<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>