java Jxl 操作Excel

1.首先，创建一个可读写的工作簿（WritableWorkbook）：

WritableWorkbook workbook = Workbook.createWorkbook(new File("d:\\test.xls"));

2.如果是想要修改一个已存在的excel工作簿，则需要先获得它的原始工作簿，再创建一个可读写的副本：

Workbook wb = Workbook.getWorkbook(new File("src\\test\\test.xls")); // 获得原始文档
WritableWorkbook workbook = Workbook.createWorkbook(new File("d:\\test_modified.xls"),wb); // 创建一个可读写的副本

3.取得要操作的sheet，并对其进行相应的操作，如改名、合并单元格、设置列宽、行高等:

sheet.mergeCells(0, 0, 4, 0); // 合并单元格
sheet.setRowView(0, 600); // 设置行的高度
sheet.setColumnView(0, 30); // 设置列的宽度
sheet.setColumnView(1, 20); // 设置列的宽度

4.通过WritableFont、WritableCellFormat等对象可以设置单元格的字体、样式等外观：

WritableSheet sheet = workbook.getSheet(0);   WritableFont titleWf = new WritableFont(WritableFont.createFont("仿宋_GB2312"),// 字体   20,//WritableFont.DEFAULT_POINT_SIZE,   // 字号   WritableFont.NO_BOLD,                  // 粗体   false,                                 // 斜体   UnderlineStyle.NO_UNDERLINE,            // 下划线   Colour.BLUE2,                       // 字体颜色   ScriptStyle.NORMAL_SCRIPT);
WritableCellFormat wcf = new WritableCellFormat(titleWf);
wcf.setBackground(Colour.GRAY_25);// 设置单元格的背景颜色
wcf.setAlignment(Alignment.CENTRE); // 设置对齐方式
wcf.setBorder(Border.ALL, BorderLineStyle.THICK); // 添加边框
cell.setCellFormat(wcf);  sheet.setName("修改后"); // 给sheet页改名
workbook.removeSheet(2); // 移除多余的标签页
workbook.removeSheet(3);

demo1:

