解析xlsx与xls--使用2012poi.jar

1.导入Jar包：poi-3.8-20120326.jar、poi-ooxml-3.8-20120326.jar、poi-ooxml-schemas-3.8-20120326.jar、xbean.jar、dom4j-1.6.1.jar
类开始================

package servlet;

import java.io.File;

import java.io.FileInputStream;

import java.io.InputStream;

import java.math.BigDecimal;

import java.text.NumberFormat;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

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.ss.util.CellRangeAddress;

import org.apache.poi.xssf.usermodel.XSSFWorkbook;

public class ReadExcleTest {

 public static void main(String[] args) {

  String path = "E:/yy.xls";

  //String path = "E:/yy.xlsx";

  Map<String, List<String[]>> map = getExcle(path);

  List<String[]> list = map.get("Sheet1");

  for (int i = 0; i < list.size(); i++) {

   String[] str = list.get(i);

   for (int j = 0; j < str.length; j++) {

    System.out.print(str[j] + "   |   ");

   }

   System.out.println("");

  }

 }

 /**

  *获得excle的数据

  *

  * @param pathname

  * @return

  */

 public static Map<String, List<String[]>> getExcle(String pathname) {

  InputStream fs = null;

  Workbook wb = null;

  Map<String, List<String[]>> map = new HashMap<String, List<String[]>>();

  try {

   // excle的类型

   String readType = pathname.substring(pathname.lastIndexOf("."));

   File file = new File(pathname);

   if (file.exists()) {

    fs = new FileInputStream(file);

   } else {

    System.out.println("文件不存在！");

   }

   if (readType.equals(".xls")) {

    wb = new HSSFWorkbook(fs);

   } else  {

    wb = new XSSFWorkbook(fs);

   }

   map = getExcleData_xls(wb);

  } catch (Exception e) {

   e.printStackTrace();

  }

  return map;

 }

 /**

  * 获得excle xls格式的数据

  *

  * @param wb

  * @return

  */

 public static Map<String, List<String[]>> getExcleData_xls(Workbook wb) {

  Map<String, List<String[]>> map = new HashMap<String, List<String[]>>();

  try {

   if (wb != null) {

    // sheet个数

    int numSheet = wb.getNumberOfSheets();

    for (int i = 0; i < numSheet; i++) {

     Sheet sheet = wb.getSheetAt(i);

     String sheetname = sheet.getSheetName();

     List<String[]> listData = getSheetData(sheet); // 读取sheet里的数据

     listData = setMergedRegion(sheet, listData);

     map.put(sheetname, listData);

    }

   }

  } catch (Exception e) {

   e.printStackTrace();

  }

  return map;

 }

 /**

  * 获得sheet 里的数据

  *

  * @param sheet

  * @return

  */

 public static List<String[]> getSheetData(Sheet sheet) {

  List<String[]> listData = new ArrayList<String[]>();

  try {

   if (sheet != null) {

    for (int i = 0; i <= sheet.getLastRowNum(); i++) {

     Row row = sheet.getRow(i);

     String[] rowData = getRowData(row);

     listData.add(rowData);

    }

   }

  } catch (Exception e) {

   e.printStackTrace();

  }

  return listData;

 }

 /**

  * 获得row 的数据

  *

  * @param row

  * @return

  */

 public static String[] getRowData(Row row) {

  String[] rowData = null;

  try {

   if (row != null) {

    int numcell = row.getLastCellNum();

    rowData = new String[numcell];

    for (int i = 0; i < numcell; i++) {

     Cell cell = row.getCell(i);

     rowData[i] = getCellData(cell);

    }

   }

  } catch (Exception e) {

   e.printStackTrace();

  }

  return rowData;

 }

 /**

  * 获得单元格的值

  * @param cell

  * @return

  */

 public static String getCellData(Cell cell) {

  String value = null;

  try {

   if (cell != null) {

    switch (cell.getCellType()) {

    case Cell.CELL_TYPE_NUMERIC: // 数值型

     if (DateUtil.isCellDateFormatted(cell)) {

      // 如果是Date类型则 ，获取该Cell的Date值

      value =new SimpleDateFormat("yyyy-MM-dd").format(DateUtil

        .getJavaDate(cell.getNumericCellValue()));

     } else {// 纯数字，这里要判断是否为小数的情况，因为整数在写入时会被加上小数点

      String t = cell.getNumericCellValue() + "";

      BigDecimal n = new BigDecimal(cell

        .getNumericCellValue());

      // 判断是否有小数点

      if (t.indexOf(".") < 0) {

       value = n.intValue() + "";

      } else {

       // 数字格式化对象

       NumberFormat nf = NumberFormat.getInstance();

       // 小数点最大两位

       nf.setMaximumFractionDigits(2);

       // 执行格式化

       value = nf.format(n.doubleValue());

      }

     }

     break;

    case Cell.CELL_TYPE_STRING: // 字符串型

     value = cell.getRichStringCellValue().toString();

     break;

    case Cell.CELL_TYPE_FORMULA:// 公式型

     // 读公式计算值

     value = String.valueOf(cell.getNumericCellValue());

     break;

    case Cell.CELL_TYPE_BOOLEAN:// 布尔

     value = " " + cell.getBooleanCellValue();

     break;

    /* 此行表示该单元格值为空 */

    case Cell.CELL_TYPE_BLANK: // 空值

     value = " ";

     break;

    case Cell.CELL_TYPE_ERROR: // 故障

     value = " ";

     break;

    default:

     value = cell.getRichStringCellValue().toString();

    }

   }

  } catch (Exception e) {

    e.printStackTrace();

  }

  return value;

 }

 /**

  * 处理单元格值相等的单元格

  *

  * @param sheet

  */

 @SuppressWarnings("unused")

 public static List<String[]> setMergedRegion(Sheet sheet,

   List<String[]> list) {

  int num = sheet.getNumMergedRegions();

  List<String[]> listDate = new ArrayList<String[]>();

  try {

   for (int i = 0; i < num; i++) {

    CellRangeAddress rangeAddress = sheet.getMergedRegion(i);

    int firstcell = rangeAddress.getFirstColumn();

    int firstrow = rangeAddress.getFirstRow();

    int lastcell = rangeAddress.getLastColumn();

    int lastrow = rangeAddress.getLastRow();

    // 处理合并行的值

    if (firstcell == lastcell) {

     for (int j = firstrow; j <= lastrow; j++) {

      list.get(j)[firstcell] = list.get(firstrow)[firstcell];

     }

    }

    // 处理合并列的值

    if (firstrow == lastrow) {

     for (int j = firstcell; j <= lastcell; j++) {

      list.get(firstrow)[j] = list.get(firstrow)[j];

     }

    }

    // 处理合并行列

    if (firstcell != lastcell && firstrow != lastrow) {

     for (int j = firstrow; j <= lastrow; j++) {

      for (int k = firstcell; k <= lastcell; k++) {

       list.get(j)[k] = list.get(firstrow)[firstcell];

      }

     }

    }

   }

   listDate = list;

  } catch (Exception e) {

   e.printStackTrace();

  }

  return list;

 }

}

类结束================