easypoi 模板导入、导出合并单元格功能

参考：

hutool 导出复杂excel(动态合并行和列)

java使用poi读取跨行跨列excel

springboot集成easypoi并使用其模板导出功能和遇到的坑
Easypoi Excel模板功能简要说明

easypoi 模板导出兼容合并单元格功能

ExcelUtil

package com.yymt.utils;import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.TemplateExportParams;
import cn.hutool.core.convert.Convert;
import cn.hutool.core.io.FileUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.core.util.ZipUtil;
import com.yymt.common.constants.CommonConstants;
import com.yymt.exception.RRException;
import com.yymt.exception.ResultEnum;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.NumberFormat;
import java.text.SimpleDateFormat;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;/*** @Author：xielin* @Description: 导入（原始方式，支持读取合并）、导出（模板方式含合并）工具类* @Date：2023/1/11 14:33* @Version: 1.0*/public class ExcelUtil {private Logger logger = LoggerFactory.getLogger(this.getClass());/*** 创建工作簿** @param filePath 文件路径* @return 工作簿* @throws IOException IO异常*/public static Workbook createWorkBook(String filePath) throws IOException {Assert.isTrue(!FileUtil.exist(filePath), ResultEnum.FILE_NOT_FOUND.getMsg());//final Workbook workBook = new HSSFWorkbook(new FileInputStream(new File("test.xls")));if (filePath.toLowerCase().endsWith("xls")) {Workbook book = new HSSFWorkbook(new FileInputStream(new File(filePath)));return book;}if (filePath.toLowerCase().endsWith("xlsx")) {Workbook book = new XSSFWorkbook(new FileInputStream(new File(filePath)));return book;} else {throw new RRException("excel格式不正确");}}/*** 获取表格内容** @param sheet           sheet对象* @param mergedRegionMap 合并单元格信息的Map* @param row             行对象* @param rowIndex        行索引* @param columnIndex     列索引* @return 获取表格内容*/public static String getCellValue(Sheet sheet, Map<String, Integer[]> mergedRegionMap, Row row, int rowIndex, int columnIndex) {//将列对象的行号和列号+下划线组成key去hashmap中查询，不为空说明当前的cell是合并单元列String value = "";Integer[] firstRowNumberAndCellNumber = mergedRegionMap.get(rowIndex + "_" + columnIndex);//如果是合并单元列，就取合并单元格的首行和首列所在位置读数据，否则就是直接读数据if (firstRowNumberAndCellNumber != null) {Row rowTmp = sheet.getRow(firstRowNumberAndCellNumber[0]);Cell cellTmp = rowTmp.getCell(firstRowNumberAndCellNumber[1]);value = parseCell(cellTmp);} else {value = parseCell(row.getCell(columnIndex));}if ("/".equals(value)) {value = "";}return value;}/*** 将存在合并单元格的列记录入put进hashmap并返回** @param sheet sheet对象* @return*/public static Map<String, Integer[]> getMergedRegionMap(Sheet sheet) {Map<String, Integer[]> result = new HashMap<String, Integer[]>();//获取excel中的所有合并单元格信息int sheetMergeCount = sheet.getNumMergedRegions();//遍历处理for (int i = 0; i < sheetMergeCount; i++) {//拿到每个合并单元格，开始行，结束行，开始列，结束列CellRangeAddress range = sheet.getMergedRegion(i);int firstColumn = range.getFirstColumn();int lastColumn = range.getLastColumn();int firstRow = range.getFirstRow();int lastRow = range.getLastRow();//构造一个开始行和开始列组成的数组Integer[] firstRowNumberAndCellNumber = new Integer[]{firstRow, firstColumn};//遍历，将单元格中的所有行和所有列处理成由行号和下划线和列号组成的key，然后放在hashmap中for (int currentRowNumber = firstRow; currentRowNumber <= lastRow; currentRowNumber++) {for (int currentCellNumber = firstColumn; currentCellNumber <= lastColumn; currentCellNumber++) {result.put(currentRowNumber + "_" + currentCellNumber, firstRowNumberAndCellNumber);}}}return result;}/*** 解析表格的值** @param cell 单元格对象* @return 单元格的值*/public static String parseCell(Cell cell) {String temp = "";if (ObjectUtil.isEmpty(cell)) {return temp;}if (cell.getCellType() == CellType.NUMERIC) {short