public String createExcel(String path,String filename,List list,TblKepuoaRecordDispatch dispatch) throws Exception{File file = new File(path+File.separator+filename+".xls" );WritableWorkbook wbook = null;try {wbook = Workbook.createWorkbook(file);// 建立excel文件String tmptitle = filename; // 标题WritableSheet wsheet = wbook.createSheet(filename, 0); // sheet名称// 设置excel标题WritableFont wfont = new WritableFont(WritableFont.createFont("宋体"), 16, WritableFont.BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);WritableCellFormat wcfFC = new WritableCellFormat(wfont);wcfFC.setAlignment(Alignment.CENTRE); // 设置对齐方式 wsheet.mergeCells(0, 0, 9, 0); // 合并单元格  wsheet.addCell(new Label(0, 0, tmptitle, wcfFC));wfont = new jxl.write.WritableFont(WritableFont.createFont("宋体"), 13,WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);wcfFC = new WritableCellFormat(wfont);wcfFC.setBorder(Border.NONE,BorderLineStyle.NONE); wcfFC.setAlignment(Alignment.CENTRE); // 设置对齐方式 wsheet.setColumnView(0, 6); // 设置列的宽度wsheet.setColumnView(1, 20); // 设置列的宽度wsheet.setColumnView(2, 25); // 设置列的宽度wsheet.setColumnView(3, 60); // 设置列的宽度wsheet.setColumnView(4, 10); // 设置列的宽度wsheet.setColumnView(5, 6); // 设置列的宽度wsheet.setColumnView(6, 6); // 设置列的宽度wsheet.setColumnView(7, 80); // 设置列的宽度wsheet.setColumnView(8, 20); // 设置列的宽度wsheet.setColumnView(9, 20); // 设置列的宽度// 开始生成主体内容                wsheet.addCell(new Label(0, 1, "序号",wcfFC));wsheet.addCell(new Label(1, 1, "日期",wcfFC));wsheet.addCell(new Label(2, 1, "发文编号",wcfFC));wsheet.addCell(new Label(3, 1, "收文单位",wcfFC));wsheet.addCell(new Label(4, 1, "文件类型",wcfFC));wsheet.addCell(new Label(5, 1, "件数",wcfFC));wsheet.addCell(new Label(6, 1, "附件",wcfFC));wsheet.addCell(new Label(7, 1, "文件标题",wcfFC));wsheet.addCell(new Label(8, 1, "存档编号",wcfFC));wsheet.addCell(new Label(9, 1, "签字",wcfFC));wfont = new jxl.write.WritableFont(WritableFont.createFont("宋体"), 13,WritableFont.NO_BOLD, false, UnderlineStyle.NO_UNDERLINE,Colour.BLACK);wcfFC = new WritableCellFormat(wfont);wcfFC.setBorder(Border.NONE,BorderLineStyle.NONE); int j = 2;for (int i = 0; i < list.size(); i++) {dispatch=(TblKepuoaRecordDispatch) list.get(i);String uptime="";if(dispatch.getDispatchDate()!=null&&!"".equals(dispatch.getDispatchDate())){uptime=sdf2.format(dispatch.getDispatchDate());//时间格式化}wsheet.addCell(new Label(0, j, i+1+"",wcfFC));wsheet.addCell(new Label(1, j,uptime,wcfFC));wsheet.addCell(new Label(2, j,dispatch.getDispatchNo(),wcfFC));wsheet.addCell(new Label(3, j,dispatch.getDispatchOrgan(),wcfFC));/*if(dispatch!=null && dispatch.getDispatchOpreator()!=null && !"".equals(dispatch.getDispatchOpreator())){if(dispatch.getCode()!=null && !"".equals(dispatch.getCode())){wsheet.addCell(new Label(4, j,dispatch.getDispatchOpreator()+"-"+dispatch.getCode(),wcfFC));}else{wsheet.addCell(new Label(4, j,dispatch.getDispatchOpreator(),wcfFC));}}*/wsheet.addCell(new Label(4, j, dispatch.getDispatchType(),wcfFC));wsheet.addCell(new Label(5, j,String.valueOf(dispatch.getDispatchCount()),wcfFC));wsheet.addCell(new Label(6, j,String.valueOf(dispatch.getDispatchAccessoriescCount()),wcfFC));wsheet.addCell(new Label(7, j,dispatch.getDispatchName(),wcfFC));wsheet.addCell(new Label(8, j, dispatch.getArchiveNo(),wcfFC));j++;}} catch (IOException e) {// TODO Auto-generated catch blockLoggers.info("DispatchAction 中 createExcel 方法："+e.getMessage());e.printStackTrace();}finally{if(wbook != null){wbook.write(); // 写入文件wbook.close();}}// 主体内容生成结束        return filename+".xls";}

