修复没有样式的情况下空指针异常 #1738

src/main/java/com/alibaba/excel/analysis/v07/handlers/CellTagHandler.java

@@ -1,8 +1,5 @@
 package com.alibaba.excel.analysis.v07.handlers;
 
-import org.apache.poi.xssf.usermodel.XSSFCellStyle;
-import org.xml.sax.Attributes;
-
 import com.alibaba.excel.constant.BuiltinFormats;
 import com.alibaba.excel.constant.ExcelXmlConstants;
 import com.alibaba.excel.context.xlsx.XlsxReadContext;
@@ -12,6 +9,10 @@
 import com.alibaba.excel.util.PositionUtils;
 import com.alibaba.excel.util.StringUtils;
 
+import org.apache.poi.xssf.model.StylesTable;
+import org.apache.poi.xssf.usermodel.XSSFCellStyle;
+import org.xml.sax.Attributes;
+
 /**
  * Cell Handler
  *
@@ -46,8 +47,11 @@ public void startElement(XlsxReadContext xlsxReadContext, String name, Attribute
         } else {
             dateFormatIndexInteger = Integer.parseInt(dateFormatIndex);
         }
-        XSSFCellStyle xssfCellStyle =
-            xlsxReadContext.xlsxReadWorkbookHolder().getStylesTable().getStyleAt(dateFormatIndexInteger);
+        StylesTable stylesTable = xlsxReadContext.xlsxReadWorkbookHolder().getStylesTable();
+        if (stylesTable == null) {
+            return;
+        }
+        XSSFCellStyle xssfCellStyle = stylesTable.getStyleAt(dateFormatIndexInteger);
         int dataFormat = xssfCellStyle.getDataFormat();
         xlsxReadSheetHolder.getTempCellData().setDataFormat(dataFormat);
         xlsxReadSheetHolder.getTempCellData().setDataFormatString(BuiltinFormats.getBuiltinFormat(dataFormat,

update.md

@@ -8,6 +8,8 @@
 * 优化读取性能
 * 修复部分情况下不抛出异常
 * 07版在导出的时候会导出 行数 [Issue #1282](https://github.com/alibaba/easyexcel/issues/1282)
+* 修复没有样式的情况下空指针异常 [Issue #1738](https://github.com/alibaba/easyexcel/issues/1738)
+
 
 # 2.2.8
 * 兼容07在特殊的excel的情况下，读取数据异常