签章问题解决

src/components/ExcelView/export.js

@@ -497,6 +497,7 @@ var setStyleAndValue = function (cellArr, worksheet) {
   return radio;
 };*/
 var getImagePosition = function (num, arr) {
+  let returnObj = null;
   for (let i = 0; i < arr.length; i++) {
     const item = arr[i]
     if (num < item) {
@@ -506,9 +507,19 @@ var getImagePosition = function (num, arr) {
       const rowOrCol = i > 0 ? (num - arr[i - 1]) / (arr[i] - arr[i - 1]) + i:num/item
       const native = Math.floor(rowOrCol)
       const nativeOff = parseInt(new Big(rowOrCol).minus(native).toNumber() * cellInEmu)
-      return { rowOrCol, native, nativeOff }
+      returnObj = { rowOrCol, native, nativeOff }
+      break;
     }
   }
+
+  if(returnObj == undefined || returnObj == null){
+    const currentV = arr[arr.length-1]
+    const frontV = arr[arr.length-2]
+    const cell = currentV - frontV
+    arr.push(currentV + cell)
+    returnObj = getImagePosition(num,arr)
+  }
+  return returnObj;
 }
 /**
  * 设置图片
@@ -581,11 +592,13 @@ var setImages = function (table, worksheet, workbook) {
     const col_ed = getImagePosition(w_ed, visibledatacolumn);
     const row_ed = getImagePosition(h_ed, visibledatarow);
     // 需要设置nativeCol,nativeColOff,nativeRow,nativeRowOff,可以省略col,row
-    worksheet.addImage(imageId, {
-      tl: { nativeCol: col_st.native, nativeColOff: col_st.nativeOff, nativeRow: row_st.native, nativeRowOff: row_st.nativeOff },
-      br: { nativeCol: col_ed.native, nativeColOff: col_ed.nativeOff, nativeRow: row_ed.native, nativeRowOff: row_ed.nativeOff },
-      editAs: 'oneCell',
-    });
+    if(row_ed != undefined && col_ed != undefined){
+      worksheet.addImage(imageId, {
+        tl: { nativeCol: col_st.native, nativeColOff: col_st.nativeOff, nativeRow: row_st.native, nativeRowOff: row_st.nativeOff },
+        br: { nativeCol: col_ed.native, nativeColOff: col_ed.nativeOff, nativeRow: row_ed.native, nativeRowOff: row_ed.nativeOff },
+        editAs: 'oneCell',
+      });
+    }
   }
 };