poi讀取excel兼容(200三、2007)各類數據類型

所需包：

package com.excel.poi;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.ss.usermodel.Cell;
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;


public class ReadExcelPoi {

	/**
	 * 
	 * @param fileName 文件路徑
	 * @param flag 是2003仍是2007 true：2003，false：2007
	 * @throws Exception
	 */
	public static void read(String fileName,boolean flag) throws Exception {
		Workbook wb = null;
		if(flag){//2003
			File f = new File(fileName);
			
			FileInputStream is = new FileInputStream(f);
			POIFSFileSystem fs = new POIFSFileSystem(is);   
			wb = new HSSFWorkbook(fs);
			is.close();
		}else{//2007
			wb = new XSSFWorkbook(fileName);
		}
        
        read(wb);
	}
	
	/**
	 * 
	 * @param is 輸入流
	 * @param flag 是2003仍是2007 true：2003，false：2007
	 * @throws Exception
	 */
	public static void read(InputStream is,boolean flag) throws Exception {
		Workbook wb = null;
		
		if(flag){//2003
			wb = new HSSFWorkbook(is);
		}else{//2007
			wb = new XSSFWorkbook(is);
		}
		
		read(wb);
	}
	
	/**
	 * 具體讀取Excel
	 * @param wb
	 * @throws Exception
	 */
	public static List<List<Map<String,Object>>> read(Workbook wb) throws Exception {
		List<List<Map<String,Object>>> dataList= new ArrayList<List<Map<String,Object>>>();
		for (int k = 0; k < wb.getNumberOfSheets(); k++) {
			List<Map<String,Object>> sheetList=new ArrayList<Map<String,Object>>();
			//sheet
			Sheet sheet = wb.getSheetAt(k);
			int rows = sheet.getPhysicalNumberOfRows();

			for (int r = 0; r < rows; r++) {
				Map<String,Object> map=new HashMap<String,Object>();
				// 定義 row
				Row row = sheet.getRow(r);
				if (row != null) {
					int cells = row.getPhysicalNumberOfCells();

					for (short c = 0; c < cells; c++) {
						
						Cell cell = row.getCell(c);
						if (cell != null) {
							String value = null;

							switch (cell.getCellType()) {

							case Cell.CELL_TYPE_FORMULA:
								//公式類型
								value =cell.getCellFormula();
								break;
							case Cell.CELL_TYPE_NUMERIC:
								if(HSSFDateUtil.isCellDateFormatted(cell)){
									//時間類型
									value =""+cell.getDateCellValue();
								}else{
									//數字類型
									value = String.valueOf(cell.getNumericCellValue());
									Pattern pattern = Pattern.compile("E");
									Matcher matcher = pattern.matcher(value);
									if(matcher.find()){
										int mulriple = Integer.parseInt(value.substring(matcher.end(),value.length()));
										value = value.substring(0,matcher.start());
										String [] values = value.split("\\.");
										if(values != null && values.length > 1){
											String benginStr = values[0];
											String middStr = values[1].substring(0,mulriple);
											String endStr = values[1].substring(mulriple);
											String pointStr = "";
											if(endStr != null && !"".equals(endStr.trim())){
												pointStr = ".";
											}
											value = benginStr+middStr+pointStr+endStr;
										}
										
									}
									else{
										value = ""+cell.getNumericCellValue();
									}
								}
								
								break;

							case Cell.CELL_TYPE_STRING:
								//字符類型
								value = cell.getStringCellValue();
								break;
								
							case Cell.CELL_TYPE_BOOLEAN:
								//BOOLEAN類型
								value =""+cell.getBooleanCellValue();
								
								
								cell.getDateCellValue();
								
								break;

							default:
							}
							
							System.out.println(value);
							map.put("data"+(r+1)+(c+1), value);
							sheetList.add(map);
						}
					}
				}
			}
			dataList.add(sheetList);
		}
		return dataList;
	}

	/**
	 * @param args
	 * @throws Exception 
	 */
	public static void main(String[] args) throws Exception {
		// TODO Auto-generated method stub
		String filePath="E:\\_channelInfo.xls";
		File f = new File(filePath);
		String suffix=filePath.substring(filePath.lastIndexOf("."));
		FileInputStream is = new FileInputStream(f);
		
		System.out.println(f.getName());
		if(suffix.contains(".xlsx")){
			//2003
			read(is,false);
		}else{
			//2007以上
			read(is,true);
		}
	}

}