利用jxl操作Excel

我这里只是几个简单的操作。更多操作请看它自身带的API及例子。

需要导入jxl的jar包，在哪儿下我就不说了，自己去摆渡一下。
[quote]
jexcelapi_HOME/jxl.jar
[/quote]

package com.yx.zzg.jxl;

import java.awt.Color;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import jxl.Cell;
import jxl.CellType;
import jxl.Sheet;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.Colour;
import jxl.format.VerticalAlignment;
import jxl.read.biff.BiffException;
import jxl.write.DateFormat;
import jxl.write.Label;
import jxl.write.NumberFormat;
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;

public class JxlUtil {

	public static void createExcel(String path, String sheetName,
			String[] dataTitle) {
		WritableWorkbook wwk = null;
		OutputStream os = null;
		try {
			os = new BufferedOutputStream(new FileOutputStream(path));
			wwk = Workbook.createWorkbook(os);
			WritableSheet sheet = wwk.createSheet(sheetName, 0);
			initSheet(sheet);
			Label label;
			for (int i = 0; i < dataTitle.length; i++) {
				label = new Label(i, 0, dataTitle[i], setTitleCellFormat());
				sheet.addCell(label);
			}
			insertRowData(sheet, 1, new String[] { "000000001", "张三", "90",
					"75", "85", "240" },
					setDataCellFormat(CellType.STRING_FORMULA));
			wwk.write();
			wwk.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} catch (RowsExceededException e) {
			e.printStackTrace();
		} catch (WriteException e) {
			e.printStackTrace();
		} finally {
			try {
				if (os != null) {
					os.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
	}

	/**
	 * 初始化表格属性
	 * 
	 * @param sheet
	 */
	public static void initSheet(WritableSheet sheet) {
		// 设置列的默认宽度
		sheet.getSettings().setDefaultColumnWidth(20);
		// 设置第一列的宽度
		sheet.setColumnView(0, 20);
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String[] title = { "学号", "姓名", "语文", "数学", "英语", "总分" };
		String fromPath = "C:\\Users\\toshiba\\work\\dd.xls";
		createExcel(fromPath, "sheet1", title);
		readExcel(fromPath);
	}

	public static void readExcel(String fromPath) {
		File fromFile = new File(fromPath);
		Workbook wb = null;
		try {
			wb = Workbook.getWorkbook(fromFile);
			Sheet sheet = wb.getSheet(0);
			for (int i = 0; i < sheet.getRows(); i++) {
				for (int j = 0; j < sheet.getColumns(); j++) {
					Cell c = sheet.getCell(j, i);
					System.out.print(c.getContents() + " ");
					if ((j + 1) == sheet.getColumns()) {
						System.out.println();
					}
				}
			}
		} catch (BiffException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			wb.close();
		}
	}

	/**
	 * 设置数据的格式并返回
	 * 
	 * @param type
	 * @return
	 */
	public static WritableCellFormat setDataCellFormat(CellType type) {
		WritableCellFormat wcf = null;
		if (type == CellType.NUMBER || type == CellType.NUMBER_FORMULA) {
			NumberFormat nf = new NumberFormat("#.00");
			wcf = new WritableCellFormat(nf);
		} else if (type == CellType.DATE || type == CellType.DATE_FORMULA) {
			DateFormat dd = new DateFormat("yyyy-MM-dd hh:mm:ss");
			wcf = new WritableCellFormat(dd);
		} else {
			WritableFont wf = new WritableFont(WritableFont.TIMES, 10,
					WritableFont.NO_BOLD, false);
			wcf = new WritableCellFormat(wf);
		}
		try {
			// 对齐方式
			wcf.setAlignment(Alignment.CENTRE);
			wcf.setVerticalAlignment(VerticalAlignment.CENTRE);
			// 边框
			wcf.setBorder(Border.LEFT, BorderLineStyle.THIN);
			wcf.setBorder(Border.BOTTOM, BorderLineStyle.THIN);
			wcf.setBorder(Border.RIGHT, BorderLineStyle.THIN);
			// 背景色
			wcf.setBackground(Colour.WHITE);
			// 自动换行
			wcf.setWrap(true);
		} catch (WriteException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return wcf;
	}

	/**
	 * 设置数据表头格式并返回
	 * 
	 * @return
	 */
	public static WritableCellFormat setTitleCellFormat() {
		WritableCellFormat wcf = null;
		WritableFont wf = new WritableFont(WritableFont.TIMES, 12,
				WritableFont.NO_BOLD, false);
		try {
			wf.setColour(Colour.RED);
			wcf = new WritableCellFormat(wf);
			// 设置对齐格式
			wcf.setAlignment(Alignment.CENTRE);
			wcf.setVerticalAlignment(VerticalAlignment.CENTRE);
			// 设置边框
			wcf.setBorder(Border.ALL, BorderLineStyle.THIN);
			// 设置背景色
			wcf.setBackground(Colour.GREY_25_PERCENT);
		} catch (WriteException e) {
			e.printStackTrace();
		}
		return wcf;
	}

	/**
	 * 插入一条数据
	 * 
	 * @param sheet
	 * @param row
	 * @param dataArr
	 * @param format
	 */
	public static void insertRowData(WritableSheet sheet, Integer row,
			String[] dataArr, WritableCellFormat format) {
		try {
			Label label;
			for (int i = 0; i < dataArr.length; i++) {
				label = new Label(i, row, dataArr[i], format);
				sheet.addCell(label);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

}