package cc.mrbird.febs.server.hr.util;
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import java.io.IOException;
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import java.io.InputStream;
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import java.text.DecimalFormat;
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import java.text.SimpleDateFormat;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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import org.apache.poi.hssf.usermodel.HSSFDataFormat;
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import org.apache.poi.hssf.usermodel.HSSFDateUtil;
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import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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import org.apache.poi.ss.usermodel.Cell;
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import org.apache.poi.ss.usermodel.Row;
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import org.apache.poi.ss.usermodel.Sheet;
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import org.apache.poi.ss.usermodel.Workbook;
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import org.apache.poi.xssf.usermodel.XSSFWorkbook;
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public class PoiImportExcel {
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private final static String excel2003L = ".xls"; // 2003- 版本的excel
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private final static String excel2007U = ".xlsx"; // 2007+ 版本的excel
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/**
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* 描述：获取IO流中的数据，组装成List<List<Object>>对象
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*
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* @param in,fileName
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* @return
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* @throws IOException
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*/
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public static List<List<Object>> getListByExcel(InputStream in, String fileName) throws Exception {
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List<List<Object>> list = null;
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// 创建Excel工作薄
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Workbook work = getWorkbook(in, fileName);
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if (null == work) {
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throw new Exception("创建Excel工作薄为空！");
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}
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Sheet sheet = null;
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Row row = null;
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Cell cell = null;
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list = new ArrayList<List<Object>>();
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// 直接获取第一个sheet
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sheet = work.getSheetAt(0);
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if (sheet == null) {
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return list;
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}
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// 取得Excel的总列数,总行数
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int columns = 0;
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Row firstRow = sheet.getRow((short) 0);
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if (firstRow != null) {
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columns = firstRow.getPhysicalNumberOfCells();
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}
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int rows = sheet.getPhysicalNumberOfRows();
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List<Object> dataRow = null;
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// 首行为定义标题的行，数据从第2行开始
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for (int i = 1; i < rows; i++) {
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dataRow = new ArrayList<Object>();
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// 获取行
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row = sheet.getRow(i);
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if (row != null) {
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// columns=row.getPhysicalNumberOfCells();//不在这里设置，通过firstRow来获取列数信息。
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for (int j = 0; j < columns; j++) {
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// 获取某行某列的某一个单元格
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cell = row.getCell(j);
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// 往dataRow存值
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dataRow.add(getCellValue(cell));
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}
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list.add(dataRow);
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} else {
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list.add(new ArrayList<>());
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}
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}
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// 遍历当前sheet中的所有行
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/*
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* int countCellNum = 0; for (int j = sheet.getFirstRowNum(); j <=
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* sheet.getLastRowNum(); j++) { row = sheet.getRow(j); if (row == null ||
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* row.getFirstCellNum() == j) { if (row != null) countCellNum =
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* row.getLastCellNum(); continue; }
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*
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* // 遍历所有的列 List<Object> li = new ArrayList<Object>(); for (int y = row
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* .getFirstCellNum(); y <= countCellNum; y++) { cell = row.getCell(y);
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* li.add(this.getCellValue(cell));
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*
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* } list.add(li); }
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*/
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work.close();
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return list;
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}
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/**
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* 描述：获取IO流中的数据，组装成List<List<List<Object>>>对象,多个sheet
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*
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* @param in,fileName
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* @return
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* @throws IOException
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*/
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public static List<List<List<Object>>> getMulitListByExcel(InputStream in, String fileName) throws Exception {
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List<List<Object>> list = null;
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// 创建Excel工作薄
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Workbook work = getWorkbook(in, fileName);
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if (null == work) {
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throw new Exception("创建Excel工作薄为空！");
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}
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List<List<List<Object>>> returnList = new ArrayList<List<List<Object>>>();
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for (Sheet sheet : work) {
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Row row = null;
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Cell cell = null;
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list = new ArrayList<List<Object>>();
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if (sheet == null) {
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continue;
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}
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// 取得Excel的总列数,总行数
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int columns = 0;
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Row firstRow = sheet.getRow((short) 0);
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if (firstRow != null) {
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columns = firstRow.getPhysicalNumberOfCells();
