添加自定义公式和代码注释

src/components/ExcelComponent.vue

@@ -61,24 +61,44 @@ export default {
     });
   },
   methods: {
+    // 从MinIO加载Excel文件
     loadExcel() {
       const minioUrl = 'http://47.95.198.7:30000/tmp/123.xlsx';
 
       axios.get(minioUrl, { responseType: 'arraybuffer' })
         .then(response => {
+          // 将Excel文件转换为数组缓冲区
           const data = new Uint8Array(response.data);
+          // 将数组缓冲区转换为工作簿对象
           const workbook = XLSX.read(data, { type: 'array' });
-          this.spreadsheet.loadData(stox(workbook));
+          // 将工作簿对象转换为Spreadsheet数据格式
+          const spreadsheetData = stox(workbook);
+          // 添加自定义公式，123.xlsx表格中B列已有的公式为A+C+D。下面在F列添加A+D的计算公式.
+          const firstSheetRows = spreadsheetData[0].rows;
+          const keys = Object.keys(firstSheetRows);
+          for (let i = 1; i < keys.length - 1; i++) {
+            console.log(i, keys[i]);
+            // 在F列添加A+D的计算公式，F列的序号为5.
+            firstSheetRows[keys[i]].cells['5'] = { 
+              text: `=SUM(A${i + 1}:D${i + 1})`
+            }
+          }
+          // 将数据加载到Spreadsheet
+          this.spreadsheet.loadData(spreadsheetData);
         })
         .catch(error => console.error('加载文件失败:', error));
     },
     saveExcel() {
+      // 获取Spreadsheet的数据
       const data = this.spreadsheet.getData();
+      // 将数据转换为XLSX格式
       const workbook = xtos(data);
 
+      // 将XLSX数据保存为文件
       const excelBuffer = XLSX.write(workbook, { bookType: 'xlsx', type: 'array' });
       const blob = new Blob([excelBuffer], { type: 'application/octet-stream' });
 
+      // 将blob对象上传至minio
       const minioUploadUrl = 'http://47.95.198.7:30000/tmp/123.xlsx';
       axios.put(minioUploadUrl, blob, {
         headers: {