刘璐珈

src/vendor/Export2Excel.js

@@ -218,3 +218,106 @@ export function export_json_to_excel({
     type: "application/octet-stream"
   }), `${filename}.${bookType}`);
 }
+
+//主要修改此函数内的方法
+export function export_json_to_excel2({
+                                        multiHeader = [],
+                                        header,
+                                        data,
+                                        sheetname,
+                                        filename,
+                                        merges = [],
+                                        autoWidth = true,
+                                        bookType = "xlsx"
+                                      } = {}) {
+  /* original data */
+  filename = filename || "excel-list"
+  data = [...data]
+
+  for (var i = 0; i < header.length; i++) {
+    data[i].unshift(header[i])
+  }
+
+  // data.unshift(header)
+
+  for (let i = multiHeader.length - 1; i > -1; i--) {
+    data.unshift(multiHeader[i])
+  }
+
+  var ws_name = sheetname
+  var wb = new Workbook(),
+    ws = []
+  for (var j = 0; j < header.length; j++) {
+    ws.push(sheet_from_array_of_arrays(data[j]))
+  }
+
+  if (merges.length > 0) {
+    if (!ws["!merges"]) ws["!merges"] = []
+    merges.forEach(item => {
+      ws["!merges"].push(XLSX.utils.decode_range(item))
+    })
+  }
+  // console.log("width", autoWidth)
+  if (autoWidth) {
+    /*设置worksheet每列的最大宽度*/
+    var colWidth = []
+    for (var k = 0; k < header.length; k++) {
+      colWidth.push(
+        data[k].map(row =>
+          row.map(val => {
+            /*先判断是否为null/undefined*/
+            if (val == null) {
+              return {
+                wch: 10
+              }
+            } else if (val.toString().charCodeAt(0) > 255) {
+              /*再判断是否为中文*/
+              return {
+                wch: val.toString().length * 2
+              }
+            } else {
+              return {
+                wch: val.toString().length
+              }
+            }
+          })
+        )
+      )
+    }
+
+    /*以第一行为初始值*/
+    let result = []
+    for (var k = 0; k < colWidth.length; k++) {
+      result[k] = colWidth[k][0]
+      for (let i = 1; i < colWidth[k].length; i++) {
+        for (let j = 0; j < colWidth[k][i].length; j++) {
+          if (result[k][j]["wch"] < colWidth[k][i][j]["wch"]) {
+            result[k][j]["wch"] = colWidth[k][i][j]["wch"]
+          }
+        }
+      }
+    }
+    // 分别给sheet表设置宽度
+    for (var l = 0; l < result.length; l++) {
+      ws[l]["!cols"] = result[l]
+    }
+  }
+
+  /* add worksheet to workbook */
+  for (var k = 0; k < header.length; k++) {
+    wb.SheetNames.push(ws_name[k])
+    wb.Sheets[ws_name[k]] = ws[k]
+  }
+
+  var wbout = XLSX.write(wb, {
+    bookType: bookType,
+    bookSST: false,
+    type: "binary"
+  })
+  saveAs(
+    new Blob([s2ab(wbout)], {
+      type: "application/octet-stream"
+    }),
+    `${filename}.${bookType}`
+  )
+}