读取Excel复杂的数据

package com.util;

import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

public class ExcelUtil {
    /**
     * 判断指定的单元格是否是合并单元格
     *
     * @param sheet
     * @param row    行下标
     * @param column 列下标
     * @return
     */
    public static boolean isMergedRegion(Sheet sheet, int row, int column) {
        int sheetMergeCount = sheet.getNumMergedRegions();
        for (int i = 0; i < sheetMergeCount; i++) {
            CellRangeAddress range = sheet.getMergedRegion(i);
            int firstColumn = range.getFirstColumn();
            int lastColumn = range.getLastColumn();
            int firstRow = range.getFirstRow();
            int lastRow = range.getLastRow();
            if (row >= firstRow && row <= lastRow) {
                if (column >= firstColumn && column <= lastColumn) {
                    return true;
                }
            }
        }
        return false;
    }

    /**
     * 获取合并单元格的值
     *
     * @param sheet
     * @param row
     * @param column
     * @return
     */
    public static String getMergedRegionValue(Sheet sheet, int row, int column) {
        int sheetMergeCount = sheet.getNumMergedRegions();

        for (int i = 0; i < sheetMergeCount; i++) {
            CellRangeAddress ca = sheet.getMergedRegion(i);
            int firstColumn = ca.getFirstColumn();
            int lastColumn = ca.getLastColumn();
            int firstRow = ca.getFirstRow();
            int lastRow = ca.getLastRow();

            if (row >= firstRow && row <= lastRow) {

                if (column >= firstColumn && column <= lastColumn) {
                    Row fRow = sheet.getRow(firstRow);
                    Cell fCell = fRow.getCell(firstColumn);
                    fCell.setCellType(CellType.STRING);
                    return getCellValue(fCell);
                }
            }
        }

        return "";
    }

    /**
     * 获取单元格的值
     *
     * @param cell
     * @return
     */
    public static String getCellValue(Cell cell) {

        if (cell == null) {
            return "";
        }
        cell.setCellType(CellType.STRING);
        if (cell == null) return "";

        if (cell.getCellType() == Cell.CELL_TYPE_STRING) {

            return cell.getStringCellValue().trim();

        } else if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) {

            return String.valueOf(cell.getBooleanCellValue()).trim();

        } else if (cell.getCellType() == Cell.CELL_TYPE_FORMULA) {

            return cell.getCellFormula().trim();

        } else if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {

            return String.valueOf(cell.getNumericCellValue()).trim();

        }
        return "";
    }

    public static List<List<String>> getValues(String fileUrl, int sheetNum) {
        List<List<String>> values = new ArrayList<List<String>>();
        try {
            File file = new File(fileUrl);
            InputStream is = null;
            try {
                is = new FileInputStream(file);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
            Workbook workbook = null;
            Sheet sheet = null;

            workbook = WorkbookFactory.create(is);
            int sheetCount = sheetNum - 1; //workbook.getNumberOfSheets();//sheet 数量,可以只读取手动指定的sheet页
//            for(int s=0;s<sheetCount;s++){

            sheet = workbook.getSheetAt(sheetCount); //读取第几个工作表sheet
            int rowNum = sheet.getLastRowNum();//有多少行

            for (int i = 1; i <= rowNum; i++) {
                Row row = sheet.getRow(i);//第i行
                if (row == null) {//过滤空行
                    continue;
                }
                List<String> list = new ArrayList<>();
                int colCount = sheet.getRow(0).getLastCellNum();//用表头去算有多少列，不然从下面的行计算列的话，空的就不算了
                //                for (int j = 0; j < row.getLastCellNum(); j++) {//第j列://+1是因为最后一列是空 也算进去
                for (int j = 0; j < colCount; j++) {//第j列://+1是因为最后一列是空 也算进去
                    Cell cell = row.getCell(j);
                    String cellValue;
                    boolean isMerge = false;
                    if (cell != null) {
                        isMerge = isMergedRegion(sheet, i, cell.getColumnIndex());
                    }
                    //判断是否具有合并单元格
                    if (isMerge) {
                        cellValue = getMergedRegionValue(sheet, row.getRowNum(), cell.getColumnIndex());
                    } else {
                        cellValue = getCellValue(cell);
                    }
                    list.add(cellValue);
                }
                values.add(list);
            }
//            }
            System.out.println(values);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return values;
    }
}

 @Test
    public void testReadOne() {
        String fileUrl = "E:\\officedh\\cai\\docs\\design\\云彩游戏列表.xlsx";
        List<List<String>> values = ExcelUtil.getValues(fileUrl,1);
        String firstValue = "";
        String secondValue = "";
        int firstId = 0;
        int secondId = 0;
        List<Game> games = new ArrayList<>();
        List<GameGroup> gameGroups = new ArrayList<>();
        Timestamp timestamp = new Timestamp(System.currentTimeMillis());

        for (List<String> value : values) {
            for (int i = 0; i < value.size(); i++) {
                String v = value.get(i);
                switch (i) {
                    case 0:
                        if (!v.equals(firstValue)) {
                            firstId++;
                            secondId = 0;
                            firstValue = v;
//                                插入PlayGroup{firstId,firstValue}
                            GameGroup group = new GameGroup();
                            String gameGroupId = String.format("%02d", firstId);
                            group.setGameGroupId(Long.valueOf(gameGroupId));
//                                group.setTags(Long.valueOf(id));
                            group.setCreateTime(timestamp);
                            group.setName(firstValue);
                            group.setDescription("");
                            group.setSn("");
                            gameGroups.add(group);
                        }
                        break;
                    case 1:
                        if (!v.equals(secondValue)) {
                            secondId++;
                            secondValue = v;
                            //插入PlaySection{secondId,secondValue}
                            Game game = new Game();
                            String gameGroupId = String.format("%02d", firstId);
                            String gameId = String.format("%02d%02d", firstId, secondId);
                            game.setGameGroupId(Long.valueOf(gameGroupId));
                            game.setGameId(Long.valueOf(gameId));
                            game.setName(secondValue);
//                                game.setGameType(rank);//游戏类型，1：数字型；2：字符型；3：其他型
//                                game.setBeginTime(rank);//开奖时间
//                                game.setEndTime(rank);//闭奖时间
//                                game.setDescription(rank);//
//                                game.setDuration(rank);//开奖间隔，单位：秒
//                                game.setLockTime(rank);//封存时间，单位：秒
//                                game.setElements(rank);//号码
//                                game.setLogo(rank);//LOGO
//                                game.setSn(rank);
//                                game.setStatus(rank);
//                                game.setTags(rank);
                            game.setCreateTime(timestamp);
                            games.add(game);
                        }
                        break;
                }
            }
        }
        gameRepository.save(games);
        gameGroupRepository.save(gameGroups);
    }