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}
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int rows = sheet.getPhysicalNumberOfRows();
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List<Object> dataRow = null;
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// 首行为定义标题的行，数据从第2行开始
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for (int i = 1; i < rows; i++) {
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dataRow = new ArrayList<Object>();
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// 获取行
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row = sheet.getRow(i);
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if (row != null) {
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// columns=row.getPhysicalNumberOfCells();//不在这里设置，通过firstRow来获取列数信息。
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for (int j = 0; j < columns; j++) {
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// 获取某行某列的某一个单元格
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cell = row.getCell(j);
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// 往dataRow存值
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dataRow.add(getCellValue(cell));
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}
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list.add(dataRow);
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} else {
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list.add(new ArrayList<>());
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}
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}
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work.close();
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returnList.add(list);
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}
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return returnList;
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}
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/**
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* 描述：根据文件后缀，自适应上传文件的版本
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*
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* @param inStr,fileName
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* @return
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* @throws Exception
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*/
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public static Workbook getWorkbook(InputStream inStr, String fileName) throws Exception {
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Workbook wb = null;
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String fileType = fileName.substring(fileName.lastIndexOf("."));
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if (excel2003L.equals(fileType)) {
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wb = new HSSFWorkbook(inStr); // 2003-
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} else if (excel2007U.equals(fileType)) {
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wb = new XSSFWorkbook(inStr); // 2007+
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} else {
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throw new Exception("解析的文件格式有误！");
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}
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return wb;
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}
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/**
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* 描述：对表格中数值进行格式化
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*
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* @param cell
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* @return
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*/
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@SuppressWarnings("deprecation")
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public static Object getCellValue(Cell cell) {
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try {
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Object value = null;
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if (cell == null) {
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value = "";
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return value;
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}
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DecimalFormat df = new DecimalFormat("0"); // 格式化number String字符
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SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); // 日期格式化
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DecimalFormat df2 = new DecimalFormat("0.00"); // 格式化数字
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switch (cell.getCellType()) {
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case Cell.CELL_TYPE_STRING:
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value = cell.getRichStringCellValue().getString();
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break;
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case Cell.CELL_TYPE_NUMERIC:
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if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、时间格式
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if (cell.getCellStyle().getDataFormat() == HSSFDataFormat.getBuiltinFormat("h:mm")
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|| cell.getCellStyle().getDataFormat() == 176) {
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sdf = new SimpleDateFormat("HH:mm");
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}
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Date date = cell.getDateCellValue();
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value = sdf.format(date);
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} else if (cell.getCellStyle().getDataFormat() == 58) {
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// 处理自定义日期格式：m月d日(通过判断单元格的格式id解决，id的值是58)
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SimpleDateFormat sdf2 = new SimpleDateFormat("MM-dd");
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double cellValue = cell.getNumericCellValue();
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Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(cellValue);
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value = sdf2.format(date);
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} else if (cell.getCellStyle().getDataFormat() == 183 || cell.getCellStyle().getDataFormat() == 177
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|| cell.getCellStyle().getDataFormat() == 181) {
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// 处理自定义日期格式：y年m月d日(通过判断单元格的格式id解决，id的值是183)
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SimpleDateFormat sdf2 = new SimpleDateFormat("yyyy-MM-dd");
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Date date = cell.getDateCellValue();
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value = sdf2.format(date);
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} else {
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if ("General".equals(cell.getCellStyle().getDataFormatString())) {
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value = df.format(cell.getNumericCellValue());
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} else {
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value = df2.format(cell.getNumericCellValue());
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}
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}
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break;
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case Cell.CELL_TYPE_BOOLEAN:
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value = cell.getBooleanCellValue();
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break;
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case Cell.CELL_TYPE_BLANK:
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value = "";
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break;
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default:
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value = cell.getStringCellValue();
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break;
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}
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return value;
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} catch (Exception e) {
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return null;
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}
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}
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}
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