easypoi excel：Cannot add merged region X to sheet because it overlaps with an existing merged region

easypoi先介绍导入的pom文件的依赖版本：

<dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-base</artifactId><version>4.1.0</version></dependency><dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-web</artifactId><version>4.1.0</version></dependency><dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-annotation</artifactId><version>4.1.0</version></dependency>

我们使用wps导入excel的时候，是没有这个错误的。但是当使用的是office excel的时候就会导致文件的格式会发生变化，如下图：

可以看到一行的数据，占了好多行。针对这种数据，使用

ExcelImportUtil.importExcelMore(inputStream, pojoClass, params);

是导入不进去的，会报错：Cannot add merged region T485:T499 to sheet because it overlaps with an existing merged region (T482:T485)."

那么应该咋修改呢？

ExcelImportUtil.importExcel(inputStream, pojoClass, params);

使用这个方法，就可以避免。但是我们又想保留导入的正确的数据和错误的数据，但是importExcel这个方法的返回值是List<T>

public static <T> List<T> importExcel(InputStream inputstream, Class<?> pojoClass, ImportParams params) throws Exception {return (new ExcelImportService()).importExcelByIs(inputstream, pojoClass, params, false).getList();}public static <T> ExcelImportResult<T> importExcelMore(InputStream inputstream, Class<?> pojoClass, ImportParams params) throws Exception {return (new ExcelImportService()).importExcelByIs(inputstream, pojoClass, params, true);}

那么应该咋办呢？如下代码：

public static <T> ExcelImportResult<T> importExcel(InputStream inputStream, Integer titleRows, Integer headerRows, boolean needVerfiy, Class<T> pojoClass) throws IOException {if (inputStream == null) {return null;}ImportParams params = new ImportParams();params.setTitleRows(titleRows);params.setHeadRows(headerRows);
//        params.setSaveUrl("/excel/");params.setNeedSave(false);params.setNeedVerify(needVerfiy);params.setStartSheetIndex(1);try {
//            return ExcelImportUtil.importExcelMore(inputStream, pojoClass, params);return (new ExcelImportService()).importExcelByIs(inputStream, pojoClass, params, false);} catch (NoSuchElementException e) {throw new IOException("excel文件不能为空");} catch (Exception e) {throw new IOException(e.getMessage());}}

needMore设置为false即可。

源码：

while(true) {if (i >= params.getStartSheetIndex() + params.getSheetNum()) {if (params.isNeedSave()) {this.saveThisExcel(params, pojoClass, isXSSFWorkbook, book);}importResult.setList(result);if (!needMore) {break;}ByteArrayInputStream successIs = new ByteArrayInputStream(baos.toByteArray());try {Workbook successBook = WorkbookFactory.create(successIs);importResult.setWorkbook(this.removeSuperfluousRows(successBook, this.failRow, params));importResult.setFailWorkbook(this.removeSuperfluousRows(book, this.successRow, params));importResult.setFailList(this.failCollection);importResult.setVerfiyFail(this.verifyFail);break;} finally {successIs.close();}}

就到这吧。

我自己的代码，结合了导入正确的数据和错误的数据，并且报出来哪一行错误。记录一下，与人方便。

//easypoi解析excel得到成功的集合和失败的集合Map<String, String> map = new HashMap<>();ExcelImportResult<UploadDataVo> result = ExcelUtils.importExcel(file, 0, 1, true, UploadDataVo.class);List<UploadDataVo> uploadDataVos = result.getList();List<UploadDataVo> failList = result.getFailList()==null?new ArrayList<UploadDataVo>():result.getFailList();ArrayList<Integer> objects = Lists.newArrayList();if (CollectionUtil.isNotEmpty(failList)) {failList.forEach(uploadDataVo -> {objects.add(uploadDataVo.getRowNum());});String collect = failList.stream().map(x -> x.getErrorMsg()).collect(Collectors.joining(","));map.put("message", "提示：" + collect);map.put("fail", "异常数据行号：" + JSONUtil.toJsonStr(objects));}map.put("total", "本次导入共" + (uploadDataVos.size() + failList.size()) + "条数据");map.put("success", "导入成功" + uploadDataVos.size() + "条数据");

@Data
@EqualsAndHashCode
public class UploadDataVo implements IExcelDataModel, IExcelModel , Serializable {private static final long serialVersionUID = 1L;/*** 行号*/private int rowNum;/*** 错误消息*/private String errorMsg;@Excel(name="产品编码")@NotEmpty(message = "[产品编码]不能为空")private String productCode;
}