format = cell.getCellStyle().getDataFormat();if (HSSFDateUtil.isCellDateFormatted(cell)) {SimpleDateFormat sdf = null;if (format == 20 || format == 32) {sdf = new SimpleDateFormat("HH:mm");temp = sdf.format(cell.getDateCellValue());} else if (format == 14 || format == 31 || format == 57 || format == 58 || format == 176) {// 处理自定义日期格式：m月d日(通过判断单元格的格式id解决，id的值是58)sdf = new SimpleDateFormat("yyyy-MM-dd");double value = cell.getNumericCellValue();Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(value);temp = sdf.format(date);} else {sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");temp = sdf.format(cell.getDateCellValue());}} else if (format == 57) {// HSSFDateUtil.isCellDateFormatted(cell) 存在误判SimpleDateFormat sdf = null;// 处理自定义日期格式：m月d日(通过判断单元格的格式id解决，id的值是58)sdf = new SimpleDateFormat("yyyy-MM-dd");double value = cell.getNumericCellValue();Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(value);temp = sdf.format(date);} else {temp = NumberFormat.getInstance().format(cell.getNumericCellValue());}} else if (cell.getCellType() == CellType.STRING) {temp = cell.getStringCellValue();} else if (cell.getCellType() == CellType.FORMULA) {temp = cell.getCellFormula();} else if (cell.getCellType() == CellType.BOOLEAN) {temp = String.valueOf(cell.getBooleanCellValue());}return StrUtil.trimToEmpty(temp);}/*** 根据dateStr转换成LocalDateTime* @param dateStr 日期格式字符串* @return LocalDateTime对象*/public static LocalDateTime getLocalDateTime(String dateStr) {if (StrUtil.isNotBlank(dateStr)) {// dateStr如：2009年9月 也需要转成日期，默认是1日if (dateStr.contains("年") && dateStr.contains("月")) {String year = dateStr.substring(0, dateStr.indexOf("年"));String month = dateStr.substring(dateStr.indexOf("年") + 1, dateStr.indexOf("月"));String day = "01";if (dateStr.contains("日")) {day = dateStr.substring(dateStr.indexOf("月") + 1, dateStr.indexOf("日"));}return LocalDate.of(Convert.toInt(year), Convert.toInt(month), Convert.toInt(day)).atStartOfDay();}// dateStr如：2023/1/16return LocalDate.parse(dateStr).atStartOfDay();}return null;}public static Integer formatYesOrNo(String str) {return "是".equals(str) ? 1 : 0;}/**** @param mapList 要导出的数据数据map集合* @param templateExcelName excel模板名称* @param sheetName sheet名称 （默认是excel模板名称）* @param fileName 临时导出的文件名* @return 可访问的文件路径*/public static String handleExport(List<Map<String, Object>> mapList, String templateExcelName,String sheetName,String fileName) {// CommonConstants.TEMP_EXPORT_PATH = "/temp/export/"FileUtil.mkdir(CommonConstants.TEMP_EXPORT_PATH);Map<Integer, Map<String, Object>> sheetMap = new HashMap<>();Map<String, Object> dataMap = new HashMap<>();dataMap.put("mapList", mapList);// 第一个sheetsheetMap.put(0, dataMap);if (StrUtil.isBlank(sheetName)) {sheetName = templateExcelName;}TemplateExportParams params = new TemplateExportParams("static/template/" + templateExcelName + ".xlsx", sheetName);Workbook workbook = ExcelExportUtil.exportExcel(sheetMap, params);String fileAllPath = CommonConstants.TEMP_EXPORT_PATH + fileName;try (FileOutputStream fos = new FileOutputStream(fileAllPath);) {workbook.write(fos);} catch (IOException e) {throw new RRException(e.getLocalizedMessage());}// 压缩文件//  compress(httpServletResponse);// File zip = ZipUtil.zip(FileUtil.file(CommonConstants.TEMP_EXPORT_PATH));// FileUtil.del(CommonConstants.TEMP_EXPORT_PATH);// String filePath = DownloadUtil.getFilePath(zip);// FileUtil.del(zip);String filePath = DownloadUtil.getFilePath(new File(fileAllPath));FileUtil.del(fileAllPath);return filePath;}}

