java读取excel

JDK1.5 JXL1.4 JXL如果版本与JDK不兼容造成读写失败
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public class ExcelReader implements Serializable  {

	/**
	 * 
	 */
	private static final long serialVersionUID = -6695377007617333835L;

	public ExcelReader(String path){
		excelPath = path;
		init();
	}

	private static Logger logger = LoggerManager.getLogger(ExcelReader.class);

	//Excel文件路径
	private String excelPath = "";	
	//Excel文件对象
	private Workbook workBook = null;
	//Excel文件Sheet所有对象
	private HashMap<String, Sheet> sheetsMap = new HashMap<String, Sheet>();
	private Sheet[] sheets = null;
	//当前sheet对象
	private Sheet currentSheet = null;
	//Excel中Sheet行所含所有列对象
	//private Cell[] cells = null;
	//当前sheet表中当前行标
	private int index = 0;
	//当前sheet表中行数
	private int rows = 0;

	public int getIndex() {
		return index;
	}

	public void setIndex(int index) {
		this.index = index;
	}	

	public void setExcelPath(String excelPath) {
		this.excelPath = excelPath;
		init();
	}

	/**
	 * 初始化Excel文件对象
	 */
	private void init(){
		try {			
			workBook = Workbook.getWorkbook(new File(excelPath));
			sheets = workBook.getSheets();
			//设置默认的当前活动表为XLS文件第一个表
			currentSheet = sheets[0];
			index = 0;
			rows = currentSheet.getRows();
			for(Sheet sheet : sheets){
				sheetsMap.put(sheet.getName(), sheet);
			}
		} catch (Exception e) {			
			logger.error("初始化Excel文件对象失败!");
		} 
	}

	/**
	 * 根据表名设置活动sheet
	 * @param sheetName	sheet表名
	 */
	public void setCurrentSheet(String sheetName){
		if(sheetsMap.containsKey(sheetName)){
			currentSheet = sheetsMap.get(sheetName);
			index = 0;
			rows = currentSheet.getRows();
		}
	}

	/**
	 * 根据给出表号设置当前活动sheet表
	 * @param _index	表号
	 */
	public void setCurrentSheet(int _index){
		if(_index>sheets.length || _index < 0){
			logger.info("请设置合理的Sheet表号:0~" + sheets.length);
			return;
		}
		currentSheet = sheets[_index];
		//重置行号
		index = 0;
		rows = currentSheet.getRows();
	}

	/**
	 * 取得当前活动sheet表
	 * @return
	 */
	public Sheet getCurrentSheet(){
		return currentSheet;
	}

	/**
	 * 通过sheet表名取得sheet表
	 * @param sheetName
	 * @return
	 */
	public Sheet getSheet(String sheetName){
		if(sheetsMap.containsKey(sheetName)){
			return sheetsMap.get(sheetName);
		}
		return null;
	}

	/**
	 * 根据给出的表标号取得sheet表
	 * @param _index		
	 * @return
	 */
	public Sheet getSheet(int _index){
		if(_index>sheets.length || _index < 0){
			logger.info("请设置合理的Sheet表号:0~" + sheets.length);
			return null;
		}
		return sheets[_index];
	}

	/**
	 * 重置当前sheet行标
	 */
	public void reset(){
		index = 0;
	}

	/**
	 * 判断当前sheet表是否还有其他行
	 * @return true/false
	 */
	public boolean hasMore(){
		return (index <rows)? true : false;
	}

	/**
	 * 取得下一行所有列
	 * @return Cell[]
	 */
	public Cell[] next(){
		return currentSheet.getRow(index++);
	}

	/**
	 * 取得sheet表中对应行、列的内容
	 * @param sheetName	sheet表名
	 * @param row		行标
	 * @param cols		列标
	 * @return
	 */
	public String getContents(String sheetName,int row, int cols){
		if(workBook == null){
			logger.info("Excel文件对象未初始化!");
			return "";
		}
		if(sheetsMap.containsKey(sheetName)){
			return sheetsMap.get(sheetName).getCell(row, cols).getContents();
		}		
		return "";
	}

	/**
	 * 取得sheet表中对应行、列的内容
	 * @param _index		表号
	 * @param row		行标
	 * @param cols		列标
	 * @return
	 */
	public String getContents(int _index,int row, int cols){
		if(workBook == null){
			logger.info("Excel文件对象未初始化!");
			return "";
		}
		if(_index>sheets.length || _index < 0){
			logger.info("请设置合理的Sheet表号:0~" + sheets.length);
			return null;
		}		
		return sheets[index].getCell(row, cols).getContents();				
	}	

	/**
	 * Excel文件对象释放
	 */
	public void release(){
		if( workBook != null){
			workBook.close();
		}
	}
}