使用easypoi 根据模板横向导出excel并合并横向单元格

&lt;dependency&gt;
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-base</artifactId>
            <version>4.1.2</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-web</artifactId>
            <version>4.1.2</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-annotation</artifactId>
            <version>4.1.2</version>
        </dependency>

二、excel 模板如图：

三、将数据填充为map，调用导出方法

Map<String, Object> data = new HashMap<String, Object>(3);
        data.put("content", sb.toString());
        data.put("indexNames", indexNames);
        Map<String, Object> maps = new HashMap<String, Object>(2);
        maps.put("indexManage", data);
        File file = new File(filePath);
        if (!file.exists()) {
            // 路径不存在
            file.mkdirs();
        }
        ExcelOutUtil.exportIndexToDirectByTemp(indexNames.size(), maps, "file/指标生成模板.xlsx", formulaIdIn.getFormulaInfoId() + "指标模板.xlsx", new Integer[]{1}, filePath);

四、exportIndexToDirectByTemp具体内容为：

public static void exportIndexToDirectByTemp(Integer indexSize,Map<String, Object> param, String path, String fileName, Integer[] sheetNums, String direct) {
        OutputStream out = null;
        try {
            TemplateExportParams params = new TemplateExportParams(path, true);
            //要使用横向遍历必须设置为true
            params.setColForEach(true);
            params.setStyle(ExcelStyleType.BORDER.getClazz());
            //params.setSheetNum(new Integer[]{1, 2, 3, 4});
            params.setSheetNum(sheetNums);
            Workbook book = ExcelExportUtil.exportExcel(params, param);
            setCell(book,indexSize,0);
            setCell(book,indexSize,1);
            exportToDirect(direct, book, fileName);
        } catch (Exception e) {
            throw new RuntimeException("导出异常", e);
        }
    }

//设置边框样式并合并单元格
public static void setCell(Workbook book,Integer indexSize,Integer rowNum){
        //CellRangeAddress(第几行开始，第几行结束，第几列开始，第几列结束)
        CellRangeAddress craOne = new CellRangeAddress(rowNum, rowNum, 0, indexSize+1);
        Sheet sheet = book.getSheetAt(0);
        sheet.addMergedRegion(craOne);
        Row row = sheet.getRow(rowNum);
        CellStyle style = book.createCellStyle();
        // 设置边框样式
        style.setBorderTop(BorderStyle.THIN);
        style.setBorderBottom(BorderStyle.THIN);
        style.setBorderLeft(BorderStyle.THIN);
        style.setBorderRight(BorderStyle.THIN);
        for (int i = 1; i <= indexSize+1; i++) {
            Cell cell = row.getCell(i);
            if (cell == null) {
                cell = row.createCell(i);
            }
            cell.setCellStyle(style);
        }
    }