下面是参考jxl api里那个例子写的，把我自己觉得常用的excel操作基本都包含了：

package test;   import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;   import jxl.CellType;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.Colour;
import jxl.format.ScriptStyle;
import jxl.format.UnderlineStyle;
import jxl.format.VerticalAlignment;
import jxl.read.biff.BiffException;
import jxl.write.Blank;
import jxl.write.DateFormat;
import jxl.write.DateFormats;
import jxl.write.DateTime;
import jxl.write.Formula;
import jxl.write.Label;
import jxl.write.Number;
import jxl.write.NumberFormat;
import jxl.write.WritableCell;
import jxl.write.WritableCellFeatures;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableHyperlink;
import jxl.write.WritableImage;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;   /**  *   * @author why  *  */
public class ExcelTest {   /**  * @param args  * @throws IOException   * @throws BiffException   * @throws WriteException   */  public static void main(String[] args) throws IOException, BiffException, WriteException {   Workbook wb = Workbook.getWorkbook(new File("src\\test\\test.xls")); // 获得原始文档   WritableWorkbook workbook = Workbook.createWorkbook(new File("d:\\test_modified.xls"),wb); // 创建一个可读写的副本   /**  * 定义与设置Sheet  */  WritableSheet sheet = workbook.getSheet(0);   sheet.setName("修改后"); // 给sheet页改名   workbook.removeSheet(2); // 移除多余的标签页   workbook.removeSheet(3);   sheet.mergeCells(0, 0, 4, 0); // 合并单元格   sheet.setRowView(0, 600); // 设置行的高度   sheet.setColumnView(0, 30); // 设置列的宽度   sheet.setColumnView(1, 20); // 设置列的宽度   WritableCell cell = null;   WritableCellFormat wcf = null;   Label label = null;   WritableCellFeatures wcfeatures = null;   // 更改标题字体   cell = sheet.getWritableCell(0,0);   WritableFont titleWf = new WritableFont(WritableFont.createFont("仿宋_GB2312"),// 字体   20,//WritableFont.DEFAULT_POINT_SIZE,  // 字号   WritableFont.NO_BOLD,                  // 粗体   false,                                 // 斜体   UnderlineStyle.NO_UNDERLINE,           // 下划线   Colour.BLUE2,                          // 字体颜色   ScriptStyle.NORMAL_SCRIPT);   wcf = new WritableCellFormat(titleWf);   wcf.setBackground(Colour.GRAY_25);// 设置单元格的背景颜色   wcf.setAlignment(Alignment.CENTRE); // 设置对齐方式   wcf.setBorder(Border.ALL, BorderLineStyle.THICK); // 添加边框   cell.setCellFormat(wcf);   // 将B3的字体改为仿宋_GB2312   cell = sheet.getWritableCell(1,2);   WritableFont fs = new WritableFont(WritableFont.createFont("仿宋_GB2312"),   11);   wcf = new WritableCellFormat(fs);   cell.setCellFormat(wcf);   // 将B4的字号改为20   cell = sheet.getWritableCell(1,3);   WritableFont size20 = new WritableFont(WritableFont.createFont("宋体"),    20);   wcf = new WritableCellFormat(size20);   cell.setCellFormat(wcf);   // 将B5的字体改为加粗   cell = sheet.getWritableCell(1,4);   WritableFont bold = new WritableFont(WritableFont.createFont("宋体"),    11,   WritableFont.BOLD);   wcf = new WritableCellFormat(bold);   cell.setCellFormat(wcf);   // 将B6的字体改为倾斜   cell = sheet.getWritableCell(1,5);   WritableFont italic = new WritableFont(WritableFont.createFont("宋体"),    11,   WritableFont.NO_BOLD,   true);   wcf = new WritableCellFormat(italic);   cell.setCellFormat(wcf);   // 将B7字体加下划线   cell = sheet.getWritableCell(1,6);   WritableFont underline = new WritableFont(WritableFont.createFont("宋体"),    11,   WritableFont.NO_BOLD,   false,   UnderlineStyle.SINGLE);   wcf = new WritableCellFormat(underline);   cell.setCellFormat(wcf);   // 将B8的文字改为“待修改文字-已修改”   cell = sheet.getWritableCell(1,7);   if (cell.getType() == CellType.LABEL)   {   Label lc = (Label) cell;   lc.setString(lc.getString() + " - 已修改");   }   // 将B9文字对齐方式改为垂直居中、右对齐   cell = sheet.getWritableCell(1,8);   WritableFont align = new WritableFont(WritableFont.createFont("宋体"),    11);   wcf = new WritableCellFormat(align);   wcf.setAlignment(Alignment.RIGHT); // 设置为右对齐   wcf.setVerticalAlignment(VerticalAlignment.CENTRE); // 设置为垂直居中   cell.setCellFormat(wcf);   // 将E3文字改为自动换行   cell = sheet.getWritableCell(4,2);   WritableFont justify = new WritableFont(WritableFont.createFont("宋体"),    11);   wcf = new WritableCellFormat(justify);   wcf.setAlignment(Alignment.JUSTIFY);   cell.setCellFormat(wcf);   // 将B12的数字有效位数从5位改为7位   cell = sheet.getWritableCell(1,11);   NumberFormat sevendps = new NumberFormat("#.0000000");   wcf = new WritableCellFormat(sevendps);   cell.setCellFormat(wcf);   // 将B13改为4位科学计数法表示   cell = sheet.getWritableCell(1,12);   NumberFormat exp4 = new NumberFormat("0.