/**
?* 提供了常用的Excel讀取和寫入的方法
?* <p>?* Title:?* </p>
?* <p>?* Description:?* </p>
?* <p>?* Copyright: Copyright (c) 2006?* </p>
?* <p>?* Company:?* </p>
?*??* @author?wujiaqian?* @version 1.0
?*/

public class Excel {
?int sheetCount = 1; // excel工作簿，默認為1

?WritableWorkbook wwb = null; // 構建Workbook對象,只讀Workbook對象

?Vector vSheet = null;

?/**
? * 無參構造函數，生成默認名字的excel文件
? */
?public Excel() {
??this("noName.excel");
?}

?/**
? * 帶有一個String類型參數的構造函數
? *
? * @param fileName
? *?String 將要生成的excel文件名
? */
?public Excel(String fileName) {
??try {
???wwb = Workbook.createWorkbook(new File(fileName));
???vSheet = new Vector(5);
??} catch (Exception e) {
??}
?}

?/**
? * 帶有一個File類型參數的構造函數
? *
? * @param fileName
? *??String 將要生成的excel文件名
? */
?public Excel(File file) {
??try {
???wwb = Workbook.createWorkbook(file);
???vSheet = new Vector(5);
??} catch (Exception e) {
??}
?}

?/**
? * 讀取一個EXCEL文件的所有行和列,在同一行上的數據以一個String的形式保存在Vector中,各列數據以","號分割
? *
? * @param fileName
? *?????? ?String 文件名
? * @throws Exception
? * @return Vector
? */
?public static Vector readFromExcel(String fileName) throws Exception {
??Vector v = new Vector();
??File file = new File(fileName);
??if (!file.isFile()) {
???return null;
??}
??v = readExl(file, -1, -1);
??return v;
?}

?public static Vector readFromExcel(File file) throws Exception {
??Vector v = new Vector();
??if (!file.isFile()) {
???return null;
??}
??v = readExl(file, -1, -1);
??return v;
?}

?/**
? * 讀取一行多列或者一列多行
? *
? * @param fileName
? *????????String 文件名
? * @param rowORcol
? *????????int 第幾行或者第幾列
? * @param flag
? *????????String ROW表示前面一個參數的值指的是行數，行COL表示前面一個參數的值指的是列數
? * @throws Exception
? * @return Vector
? */
?public static Vector readFromExcel(String fileName, int rowORcol,
???String flag) throws Exception {
??Vector v = new Vector();
??File file = new File(fileName);
??if (!file.isFile()) {
???return null;
??}
??if (flag != null && flag.equals("ROW")) {
???v = readExl(file, rowORcol, -1);
??} else if (flag != null && flag.equals("COL")) {
???v = readExl(file, -1, rowORcol);
??} else {
???return null;
??}
??return v;
?}

?public static Vector readFromExcel(File file, int rowORcol, String flag)
???throws Exception {
??Vector v = new Vector();
??if (!file.isFile()) {
???return null;
??}
??if (flag != null && flag.equals("ROW")) {
???v = readExl(file, rowORcol, -1);
??} else if (flag != null && flag.equals("COL")) {
???v = readExl(file, -1, rowORcol);
??} else {
???return null;
??}

??return v;
?}

?/**
? * 讀取多行或者多列,可以任意挑選幾行或幾列
? *
? * @param fileName
? *????????String 文件名
? * @param rowORcol
? *????????int 任意的行或列
? * @param flag
? *????????String ROW表示行COL表示列
? * @throws Exception
? * @return Vector
? */
?public static Vector readFromExcel(String fileName, int[] rowORcol,
???String flag) throws Exception {
??Vector v = new Vector();
??return v;
?}

?public static Vector readFromExcel(File file, int[] rowORcol, String flag)
???throws Exception {
??Vector v = new Vector();
??return v;
?}

?/**
? * 讀取第幾行第幾列的一個數據
? *
? * @param fileName
? *??????????? String
? * @param row
? *??????????? int
? * @param col
? *??????????? int
? * @throws Exception
? * @return String
? */
?public static String readFromExcel(String fileName, int row, int col)
???throws Exception {
??String res = null;
??File file = new File(fileName);
??if (!file.isFile()) {
???return null;
??}
??return res;
?}

?public static String readFromExcel(File file, int row, int col)
???throws Exception {
??String res = null;
??if (!file.isFile()) {
???return null;
??}

??return res;
?}

?/**
? * 讀取xls文件
? *
? * @param f
? *????????File 文件
? * @param row
? *????????int 讀取從0到row行
? * @param col
? *????????int 讀取從0到col列
? * @throws Exception
? * @return Vector
? */

