Fix 修复ExcelBigNumberConvert全局处理器不生效问题

SERVER/VberAdminPlusV3/vber-common/vber-common-excel/src/main/java/com/vber/common/excel/convert/ExcelBigNumberConvert.java

@@ -28,16 +28,18 @@ public class ExcelBigNumberConvert implements Converter<Long> {
 
     @Override
     public CellDataTypeEnum supportExcelTypeKey() {
-        return CellDataTypeEnum.STRING;
+        return null;
     }
 
     @Override
-    public Long convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
+    public Long convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty,
+            GlobalConfiguration globalConfiguration) {
         return Convert.toLong(cellData.getData());
     }
 
     @Override
-    public WriteCellData<Object> convertToExcelData(Long object, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
+    public WriteCellData<Object> convertToExcelData(Long object, ExcelContentProperty contentProperty,
+            GlobalConfiguration globalConfiguration) {
         if (ObjectUtil.isNotNull(object)) {
             String str = Convert.toStr(object);
             if (str.length() > 15) {