POI处理excel日期格式问题（xlsx）

               

package com.wonders.task.excel.util;import com.wonders.task.excel.model.SendBo;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 java.io.File;import java.io.FileInputStream;import java.text.SimpleDateFormat;import java.util.ArrayList;import java.util.List;import java.util.regex.Matcher;import java.util.regex.Pattern;/** * Created with IntelliJ IDEA. * User: zhoushun * Date: 2014/12/6 * Time: 20:25 * To change this template use File | Settings | File Templates. */public class PoiUtil {    private static String excel2007 = "D:\\all.xlsx";    private static void setCode(SendBo bo){        Pattern pattern = Pattern.compile("(\\S+)\\((\\d+)\\)(\\d+)号");        String sendId = bo.getSendId();        if(sendId == null || sendId.length() == 0){            bo.setCode1("");bo.setCode2("");bo.setCode3("");        }else{            Matcher matcher = pattern.matcher(sendId);            if(matcher.find()){                bo.setCode1(matcher.group(1));                bo.setCode2(matcher.group(2));                bo.setCode3(matcher.group(3));            }        }    }    public static List<SendBo> readExcel2007(){        List<SendBo> list = new ArrayList<SendBo>();        try{            File excelFile = new File(excel2007);            FileInputStream is = new FileInputStream(excelFile);// 获取文件输入流            XSSFWorkbook workbook2007 = new XSSFWorkbook(is);// 创建Excel2003文件对象            XSSFSheet sheet = workbook2007.getSheetAt(0);// 取出第一个工作表，索引是0            // 开始循环遍历行，表头不处理，从1开始            for (int i = 1; i <= sheet.getLastRowNum(); i++) {                XSSFRow row = sheet.getRow(i);// 获取行对象                if (row == null) {// 如果为空，不处理                    continue;                }                SendBo bo = new SendBo();                // 循环遍历单元格                for (int j = 0; j < row.getLastCellNum(); j++) {                    XSSFCell cell = row.getCell(j);// 获取单元格对象                    switch(j){                        case 0 :                            bo.setSendDept(getStringCellValue(cell).trim());                            break;                        case 1 :                            bo.setSendId(getStringCellValue(cell).trim());                            break;                        case 2 :                            bo.setSendDate(getStringCellValue(cell).trim());                            setCode(bo);                            break;                        case 3 :                            bo.setTitle(getStringCellValue(cell).trim());                            break;                        case 4 :                            bo.setSendMain(getStringCellValue(cell).trim());                            break;                        case 5 :                            break;                        case 6 :                            break;                        default:                            break;                    }                }                list.add(bo);            }        }catch(Exception e){}        return list;    }    /**     * 获取单元格数据内容为字符串类型的数据     *     * @param cell Excel单元格     * @return String 单元格数据内容     */    private static String getStringCellValue(XSSFCell cell) {        String strCell = "";        switch (cell.getCellType()) {            case XSSFCell.CELL_TYPE_STRING:                strCell = cell.getStringCellValue();                break;            case XSSFCell.CELL_TYPE_NUMERIC:                if (XSSFDateUtil.isCellDateFormatted(cell)) {                    //  如果是date类型则 ，获取该cell的date值                    strCell = new SimpleDateFormat("yyyy-MM-dd").format(XSSFDateUtil.getJavaDate(cell.getNumericCellValue()));                } else { // 纯数字                    strCell = String.valueOf(cell.getNumericCellValue());                }                    break;            case XSSFCell.CELL_TYPE_BOOLEAN:                strCell = String.valueOf(cell.getBooleanCellValue());                break;            case XSSFCell.CELL_TYPE_BLANK:                strCell = "";                break;            default:                strCell = "";                break;        }        if (strCell.equals("") || strCell == null) {            return "";        }        if (cell == null) {            return "";        }        return strCell;    }    public static void main(String[] args){        String s = "沪地铁(2014)22号";        Pattern pattern = Pattern.compile("(\\S+)\\((\\d+)\\)(\\d+)号");        Matcher matcher = pattern.matcher(s);        if(matcher.find()){            int gc = matcher.groupCount();            for(int i = 0; i <= gc; i++)                System.out.println("group " + i + " :" + matcher.group(i));        }        //readExcel2007();    }}

自定义处理日期：

package com.wonders.task.excel.util;import org.apache.poi.ss.usermodel.DateUtil;import java.util.Calendar;/** * Created with IntelliJ IDEA. * User: zhoushun * Date: 2014/12/7 * Time: 0:36 * To change this template use File | Settings | File Templates. */public class XSSFDateUtil extends DateUtil {    protected static int absoluteDay(Calendar cal, boolean use1904windowing) {        return DateUtil.absoluteDay(cal, use1904windowing);    }}

           

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