DownloadUtil

package com.yymt.utils;import cn.hutool.core.io.IoUtil;
import cn.hutool.extra.spring.SpringUtil;
import com.yymt.exception.RRException;
import com.yymt.modules.system.service.SysUploadFileService;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.springframework.http.MediaType;
import org.springframework.web.multipart.commons.CommonsMultipartFile;import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map;public class DownloadUtil {/*** 下载文件名重新编码** @param response 响应对象* @param realFileName 真实文件名* @return*/public static void setAttachmentResponseHeader(HttpServletResponse response, String realFileName) throws UnsupportedEncodingException {String percentEncodedFileName = percentEncode(realFileName);StringBuilder contentDispositionValue = new StringBuilder();contentDispositionValue.append("attachment; filename=").append(percentEncodedFileName).append(";").append("filename*=").append("utf-8''").append(percentEncodedFileName);response.addHeader("Access-Control-Allow-Origin", "*");response.addHeader("Access-Control-Expose-Headers", "Content-Disposition,download-filename");response.setHeader("Content-disposition", contentDispositionValue.toString());response.setHeader("download-filename", percentEncodedFileName);response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);response.setCharacterEncoding("utf-8");}/*** 百分号编码工具方法** @param s 需要百分号编码的字符串* @return 百分号编码后的字符串*/public static String percentEncode(String s) throws UnsupportedEncodingException {String encode = URLEncoder.encode(s, StandardCharsets.UTF_8.toString());return encode.replaceAll("\\+", "%20");}public static String getFilePath(File file) {FileItem fileItem = new DiskFileItemFactory().createItem("file",MediaType.MULTIPART_FORM_DATA_VALUE,true,file.getName());try (InputStream inputStream = new FileInputStream(file);OutputStream outputStream = fileItem.getOutputStream()) {// 流转换IoUtil.copy(inputStream, outputStream);} catch (Exception e) {throw new IllegalArgumentException("Invalid file:" + e, e);}CommonsMultipartFile multipartFile = new CommonsMultipartFile(fileItem);SysUploadFileService uploadFileService = SpringUtil.getBean(SysUploadFileService.class);R r = uploadFileService.uploadFile(multipartFile, "");if ( (Integer) r.get("code") != 0) {throw new RRException("文件下载失败");}Map<String,String> data = (Map<String,String>) r.get("data");return data.get("filePath");}
}

导入的调用示例

@Transactional(rollbackFor = Exception.class)public void importBatch(FilePathParams filePathParams) {// 修改换成真实文件路径String filePath = webUploadBase + filePathParams.getFilePath();Workbook workBook = null;List<SchoolBuildingUseSaveParam> list = new ArrayList<>();// 上一次读取的序号（用户去除重复读取数据）Integer lastNo = null;// 序号是否相同的数据Boolean isSameData;try {workBook = ExcelUtil.createWorkBook(filePath);//获取第一个sheetSheet sheet = workBook.getSheetAt(0);//获取合并单元格信息的hashmapMap<String, Integer[]> mergedRegionMap = ExcelUtil.getMergedRegionMap(sheet);//从excel的第7行索行开始，遍历到最后一行（标题行，直接跳过不读取）for (int i = 6; i < sheet.getLastRowNum(); i++) {int j = 0;isSameData = Boolean.FALSE;// 拿到excel的行对象Row row = sheet.getRow(i);if (row == null) {break;}SchoolBuildingUseSaveParam entity = null;// 序号Integer no = Convert.toInt(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));if (ObjectUtil.isEmpty(no)) {break;}if (Objects.equals(no, lastNo)) {isSameData = Boolean.TRUE;} else {lastNo = no;}if (isSameData) {entity = list.get(list.size() - 1);} else {entity = new SchoolBuildingUseSaveParam();// 校区名称entity.setSchoolName(DicUtil.findCodeByTypeAndValue(DictTypeConstants.CAMPUS_NAME, ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++)));// 建筑物名称entity.setBuildingName(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));// 取得方式entity.setAcquisitionMethod(DicUtil.findCodeByTypeAndValue(DictTypeConstants.SCHOOL_BUILDING_USE_MANAGEMENT_ACQUISITION_METHOD, ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++)));// 取得日期entity.setAcquisitionDate(ExcelUtil.getLocalDateTime(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++)));// 权属人entity.setPropertyOwner(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));// 资产价值（万元）entity.setPropertyValue(Convert.toDouble(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++), 0D));// 地上面积（平方米）entity.setOvergroundArea(Convert.toDouble(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++), 0D));// 地下面积（平方米）entity.setUndergroundArea(Convert.toDouble(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++), 0D));// 地上层数entity.setOvergroundFloors(Convert.toDouble(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++), 0D));// 地下层数entity.setUndergroundFloors(Convert.toDouble(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++), 0D));// 房屋权属证明entity.setHouseOwnershipCertificate(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));// 发证日期entity.setReleaseDate(ExcelUtil.getLocalDateTime(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++)));// 房屋所有权证号entity.setHouseOwnershipNumber(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));// 权属面积（平方米）entity.setOwnershipArea(Convert.toDouble(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++), 0D));// 是否BOT模式(1:是,0：否)entity.setBotFlag(ExcelUtil.formatYesOrNo(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++)));// BOT模式期限entity.setBotDate(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));}// 使用情况的保存 （从18列使用单位开始读取）j = 17;// 学校正在自用SchoolBuildingUsageSaveParam schoolBuildingUsageSaveParam1 = new SchoolBuildingUsageSaveParam();schoolBuildingUsageSaveParam1.setUsage(UsageEnum.SCHOOL_PRIVATE_USE.getCode());schoolBuildingUsageSaveParam1.setUseUnit(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));schoolBuildingUsageSaveParam1.setUsePeopleCount(Convert.toInt(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++)));schoolBuildingUsageSaveParam1.setUseArea(Convert.toDouble(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++), 0D));// 出租出借SchoolBuildingUsageSaveParam schoolBuildingUsageSaveParam2 = new SchoolBuildingUsageSaveParam();schoolBuildingUsageSaveParam2.setUsage(UsageEnum.LEND_HIRE.getCode());schoolBuildingUsageSaveParam2.setFloorRange(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));schoolBuildingUsageSaveParam2.setUseArea(Convert.toDouble(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++), 0D));// 暂未有效使用SchoolBuildingUsageSaveParam schoolBuildingUsageSaveParam3 = new SchoolBuildingUsageSaveParam();schoolBuildingUsageSaveParam3.setUsage(UsageEnum.YET_EFFECTIVE_USE.getCode());schoolBuildingUsageSaveParam3.setFloorRange(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));schoolBuildingUsageSaveParam3.setUseArea(Convert.toDouble(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++), 0D));List<SchoolBuildingUsageSaveParam> schoolBuildingUsageSaveParamList = entity.getSchoolBuildingUsageSaveParamList();if (CollUtil.isEmpty(schoolBuildingUsageSaveParamList)) {schoolBuildingUsageSaveParamList = new ArrayList<>();}if (schoolBuildingUsageSaveParam1.isValidOrNot()) {schoolBuildingUsageSaveParamList.add(schoolBuildingUsageSaveParam1);}if (schoolBuildingUsageSaveParam2.isValidOrNot()) {schoolBuildingUsageSaveParamList.add(schoolBuildingUsageSaveParam2);}if (schoolBuildingUsageSaveParam3.isValidOrNot()) {schoolBuildingUsageSaveParamList.add(schoolBuildingUsageSaveParam3);}entity.setSchoolBuildingUsageSaveParamList(schoolBuildingUsageSaveParamList);// 删除最后的或新增实体if (isSameData) {list.remove(list.size() - 1);} else {// 是否老旧危房entity.setOldHouseFlag(ExcelUtil.formatYesOrNo(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++)));// 备注entity.setRemark(ExcelUtil.getCellValue(sheet, mergedRegionMap, row, i, j++));}list.add(entity);}if (CollUtil.isNotEmpty(list)) {list.forEach(e -> insertOrUpdateSchoolBuildingUse(e));}} catch (Exception e) {log.error("error", e.getMessage());throw new RRException("数据导入异常");} finally {IoUtil.close(workBook);}}

