学步园

方法一，利用第三方jar包:jxl.jar

public void createExcel(){
		try{
			//打开文件
			WritableWorkbook workbook = Workbook.createWorkbook(new File("test.xls"));
			//生成名为“第一页”的工作表，参数0表示这是第一页 
			WritableSheet sheet = workbook.createSheet("第一页", 0);
			//在Label对象的构造子中指名单元格位置是第一列第一行(0,0) 
			//以及单元格内容为test 
			Label label = new Label(0,0,"test");
			//将定义好的单元格添加到工作表中 
			sheet.addCell(label);
			/*生成一个保存数字的单元格 　　
			 * 必须使用Number的完整包路径，否则有语法歧义 　　
			 * 单元格位置是第二列，第一行，值为789.123*/ 
			jxl.write.Number number = new jxl.write.Number(1,0,756);
			
			sheet.addCell(number);
			
			sheet.insertColumn(1);
			
			workbook.copySheet(0, "第二页", 1);
			
			WritableSheet sheet2 = workbook.getSheet(1);
			Range range = sheet2.mergeCells(0, 0, 0, 8);
			sheet2.unmergeCells(range);
			
			sheet2.addImage(new WritableImage(5, 5, 10, 20, new File("F:\\09.png")));
			
			
			CellView cv = new CellView();
			
			WritableCellFormat cf = new WritableCellFormat();
			cf.setBackground(Colour.BLUE);
			
			cv.setFormat(cf);
			cv.setSize(6000);
			cv.setDimension(10);
			
			sheet2.setColumnView(2, cv);
			
			workbook.write();
			workbook.close();
			
		}catch(Exception e){}
	}

同时，读取Excel中的内容为：

public void displayExcel(){
		try {
			Workbook wb = Workbook.getWorkbook(new File("test.xls"));
			
			Sheet s = wb.getSheet(0);
			System.out.println(s.getCell(0, 0).getContents());
		} catch (BiffException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}

方法二，利用jar包：poi-3.2-FINAL-20081019.jar

public void exportExcel(){
		
		HSSFWorkbook wb = new HSSFWorkbook();//创建工作薄
		
		HSSFFont font = wb.createFont();
		font.setFontHeightInPoints((short)24);
		font.setFontName("宋体");
		font.setColor(HSSFColor.BLACK.index);
		font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
		
		HSSFCellStyle style = wb.createCellStyle();
		style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
		style.setFillForegroundColor(HSSFColor.LIGHT_TURQUOISE.index);
		style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
		style.setBorderBottom(HSSFCellStyle.BORDER_THICK);
		style.setFont(font);
		
		HSSFSheet sheet = wb.createSheet("test");//创建工作表，名称为test
		
		int iRow = 0;//行号
		int iMaxCol = 17;//最大列数
		HSSFRow row = sheet.createRow(iRow);
		HSSFCell cell = row.createCell((short)0);
		cell.setCellValue(new HSSFRichTextString("测试excel"));
		cell.setCellStyle(style);
		sheet.addMergedRegion(new Region(iRow,(short)0,iRow,(short)(iMaxCol-1)));
		
		ByteArrayOutputStream os = new ByteArrayOutputStream();
		
		try{
			wb.write(os);
		}catch(IOException e){
			e.printStackTrace();
			//return null;
		}
		
		byte[] xls = os.toByteArray();
		
		File file = new File("test01.xls");
		OutputStream out = null;
		try {
			 out = new FileOutputStream(file);
			 try {
				out.write(xls);
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		} catch (FileNotFoundException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		}
		
		
	}

 这里补上相关的jar包：jxl.jar, poi.jar   的下载地址：

http://download.csdn.net/download/kuangfengbuyi/4658127