easyExcel多sheet页导入

/*** Description: 获取日前交易excel数据** @param file* @return*/
private Map<String,List<SpotDailyDealImportVO>> SpotDailyDealLoadExcelData(MultipartFile file){Map<String,List<SpotDailyDealImportVO>> map = new HashMap<>();try {//获取所有sheet页List<ReadSheet> readSheets = ExcelImportHelper.listSheet(file.getInputStream());List<ReadSheet> arrayList = readSheets.stream().collect(// 将集合先放到 treeSet去重，然后将他们转换成listcollectingAndThen(toCollection(() -> new TreeSet<>(Comparator.comparing(o -> o.getSheetName()))), ArrayList::new));if (arrayList.size() < readSheets.size()){throw new BusinessException("存在相同机组名称!");}if (ObjectUtils.isNotEmpty(readSheets)){//读取数据int i = 0;//从第一页开始读for (ReadSheet readSheet : readSheets){map.put(readSheet.getSheetName(),ExcelImportHelper.loadExcelDataFully(ExcelImportHelper.getExcelTypeByName(file.getOriginalFilename()), file.getInputStream(), i ,MagicNumConstant.ONE, SpotDailyDealImportVO.class));i++;}}else throw new BusinessException("无法获取到sheet页信息！");} catch (IOException e) {log.error("error",e);throw new BusinessException("上传文件格式不正确" + e.getMessage());}if (map.size() == 0){throw new BusinessException("数据异常，没有数据！");}return map;
}

