商品导出

cash-common/cash-common-tools/src/main/java/com/czg/excel/ExcelExportUtil.java

@@ -3,6 +3,8 @@ package com.czg.excel;
 import com.alibaba.excel.EasyExcel;
 import com.alibaba.excel.ExcelWriter;
 import com.alibaba.excel.annotation.ExcelProperty;
+import com.alibaba.excel.write.builder.ExcelWriterBuilder;
+import com.alibaba.excel.write.handler.SheetWriteHandler;
 import com.alibaba.excel.write.metadata.WriteSheet;
 import com.alibaba.excel.write.metadata.style.WriteCellStyle;
 import com.alibaba.excel.write.style.HorizontalCellStyleStrategy;
@@ -244,4 +246,58 @@ public class ExcelExportUtil {
         }
         return count;
     }
+
+    /**
+     * 带合并单元格的商品导出到Response
+     *
+     * @param data 数据列表
+     * @param fileName 文件名
+     * @param response HttpServletResponse
+     * @param <T> 数据类型
+     */
+    public static <T> void exportProductWithMergeToResponse(List<T> data, Class<T> clazz,
+                                                            String fileName,
+                                                            HttpServletResponse response, List<SheetWriteHandler> handlers) {
+        if (data == null) {
+            data = Collections.emptyList();
+        }
+
+        setResponseHeader(response, fileName, DEFAULT_CONFIG);
+
+        try (OutputStream outputStream = response.getOutputStream()) {
+            // 创建样式策略 - 设置表头和内容都居中
+            WriteCellStyle headStyle = new WriteCellStyle();
+            headStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);
+
+            WriteCellStyle contentStyle = new WriteCellStyle();
+            contentStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);
+
+            HorizontalCellStyleStrategy styleStrategy = new HorizontalCellStyleStrategy(headStyle, contentStyle);
+
+            // 创建写入器 - 必须指定clazz
+            ExcelWriterBuilder builder = EasyExcel.write(outputStream, clazz)
+                    .autoCloseStream(true)
+                    .registerConverter(new LocalTimeConverter())
+                    .registerWriteHandler(styleStrategy);
+
+            if (handlers != null && !handlers.isEmpty()) {
+                for (SheetWriteHandler h : handlers) {
+                    builder.registerWriteHandler(h);
+                }
+            }
+
+            ExcelWriter excelWriter = builder.build();
+
+            WriteSheet writeSheet = EasyExcel.writerSheet(DEFAULT_CONFIG.getDefaultSheetName()).build();
+
+            excelWriter.write(data, writeSheet);
+            excelWriter.finish();
+
+            log.info("带合并单元格的商品Excel导出成功，文件名：{}，数据量：{}", fileName, data.size());
+        } catch (IOException e) {
+            log.error("带合并单元格的商品Excel导出失败", e);
+            throw new CzgException("Excel导出失败", e);
+        }
+    }
+
 }

cash-common/cash-common-tools/src/main/java/com/czg/excel/LocalTimeConverter.java

@@ -0,0 +1,47 @@
+package com.czg.excel;
+
+import com.alibaba.excel.converters.Converter;
+import com.alibaba.excel.enums.CellDataTypeEnum;
+import com.alibaba.excel.metadata.GlobalConfiguration;
+import com.alibaba.excel.metadata.data.ReadCellData;
+import com.alibaba.excel.metadata.data.WriteCellData;
+import com.alibaba.excel.metadata.property.ExcelContentProperty;
+
+import java.time.LocalTime;
+import java.time.format.DateTimeFormatter;
+
+/**
+ * @author yjjie
+ * @date 2026/1/28 16:16
+ */
+public class LocalTimeConverter implements Converter<LocalTime> {
+
+    private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("HH:mm:ss");
+
+    @Override
+    public Class<LocalTime> supportJavaTypeKey() {
+        return LocalTime.class;
+    }
+
+    @Override
+    public CellDataTypeEnum supportExcelTypeKey() {
+        return CellDataTypeEnum.STRING;
+    }
+
+    @Override
+    public LocalTime convertToJavaData(ReadCellData<?> cellData, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
+        String stringValue = cellData.getStringValue();
+        if (stringValue == null || stringValue.trim().isEmpty()) {
+            return null;
+        }
+        return LocalTime.parse(stringValue, FORMATTER);
+    }
+
+    @Override
+    public WriteCellData<?> convertToExcelData(LocalTime value, ExcelContentProperty contentProperty, GlobalConfiguration globalConfiguration) {
+        if (value == null) {
+            return new WriteCellData<>("");
+        }
+        return new WriteCellData<>(value.format(FORMATTER));
+    }
+}