poi 3.9读取excel xls xlsx 有jar包

package com.excel; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.util.Date; import java.util.HashMap; import java.util.Map; 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.usermodel.Row; import org.apache.poi.ss.usermodel.Sheet; import org.apache.poi.ss.usermodel.Workbook; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * 读取Excel * @author */ public class ReadExcelUtils { private Logger logger = LoggerFactory.getLogger(ReadExcelUtils.class); private Workbook wb; private Sheet sheet; private Row row; public ReadExcelUtils(String filepath) { if(filepath==null){ return; } String ext = filepath.substring(filepath.lastIndexOf(".")+1).toLowerCase(); try { InputStream is = new FileInputStream(filepath); if("xls".equals(ext)){ wb = new HSSFWorkbook(is); }else if("xlsx".equals(ext)){ wb = new XSSFWorkbook(is); }else{ wb=null; } } catch (FileNotFoundException e) { logger.error("FileNotFoundException", e); } catch (IOException e) { logger.error("IOException", e); } } /** * 读取Excel表格表头的内容 * * @param InputStream * @return String 表头内容的数组 */ public String[] readExcelTitle() throws Exception{ if(wb==null){ throw new Exception("Workbook对象为空！"); } sheet = wb.getSheetAt(0); row = sheet.getRow(0); int colNum = row.getPhysicalNumberOfCells(); System.out.println("colNum:" + colNum); String[] title = new String[colNum]; for (int i = 0; i < colNum; i++) { title[i] = row.getCell(i).getCellFormula(); } return title; } /** * 读取Excel数据内容 * * @param InputStream * @return Map 包含单元格数据内容的Map对象 */ public Map<Integer, Map<Integer,Object>> readExcelContent() throws Exception{ if(wb==null){ throw new Exception("Workbook对象为空！"); } Map<Integer, Map<Integer,Object>> content = new HashMap<Integer, Map<Integer,Object>>(); sheet = wb.getSheetAt(0); // 得到总行数 int rowNum = sheet.getLastRowNum(); row = sheet.getRow(0); int colNum = row.getPhysicalNumberOfCells(); // 正文内容应该从第二行开始,第一行为表头的标题 for (int i = 1; i <= rowNum; i++) { row = sheet.getRow(i); int j = 0; Map<Integer,Object> cellValue = new HashMap<Integer, Object>(); while (j < colNum) { Object obj = getCellFormatValue(row.getCell(j)); cellValue.put(j, obj); j++; } content.put(i, cellValue); } return content; } /** * * 根据Cell类型设置数据 * * @param cell * @return */ private Object getCellFormatValue(Cell cell) { Object cellvalue = ""; if (cell != null) { // 判断当前Cell的Type switch (cell.getCellType()) { case Cell.CELL_TYPE_NUMERIC:// 如果当前Cell的Type为NUMERIC case Cell.CELL_TYPE_FORMULA: { // 判断当前的cell是否为Date if (DateUtil.isCellDateFormatted(cell)) { // 如果是Date类型则，转化为Data格式 // data格式是带时分秒的：2013-7-10 0:00:00 // cellvalue = cell.getDateCellValue().toLocaleString(); // data格式是不带带时分秒的：2013-7-10 Date date = cell.getDateCellValue(); cellvalue = date; } else {// 如果是纯数字 // 取得当前Cell的数值 cellvalue = String.valueOf(cell.getNumericCellValue()); } break; } case Cell.CELL_TYPE_STRING:// 如果当前Cell的Type为STRING // 取得当前的Cell字符串 cellvalue = cell.getRichStringCellValue().getString(); break; default:// 默认的Cell值 cellvalue = ""; } } else { cellvalue = ""; } return cellvalue; } public static void main(String[] args) { try { String filepath = "/Users/zhangjianjun/Desktop/名单.xlsx"; ReadExcelUtils excelReader = new ReadExcelUtils(filepath); Map<Integer, Map<Integer,Object>> map = excelReader.readExcelContent(); System.out.println("获得Excel表格的内容:"); for (int i = 1; i <= map.size(); i++) { System.out.println(map.get(i)); } } catch (FileNotFoundException e) { System.out.println("未找到指定路径的文件!"); e.printStackTrace(); }catch (Exception e) { e.printStackTrace(); } } }