工具类：

public class ExcelUtils {/*** excel 导出** @param list           数据* @param title          标题* @param sheetName      sheet名称* @param pojoClass      pojo类型* @param fileName       文件名称* @param isCreateHeader 是否创建表头* @param response*/public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName, boolean isCreateHeader, HttpServletResponse response) throws IOException {ExportParams exportParams = new ExportParams(title, sheetName, ExcelType.XSSF);exportParams.setCreateHeadRows(isCreateHeader);defaultExport(list, pojoClass, fileName, response, exportParams);}/*** excel 导出** @param list      数据* @param title     标题* @param sheetName sheet名称* @param pojoClass pojo类型* @param fileName  文件名称* @param response*/public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName, HttpServletResponse response) throws IOException {defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName, ExcelType.XSSF));}/*** excel 导出** @param list         数据* @param pojoClass    pojo类型* @param fileName     文件名称* @param response* @param exportParams 导出参数*/public static void exportExcel(List<?> list, Class<?> pojoClass, String fileName, ExportParams exportParams, HttpServletResponse response) throws IOException {defaultExport(list, pojoClass, fileName, response, exportParams);}/*** excel 导出** @param list     数据* @param fileName 文件名称* @param response*/public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response) throws IOException {defaultExport(list, fileName, response);}/*** 默认的 excel 导出** @param list         数据* @param pojoClass    pojo类型* @param fileName     文件名称* @param response* @param exportParams 导出参数*/private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams) throws IOException {Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, list);downLoadExcel(fileName, response, workbook);}/*** 默认的 excel 导出** @param list     数据* @param fileName 文件名称* @param response*/private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response) throws IOException {Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);downLoadExcel(fileName, response, workbook);}/*** 下载** @param fileName 文件名称* @param response* @param workbook excel数据*/private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) throws IOException {try {response.setCharacterEncoding("UTF-8");response.setHeader("content-Type", "application/vnd.ms-excel");response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName + "." + ExcelTypeEnum.XLSX.getValue(), "UTF-8"));workbook.write(response.getOutputStream());} catch (Exception e) {throw new IOException(e.getMessage());}}/*** excel 导入** @param filePath   excel文件路径* @param titleRows  标题行* @param headerRows 表头行* @param pojoClass  pojo类型* @param <T>* @return*/public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException {if (StringUtils.isBlank(filePath)) {return null;}ImportParams params = new ImportParams();params.setTitleRows(titleRows);params.setHeadRows(headerRows);params.setNeedSave(true);params.setSaveUrl("/excel/");try {return ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);} catch (NoSuchElementException e) {throw new IOException("模板不能为空");} catch (Exception e) {throw new IOException(e.getMessage());}}/*** excel 导入** @param file      excel文件* @param pojoClass pojo类型* @param <T>* @return*/public static <T> ExcelImportResult<T> importExcel(MultipartFile file, Class<T> pojoClass) throws IOException {return importExcel(file, 1, 1, pojoClass);}/*** excel 导入** @param file       excel文件* @param titleRows  标题行* @param headerRows 表头行* @param pojoClass  pojo类型* @param <T>* @return*/public static <T> ExcelImportResult<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException {return importExcel(file, titleRows, headerRows, false, pojoClass);}/*** excel 导入** @param file       上传的文件* @param titleRows  标题行* @param headerRows 表头行* @param needVerfiy 是否检验excel内容* @param pojoClass  pojo类型* @param <T>* @return*/public static <T> ExcelImportResult<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, boolean needVerfiy, Class<T> pojoClass) throws IOException {if (file == null) {return null;}try {return importExcel(file.getInputStream(), titleRows, headerRows, needVerfiy, pojoClass);} catch (Exception e) {throw new IOException(e.getMessage());}}/*** excel 导入** @param inputStream 文件输入流* @param titleRows   标题行* @param headerRows  表头行* @param needVerfiy  是否检验excel内容* @param pojoClass   pojo类型* @param <T>* @return*/public static <T> ExcelImportResult<T> importExcel(InputStream inputStream, Integer titleRows, Integer headerRows, boolean needVerfiy, Class<T> pojoClass) throws IOException {if (inputStream == null) {return null;}ImportParams params = new ImportParams();params.setTitleRows(titleRows);params.setHeadRows(headerRows);
//        params.setSaveUrl("/excel/");params.setNeedSave(false);params.setNeedVerify(needVerfiy);params.setStartSheetIndex(1);try {
//            return ExcelImportUtil.importExcelMore(inputStream, pojoClass, params);return (new ExcelImportService()).importExcelByIs(inputStream, pojoClass, params, false);} catch (NoSuchElementException e) {throw new IOException("excel文件不能为空");} catch (Exception e) {throw new IOException(e.getMessage());}}/*** Excel 类型枚举*/enum ExcelTypeEnum {XLS("xls"), XLSX("xlsx");private String value;ExcelTypeEnum(String value) {this.value = value;}public String getValue() {return value;}public void setValue(String value) {this.value = value;}}
}

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