导出的模板：

高校校舍使用情况统计表
单位（盖章）：填表人：部门负责人：分管校领导：填表日期：
1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26
序号	校区名称	建筑物名称	取得方式	取得日期	权属人	资产价值(万元）	建筑面积	建筑层数	权属情况	BOT模式	使用情况	是否老旧危房	备注
地上面积	地下面积	地上层数	地下层数	房屋权属证明	发证日期	房屋所有权证号	权属面积	是否BOT模式	BOT模式期限	学校正在自用	出租出借	暂未有效使用
使用单位	使用人数	使用面积	楼层范围	使用面积	楼层范围	使用面积
{{fe: mapList t.no	t.schoolNameValue	t.buildingName	t.acquisitionMethodValue	fd:(t.acquisitionDate;yyyy年MM月)	t.propertyOwner	t.propertyValue	t.overgroundArea	t.undergroundArea	t.overgroundFloors	t.undergroundFloors	t.houseOwnershipCertificate	fd:(t.releaseDate;yyyy年MM月)	t.houseOwnershipNumber	t.ownershipArea	t.botFlagValue	t.botDate	t.usageList.useUnit1	t.usageList.usePeopleCount1	t.usageList.useArea1	t.usageList.floorRange2	t.usageList.useArea2	t.usageList.floorRange3	t.usageList.useArea3	t.oldHouseFlagValue	t.remark}}

导出的调用示例1

    @PostMapping("/exportBatch")@ApiOperation(value = "导出")public R exportBatch(@Validated @RequestBody SchoolBuildingUseExportParam schoolBuildingUseExportParam) {return R.ok().put("data", schoolBuildingUseService.exportBatch(schoolBuildingUseExportParam));}

