Excel: how to realize batch modification and export of data

Tacit cooperation between Vue and Excel: How to implement batch modification and export of data

Excel has always been a commonly used tool in terms of data management and processing. With the development of front-end technology, Vue, as a popular JavaScript framework, also has excellent performance in data display and processing. This article will introduce how to realize batch modification and export of data through the combination of Vue and Excel.

The technology stack involved is as follows:

• Vue.js: a front-end JavaScript framework used to build user interfaces.
• vue-xlsx: A convenient Vue component for processing Excel files.
• xlsx: A JavaScript library for parsing and generating Excel files.

Step 1: Install related dependencies

First, open a command line terminal window in the project root directory and run the following command:

npm install vue-xlsx xlsx

After the installation is completed, in Introduce these modules into the entry file of Vue:

import Vue from 'vue';
import VueXlsx from 'vue-xlsx';

Vue.use(VueXlsx);

Step 2: Create a data display component

Next, we create a Vue component for displaying data and making batch modifications. Suppose we have a table of student information that contains the student's name, age, and grades. We can create a component named StudentList:

<template>
  <div>
    <table>
      <thead>
        <tr>
          <th>姓名</th>
          <th>年龄</th>
          <th>成绩</th>
        </tr>
      </thead>
      <tbody>
        <tr v-for="(student, index) in students" :key="index">
          <td>{{ student.name }}</td>
          <td>{{ student.age }}</td>
          <td>{{ student.score }}</td>
        </tr>
      </tbody>
    </table>

    <button @click="exportData">导出数据</button>
    <input type="file" @change="importData" accept=".xlsx" />
  </div>
</template>

<script>
export default {
  data() {
    return {
      students: [
        { name: '张三', age: 18, score: 90 },
        { name: '李四', age: 19, score: 85 },
        { name: '王五', age: 20, score: 95 },
      ],
    };
  },
  methods: {
    exportData() {
      const data = [['姓名', '年龄', '成绩']];
      this.students.forEach(student => {
        data.push([student.name, student.age, student.score]);
      });
      this.$xlsx.export(data, '学生信息.xlsx');
    },
    importData(event) {
      const file = event.target.files[0];
      const reader = new FileReader();
      reader.onload = (e) => {
        const data = this.$xlsx.parse(e.target.result);
        // 处理解析后的数据
      };
      reader.readAsBinaryString(file);
    },
  },
};
</script>

In the above code, we use the v-for directive to render the student list in a loop. When clicking the "Export Data" button, we convert the student data into an Excel file and export it. After selecting the Excel file, we parse the file through FileReader and pass the parsed data to the corresponding processing function.

Step 3: Open the Excel file

In order to facilitate the operation of the Excel file, we need to extend the prototype chain of Vue and create a global method$xlsx. In the Vue entry file, we can add the following code:

import xlsx from 'xlsx';

Vue.prototype.$xlsx = {
  export(data, filename) {
    const ws = xlsx.utils.aoa_to_sheet(data);
    const wb = xlsx.utils.book_new();
    xlsx.utils.book_append_sheet(wb, ws, 'Sheet1');
    xlsx.writeFile(wb, filename);
  },
  parse(data) {
    const wb = xlsx.read(data, { type: 'binary' });
    const ws = wb.Sheets[wb.SheetNames[0]];
    return xlsx.utils.sheet_to_json(ws, { header: 1 });
  },
};

In the above code, we use the relevant methods of the xlsx library to process Excel files. The $xlsx.export method exports data to Excel files, and the $xlsx.parse method is used to parse Excel files.

Step 4: Install dependencies and run the project

Finally, in the command line terminal window, run the following command to install the project dependencies and run the project:

npm install
npm run serve

Now, you You can visit the project page to view and modify student information. Click the "Export Data" button and you will be able to export the data to an Excel file. After selecting an Excel file, you can parse the file and process the data.

Summary

Through the tacit cooperation of Vue and Excel, we can easily modify and export data in batches. Whether in an enterprise management system or in a personal project, this method can greatly improve the efficiency of data management and processing. At the same time, we can also expand this method to achieve more rich functions based on actual needs.

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