有時候我們會需要做excel的報表,下面這個例子詳細的給出了讀寫及定義樣式的方法。
(jexcel下載)
package com.test;

import java.io.File;
import java.io.IOException;

import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.Colour;
import jxl.read.biff.BiffException;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;

/**
?*
?* CopyRight (C) m.tkk7.com/ilovezmh? All rights reserved.<p>
?*
?* WuHan Inpoint Information Technology Development,Inc.<p>
?*
?* Author zhu<p>
?*
?* @version 1.0??? 2007-2-6
?*
?* <p>Base on : JDK1.5<p>
?*
?*/

public class JexcelSample {
?
?/**
? * 寫excel文件
? *
? */
?public void writeExc(File filename){
??WritableWorkbook wwb = null;
??try
??{
???wwb = Workbook.createWorkbook(filename); ??
??}
??catch (Exception e){
???e.printStackTrace();
??}
??
??//創建Excel工作表
??WritableSheet ws = wwb.createSheet("通訊錄", 0);//創建sheet
??try {
???ws.mergeCells(0, 0, 2, 1);//合并單元格(左列，左行，右列，右行)從第1行第1列到第2行第3列
???Label header = new Label(0, 0, "通訊錄(191026班)", getHeader());
???ws.addCell(header);//寫入頭
???Label l = new Label(0, 2, "姓名", getTitle());//第3行
???ws.addCell(l);
???l = new Label(1, 2, "電話", getTitle());
???ws.addCell(l);
???l = new Label(2, 2, "地址", getTitle());
???ws.addCell(l);
???l = new Label(0, 3, "小祝", getNormolCell());//第4行
???ws.addCell(l);
???l = new Label(1, 3, "1314***0974", getNormolCell());
???ws.addCell(l);
???l = new Label(2, 3, "武漢武昌", getNormolCell());
???ws.addCell(l);
???l = new Label(0, 4, "小施", getNormolCell());//第5行
???ws.addCell(l);
???l = new Label(1, 4, "1347***5057", getNormolCell());
???ws.addCell(l);
???l = new Label(2, 4, "武漢武昌", getNormolCell());
???ws.addCell(l);
???ws.setColumnView(0,20);//設置列寬
???ws.setColumnView(1,20);
???ws.setColumnView(2,40);
???ws.setRowView(0,400);//設置行高
???ws.setRowView(1,400);
???ws.setRowView(2,500);
???ws.setRowView(3,500);
???ws.setRowView(4,500);
??} catch (RowsExceededException e1) {
???e1.printStackTrace();
??} catch (WriteException e1) {
???e1.printStackTrace();
??}
??
??//輸出流
??try {
???wwb.write();
??} catch (IOException ex) {
???// TODO 自動生成 catch 塊
???ex.printStackTrace();
??}
??//關閉流
??try {
???wwb.close();
??} catch (WriteException ex) {
???// TODO 自動生成 catch 塊
???ex.printStackTrace();
??} catch (IOException ex) {
???// TODO 自動生成 catch 塊
???ex.printStackTrace();
??}
??//outStream.close();
??System.out.println("寫入成功！\n");
?}
?
?public void readExc(File filename) throws BiffException, IOException{

??? Workbook wb = Workbook.getWorkbook(filename);
??? Sheet s = wb.getSheet(0);//第1個sheet
??? Cell c = null;
??? int row = s.getRows();//總行數
??? int col = s.getColumns();//總列數
??? for(int i=0;i<row;i++){
???? for(int j=0;j<col;j++){
????? c = s.getCell(j,i);
????? System.out.print(c.getContents()+"? ");
???? }
???? System.out.println();
??? }??
?}
?
?/**
? * 設置頭的樣式
? * @return
? */
?public static WritableCellFormat getHeader(){
??WritableFont font = new? WritableFont(WritableFont.TIMES, 24 ,WritableFont.BOLD);//定義字體
??try {
???font.setColour(Colour.BLUE);//藍色字體
??} catch (WriteException e1) {
???// TODO 自動生成 catch 塊
???e1.printStackTrace();
??}
??WritableCellFormat format = new? WritableCellFormat(font);
??try {
???format.setAlignment(jxl.format.Alignment.CENTRE);//左右居中
???format.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);//上下居中
???format.setBorder(Border.ALL,BorderLineStyle.THIN,Colour.BLACK);//黑色邊框
???format.setBackground(Colour.YELLOW);//黃色背景
??} catch (WriteException e) {
???// TODO 自動生成 catch 塊
???e.printStackTrace();
??}
??return format;
?}
?
?/**
? * 設置標題樣式
? * @return
? */
?public static WritableCellFormat getTitle(){
??WritableFont font = new? WritableFont(WritableFont.TIMES, 14);
??try {
???font.setColour(Colour.BLUE);//藍色字體
??} catch (WriteException e1) {
???// TODO 自動生成 catch 塊
???e1.printStackTrace();
??}
??WritableCellFormat format = new? WritableCellFormat(font);
??
??try {
???format.setAlignment(jxl.format.Alignment.CENTRE);
???format.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
???format.setBorder(Border.ALL,BorderLineStyle.THIN,Colour.BLACK);
??} catch (WriteException e) {
???// TODO 自動生成 catch 塊
???e.printStackTrace();
??}
??return format;
?}
?
?/**
? * 設置其他單元格樣式
? * @return
? */
?public static WritableCellFormat getNormolCell(){//12號字體,上下左右居中,帶黑色邊框
??WritableFont font = new? WritableFont(WritableFont.TIMES, 12);
??WritableCellFormat format = new? WritableCellFormat(font);
??try {
???format.setAlignment(jxl.format.Alignment.CENTRE);
???format.setVerticalAlignment(jxl.format.VerticalAlignment.CENTRE);
???format.setBorder(Border.ALL,BorderLineStyle.THIN,Colour.BLACK);
??} catch (WriteException e) {
???// TODO 自動生成 catch 塊
???e.printStackTrace();
??}
??return format;
?}
?
?public static void main(String[] args) throws IOException, BiffException{
??JexcelSample js = new JexcelSample();
??File f = new File("D:\\address.xls");
??f.createNewFile();
??js.writeExc(f);
??js.readExc(f);
?}

}

生成的excel表格如下：