fix 修复 单元格样式覆盖问题

ruoyi-common/ruoyi-common-excel/src/main/java/org/dromara/common/excel/handler/DataWriteHandler.java

@@ -49,15 +49,16 @@ public class DataWriteHandler implements SheetWriteHandler, CellWriteHandler {
         if (CollUtil.isEmpty(notationMap) && CollUtil.isEmpty(headColumnMap)) {
             return;
         }
+        // 第一行
         WriteCellData<?> cellData = context.getFirstCellData();
+        // 第一个格子
         WriteCellStyle writeCellStyle = cellData.getOrCreateStyle();
 
-        DataFormatData dataFormatData = new DataFormatData();
-        // 单元格设置为文本格式
-        dataFormatData.setIndex((short) 49);
-        writeCellStyle.setDataFormatData(dataFormatData);
-
         if (context.getHead()) {
+            DataFormatData dataFormatData = new DataFormatData();
+            // 单元格设置为文本格式
+            dataFormatData.setIndex((short) 49);
+            writeCellStyle.setDataFormatData(dataFormatData);
             Cell cell = context.getCell();
             WriteSheetHolder writeSheetHolder = context.getWriteSheetHolder();
             Sheet sheet = writeSheetHolder.getSheet();

ruoyi-modules/ruoyi-demo/src/main/java/org/dromara/demo/domain/vo/TestDemoVo.java

@@ -2,6 +2,7 @@ package org.dromara.demo.domain.vo;
 
 import cn.idev.excel.annotation.ExcelIgnoreUnannotated;
 import cn.idev.excel.annotation.ExcelProperty;
+import cn.idev.excel.annotation.format.DateTimeFormat;
 import org.dromara.common.excel.annotation.ExcelNotation;
 import org.dromara.common.excel.annotation.ExcelRequired;
 import org.dromara.common.translation.annotation.Translation;
@@ -73,6 +74,8 @@ public class TestDemoVo implements Serializable {
     /**
      * 创建时间
      */
+    @ExcelRequired
+    @DateTimeFormat("yyyy-MM-dd HH:mm:ss")
     @ExcelProperty(value = "创建时间")
     private Date createTime;