工具类

/** Project Name: fsc* File Name: ExcelImportHelper.java* Class Name: ExcelImportHelper** Copyright 2018 Hengtian Software Inc** Licensed under the Hengtiansoft** http://www.hengtiansoft.com** Unless required by applicable law or agreed to in writing, software* distributed under the License is distributed on an "AS IS" BASIS,* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or* implied.* See the License for the specific language governing permissions and* limitations under the License.*/
package com.hengtiansoft.framework.common.excel;import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelReader;
import com.alibaba.excel.read.metadata.ReadSheet;
import com.hengtiansoft.framework.common.excel.read.XlsReader;
import com.hengtiansoft.framework.common.excel.read.XlsxReader;
import com.hengtiansoft.framework.common.excel.read.handle.ExcelDataHandler;
import com.hengtiansoft.framework.common.excel.read.handle.impl.FullyReadExcelDataHandler;
import lombok.extern.slf4j.Slf4j;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;/*** Description: Excel工具类** @author qianqianzhu1, weiyangzhu* @since 29.09.2018*/
@Slf4j
public final class ExcelImportHelper {public static final String OFFICE_EXCEL_XLS = ".xls";public static final String OFFICE_EXCEL_XLSX = ".xlsx";public static final String OFFICE_EXCEL_XLSM = ".xlsm";private ExcelImportHelper() {}/*** 根据文件扩展名获得Excel文件类型** @param excelName 文件名，包含扩展名* @return Excel类型*/public static ExcelType getExcelTypeByName(String excelName) {if (excelName == null) {throw new IllegalArgumentException("Excel name is null.");}if (excelName.endsWith(OFFICE_EXCEL_XLS)) {return ExcelType.XLS;} else if (excelName.endsWith(OFFICE_EXCEL_XLSX)) {return ExcelType.XLSX;} else if (excelName.endsWith(OFFICE_EXCEL_XLSM)) {return ExcelType.XLSM;} else {throw new IllegalArgumentException("Invalid excel name: " + excelName);}}/*** 将指定Excel文件中第0个Sheet全部读入内存，跳过标题行** @param excelFile Excel文件* @param titleLine  需要跳过的标题行数* @param clazz     数据类描述* @param <T>       数据类型* @return 从Excel中读取的数据列表* @throws IOException IO异常*/public static <T> List<T> loadExcelDataAtSheet0Fully(File excelFile, Integer titleLine, Class<T> clazz) throws IOException {if (excelFile == null) {throw new IllegalArgumentException("Excel file is null.");}ExcelType excelType = getExcelTypeByName(excelFile.getName());return loadExcelDataAtSheet0Fully(excelType, new FileInputStream(excelFile), titleLine, clazz);}/*** 将指定输入流中的Excel文件中第0个Sheet全部读入内存，跳过标题行** @param excelType   Excel文件类型* @param inputStream Excel文件输入流* @param titleLine  需要跳过的标题行数* @param clazz       数据类描述* @param <T>         数据类型* @return 从Excel中读取的数据列表* @throws IOException IO异常*/public static <T> List<T> loadExcelDataAtSheet0Fully(ExcelType excelType, InputStream inputStream, Integer titleLine, Class<T> clazz) throws IOException {return loadExcelDataFully(excelType, inputStream, 0, true, titleLine, clazz);}/*** 将指定输入流中的Excel文件中的数据全部读入内存** @param excelType    Excel文件类型* @param inputStream  Excel文件输入流* @param sheetIndex   需要读取的sheet索引号，从0开始，-1表示读取全部sheet* @param skipFirstRow true表示跳过标题行* @param titleLine  需要跳过的标题行数* @param clazz        数据类描述* @param <T>          数据类型* @return 从Excel中读取的数据列表* @throws IOException IO异常*/public static <T> List<T> loadExcelDataFully(ExcelType excelType, InputStream inputStream, int sheetIndex,boolean skipFirstRow, Integer titleLine, Class<T> clazz) throws IOException {return loadExcelDataFully(excelType, inputStream, sheetIndex, skipFirstRow ? titleLine : 0, clazz);}/*** 将指定输入流中的Excel文件中的数据全部读入内存** @param excelType    Excel文件类型* @param inputStream  Excel文件输入流* @param sheetIndex   需要读取的sheet索引号，从0开始，-1表示读取全部sheet* @param dataStartRow 开始读取数据的行号（包含该行），从0开始* @param clazz        数据类描述* @param <T>          数据类型* @return 从Excel中读取的数据列表* @throws IOException IO异常*/public static <T> List<T> loadExcelDataFully(ExcelType excelType, InputStream inputStream, int sheetIndex,int dataStartRow, Class<T> clazz) throws IOException {FullyReadExcelDataHandler<T> dataHandler = new FullyReadExcelDataHandler<>();loadExcelData(excelType, inputStream, sheetIndex, dataStartRow, clazz, dataHandler);if (dataHandler.hasError()) {String errorMsg = "Reading excel occurs error";if (dataHandler.getErrorSheetName() != null) {errorMsg = errorMsg + " at sheet: " + dataHandler.getErrorSheetName();}if (dataHandler.getErrorRow() != -1) {errorMsg = errorMsg + " row: " + dataHandler.getErrorRow();}if (dataHandler.getErrorCol() != -1) {errorMsg = errorMsg + " col: " + dataHandler.getErrorCol();}throw new IOException(errorMsg, dataHandler.getLastError());}return dataHandler.getData();}/*** 使用读取处理器处理输入流中的Excel文件，以文件流方式读入，可能会占用更多一些内存** @param excelType    Excel类型* @param inputStream  输入流* @param sheetIndex   需要读取的sheet索引号，从0开始，-1表示读取全部sheet* @param dataStartRow 开始读取数据的行号（包含该行），从0开始* @param clazz        数据类描述* @param dataHandler  Excel数据处理器* @param <T>          数据类型*/public static <T> void loadExcelData(ExcelType excelType, InputStream inputStream, int sheetIndex,int dataStartRow, Class<T> clazz, ExcelDataHandler<T> dataHandler) {switch (excelType) {case XLS:XlsReader.loadExcelData(inputStream, sheetIndex, dataStartRow, clazz, dataHandler);break;case XLSX:case XLSM:XlsxReader.loadExcelData(inputStream, sheetIndex, dataStartRow, clazz, dataHandler);break;default:throw new IllegalArgumentException("Invalid excel type: " + excelType);}}/*** 使用读取处理器处理输入流中的Excel文件，以文件方式读入会节约一些内存，发生OOM的概率小一些** @param excelType    Excel类型* @param file         Excel文件* @param sheetIndex   需要读取的sheet索引号，从0开始，-1表示读取全部sheet* @param dataStartRow 开始读取数据的行号（包含该行），从0开始* @param clazz        数据类描述* @param dataHandler  Excel数据处理器* @param <T>          数据类型*/public static <T> void loadExcelData(ExcelType excelType, File file, int sheetIndex,int dataStartRow, Class<T> clazz, ExcelDataHandler<T> dataHandler) {switch (excelType) {case XLS:XlsReader.loadExcelData(file, sheetIndex, dataStartRow, clazz, dataHandler);break;case XLSX:XlsxReader.loadExcelData(file, sheetIndex, dataStartRow, clazz, dataHandler);break;default:throw new IllegalArgumentException("Invalid excel type: " + excelType);}}/*** 获取excel文件所有sheet页* @date 2022/11/25 17:13* @param inputStream 文件流* @return java.util.List<com.alibaba.excel.read.metadata.ReadSheet>*/public static List<ReadSheet> listSheet(InputStream inputStream){if(inputStream == null){throw new RuntimeException("inputStream is null");}ExcelReader build = EasyExcel.read(inputStream).build();List<ReadSheet> readSheets = build.excelExecutor().sheetList();log.info(String.valueOf(readSheets));return readSheets;}
}

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