@ApiModel(description = "校舍使用管理导出参数")
@Data
@NoArgsConstructor
@AllArgsConstructor
public class SchoolBuildingUseExportParam {@ApiModelProperty(value = "部分导出是不能为空")private List<String> idList;@ApiModelProperty(value = "导出类型，1：部分导出，2：全部导出")@NotNull(message = "导出类型不能为空")private Integer exportType;}

public String exportBatch(SchoolBuildingUseExportParam schoolBuildingUseExportParam) {List<String> idList = schoolBuildingUseExportParam.getIdList();List<Long> idLongList = new ArrayList<>();if (schoolBuildingUseExportParam.getExportType() == 1) {Assert.isTrue(ObjectUtil.isEmpty(idList), "请选择要导出的数据");idLongList = idList.stream().map(Long::parseLong).collect(Collectors.toList());}// 查询要导出的数据List<SchoolBuildingUseEntity> schoolBuildingUseEntityList = list(Wrappers.<SchoolBuildingUseEntity>lambdaQuery().in(ObjectUtil.isNotEmpty(idLongList), SchoolBuildingUseEntity::getId, idLongList).orderByDesc(SchoolBuildingUseEntity::getUpdateTime));// Assert.isTrue(CollUtil.isEmpty(schoolBuildingUseEntityList), "暂无数据导出");无数据可以用于下载模板(id传0)// 转换后的AtomicReference<Integer> no = new AtomicReference<>(1);List<Map<String, Object>> mapList = schoolBuildingUseEntityList.stream().map(e -> {SchoolBuildingUseExportVO schoolBuildingUseExportVO = new SchoolBuildingUseExportVO();BeanUtil.copyProperties(e, schoolBuildingUseExportVO);schoolBuildingUseExportVO.setNo(no.getAndSet(no.get() + 1));schoolBuildingUseExportVO.setBotFlagValue(BotFlagEnum.getValueByCode(e.getBotFlag()));schoolBuildingUseExportVO.setOldHouseFlagValue(OldHouseFlagEnum.getValueByCode(e.getOldHouseFlag()));schoolBuildingUseExportVO.setSchoolNameValue(DicUtil.findValueByTypeAndCode(DictTypeConstants.CAMPUS_NAME, e.getSchoolName()));schoolBuildingUseExportVO.setAcquisitionMethodValue(DicUtil.findValueByTypeAndCode(DictTypeConstants.SCHOOL_BUILDING_USE_MANAGEMENT_ACQUISITION_METHOD, e.getAcquisitionMethod()));// 查询使用情况Map<Integer, List<SchoolBuildingUsageEntity>> collectMap = querySchoolBuildingUsageEntityMapList(e.getId());if (ObjectUtil.isNotEmpty(collectMap)) {schoolBuildingUseExportVO.setSchoolPrivateUseList(BeanUtil.copyToList(collectMap.get(UsageEnum.SCHOOL_PRIVATE_USE.getCode()), SchoolBuildingUsageInfoVO.class));schoolBuildingUseExportVO.setLendHireList(BeanUtil.copyToList(collectMap.get(UsageEnum.LEND_HIRE.getCode()), SchoolBuildingUsageInfoVO.class));schoolBuildingUseExportVO.setYetEffectiveUseList(BeanUtil.copyToList(collectMap.get(UsageEnum.YET_EFFECTIVE_USE.getCode()), SchoolBuildingUsageInfoVO.class));// 设置使用情况集合generateSchoolBuildingUsageExportVOList(schoolBuildingUseExportVO);}return BeanUtil.beanToMap(schoolBuildingUseExportVO);}).collect(Collectors.toList());// 临时文件名String fileName = CommonConstants.SCHOOL_BUILDING_USE_TEMPLATE_EXCEL_NAME + StrUtil.UNDERLINE + System.currentTimeMillis() + ".xls";return ExcelUtil.handleExport(mapList, CommonConstants.SCHOOL_BUILDING_USE_TEMPLATE_EXCEL_NAME, null, fileName);
}

