// 选择模板文件
Workbook wb = Workbook
.getWorkbook(new File(文件路径名"));
// 通过模板得到一个可写的Workbook
wrwBook = Workbook.createWorkbook(os, wb);
wrs = wrwBook.getSheet(0);
应用公式类似这样，给D9设置公式D3至D8的和
wrs.addCell(new Formula(3, 8, "SUM(D3:D8)", 单元格样式));
Workbook wb = Workbook
.getWorkbook(new File(文件路径名"));
// 通过模板得到一个可写的Workbook
wrwBook = Workbook.createWorkbook(os, wb);
wrs = wrwBook.getSheet(0);
应用公式类似这样，给D9设置公式D3至D8的和
wrs.addCell(new Formula(3, 8, "SUM(D3:D8)", 单元格样式));
jxl自带的包里有个公式的demo的,你试试看
--------------------------------------
/*********************************************************************
*
* Copyright (C) 2002 Andrew Khan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***************************************************************************/
package jxl.demo;
import java.io.File;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.Iterator;
import jxl.Workbook;
import jxl.Sheet;
import jxl.Cell;
import jxl.CellType;
import jxl.FormulaCell;
import jxl.biff.CellReferenceHelper;
import jxl.biff.formula.FormulaParser;
import jxl.biff.formula.ExternalSheet;
import jxl.biff.formula.FormulaException;
/**
* Goes through each cell in the workbook, and if the contents of that
* cell is a formula, it prints out the last calculated value and
* the formula string
*/
public class Formulas
{
/**
* Constructor
*
* @param w The workbook to interrogate
* @param out The output stream to which the CSV values are written
* @param encoding The encoding used by the output stream. Null or
* unrecognized values cause the encoding to default to UTF8
* @exception java.io.IOException
*/
public Formulas(Workbook w, OutputStream out, String encoding)
throws IOException
{
if (encoding == null || !encoding.equals("UnicodeBig"))
{
encoding = "UTF8";
}
try
{
OutputStreamWriter osw = new OutputStreamWriter(out, encoding);
BufferedWriter bw = new BufferedWriter(osw);
ArrayList parseErrors = new ArrayList();
for (int sheet = 0; sheet < w.getNumberOfSheets(); sheet++)
{
Sheet s = w.getSheet(sheet);
bw.write(s.getName());
bw.newLine();
Cell[] row = null;
Cell c = null;
for (int i = 0 ; i < s.getRows() ; i++)
{
row = s.getRow(i);
for (int j = 0; j < row.length; j++)
{
c = row[j];
if (c.getType() == CellType.NUMBER_FORMULA ||
c.getType() == CellType.STRING_FORMULA ||
c.getType() == CellType.BOOLEAN_FORMULA ||
c.getType() == CellType.DATE_FORMULA ||
c.getType() == CellType.FORMULA_ERROR)
{
FormulaCell nfc = (FormulaCell) c;
StringBuffer sb = new StringBuffer();
CellReferenceHelper.getCellReference
(c.getColumn(), c.getRow(), sb);
try
{
bw.write("Formula in " + sb.toString() +
" value: " + c.getContents());
bw.flush();
bw.write(" formula: " + nfc.getFormula());
bw.flush();
bw.newLine();
}
catch (FormulaException e)
{
bw.newLine();
parseErrors.add(sb.toString() + ": " + e.getMessage());
}
}
}
}
}
bw.flush();
bw.close();
if (parseErrors.size() > 0)
{
System.err.println();
System.err.println("There were " + parseErrors.size() + " errors");
Iterator i = parseErrors.iterator();
while (i.hasNext())
{
System.err.println(i.next());
}
}
}
catch (UnsupportedEncodingException e)
{
System.err.println(e.toString());
}
}
}