修改excel导入数据处理空值情况

src/main/java/com/keymobile/indicators/utils/ExcelUtil.java

@@ -15,6 +15,7 @@ public class ExcelUtil {
      */
     public static String getXSSFCellValue(XSSFCell xssfCell) {
         String cellValue = null;
+        if (xssfCell != null) {
             CellType cellType = xssfCell.getCellType();
             if (CellType.STRING.equals(cellType)) {
                 cellValue = xssfCell.getStringCellValue();
@@ -25,6 +26,7 @@ public class ExcelUtil {
             } else if (CellType.FORMULA.equals(cellType)) {
                 cellValue = String.valueOf(xssfCell.getCellFormula());
             }
+        }
         return cellValue;
     }
 }