支持多sheet导出

RuoYi

2026-03-31 461dc25c3bf9c1d0bda3a24b36d7da11af5eb740

 ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/poi/ExcelUtil.java

@@ -19,7 +19,7 @@
import java.util.Map;

import java.util.Set;

import java.util.stream.Collectors;

import javax.servlet.http.HttpServletResponse;

import jakarta.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.ArrayUtils;

import org.apache.commons.lang3.RegExUtils;

import org.apache.commons.lang3.reflect.FieldUtils;

@@ -78,6 +78,11 @@
    public static final String FORMULA_REGEX_STR = "=|-|\\+|@";



    public static final String[] FORMULA_STR = { "=", "-", "+", "@" };



    /**

     * 单元格样式缓存

     */

    private Map<String, CellStyle> cellStyleCache = new HashMap<String, CellStyle>();



    /**

     * Excel sheet最大行数，默认65536

@@ -382,7 +387,7 @@
                    Object val = this.getCellValue(row, entry.getKey());



                    // 如果不存在实例则新建.

                    entity = (entity == null ? clazz.newInstance() : entity);

                    entity = (entity == null ? clazz.getDeclaredConstructor().newInstance() : entity);

                    // 从map中得到对应列的field.

                    Field field = (Field) entry.getValue()[0];

                    Excel attr = (Excel) entry.getValue()[1];

@@ -495,6 +500,82 @@
        response.setCharacterEncoding("utf-8");

        this.init(list, sheetName, title, Type.EXPORT);

        exportExcel(response);

    }



    /**

     * 多 Sheet 导出 —— 将多个不同类型的数据集合写入同一 Excel，直接输出到 HttpServletResponse

     *

     * @param response HTTP 响应

     * @param sheets   Sheet 描述列表

     */

    public static void exportMultiSheet(HttpServletResponse response, List<ExcelSheet<?>> sheets)

    {

        if (sheets == null || sheets.isEmpty())

        {

            return;

        }

        SXSSFWorkbook wb = buildWorkbook(sheets);

        try

        {

            response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");

            response.setCharacterEncoding("utf-8");

            wb.write(response.getOutputStream());

        }

        catch (Exception e)

        {

            log.error("多Sheet导出Excel异常{}", e.getMessage());

        }

        finally

        {

            IOUtils.closeQuietly(wb);

        }

    }



    /**

     * 构建多 Sheet Workbook —— 创建 SXSSFWorkbook 并将所有 Sheet 数据写入

     *

     * @param sheets Sheet 描述列表

     * @return 已写入所有 Sheet 数据的 SXSSFWorkbook

     */

    @SuppressWarnings({ "rawtypes", "unchecked" })

    private static SXSSFWorkbook buildWorkbook(List<ExcelSheet<?>> sheets)

    {

        SXSSFWorkbook wb = new SXSSFWorkbook(500);

        for (ExcelSheet<?> excelSheet : sheets)

        {

            ExcelUtil util = new ExcelUtil(excelSheet.getClazz());

            util.initWithWorkbook(wb, excelSheet.getList(), excelSheet.getSheetName(), excelSheet.getTitle());

            util.writeSheet();

        }

        return wb;

    }



    /**

     * 使用外部传入的 Workbook 初始化（多 Sheet 导出专用）

     * 与 init() 的区别：不新建 Workbook，而是在已有 wb 上追加新 Sheet

     *

     * @param wb        已有工作簿

     * @param list      数据集合

     * @param sheetName Sheet 名称

     * @param title     大标题（可为空）

     */

    public void initWithWorkbook(SXSSFWorkbook wb, List<T> list, String sheetName, String title)

    {

        if (list == null)

        {

            list = new ArrayList<T>();

        }

        this.list      = list;

        this.sheetName = sheetName;

        this.title     = title != null ? title : "";

        this.type      = Type.EXPORT;

        this.rownum    = 0;

        this.wb        = wb;

        this.sheet     = wb.createSheet(sheetName);

        createExcelField();

        this.styles    = createStyles(wb);

        createTitle();

        createSubHead();

    }



    /**

@@ -975,6 +1056,7 @@
    /**

     * 添加单元格

     */

    @SuppressWarnings("deprecation")

    public Cell addCell(Excel attr, Row row, T vo, Field field, int column)

    {

        Cell cell = null;

@@ -1042,9 +1124,16 @@
     */

    private CellStyle createCellStyle(CellStyle cellStyle, String format)

    {

        String key = cellStyle.getIndex() + "|" + format;

        CellStyle cached = cellStyleCache.get(key);

        if (cached != null)

        {

            return cached;

        }

        CellStyle style = wb.createCellStyle();

        style.cloneStyleFrom(cellStyle);

        style.setDataFormat(wb.getCreationHelper().createDataFormat().getFormat(format));

        cellStyleCache.put(key, style);

        return style;

    }



@@ -1240,7 +1329,7 @@
    {

        try

        {

            Object instance = excel.handler().newInstance();

            Object instance = excel.handler().getDeclaredConstructor().newInstance();

            Method formatMethod = excel.handler().getMethod("format", new Class[] { Object.class, String[].class, Cell.class, Workbook.class });

            value = formatMethod.invoke(instance, value, excel.args(), cell, this.wb);

        }