施用POI对Office Excel 97-2003 版本以及2007版进行基本的读取操作

使用POI对Office Excel 97-2003 版本以及2007版进行基本的读取操作

使用POI对excel不同的版本进行读操作,参见以下代码:

 

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

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.ss.util.NumberToTextConverter;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;

/**
 * 读取Excel普通数据格式
 * @author Jack
 * 自动识别Office版本
 * =>支持Office 97-2003版本
 * =>支持Office 2007以上版本
 */
public class ExcelFactory {
	
	private final static MyLog _log = MyLog.getLog(ExcelFactory.class);
	
	private String _filepath;			// 文件路径(仅限-xls|-xlsx格式)
	private Workbook _workbook;			// Excel工作薄(HSSF*|XSSF*父类)
	private Sheet _sheet;				// Excel工作表
	private Row _row;					// Excel行
	private Cell _cell;					// Excel单元格
	private int _rows;					// Excel已使用的总行数(索引+1)
	private int _columns;				// Excel列数->从配置文件统计出来
	private int _begin;					// Excel开始行->从配置文件中获取
	private boolean isXLS;				// 判断是否是{-xls}
	private final static String XLSX = ".xlsx";
	
	public ExcelFactory(String filepath, int columns, int begin) throws FileNotFoundException, IOException {
		_filepath = filepath;
		_columns = columns;
		_begin = begin;
		isXLS();
		get();
	}
	
	private void isXLS() {
		if (-1 < _filepath.indexOf(XLSX)) {
			isXLS = true;
			return ;
		}
		isXLS = false;
	}
	
	private Workbook get() throws FileNotFoundException, IOException {
		if (null == _workbook){
			_workbook = isXLS?new XSSFWorkbook(_filepath):new HSSFWorkbook(new FileInputStream(_filepath));
		}
		return _workbook;
	}
	
	public void Read(int index) {
		_sheet = _workbook.getSheetAt(index);
		_rows = _sheet.getLastRowNum();
		for (int y = _begin; y <= _rows; y ++) {
			_row = _sheet.getRow(y);
			if (null == _row){
				continue;
			}
			
			for (int x = 0; x < _columns; x ++){
				_cell = _row.getCell(x);
				if (null == _cell){
					continue;
				}
				String cellValue = getValue(_cell);
				System.out.print((null == cellValue || 0 == cellValue.length())?"#":cellValue);
				System.out.print(" ");
			}
			System.out.println();
		}
	}
	
	public String getValue(Cell cell){
		switch (cell.getCellType()){
			case Cell.CELL_TYPE_BLANK:
				return "";
			case Cell.CELL_TYPE_BOOLEAN:
				return String.valueOf(cell.getBooleanCellValue());
			case Cell.CELL_TYPE_ERROR:
				break;
			case Cell.CELL_TYPE_FORMULA:
				return cell.getCellFormula();
			case Cell.CELL_TYPE_NUMERIC:
				return NumberToTextConverter.toText(cell.getNumericCellValue());
			case Cell.CELL_TYPE_STRING:
				return cell.getStringCellValue();
			default :
				return cell.getStringCellValue();
		}
		return cell.getStringCellValue();
	}
	
	public static void main(String[] args) throws Exception {
//		String filepath = "D:/excel/原始订单－liandong110221.xls";
//		ExcelFactory factory = new ExcelFactory(filepath, 17, 1);
//		factory.Read(0);
		
		String filepath = "D:/excel/test.xlsx";
		ExcelFactory factory = new ExcelFactory(filepath, 13, 0);
		factory.Read(0);
	}
}