导出表格样式

sckw-common/sckw-common-core/src/main/java/com/sckw/core/handler/ExcelCustomRowStyleHandler.java

@@ -14,86 +14,94 @@ import java.util.List;
  */
 public class ExcelCustomRowStyleHandler implements CellWriteHandler {
 
-    // 定义颜色常量 (RGB)
-    private static final short COLOR_YELLOW = IndexedColors.YELLOW.getIndex(); // 黄色
-    private static final short COLOR_LIGHT_GRAY = IndexedColors.GREY_25_PERCENT.getIndex(); // 浅灰色（斑马纹）
-    private static final short COLOR_WHITE = IndexedColors.WHITE.getIndex(); // 白色
+    // 颜色常量
+    private static final short COLOR_YELLOW = IndexedColors.YELLOW.getIndex();
+    private static final short COLOR_LIGHT_GRAY = IndexedColors.GREY_25_PERCENT.getIndex();
+    private static final short COLOR_WHITE = IndexedColors.WHITE.getIndex();
+
+    // 缓存三种全局样式，只创建一次，解决POI样式超限问题
+    private CellStyle whiteCellStyle;
+    private CellStyle grayCellStyle;
+    private CellStyle yellowCellStyle;
+
+    /**
+     * 基础样式：统一边框 + 文本格式@
+     */
+    private CellStyle createBaseStyle(Workbook workbook) {
+        CellStyle base = workbook.createCellStyle();
+        // 全部边框细线
+        base.setBorderBottom(BorderStyle.THIN);
+        base.setBorderLeft(BorderStyle.THIN);
+        base.setBorderRight(BorderStyle.THIN);
+        base.setBorderTop(BorderStyle.THIN);
+        // 设置单元格为文本格式，替代 RowWriteHandlerImpl
+        DataFormat dataFormat = workbook.createDataFormat();
+        base.setDataFormat(dataFormat.getFormat("@"));
+        return base;
+    }
+
+    /**
+     * 初始化三种行样式，仅执行一次
+     */
+    private void initStyle(Workbook workbook) {
+        if (whiteCellStyle != null) {
+            return;
+        }
+        // 白色行
+        whiteCellStyle = createBaseStyle(workbook);
+        whiteCellStyle.setFillForegroundColor(COLOR_WHITE);
+        whiteCellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
+
+        // 灰色斑马行
+        grayCellStyle = createBaseStyle(workbook);
+        grayCellStyle.setFillForegroundColor(COLOR_LIGHT_GRAY);
+        grayCellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
+
+        // 黄色特殊行 ID=-1
+        yellowCellStyle = createBaseStyle(workbook);
+        yellowCellStyle.setFillForegroundColor(COLOR_YELLOW);
+        yellowCellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
+    }
 
     @Override
     public void afterCellDispose(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder,
                                  List<WriteCellData<?>> cellDataList, Cell cell, Head head,
                                  Integer relativeRowIndex, Boolean isHead) {
-        // 1. 跳过表头，只处理数据行
+        // 跳过表头
         if (isHead || relativeRowIndex == null) {
             return;
         }
-
         Workbook workbook = writeSheetHolder.getSheet().getWorkbook();
-        Row row = cell.getRow();
+        initStyle(workbook);
 
-        // 2. 获取当前行的数据对象
-
-        // 假设ID是第一列；如果ID不是第一列，修改columnIndex判断
-        int idColumnIndex = 0;
-        boolean isSpecialRow = false;
-        long idValue = 0;
+        Row row = cell.getRow();
+        final int idColumnIndex = 0;
+        boolean markYellow = false;
 
-        // 尝试获取当前单元格如果是ID列的值
-        if (cell.getColumnIndex() == idColumnIndex) {
+        // 读取当前行ID列值，判断是否黄色高亮
+        Cell idCell = row.getCell(idColumnIndex);
+        if (idCell != null) {
             try {
-                // 尝试读取数值
-                if (cell.getCellType() == CellType.NUMERIC) {
-                    idValue = (long) cell.getNumericCellValue();
-                } else if (cell.getCellType() == CellType.STRING) {
-                    idValue = Long.parseLong(cell.getStringCellValue());
+                long idVal = switch (idCell.getCellType()) {
+                    case NUMERIC -> (long) idCell.getNumericCellValue();
+                    case STRING -> Long.parseLong(idCell.getStringCellValue().trim());
+                    default -> 0L;
+                };
+                if (idVal == -1L) {
+                    markYellow = true;
                 }
-
-                // 判定条件：ID == -1
-                if (idValue == -1L) {
-                    isSpecialRow = true;
-                }
-            } catch (Exception e) {
-                // 忽略解析错误
-            }
-        } else {
-            // 如果不是ID列，我们需要查看同一行ID列的值来决定颜色
-            Cell idCell = row.getCell(idColumnIndex);
-            if (idCell != null) {
-                try {
-                    if (idCell.getCellType() == CellType.NUMERIC) {
-                        idValue = (long) idCell.getNumericCellValue();
-                    }
-                    if (idValue == -1L) isSpecialRow = true;
-                } catch(Exception ignored){}
+            } catch (Exception ignored) {
+                // 解析异常走斑马纹逻辑
             }
         }
 
-        // 3. 创建或获取样式
-        CellStyle style = workbook.createCellStyle();
-
-        // 4. 设置背景色逻辑
-        if (isSpecialRow) {
-            // 优先级最高：如果是 ID=-1，强制黄色
-            style.setFillForegroundColor(COLOR_YELLOW);
-            style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
+        // 选择缓存好的样式赋值，不再新建
+        CellStyle targetStyle;
+        if (markYellow) {
+            targetStyle = yellowCellStyle;
         } else {
-            // 否则执行隔行换色 (斑马纹)
-            // relativeRowIndex 从 0 开始，偶数行白，奇数行灰
-            if (relativeRowIndex % 2 == 1) {
-                style.setFillForegroundColor(COLOR_LIGHT_GRAY);
-                style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
-            } else {
-                style.setFillForegroundColor(COLOR_WHITE);
-                style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
-            }
+            targetStyle = relativeRowIndex % 2 == 1 ? grayCellStyle : whiteCellStyle;
         }
-
-        // 5. 将样式应用到当前单元格
-        style.setBorderBottom(BorderStyle.THIN);
-        style.setBorderLeft(BorderStyle.THIN);
-        style.setBorderRight(BorderStyle.THIN);
-        style.setBorderTop(BorderStyle.THIN);
-
-        cell.setCellStyle(style);
+        cell.setCellStyle(targetStyle);
     }
 }

sckw-common/sckw-common-excel/src/main/java/com/sckw/excel/utils/ExcelUtil.java

@@ -57,7 +57,7 @@ public class ExcelUtil {
                     .autoCloseStream(Boolean.FALSE)
                     .registerConverter(new LongStringConverter())
                     //设置导出excel的单元格格式为文本
-                    .registerWriteHandler(new RowWriteHandlerImpl())
+//                    .registerWriteHandler(new RowWriteHandlerImpl())
                     // 自定义列宽、行高
                     .registerWriteHandler(new CustomCellWeightWeightConfig())
                     // 自定义背景