####E0");   wcf = new WritableCellFormat(exp4);   cell.setCellFormat(wcf);   // 将B14改为默认数字表示   cell = sheet.getWritableCell(1,13);   cell.setCellFormat(WritableWorkbook.NORMAL_STYLE);   // 将B15数字类型的值17改为22   cell = sheet.getWritableCell(1,14);   if (cell.getType() == CellType.NUMBER)   {   Number n = (Number) cell;   n.setValue(42);   }   // 将B16的值2.71进行加法运算2.71 + 0.1   cell = sheet.getWritableCell(1,15);   if (cell.getType() == CellType.NUMBER)   {   Number n = (Number) cell;   n.setValue(n.getValue() + 0.1);   }   // 将B19日期格式改为默认   cell = sheet.getWritableCell(1,18);   wcf = new WritableCellFormat(DateFormats.FORMAT9);   cell.setCellFormat(wcf);   // 将B20日期格式改为dd MMM yyyy HH:mm:ss   cell = sheet.getWritableCell(1,19);   DateFormat df = new DateFormat("dd MMM yyyy HH:mm:ss");   wcf = new WritableCellFormat(df);   cell.setCellFormat(wcf);   // 将B21的日期设置为 2011-6-1 11:18:50   cell = sheet.getWritableCell(1,20);   if (cell.getType() == CellType.DATE)   {   DateTime dt = (DateTime) cell;   Calendar cal = Calendar.getInstance();   cal.set(2011, 5, 1, 11, 18, 50);   Date d = cal.getTime();   dt.setDate(d);   }   // 将B24文字添加链接http://www.baidu.com   WritableHyperlink link = new WritableHyperlink(1, 23, new URL("http://www.baidu.com"));   sheet.addHyperlink(link);   // 更改URL链接   WritableHyperlink hyperlinks[] = sheet.getWritableHyperlinks();   for (int i = 0; i < hyperlinks.length; i++) {   WritableHyperlink wh = hyperlinks[i];   if (wh.getColumn() == 1 && wh.getRow() == 24) {   // 将B25文字链接取消   sheet.removeHyperlink(wh,true);//true：保留文字；false：删除文字   }else if(wh.getColumn() == 1 && wh.getRow() == 25){   try {   // 将B26链接更改为http://wuhongyu.javaeye.com   wh.setURL(new URL("http://wuhongyu.javaeye.com"));   } catch (MalformedURLException e) {   e.printStackTrace();   }   }   }   // 利用公式取得B29、B30的值   Formula f1 = new Formula(1, 28, "SUM(C29:D29)");   sheet.addCell(f1);   Formula f2 = new Formula(1, 29, "AVERAGE(C30:G30)");   sheet.addCell(f2);   // 在B32处添加图片，图片大小占10行3列，只支持png格式   File file = new File("d:\\shu05.png");   WritableImage image = new WritableImage(1, 31, 3, 10, file);   sheet.addImage(image);   // 在A44出添加内容"Added drop down validation"，并为其添加注释   label = new Label(0, 43, "Added drop down validation");   wcfeatures = new WritableCellFeatures();   wcfeatures.setComment("右边列是个下拉列表");   label.setCellFeatures(wcfeatures);   sheet.addCell(label);   // 在B44处添加一个下拉列表并添加注释   Blank b = new Blank(1, 43);   wcfeatures = new WritableCellFeatures();   ArrayList al = new ArrayList();   al.add("why");   al.add("landor");   al.add("tjm");   wcfeatures.setDataValidationList(al);   wcfeatures.setComment("这是一个注释");   b.setCellFeatures(wcfeatures);   sheet.addCell(b);   // 为A46添加注释。   // 此处比较麻烦，试了多次发现必须将cell强制类型转换、添加CellFeatures再修改注释才可用，不知有没有更好的办法。   cell = sheet.getWritableCell(0,45);   wcfeatures = new WritableCellFeatures();   wcfeatures.setComment("这个注释不会被显示，删了这行还不行,MD");   cell.setCellFeatures(wcfeatures);   label = (Label) cell;
//       label.setCellFeatures(wcfeatures);// 直接这样写会报一个警告（“注释已存在”），但那个注释仍会被显示。   label.addCellFeatures();   label.getWritableCellFeatures().setComment("终于加上注释了，哈哈哈哈");   //      if (cell instanceof Number) {
//          Number num = (Number) cell;
//          num.setCellFeatures(wcfeatures);
//      } else if (cell instanceof jxl.write.Boolean) {
//          jxl.write.Boolean bool = (jxl.write.Boolean) cell;
//          bool.setCellFeatures(wcfeatures);
//      } else if (cell instanceof jxl.write.DateTime) {
//          jxl.write.DateTime dt = (jxl.write.DateTime) cell;
//          dt.setCellFeatures(wcfeatures);
//      } else {
//          Label _label = (Label) cell;
//          _label.setCellFeatures(wcfeatures);
//      }   workbook.write();   workbook.close();   wb.close();   }   }

Domain parking page Jxl--jar包下载地址

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