读取新老版本的Excel，XLS与XLSX

package cn.xxxx.tools;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
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;
import org.apache.xmlbeans.impl.piccolo.io.FileFormatException;

public class ReadExcelTest {

    private static final String EXTENSION_XLS = "xls";
    private static final String EXTENSION_XLSX = "xlsx";

    /***
     * <pre>
     * 取得Workbook对象(xls和xlsx对象不同,不过都是Workbook的实现类)
     *   xls:HSSFWorkbook
     *   xlsx：XSSFWorkbook
     * @param filePath
     * @return
     * @throws IOException
     * </pre>
     */
    private Workbook getWorkbook(String filePath) throws IOException {
        Workbook workbook = null;
        InputStream is = new FileInputStream(filePath);
        if (filePath.endsWith(EXTENSION_XLS)) {
            workbook = new HSSFWorkbook(is);
        } else if (filePath.endsWith(EXTENSION_XLSX)) {
            workbook = new XSSFWorkbook(is);
        }
        return workbook;
    }

    /**
     * 文件检查
     * @param filePath
     * @throws FileNotFoundException
     * @throws FileFormatException
     */
    private void preReadCheck(String filePath) throws FileNotFoundException, FileFormatException {
        // 常规检查
        File file = new File(filePath);
        if (!file.exists()) {
            throw new FileNotFoundException("传入的文件不存在：" + filePath);
        }

        if (!(filePath.endsWith(EXTENSION_XLS) || filePath.endsWith(EXTENSION_XLSX))) {
            throw new FileFormatException("传入的文件不是excel");
        }
    }

    /**
     * 读取excel文件内容
     * @param filePath
     * @throws FileNotFoundException
     * @throws FileFormatException
     */
    public void readExcel(String filePath,List<String[]> arrs) throws FileNotFoundException, FileFormatException {
        // 检查
        this.preReadCheck(filePath);
        // 获取workbook对象
        Workbook workbook = null;
        
        try {
            workbook = this.getWorkbook(filePath);
            // 读文件 一个sheet一个sheet地读取
            for (int numSheet = 0; numSheet < workbook.getNumberOfSheets(); numSheet++) {
                Sheet sheet = workbook.getSheetAt(numSheet);
                if (sheet == null) {
                    continue;
                }
                //System.out.println("=======================" + sheet.getSheetName() + "=========================");

                int firstRowIndex = sheet.getFirstRowNum();
                int lastRowIndex = sheet.getLastRowNum();

                // 读取首行 即,表头
                String[] strArr=new String[3];
                Row firstRow = sheet.getRow(firstRowIndex);
               /*
                for (int i = firstRow.getFirstCellNum(); i <= firstRow.getLastCellNum(); i++) {
                    Cell cell = firstRow.getCell(i);
                    String cellValue = this.getCellValue(cell, true);
                    //System.out.print(i+": "+" " + cellValue + "\t");
                    strArr[i]=cellValue;
                }
                arrs.add(strArr);*/
                //System.out.println("");

                // 读取数据行
                for (int rowIndex = firstRowIndex + 1; rowIndex <= lastRowIndex; rowIndex++) {
                	strArr=new String[7];
                    Row currentRow = sheet.getRow(rowIndex);// 当前行
                    int firstColumnIndex = currentRow.getFirstCellNum(); // 首列
                    int lastColumnIndex = currentRow.getLastCellNum();// 最后一列
                    for (int columnIndex = firstColumnIndex; columnIndex <= lastColumnIndex; columnIndex++) {
                        Cell currentCell = currentRow.getCell(columnIndex);// 当前单元格
                        String currentCellValue = this.getCellValue(currentCell, true);// 当前单元格的值
                        //System.out.println(columnIndex+": "+currentCellValue + "\t");
                        strArr[columnIndex]=currentCellValue;
                    }
                    arrs.add(strArr);
                    //System.out.println("");
                }
                //System.out.println("======================================================");
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (workbook != null) {
                try {
                    workbook.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
    }

    /**
     * 取单元格的值
     * @param cell 单元格对象
     * @param treatAsStr 为true时，当做文本来取值 (取到的是文本，不会把“1”取成“1.0”)
     * @return
     */
    private String getCellValue(Cell cell, boolean treatAsStr) {
        if (cell == null) {
            return "";
        }

        if (treatAsStr) {
            // 虽然excel中设置的都是文本，但是数字文本还被读错，如“1”取成“1.0”
            // 加上下面这句，临时把它当做文本来读取
            cell.setCellType(Cell.CELL_TYPE_STRING);
        }

        if (cell.getCellType() == Cell.CELL_TYPE_BOOLEAN) {
            return String.valueOf(cell.getBooleanCellValue());
        } else if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC) {
            return String.valueOf(cell.getNumericCellValue());
        } else {
            return String.valueOf(cell.getStringCellValue());
        }
    }

    private static String getCode() {
    	Random rd = new Random();
    	return new StringBuilder().append(rd.nextInt(10))
    			.append(rd.nextInt(10)).append(rd.nextInt(10))
    			.append(rd.nextInt(10)).append(rd.nextInt(10))
    			.append(rd.nextInt(10)).toString();
    }
    
   
    public static void main(String[] args) throws Exception {
    	ReadExcelTest ret = new ReadExcelTest();
    	List<String[]> lsArr=new ArrayList<String[]>();
    	ret.readExcel("D:\\gpsared.xls",lsArr);
    	for(String [] a: lsArr){
    		//System.out.println(a[0]+"  "+a[1].split("#")[0]);
    		String ap [] =a[1].split("#")[0].split(",");
    		System.out.print("new BMap.Point("+ap[1]+","+ap[0]+"),");
    		//System.out.print("\""+a[0]+"\",");
    	}
    	System.out.println();
    	for(String [] a: lsArr){
    		//System.out.println(a[0]+"  "+a[1].split("#")[0]);
    		//String ap [] =a[1].split("#")[0].split(",");
    		//System.out.print("new BMap.Point("+ap[1]+","+ap[0]+"),");
    		System.out.print("\""+a[0].substring(0, 6)+"\",");
    	}
    	    	
    	
    	
    }

}