java 使用POI导入复杂excel表格

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pom.xml依赖

<dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>${poi.version}</version>
</dependency>

上代码：

import com.ruoyi.common.exception.CustomException;
import com.ruoyi.common.utils.DateUtils;
import com.ruoyi.common.utils.StringUtils;
import com.ruoyi.common.utils.file.FileUtils;
import com.ruoyi.system.domain.VehicleInfo;
import com.ruoyi.system.domain.VehicleInsurance;
import com.ruoyi.system.domain.VehicleTotalmile;
import com.ruoyi.system.domain.vo.VehicleInfoImportVo;
import com.ruoyi.system.mapper.sysdict.DictDataMapper;
import com.ruoyi.system.mapper.vehicle.VehicleInfoMapper;
import com.ruoyi.system.mapper.vehicle.VehicleInsuranceMapper;
import com.ruoyi.system.mapper.vehicle.VehicleTotalmileMapper;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Objects;
import java.util.UUID;import static org.apache.poi.ss.usermodel.CellType.*;@Slf4j
@Service
public class VehicleImportService {@Autowiredprivate DictDataMapper dictDataMapper;@Autowiredprivate VehicleInfoMapper vehicleInfoMapper;@Autowiredprivate VehicleInsuranceMapper vehicleInsuranceMapper;@Autowiredprivate VehicleTotalmileMapper vehicleTotalmileMapper;/*** 读取excel文件** @param path 文件流* @param operName 操作人名称* @param sheetIndex    sheet页下标：从0开始* @param startReadLine 开始读取的行:从0开始* @param tailLine      结束行*/public String importVehicleInfo(MultipartFile path, String operName, int sheetIndex, int startReadLine, int tailLine) {Workbook wb = null;File file = null;try {file=File.createTempFile(path.getOriginalFilename(), null);path.transferTo(file);file.deleteOnExit();wb = WorkbookFactory.create(file);} catch (Exception e) {e.printStackTrace();}//读取excel表中的sheet, 参数为sheet的索引值（从0开始）Sheet sheet = wb.getSheetAt(sheetIndex);Row row = null;Boolean save = false;//获取该sheet的最后一行数据的索引int lastRowNum = sheet.getLastRowNum();if (lastRowNum < 2){throw new CustomException("导入模板不正确！");}if (lastRowNum == 2){throw new CustomException("导入车辆数据不能为空！");}int successNum = 0;int failureNum = 0;StringBuilder successMsg = new StringBuilder();StringBuilder failureMsg = new StringBuilder();ArrayList<VehicleInfoImportVo> list = new ArrayList<>();//外循环是循环行，内循环是循环每行的单元格for (int i = 3; i <= lastRowNum; i++) {//车辆信息导入对象VehicleInfoImportVo vehicleInfoImportVo = new VehicleInfoImportVo();//车辆保险对象VehicleInsurance vehicleInsurance = new VehicleInsurance();//商业保险费BigDecimal commercialInsurPrice = BigDecimal.ZERO;//承运险BigDecimal carrierRisk = BigDecimal.ZERO;//交强险保费BigDecimal compulsoryInsurPrice = BigDecimal.ZERO;//商业保险期限String commercialInsurDate = "";//承运险期限String carrierRiskDate = "";//交强险期限String compulsoryInsurDate = "";//保险号数组String[] insurNums = null;//车辆里程对象VehicleTotalmile vehicleTotalmile = new VehicleTotalmile();//根据行索引获取行对象（单元格集合）row = sheet.getRow(i);//遍历行的单元格，并解析for (Cell c : row) {String returnStr = "";String value = "";//设置该单元格的数据的类型为Stringc.setCellType(STRING);boolean isMerge = isMergedRegion(sheet, i, c.getColumnIndex());// 判断是否具有合并单元格if (isMerge) {//如果是合并单元格，就获取合并单元格的值returnStr = getMergedRegionValue(sheet, row.getRowNum(), c.getColumnIndex()).toString();} else {//不是合并单元格直接获取单元格的值returnStr = getCellValue(c).toString();}if (StringUtils.isNotEmpty(returnStr)) {value = returnStr.trim();//封装结果集，一行数据封装为一个对象if (c.getColumnIndex() == 0) {System.out.println("序号："+value);} else if (c.getColumnIndex() == 1) {System.out.println("车牌号："+value);vehicleInfoImportVo.setVehicleNo(value);} else if (c.getColumnIndex() == 2) {System.out.println("车牌颜色："+value);vehicleInfoImportVo.setPlateColor(value);} else if (c.getColumnIndex() == 3) {System.out.println("核定载客数："+value.replaceAll("人", ""));} else if (c.getColumnIndex() == 4) {System.out.println("车辆厂牌："+value);vehicleInfoImportVo.setBrand(value);} else if (c.getColumnIndex() == 5) {System.out.println("车辆型号："+value);vehicleInfoImportVo.setModel(value);} else if (c.getColumnIndex() == 6) {System.out.println("车辆类型："+value);} else if (c.getColumnIndex() == 7) {System.out.println("车辆所有人："+value);vehicleInfoImportVo.setOwnerName(value);} else if (c.getColumnIndex() == 8) {System.out.println("车身颜色："+value);vehicleInfoImportVo.setVehicleColor(value);} else if (c.getColumnIndex() == 9) {System.out.println("发动机号："+value);vehicleInfoImportVo.setEngineId(value);} else if (c.getColumnIndex() == 10) {System.out.println("车架号："+value);vehicleInfoImportVo.setVin(value);} else if (c.getColumnIndex() == 11) {System.out.println("保险公司名称："+value);vehicleInsurance.setInsurCom(value);vehicleInsurance.setVehicleNo(vehicleInfoImportVo.getVehicleNo());} else if (c.getColumnIndex() == 12) {System.out.println("保险号："+value);insurNums = value.split("；");} else if (c.getColumnIndex() == 13) {System.out.println("车船税："+value);} else if (c.getColumnIndex() == 14) {System.out.println("商业保险费："+value);commercialInsurPrice = new BigDecimal(value);} else if (c.getColumnIndex() == 15) {System.out.println("承运险保费："+value);carrierRisk = new BigDecimal(value);} else if (c.getColumnIndex() == 16) {System.out.println("交强险保费："+value);compulsoryInsurPrice = new BigDecimal(value);} else if (c.getColumnIndex() == 17) {System.out.println("保险总金额(人民币元）："+value);} else if (c.getColumnIndex() == 18) {System.out.println("承运险保险期限："+value);carrierRiskDate = value;} else if (c.getColumnIndex() == 19) {System.out.println("交强险保险期限："+value);compulsoryInsurDate = value;} else if (c.getColumnIndex() == 20) {System.out.println("商业险保险期限："+value);commercialInsurDate = value;} else if (c.getColumnIndex() == 21) {System.out.println("年审时间："+value);} else if (c.getColumnIndex() == 22) {System.out.println("行驶公里数："+value);vehicleTotalmile.setVehicleNo(vehicleInfoImportVo.getVehicleNo());vehicleTotalmile.setTotalMile(new BigDecimal(value));}}}//判断一个对象的属性是否都为空， true:都为空  ， false: 不都为空if (!allFieldIsNULL(vehicleInfoImportVo)) {Date date = DateUtils.getNowDate();vehicleInsurance.setUpdateTime(date);vehicleTotalmile.setUpdateTime(date);vehicleInfoImportVo.setUpdateBy(operName);vehicleInfoImportVo.setId(UUID.randomUUID().toString().replaceAll("-",""));try {// 验证是否存在这个车辆VehicleInfo vehicle = vehicleInfoMapper.selectVehicleInfoByVehicleNo(vehicleInfoImportVo.getVehicleNo());if (vehicle == null){vehicleInfoImportVo.setCreateTime(date);VehicleInfo