1月12

src/vendor/Export2Excel.js

       if (val == null) {
         return {
           'wch': 10
+          // 'wch': 1
         };
       }
       /*再判断是否为中文*/
     let result = colWidth[0];
     for (let i = 1; i < colWidth.length; i++) {
       for (let j = 0; j < colWidth[i].length; j++) {
-        if (result[j]['wch'] < colWidth[i][j]['wch']) {
-          result[j]['wch'] = colWidth[i][j]['wch'];
-        }
+        // console.log('7777',result[j]['wch'] ,colWidth[i][j]['wch']);
+        // if(colWidth[i][j]['wch']!=''){
+          if (result[j]['wch'] < colWidth[i][j]['wch']) {
+            result[j]['wch'] = colWidth[i][j]['wch'];
+          }
+        // }
       }
     }
     ws['!cols'] = result;
     type: "application/octet-stream"
   }), `${filename}.${bookType}`);
 }
+
+export function export_json_to_excel3({
+  multiHeader = [],
+  header,
+  data,
+  filename,
+  merges = [],
+  autoWidth = true,
+  bookType = 'xlsx'
+} = {}) {
+  /* original data */
+  filename = filename || 'excel-list'
+  data = [...data]
+  data.unshift(header);
+  console.log('wwwww',data);
+  for (let i = multiHeader.length - 1; i > -1; i--) {
+    data.unshift(multiHeader[i])
+  }
+  console.log('qqqqq',data);
+  var ws_name = "SheetJS";
+  var wb = new Workbook(),
+    ws = sheet_from_array_of_arrays(data);
+
+  if (merges.length > 0) {
+    if (!ws['!merges']) ws['!merges'] = [];
+    merges.forEach(item => {
+      console.log(XLSX.utils.decode_range(item))
+      ws['!merges'].push(XLSX.utils.decode_range(item))
+    })
+  }
+
+  if (autoWidth) {
+    /*设置worksheet每列的最大宽度*/
+    const colWidth = data.map(row => row.map(val => {
+      /*先判断是否为null/undefined*/
+      if (val == null) {
+        return {
+          'wch': 10
+          // 'wch': 1
+        };
+      }
+      /*再判断是否为中文*/
+      else if (val.toString().charCodeAt(0) > 255) {
+        return {
+          'wch': val.toString().length * 2
+        };
+      } else {
+        return {
+          'wch': val.toString().length
+        };
+      }
+    }))
+    /*以第一行为初始值*/
+    let result = colWidth[0];
+    for (let i = 1; i < colWidth.length; i++) {
+      for (let j = 0; j < colWidth[i].length; j++) {
+        // console.log('7777',result[j]['wch'] ,colWidth[i][j]['wch']);
+        if(colWidth[i][j]['wch']!=''){
+          if (result[j]['wch'] < colWidth[i][j]['wch']) {
+            result[j]['wch'] = colWidth[i][j]['wch'];
+          }
+        }
+      }
+    }
+    ws['!cols'] = result;
+  }
+
+  /* add worksheet to workbook */
+  wb.SheetNames.push(ws_name);
+  wb.Sheets[ws_name] = ws;
+
+  var wbout = XLSX.write(wb, {
+    bookType: bookType,
+    bookSST: false,
+    type: 'binary'
+  });
+  saveAs(new Blob([s2ab(wbout)], {
+    type: "application/octet-stream"
+  }), `${filename}.${bookType}`);
+}