?private static Vector readExl(File f, int row, int col) throws Exception {
??Vector v = new Vector();
??Workbook wb = null;
??Sheet st = null;
??wb = Workbook.getWorkbook(f);
??st = wb.getSheet(0);
??int allRow = st.getRows();
??if (row == -1) {
???row = allRow;
??}
??int allCol = st.getColumns();
??if (col == -1) {
???col = allCol;
??}
??for (int i = 0; i < row; i++) {
???String sRow = null;
???for (int j = 0; j < col; j++) {
????Cell c1 = st.getCell(j, i);
????String sCol = c1.getContents();
????if (j == 0) {
?????sRow = sCol;
????} else {
?????if (sCol != null) {
??????sRow = sRow + "," + sCol;
?????} else {
??????sRow = sRow + "," + "";
?????}
????}
????c1 = null;
????sCol = null;
???}
???v.addElement(sRow);
???sRow = null;
??}

??st = null;
??wb.close();
??wb = null;
??return v;
?}

?public void addSheet() throws Exception {
??addSheet(String.valueOf(sheetCount));
?}

?public void addSheet(String sheetName) throws Exception {

??// 創建Excel工作表
??WritableSheet ws = wwb.createSheet(sheetName, sheetCount);
??vSheet.addElement(ws);
??sheetCount++;
?}

?/**
? * 為工作表添加內容,指定添加到第幾列
? *
? * @param v
? *????????Vector 要添加到工作表的內容 格式
? *????????String,String,String,String,...,...,...,..., 每列內容以逗號隔開
? * @param col
? *????????int 指定列數
? * @throws Exception
? */
?public void addContent(Vector v, int col) throws Exception {
??WritableSheet ws = (WritableSheet) vSheet.get(sheetCount - 2);

??int size = v.size();
??try {
???for (int i = 0; i < size; i++) {
????String s = (String) v.get(i);
????String[] s1 = s.split(",");
????for (int j = 0; j < col; j++) {
?????Label label = new Label(j, i, s1[j]);

?????ws.addCell(label);
?????label = null;
????}
???}
??} catch (ArrayIndexOutOfBoundsException e) {
???throw new ArrayIndexOutOfBoundsException("check column!");
??}
??ws = null;
?}

?/**
? * 為工作表添加內容,不指定添加幾列
? *
? * @param v
? *????????Vector 要添加到工作表的內容 格式
? *????????String,String,String,String,...,...,...,..., 每列內容以逗號隔開
? * @throws Exception
? */
?public void addContent(Vector v) throws Exception {
??WritableSheet ws = (WritableSheet) vSheet.get(sheetCount - 2);

??int size = v.size();
??try {
???for (int i = 0; i < size; i++) {
????String s = (String) v.get(i);
????String[] s1 = s.split(",");
????int col_size = s1.length;
????for (int j = 0; j < col_size; j++) {
?????Label label = new Label(j, i, s1[j]);

?????ws.addCell(label);
?????label = null;
????}
???}
??} catch (Exception e) {
???throw new Exception();
??}
??ws = null;
?}

?/**
? * 為工作表添加內容,不指定添加幾列
? *
? * @param rs
? *????????ResultSet 從數據庫中得到的結果集
? * @throws Exception
? */
?public void addContent(ResultSet rs) throws Exception {
??if (rs == null) {
???return;
??}
??WritableSheet ws = (WritableSheet) vSheet.get(sheetCount - 2);
??ResultSetMetaData rsMetaD = rs.getMetaData();
??int col = rsMetaD.getColumnCount();
??int i = 0;
??while (rs.next()) {
???for (int j = 0; j < col; j++) {
????Label label = new Label(j, i, rs.getString(j));// Chinese.fromDatabase(rs.getString(j))
????ws.addCell(label);
????label = null;
???}
???i++;
??}
?}

?/**
? * 最終生成excel文件
? *
? * @throws Exception
? */
?public void createExcel() throws Exception {
??wwb.write();
??wwb.close();
?}

?public static void main(String[] args) {
??Excel t = new Excel("d:\\test.xls");
??Vector v = new Vector();
??try {
???v.addElement("ding,wen,yuan");
???v.addElement("ding,wen,yuan");
???t.addSheet("first");
???t.addContent(v, 3);

???v.clear();
???v.addElement("xuhy,hai,yong");
???v.addElement("xuhy,hai,yong");
???t.addSheet("second");
???t.addContent(v, 3);

???v.clear();
???v.addElement("wu,jia,qian");
???v.addElement("wu,jia,qian");
???t.addSheet("third");
???t.addContent(v, 3);

???t.createExcel();
??} catch (Exception e) {
???e.printStackTrace();
??}

?}

}

轉自:http://www.aygfsteel.com/wujiaqian/archive/2006/12/21/89308.html?Pending=true#Post