vehicleInfo = new VehicleInfo();// 复制 vehicleInfoImportVo 到 vehicleInfoBeanUtils.copyProperties(vehicleInfoImportVo, vehicleInfo);vehicleInfo.setSeats(Integer.valueOf(vehicleInfoImportVo.getSeats()));if (vehicleInfoMapper.insertVehicleInfo(vehicleInfo) > 0){successNum++;successMsg.append("<br/>" + successNum + "、车辆 " + vehicleInfoImportVo.getVehicleNo() + " 导入成功");} else {log.info("导入车辆信息，插入车辆信息失败，车牌号：{}", vehicleInfoImportVo.getVehicleNo());}} else {vehicleInfoImportVo.setUpdateTime(date);VehicleInfo vehicleInfo = new VehicleInfo();// 复制 vehicleInfoImportVo 到 vehicleInfoBeanUtils.copyProperties(vehicleInfoImportVo, vehicleInfo);vehicleInfo.setSyncflag(0);if (vehicleInfoMapper.updateVehicleInfo(vehicleInfo) > 0){successNum++;successMsg.append("<br/>" + successNum + "、车辆 " + vehicleInfoImportVo.getVehicleNo() + " 更新成功");} else {log.info("导入车辆信息，更新车辆信息失败，车牌号：{}", vehicleInfoImportVo.getVehicleNo());}}} catch (Exception e) {failureNum++;String msg = "<br/>" + failureNum + "、车辆 " + vehicleInfoImportVo.getVehicleNo() + " 导入失败：";failureMsg.append(msg + e.getMessage());log.error(msg, e);}}}if (failureNum > 0) {failureMsg.insert(0, "很抱歉，导入失败！共 " + failureNum + " 条数据格式不正确，错误如下：");throw new CustomException(failureMsg.toString());} else {successMsg.insert(0, "恭喜您，数据已全部导入成功！共 " + successNum + " 条，数据如下：");}return successMsg.toString();}/*** 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*/private static boolean isMergedRegion(Sheet sheet, int row, int column) {//获取该sheet所有合并的单元格int sheetMergeCount = sheet.getNumMergedRegions();//循环判断 该单元格属于哪个合并单元格， 如果能找到对应的，就表示该单元格是合并单元格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  sheet索引 从0开始* @param row    行索引 从0开始* @param column 列索引  从0开始* @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);return getCellValue(fCell);}}}return null;}/*** 获取单元格的值  先确定单元格的类型，然后根据类型 取值** @param cell 单元格* @return*/public static String getCellValue(Cell cell) {if (cell == null) return "";if (cell.getCellType() == STRING) {return cell.getStringCellValue();} else if (cell.getCellType() == BOOLEAN) {return String.valueOf(cell.getBooleanCellValue());} else if (cell.getCellType() == FORMULA) {return cell.getCellFormula();} else if (cell.getCellType() == NUMERIC) {return String.valueOf(cell.getNumericCellValue());}return "";}/*** 判断一个对象的属性是否都为空，** @param obj 对象* @return false : 至少有一个属性不为空， true: 该对象的属性全为空*/public static boolean allFieldIsNULL(Object obj) {Boolean flag = true;//都为空if (null == obj || "".equals(obj)) return flag;try {Field[] declaredFields = obj.getClass().getDeclaredFields();for (Field field : declaredFields) { // 循环该类，取出类中的每个属性field.setAccessible(true);// 把该类中的所有属性设置成 publicObject object = field.get(obj); // object 是对象中的属性if (object instanceof CharSequence) { // 判断对象中的属性的类型，是否都是CharSequence的子类if (!Objects.isNull(object)) { // 如果是他的子类，那么就可以用ObjectUtils.isEmpty进行比较flag = false;//不为空}} else { //如果不是那就直接用null判断if (!(null == object || "".equals(object))) {flag = false;//不为空}}}} catch (Exception e) {e.printStackTrace();}return flag;//false:不都为空}}

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