导出的调用示例2

 public String exportPropertyCheckCollect(List<Long> propertyCheckCollectIds,HttpServletResponse httpServletResponse) {TemplateExportParams params = new TemplateExportParams("static/template/资产清查固定资产清查表（含明细、汇总）空表.xls", true,"附1-" + LocalDate.now().getYear() + "年赣南医学院固定资产清查明细表","附2-" + LocalDate.now().getYear() + "年赣南医学院固定资产清查汇总表","附3-" + LocalDate.now().getYear() + "年赣南医学院固定资产清查盘盈明细表","附4-" + LocalDate.now().getYear() + "年赣南医学院固定资产清查盘亏明细表");List<PropertyCheckCollect> propertyCheckCollectList = baseMapper.selectBatchIds(propertyCheckCollectIds);Map<Long, List<PropertyCheckCollect>> listMap = propertyCheckCollectList.stream().collect(Collectors.groupingBy(PropertyCheckCollect::getDeptId));Map<Integer, Map<String, Object>> sheetMap = new HashMap<Integer, Map<String, Object>>();Map<String, Object> map = new HashMap<String, Object>();List<Map<String, Object>> maplist = null;for (Map.Entry<Long, List<PropertyCheckCollect>> listEntry : listMap.entrySet()) {List<PropertyCheckCollect> checkCollectList = listEntry.getValue();for (PropertyCheckCollect propertyCheckCollect : checkCollectList) {int num1 = 0;// 根据盘点id查询盘点资产关联表List<PropertyCheckCorr> checkCorrList = propertyCheckCorrMapper.selectList(Wrappers.<PropertyCheckCorr>lambdaQuery().eq(PropertyCheckCorr::getCheckId, propertyCheckCollect.getCheckId()));PropertyExportVO propertyExportVO = null;maplist = new ArrayList<Map<String, Object>>();for (PropertyCheckCorr propertyCheckCorr : checkCorrList) {map = new HashMap<>();map.put("year", LocalDateTime.now().getYear());num1++;propertyExportVO =propertyCheckCorrMapper.selectPropertyByPropertyId(propertyCheckCorr.getPropertyId(), propertyCheckCorr.getCheckId());map.put("deptName", propertyExportVO.getDeptName());// 获取资产的存放位置PropertyVO.PropertyUseInfo propertyUseInfo =propertyUseService.findPropertyUseInfo(propertyCheckCorr.getPropertyId());if (propertyUseInfo != null) {propertyExportVO.setPropertyArea(propertyUseInfo.getPropertyArea());}// 盘点数量propertyExportVO.setCheckNum(checkCorrList.size());propertyExportVO.setNum(num1);// 无盈亏if (CheckStatusEnum.HAVE_INVENTORY.getInventoryStatus() == propertyCheckCorr.getInventoryStatus()) {propertyExportVO.setNoProfitAndLoss("√");// 盘盈} else if (CheckStatusEnum.PROFIT.getInventoryStatus() == propertyCheckCorr.getInventoryStatus()) {propertyExportVO.setProfit("√");// 盘亏} else if (CheckStatusEnum.LOSS.getInventoryStatus() == propertyCheckCorr.getInventoryStatus()) {propertyExportVO.setLoss("√");}JSONObject parseObject = JSONObject.parseObject(JSON.toJSONString(propertyExportVO));maplist.add(parseObject);}map.put("maplist", maplist);// 第一个sheetsheetMap.put(0, map);List<PropertyCheckCorr> checkCorrProfitList = propertyCheckCorrMapper.selectList(Wrappers.<PropertyCheckCorr>lambdaQuery().eq(PropertyCheckCorr::getCheckId, propertyCheckCollect.getCheckId()).eq(PropertyCheckCorr::getInventoryStatus, CheckStatusEnum.PROFIT.getInventoryStatus()));map = new HashMap<>();maplist = new ArrayList<Map<String, Object>>();map.put("year", LocalDateTime.now().getYear());JSONObject parseObject = null;int num3 = 0;if (CollectionUtils.isNotEmpty(checkCorrProfitList)) {for (PropertyCheckCorr propertyCheckCorr : checkCorrProfitList) {propertyExportVO =propertyCheckCorrMapper.selectPropertyByPropertyId(propertyCheckCorr.getPropertyId(), propertyCheckCorr.getCheckId());map.put("deptName", propertyExportVO.getDeptName());// 获取资产的存放位置PropertyVO.PropertyUseInfo propertyUseInfo =propertyUseService.findPropertyUseInfo(propertyCheckCorr.getPropertyId());if (propertyUseInfo != null) {propertyExportVO.setPropertyArea(propertyUseInfo.getPropertyArea());}// 盘点数量propertyExportVO.setCheckNum(checkCorrList.size());num3++;propertyExportVO.setNum(num3);propertyExportVO.setProfit("√");parseObject = JSONObject.parseObject(JSON.toJSONString(propertyExportVO));maplist.add(parseObject);}}map.put("maplist", maplist);// 第三个sheetsheetMap.put(2, map);List<PropertyCheckCorr> checkCorrLossList = propertyCheckCorrMapper.selectList(Wrappers.