前言

对Excel & CSV 文件解析

package com.wind.bird.Utils;import com.opencsv.CSVReader;
import com.opencsv.CSVReaderBuilder;
import org.apache.commons.validator.Var;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.util.NumberToTextConverter;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;import java.io.*;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;/*** @Author windBird* @Date 2023/11/25 21:28* @ClassName FileParseUtil* coding ^_^ every Day* @Desc  excel & csv  parse*/
public class FileParseUtil {private static final Logger log = LoggerFactory.getLogger(FileParseUtil.class);/*** @param file* @return*/public static List<Object[]> readFileToList(MultipartFile file) {String fileName = file.getOriginalFilename();String suffixName = fileName.substring(fileName.lastIndexOf("."));try {switch (suffixName) {case FileTypeEnum.CSV:return parseFileWithCsv(file);case FileTypeEnum.XLS:return readExcelWithXLs(file);case FileTypeEnum.XLSX:return parseExcelWithXlsx(file);default:return null;}} catch (IOException e) {e.printStackTrace();}return new ArrayList<Object[]>();}private static List<Object[]> parseExcelWithXlsx(MultipartFile file) throws IOException {XSSFWorkbook xssfWorkbook = null;List<Object[]> list = new ArrayList<Object[]>();InputStream inputStream = file.getInputStream();try {xssfWorkbook = new XSSFWorkbook(inputStream);XSSFSheet xssfSheet = xssfWorkbook.getSheetAt(0);XSSFRow xssfRow = null;XSSFCell xssfCell = null;Object cellValue = null;for (int i = 1; i <= xssfSheet.getPhysicalNumberOfRows(); i++) {xssfRow = xssfSheet.getRow(i);if (null == xssfRow) {continue;}Object[] values = new Object[xssfSheet.getRow(0).getLastCellNum()];for (int j = 0; j <= xssfRow.getLastCellNum(); j++) {xssfCell = xssfRow.getCell(j);if (null == xssfCell) {continue;}switch (xssfCell.getCellType()) {case Cell.CELL_TYPE_STRING:cellValue = xssfCell.getStringCellValue();break;case Cell.CELL_TYPE_NUMERIC:if (DateUtil.isCellDateFormatted(xssfCell)) {cellValue = DateUtil.getJavaDate(xssfCell.getNumericCellValue());break;} else {cellValue = NumberToTextConverter.toText(xssfCell.getNumericCellValue());break;}case Cell.CELL_TYPE_BOOLEAN:cellValue = xssfCell.getBooleanCellValue();break;case Cell.CELL_TYPE_FORMULA:cellValue = xssfCell.getCellFormula();break;case Cell.CELL_TYPE_BLANK:cellValue = "";break;default:cellValue = cellValue.toString();}values[j] = cellValue;}list.add(values);}return list;} catch (Exception e) {log.error("文件格式有误，请检查：{}", e);return null;} finally {if (null != inputStream) inputStream.close();if (null != xssfWorkbook) xssfWorkbook.close();}}private static List<Object[]> readExcelWithXLs(MultipartFile file) throws IOException {HSSFWorkbook hssfWorkbook = null;List<Object[]> list = new ArrayList<Object[]>();InputStream inputStream = file.getInputStream();try {hssfWorkbook = new HSSFWorkbook(inputStream);HSSFSheet xssfSheet = hssfWorkbook.getSheetAt(0);HSSFRow hssfRow = null;HSSFCell hssfCell = null;Object cellValue = null;for (int i = 1; i <= xssfSheet.getPhysicalNumberOfRows(); i++) {hssfRow = xssfSheet.getRow(i);if (null == hssfRow) {continue;}Object[] values = new Object[xssfSheet.getRow(0).getLastCellNum()];for (int j = 0; j <= hssfRow.getLastCellNum(); j++) {hssfCell = hssfRow.getCell(j);if (null == hssfCell) {continue;}switch (hssfCell.getCellType()) {case Cell.CELL_TYPE_STRING:cellValue = hssfCell.getStringCellValue();break;case Cell.CELL_TYPE_NUMERIC:if (DateUtil.isCellDateFormatted(hssfCell)) {cellValue = DateUtil.getJavaDate(hssfCell.getNumericCellValue());break;} else {cellValue = NumberToTextConverter.toText(hssfCell.getNumericCellValue());break;}case Cell.CELL_TYPE_FORMULA:cellValue = hssfCell.getCellFormula();break;case Cell.CELL_TYPE_BOOLEAN:cellValue = hssfCell.getBooleanCellValue();break;case Cell.CELL_TYPE_BLANK:cellValue = "";break;default:cellValue = cellValue.toString();}values[j] = cellValue;}list.add(values);}return list;} catch (Exception e) {log.error("文件格式有误，请检查：{}", e);return null;} finally {if (null != inputStream) inputStream.close();if (null != hssfWorkbook) hssfWorkbook.close();}}private static List<Object[]> parseFileWithCsv(MultipartFile file) {List<Object[]> list = new ArrayList<>();int i = 0;try {CSVReader csvReader = new CSVReaderBuilder(new BufferedReader(new InputStreamReader(file.getInputStream()))).build();Iterator<String[]> iterator = csvReader.iterator();while (iterator.hasNext()) {String[] next = iterator.next();//去除第一行的表头，从第二行开始if (i >= 1) {list.add(next);}i++;}return list;} catch (Exception e) {log.error("CSV文件读取异常");return list;}}public interface FileTypeEnum {String CSV = ".csv";String XLS = ".xls";String XLSX = ".xlsx";}
}