导出Excel边框

yzg-util-db/src/main/java/com/yanzuoguang/excel/ExcelConsole.java

@@ -11,6 +11,7 @@ import com.yanzuoguang.util.table.TableHeadItem;
 import org.apache.poi.hssf.util.HSSFColor;
 import org.apache.poi.ss.usermodel.*;
 import org.apache.poi.ss.util.CellRangeAddress;
+import org.apache.poi.ss.util.RegionUtil;
 import org.apache.poi.xssf.streaming.SXSSFWorkbook;
 
 import java.io.File;
@@ -402,9 +403,9 @@ public class ExcelConsole<T extends Object> implements DbRow<T> {
         }
 
         CellRangeAddress region = new CellRangeAddress(rowStart, rowEnd, columnPos, columnPos);
+        setStyle(region);
+
         sheet.addMergedRegion(region);
-        // 设置合并后的单元格样式
-        sheet.getRow(rowStart).getCell(columnPos).setCellStyle(style);
     }
 
     /**
@@ -520,22 +521,37 @@ public class ExcelConsole<T extends Object> implements DbRow<T> {
         font.setFontName("宋体");
         font.setFontHeightInPoints((short) 10);
         cellStyle.setFont(font);
-
         // 左右居中
         cellStyle.setAlignment(CellStyle.ALIGN_CENTER);
         // 上下居中
         cellStyle.setVerticalAlignment(CellStyle.VERTICAL_CENTER);
+        // 设置自动换行
         cellStyle.setWrapText(true);
+        // 设置单元格的边框颜色．
+        cellStyle.setTopBorderColor(HSSFColor.BLACK.index);
         cellStyle.setLeftBorderColor(HSSFColor.BLACK.index);
-        cellStyle.setBorderLeft((short) 1);
         cellStyle.setRightBorderColor(HSSFColor.BLACK.index);
-        cellStyle.setBorderRight((short) 1);
+        cellStyle.setBottomBorderColor(HSSFColor.BLACK.index);
         // 设置单元格的边框为粗体
+        cellStyle.setBorderTop(CellStyle.BORDER_THIN);
+        cellStyle.setBorderLeft(CellStyle.BORDER_THIN);
+        cellStyle.setBorderRight(CellStyle.BORDER_THIN);
         cellStyle.setBorderBottom(CellStyle.BORDER_THIN);
-        // 设置单元格的边框颜色．
-        cellStyle.setBottomBorderColor(HSSFColor.BLACK.index);
         // 设置单元格的背景颜色．
         cellStyle.setFillForegroundColor(HSSFColor.WHITE.index);
         return cellStyle;
     }
+
+    private void setStyle(CellRangeAddress region) {
+        // 使用RegionUtil类为合并后的单元格添加边框
+        RegionUtil.setBorderTop(style.getBorderTop(), region, sheet, this.workbook);
+        RegionUtil.setBorderLeft(style.getBorderLeft(), region, sheet, this.workbook);
+        RegionUtil.setBorderRight(style.getBorderRight(), region, sheet, this.workbook);
+        RegionUtil.setBorderBottom(style.getBorderBottom(), region, sheet, this.workbook);
+
+        RegionUtil.setTopBorderColor(style.getTopBorderColor(), region, sheet, this.workbook);
+        RegionUtil.setLeftBorderColor(style.getLeftBorderColor(), region, sheet, this.workbook);
+        RegionUtil.setRightBorderColor(style.getRightBorderColor(), region, sheet, this.workbook);
+        RegionUtil.setBottomBorderColor(style.getBottomBorderColor(), region, sheet, this.workbook);
+    }
 }