<PropertyCheckCorr>lambdaQuery().eq(PropertyCheckCorr::getCheckId, propertyCheckCollect.getCheckId()).eq(PropertyCheckCorr::getInventoryStatus, CheckStatusEnum.LOSS.getInventoryStatus()));map = new HashMap<>();maplist = new ArrayList<Map<String, Object>>();map.put("year", LocalDateTime.now().getYear());int num4 = 0;if (CollectionUtils.isNotEmpty(checkCorrLossList)) {for (PropertyCheckCorr propertyCheckCorr : checkCorrLossList) {propertyExportVO =propertyCheckCorrMapper.selectPropertyByPropertyId(propertyCheckCorr.getPropertyId(), propertyCheckCorr.getCheckId());map.put("deptName", propertyExportVO.getDeptName());// 获取资产的存放位置PropertyVO.PropertyUseInfo propertyUseInfo =propertyUseService.findPropertyUseInfo(propertyCheckCorr.getPropertyId());if (propertyUseInfo != null) {propertyExportVO.setPropertyArea(propertyUseInfo.getPropertyArea());}// 盘点数量propertyExportVO.setCheckNum(checkCorrList.size());num4++;propertyExportVO.setNum(num4);propertyExportVO.setLoss("√");parseObject = JSONObject.parseObject(JSON.toJSONString(propertyExportVO));maplist.add(parseObject);}}map.put("maplist", maplist);// 第四个sheetsheetMap.put(3, map);// 组装第二个sheet数据map = new HashMap<>();map.put("year", LocalDate.now().getYear());map.put("deptName", propertyExportVO.getDeptName());map.put("checkNum", propertyExportVO.getCheckNum());if (CollectionUtils.isNotEmpty(checkCorrList)) {// 查询资产的总金额List<Long> propertyIdList = checkCorrList.stream().map(PropertyCheckCorr::getPropertyId).collect(Collectors.toList());BigDecimal totalMoney = propertyService.sumAllPropertyMoney(propertyIdList);map.put("totalMoney", totalMoney);PropertyCheck propertyCheck = propertyCheckService.getById(checkCorrList.get(0).getCheckId());map.put("checkFinishTime", propertyCheck.getCheckFinishTime());}// 查询无盈亏台数List<PropertyCheckCorr> checkCorrNoProfitAndLossList = propertyCheckCorrMapper.selectList(Wrappers.<PropertyCheckCorr>lambdaQuery().eq(PropertyCheckCorr::getCheckId, propertyCheckCollect.getCheckId()).eq(PropertyCheckCorr::getInventoryStatus, CheckStatusEnum.HAVE_INVENTORY.getInventoryStatus()));if (CollectionUtils.isNotEmpty(checkCorrNoProfitAndLossList)) {map.put("noProfitAndLoss", checkCorrNoProfitAndLossList.size());List<Long> propertyIds = checkCorrNoProfitAndLossList.stream().map(PropertyCheckCorr::getPropertyId).collect(Collectors.toList());BigDecimal noProfitAndLossMoney = propertyService.sumAllPropertyMoney(propertyIds);map.put("noProfitAndLossMoney", noProfitAndLossMoney);} else {map.put("noProfitAndLoss", 0);map.put("noProfitAndLossMoney", 0);}// 盘盈台数if (CollectionUtils.isNotEmpty(checkCorrProfitList)) {map.put("profit", checkCorrProfitList.size());} else {map.put("profit", 0);}// 盘亏台数 和盘亏总金额if (CollectionUtils.isNotEmpty(checkCorrLossList)) {map.put("loss", checkCorrLossList.size());List<Long> propertyIds = checkCorrLossList.stream().map(PropertyCheckCorr::getPropertyId).collect(Collectors.toList());BigDecimal lossMoney = propertyService.sumAllPropertyMoney(propertyIds);map.put("lossMoney", lossMoney);} else {map.put("loss", 0);map.put("lossMoney", 0);}// 第二个sheetsheetMap.put(1, map);Workbook workbook = ExcelExportUtil.exportExcel(sheetMap, params);File savefile = new File("/tmp/excel/");if (!savefile.exists()) {savefile.mkdirs();}FileOutputStream fos = null;try {fos = new FileOutputStream("/tmp/excel/" + propertyCheckCollect.getCollectName()+ "资产清查固定资产清查表（含明细、汇总）表.xls");workbook.write(fos);} catch (IOException e) {log.error("导出盘点汇总报表异常: {}", e.getLocalizedMessage(), e);} finally {try {if (fos != null) {fos.close();}} catch (IOException e) {e.printStackTrace();}}}}// 压缩文件// compress(httpServletResponse);File zip = ZipUtil.zip(FileUtil.file("/tmp/excel/"));FileUtil.del("/tmp/excel/");String filePath = DownloadUtil.getFilePath(zip);FileUtil.del(zip);return filePath;}private void compress(HttpServletResponse httpServletResponse) {File zip = ZipUtil.zip(FileUtil.file("/tmp/excel/"));FileUtil.del("/tmp/excel/");FileInputStream fis = null;ServletOutputStream outputStream = null;try {DownloadUtil.setAttachmentResponseHeader(httpServletResponse,"资产清查固定资产清查表（含明细、汇总）表.zip");fis = new FileInputStream(zip);outputStream = httpServletResponse.getOutputStream();byte[] buffer = new byte[1024];int read = -1;while ((read = fis.read(buffer)) != -1) {outputStream.write(buffer, 0, read);}} catch (IOException e) {log.error("下载盘点汇总报表异常: {}", e.getLocalizedMessage(), e);} finally {try {if (fis != null) {fis.close();}if (outputStream != null) {outputStream.close();}FileUtil.del(zip);} catch (IOException e) {e.printStackTrace();}}}

