<span style="font-size: medium;">import jxl.*; import jxl.format.Underlinestyle; import jxl.write.*; import jxl.write.Number; import jxl.write.Boolean; import java.io.*; public class ExcelHandle {    public ExcelHandle()    {    }    /**     * 读取Excel     *     * @param filePath     */    public static void readExcel(String filePath)    {        try        {            InputStream is = new FileInputStream(filePath);            Workbook rwb = Workbook.getWorkbook(is);            //Sheet st = rwb.getSheet("0")这里有两种方法获取sheet表,1为名字，2为下标，从0开始            Sheet st = rwb.getSheet("original");            Cell c00 = st.getCell(0,0);            //通用的获取cell值的方式,返回字符串            String strc00 = c00.getContents();            //获得cell具体类型值的方式            if(c00.getType() == CellType.LABEL)            {                LabelCell labelc00 = (LabelCell)c00;                strc00 = labelc00.getString();            }            //输出            System.out.println(strc00);            //关闭            rwb.close();        }        catch(Exception e)        {            e.printStackTrace();        }    }    /**     * 输出Excel     *     * @param os     */    public static void writeExcel(OutputStream os)    {        try        {            /**             * 只能通过API提供的工厂方法来创建Workbook，而不能使用WritableWorkbook的构造函数，             * 因为类WritableWorkbook的构造函数为protected类型             * method(1)直接从目标文件中读取WritableWorkbook wwb = Workbook.createWorkbook(new File(targetfile));             * method(2)如下实例所示 将WritableWorkbook直接写入到输出流             */            WritableWorkbook wwb = Workbook.createWorkbook(os);            //创建Excel工作表 指定名称和位置            WritableSheet ws = wwb.createSheet("Test Sheet 1",0);            //**************往工作表中添加数据*****************            //1.添加Label对象            Label label = new Label(0,0,"this is a label test");            ws.addCell(label);            //添加带有字型formatting对象            WritableFont wf = new WritableFont(WritableFont.TIMES,18,WritableFont.BOLD,true);            WritableCellformat wcf = new WritableCellformat(wf);            Label labelcf = new Label(1,0,"this is a label test",wcf);            ws.addCell(labelcf);            //添加带有字体颜色的formatting对象            WritableFont wfc = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false,                    Underlinestyle.NO_UNDERLINE,jxl.format.Colour.RED);            WritableCellformat wcfFC = new WritableCellformat(wfc);            Label labelCF = new Label(1,0,"This is a Label Cell",wcfFC);            ws.addCell(labelCF);            //2.添加Number对象            Number labelN = new Number(0,1,3.1415926);            ws.addCell(labelN);            //添加带有formatting的Number对象            Numberformat nf = new Numberformat("#.##");            WritableCellformat wcfN = new WritableCellformat(nf);            Number labelNF = new jxl.write.Number(1,1,3.1415926,wcfN);            ws.addCell(labelNF);            //3.添加Boolean对象            Boolean labelB = new jxl.write.Boolean(0,2,false);            ws.addCell(labelB);            //4.添加DateTime对象            jxl.write.DateTime labelDT = new jxl.write.DateTime(0,3,new java.util.Date());            ws.addCell(labelDT);            //添加带有formatting的Dateformat对象            Dateformat df = new Dateformat("dd MM yyyy hh:mm:ss");            WritableCellformat wcfDF = new WritableCellformat(df);            DateTime labelDTF = new DateTime(1,3,new java.util.Date(),wcfDF);            ws.addCell(labelDTF);            //添加图片对象,jxl只支持png格式图片            File image = new File("f:\\2.png");            WritableImage wimage = new WritableImage(0,1,2,2,image);            ws.addImage(wimage);            //写入工作表            wwb.write();            wwb.close();        }        catch(Exception e)        {            e.printStackTrace();        }    }    /**     * 拷贝后,进行修改,其中file1为被copy对象，file2为修改后创建的对象；如果不想改名字的话他们可以一样    * 尽单元格原有的格式化修饰是不能去掉的，我们还是可以将新的单元格修饰加上去，     * 以使单元格的内容以不同的形式表现     * @param file1     * @param file2     */    public static void modifyExcel(File file1,File file2)    {        try        {            Workbook rwb = Workbook.getWorkbook(file1); //打开一个文件的副本，并且指定数据写回到原文件                WritableWorkbook wwb = Workbook.createWorkbook(file2,rwb);//copy            WritableSheet ws = wwb.getSheet(0);            WritableCell wc = ws.getWritableCell(0,0);            //判断单元格的类型,做出相应的转换            if(wc.getType == CellType.LABEL)            {                Label label = (Label)wc;                label.setString("The value has been modified");            }            wwb.write();            wwb.close();            rwb.close();        }        catch(Exception e)        {            e.printStackTrace();        }    }    //测试    public static void main(String[] args)    {        try        {            //读Excel            ExcelHandle.readExcel("f:/testRead.xls");            //输出Excel            File fileWrite = new File("f:/testWrite.xls");            fileWrite.createNewFile();            OutputStream os = new FileOutputStream(fileWrite);            ExcelHandle.writeExcel(os);            //修改Excel            ExcelHandle.modifyExcel(new file(""),new File(""));        }        catch(Exception e)        {           e.printStackTrace();        }    } } 2.在jsp中做相关测试，创建一个writeExcel.jsp <% response.reset();//清除Buffer response.setContentType("application/vnd.ms-excel"); File fileWrite = new File("f:/testWrite.xls"); fileWrite.createNewFile(); new FileOutputStream(fileWrite); ExcelHandle.writeExcel(new FileOutputStream(fileWrite)); %> 在IE中浏览writeExcel.jsp就可以动态生成Excel文档了，其中response.setContentType("application/vnd.ms-excel");语句必须要，才能确保不乱码，在jsp中输入<%@page contentType="application/vnd.ms-excel;charset=GBK"%>不行。</span>

<span style="font-size: medium;">public static void modifyExcel(File file1,File file2)           {            WritableWorkbook workbook=null;        WritableSheet sheet=null;        Workbook rwb;        try {            rwb = Workbook.getWorkbook(file1);            workbook = Workbook.createWorkbook(file2,rwb);            sheet=workbook.getSheet(0);            Label label=new Label(2,2,"zzzz");            sheet.addCell(label);            workbook.write();            workbook.close();        } catch (BiffException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        } catch (RowsExceededException e) {            e.printStackTrace();        } catch (WriteException e) {            e.printStackTrace();        }               }    </span>