import java distinguish .xls excel file with .xlsx

public static void main(String[] args) throws Exception {
     String namePath="D://file//测试.xls";
   //String namePath="D://file//测试.xlsx";
     List<Map<String,String>> lists=loadExcel(namePath);
	 for(int i=0;i<lists.size();i++){
	    Map<String,String> map=lists.get(i);
		
	 }
		
 }

public static List<Map<String,String>> loadExcel(String filepath) throws Exception{
    	List<Map<String,String>> datas = new ArrayList<Map<String,String>>();
    	//导入.xls与.xlsx判断
    if(filepath.indexOf(".xlsx")>-1){//=======导入.xlsx文件
    	XSSFWorkbook xssfWorkbook = new XSSFWorkbook(new FileInputStream(filepath));
    	XSSFSheet sheet0= xssfWorkbook.getSheetAt(0);
    	int rows0=sheet0.getPhysicalNumberOfRows();
    	for(int i = 1; i < rows0; i++){
    		XSSFRow xssfRow = sheet0.getRow(i);
    		// 行不为空
			if (xssfRow != null ) {
				// 获取到Excel文件中的所有的列
				int cells0 = xssfRow.getPhysicalNumberOfCells();
				String value = "";
				// 遍历列
				for (int j = 0; j < cells0; j++) {
					// 获取到列的值
					XSSFCell  cell = xssfRow.getCell(j);
					if (cell != null) {
						switch (cell.getCellType()) {
						case XSSFCell.CELL_TYPE_FORMULA:
							break;
						case XSSFCell.CELL_TYPE_NUMERIC:
							value += cell.getNumericCellValue() + ",";
							break;
						case XSSFCell.CELL_TYPE_STRING:
							value += cell.getStringCellValue() + ",";
							break;
						default:
							value += "0";
							break;
						}
					}
				}
				// 将数据插入到mysql数据库中
				String[] val = value.split(",");
				if(!"".equals(val[0])&&val[0]!=null ){
					Map map=new HashMap<String,String>();
					for(int k=0;k<val.length;k++){
						map.put(""+k, val[k]);
					}
					datas.add(map);
				}
			 }
    	  }
    }else if(filepath.indexOf(".xls")>-1){ //=======导入.xls文件
    	// 创建对Excel工作簿文件的引用
		HSSFWorkbook wookbook = new HSSFWorkbook(new FileInputStream(filepath));
		// 在Excel文档中，第一张工作表的缺省索引是0
		// 其语句为：HSSFSheet sheet = workbook.getSheetAt(0);
		 HSSFSheet sheet = wookbook.getSheetAt(0);
		//HSSFSheet sheet = wookbook.getSheet("Sheet1");
		// 获取到Excel文件中的所有行数
		int rows = sheet.getPhysicalNumberOfRows();
		for (int i = 1; i < rows; i++) {
			// 读取左上端单元格
			HSSFRow row = sheet.getRow(i);
			// 行不为空
			if (row != null ) {
				// 获取到Excel文件中的所有的列
				int cells = row.getPhysicalNumberOfCells();
				String value = "";
				// 遍历列
				for (int j = 0; j < cells; j++) {
					// 获取到列的值
					HSSFCell cell = row.getCell(j);
					if (cell != null) {
						switch (cell.getCellType()) {
						case HSSFCell.CELL_TYPE_FORMULA:
							break;
						case HSSFCell.CELL_TYPE_NUMERIC:
							value += cell.getNumericCellValue() + ",";
							break;
						case HSSFCell.CELL_TYPE_STRING:
							value += cell.getStringCellValue() + ",";
							break;
						default:
							value += "0";
							break;
						}
					}
				}
				// 将数据插入到mysql数据库中
				String[] val = value.split(",");
				if(!"".equals(val[0])&&val[0]!=null ){
					Map map=new HashMap<String,String>();
					for(int k=0;k<val.length;k++){
						map.put(""+k, val[k]);
					}
					datas.add(map);
				}
			}
		  }
    	}
    	return datas;
    }