扩展其他

不使用模板的导出，使用@ExcelCollection可以自动合并单元格

sheet.addMergedRegion(new Region(2,(short)0,3,(short )0));
//跨两行占一列 ce.setCellStyle(style); HSSFCell ce1=row.createCell(1);
//姓名 ce1.setCell

    public static void main(String[] args) throws IOException {export1();}@GetMapping("/goods")public static void export1() throws IOException {List<UserGoodsDto> userGoodsDtos = new ArrayList<>();UserGoodsDto userGoodsDto = new UserGoodsDto();userGoodsDto.setUserName("name1");List<UserGoods> userGoodsList = new ArrayList<>();UserGoods userGoods = new UserGoods();userGoods.setId(1);userGoods.setGoodsName("name0");userGoods.setGoodsAddress("add");userGoods.setCreatedTime(new Date());UserGoods userGoods2 = new UserGoods();userGoods2.setId(2);userGoods2.setGoodsName("name1");userGoods2.setGoodsAddress("add2");userGoods2.setCreatedTime(new Date());userGoodsList.add(userGoods);userGoodsList.add(userGoods2);userGoodsDto.setUserGoodsList(userGoodsList);//***UserGoodsDto userGoodsDto2 = new UserGoodsDto();userGoodsDto2.setUserName("name1");List<UserGoods> userGoodsList2 = new ArrayList<>();userGoodsList2.add(new UserGoods().setId(3).setGoodsName("name2").setGoodsAddress("add2").setCreatedTime(new Date()));userGoodsList2.add(new UserGoods().setId(4).setGoodsName("name3").setGoodsAddress("add2").setCreatedTime(new Date()));userGoodsDto2.setUserGoodsList(userGoodsList2);List<UserGoodsTest> userGoodsTestList = new ArrayList<>();userGoodsTestList.add(new UserGoodsTest().setId(4).setGoodsName("name3Test").setGoodsAddress("add2").setCreatedTime(new Date()));userGoodsDto2.setUserGoodsTestList(userGoodsTestList);userGoodsDtos.add(userGoodsDto);userGoodsDtos.add(userGoodsDto2);System.out.println(userGoodsDtos);ExportParams exportParams = new ExportParams("双十一客户下单情况", null);Workbook workbook = ExcelExportUtil.exportExcel(exportParams, UserGoodsDto.class, userGoodsDtos);// ExcelExportEntity excelExportEntity = new ExcelExportEntity();// ExcelExportUtil.exportExcel(exportParams, , userGoodsDtos);String fileAllPath = CommonConstants.TEMP_EXPORT_PATH + "1.xls";try (FileOutputStream fos = new FileOutputStream(fileAllPath);) {workbook.write(fos);} catch (IOException e) {throw new RRException(e.getLocalizedMessage());}// ExcelExportUtil.exportExcel(userGoodsDtos,UserGoodsDto.class,"测试",exportParams,response);}@Data
@Accessors(chain = true)
class UserGoodsDto {@Excel(name = "用户名", needMerge = true)private String userName;@ExcelCollection(name = "商品")private List<UserGoods> userGoodsList;@ExcelCollection(name = "商品2")private List<UserGoodsTest> userGoodsTestList;
}@Data
@Accessors(chain = true)
class UserGoods {private Integer id;@Excel(name = "商品名")private String goodsName;@Excel(name = "收货地址")private String goodsAddress;@Excel(name = "下单时间", exportFormat = "yyyy-MM-dd HH:mm:ss")private Date createdTime;
}@Data
@Accessors(chain = true)
class UserGoodsTest {private Integer id;@Excel(name = "商品名test")private String goodsName;@Excel(name = "收货地址test")private String goodsAddress;@Excel(name = "下单时间test", exportFormat = "yyyy-MM-dd HH:mm:ss")private Date createdTime;
}

oodsDto.class,“测试”,exportParams,response);
}

@Data
@Accessors(chain = true)
class UserGoodsDto {
@Excel(name = “用户名”, needMerge = true)
private String userName;
@ExcelCollection(name = “商品”)
private List userGoodsList;
@ExcelCollection(name = “商品2”)
private List userGoodsTestList;
}

@Data
@Accessors(chain = true)
class UserGoods {
private Integer id;
@Excel(name = “商品名”)
private String goodsName;
@Excel(name = “收货地址”)
private String goodsAddress;
@Excel(name = “下单时间”, exportFormat = “yyyy-MM-dd HH:mm:ss”)
private Date createdTime;
}

@Data
@Accessors(chain = true)
class UserGoodsTest {
private Integer id;
@Excel(name = “商品名test”)
private String goodsName;
@Excel(name = “收货地址test”)
private String goodsAddress;
@Excel(name = “下单时间test”, exportFormat = “yyyy-MM-dd HH:mm:ss”)
private Date createdTime;
}

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