ExcelReader（解析Excel的工具类）

package cn.com.css.common.util;

import java.io.IOException;

import java.io.InputStream;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFDateUtil;

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.poifs.filesystem.POIFSFileSystem;

public class ExcelReader {

 

 private POIFSFileSystem fs;

 private HSSFWorkbook wb;

 private HSSFSheet sheet;

 private HSSFRow row;

/**

  * 读取Excel表格表头的内容

  *

  * @param InputStream

  * @return String 表头内容的数组

  */

 public String[] readExcelTitle(InputStream is) {

  try {

   fs = new POIFSFileSystem(is);

   wb = new HSSFWorkbook(fs);

  } catch (IOException e) {

   e.printStackTrace();

  }

  sheet = wb.getSheetAt(0);

  row = sheet.getRow(0);

  // 标题总列数

  int colNum = row.getPhysicalNumberOfCells();

  String[] title = new String[colNum];

  for (int i = 0; i < colNum; i++) {

   title[i] = getCellFormatValue(row.getCell((short) i));

  }

  return title;

 }

/**

  * 读取Excel数据内容

  *

  * @param InputStream

  * @return Map 包括单元格数据内容的Map对象

  */

 public Map<Integer, String> readExcelContent(InputStream is) {

  Map<Integer, String> content = new HashMap<Integer, String>();

  String str = "";

  try {

   fs = new POIFSFileSystem(is);

   wb = new HSSFWorkbook(fs);

  } catch (IOException e) {

   e.printStackTrace();

  }

  sheet = wb.getSheetAt(0);

  // 得到总行数

  int rowNum = sheet.getLastRowNum();

  row = sheet.getRow(0);

  int colNum1 = row.getPhysicalNumberOfCells(); // 获取有数据的列的个数

  int colNum = 15;

  // 正文内容应该从第二行開始,第一行为表头的标题

  for (int i = 1; i <= rowNum; i++) {

   row = sheet.getRow(i);

   int j = 0;

while (j < colNum) {

    String cell = getCellFormatValue(row.getCell((short) j)).trim();

    if (cell == "") {

     j++;

     continue;

    }

    str += cell + " ";

    j++;

   }

   str.trim();

   // System.out.println(str);

   content.put(i, str);

   str = "";

  }

  return content;

 }

/**

  * 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 String getStringCellValue(HSSFCell cell) { String strCell = "";

  * switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_STRING: strCell =

  * cell.getStringCellValue(); break; case HSSFCell.CELL_TYPE_NUMERIC:

  * strCell = String.valueOf(cell.getNumericCellValue()); break; case

  * HSSFCell.CELL_TYPE_BOOLEAN: strCell =

  * String.valueOf(cell.getBooleanCellValue()); break; case

  * HSSFCell.CELL_TYPE_BLANK: strCell = ""; break; default: strCell = "";

  * break; } if (strCell.equals("") || strCell == null) { return ""; } if

  * (cell == null) { return ""; } return strCell; }

  */

/**

  * 获取单元格数据内容为日期类型的数据

  *

  * @param cell

  *            Excel单元格

  * @return String 单元格数据内容

  */

 // private String getDateCellValue(HSSFCell cell) {

 // String result = "";

 // try {

 // int cellType = cell.getCellType();

 // if (cellType == HSSFCell.CELL_TYPE_NUMERIC) {

 // Date date = cell.getDateCellValue();

 // result = (date.getYear() + 1900) + "-" + (date.getMonth() + 1)

 // + "-" + date.getDate();

 // } else if (cellType == HSSFCell.CELL_TYPE_STRING) {

 // String date = getStringCellValue(cell);

 // result = date.replaceAll("[年月]", "-").replace("日", "").trim();

 // } else if (cellType == HSSFCell.CELL_TYPE_BLANK) {

 // result = "";

 // }

 // } catch (Exception e) {

 // //System.out.println("日期格式不对!");

 // e.printStackTrace();

 // }

 // return result;

 // }

/**

  * 依据HSSFCell类型设置数据

  *

  * @param cell

  * @return

  */

 private String getCellFormatValue(HSSFCell cell) {

  String cellvalue = "";

  if (cell != null) {

   // 推断当前Cell的Type

   switch (cell.getCellType()) {

   // 假设当前Cell的Type为NUMERIC

   case HSSFCell.CELL_TYPE_NUMERIC: {

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

    break;

   }

   case HSSFCell.CELL_TYPE_FORMULA: {

    // 推断当前的cell是否为Date

    if (HSSFDateUtil.isCellDateFormatted(cell)) {

     // 假设是Date类型则，转化为Data格式

// 方法1：这样子的data格式是带时分秒的：2011-10-12 0:00:00

     // cellvalue = cell.getDateCellValue().toLocaleString();

// 方法2：这样子的data格式是不带带时分秒的：2011-10-12

     Date date = cell.getDateCellValue();

     SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

     cellvalue = sdf.format(date);

}

    // 假设是纯数字

    else {

     // 取得当前Cell的数值

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

    }

    break;

   }

    // 假设当前Cell的Type为STRIN

   case HSSFCell.CELL_TYPE_STRING:

    // 取得当前的Cell字符串

    cellvalue = cell.getRichStringCellValue().getString();

    break;

   // 默认的Cell值

   default:

    cellvalue = " ";

   }

  } else {

   cellvalue = "";

  }

  return cellvalue;

}

}