jxl操作EXcel

Jxl读写Excel。

/**
 * 
 */
package com.test.jxl;

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

import jxl.Cell;
import jxl.CellType;
import jxl.Sheet;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Colour;
import jxl.format.UnderlineStyle;
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;

/**
 * @author Administrator
 * 利用jxl读写Excel。
 */
public class ReadExcel {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// 源文件位置
		String sourceName = "C:/Documents and Settings/Administrator/桌面/demo.xls";
		// 保存到的位置
		String saveName = "C:/Documents and Settings/Administrator/桌面/test.xls";
		
		try {
			// 获取文档对象
			Workbook wb = Workbook.getWorkbook(new File(sourceName));
			// 创建一个写的对象
			WritableWorkbook newWb = Workbook.createWorkbook(new File(saveName));
			// 获取所以的Sheet
			Sheet[] sheets = wb.getSheets();
			// 遍历集合
			for (int i=0;i<sheets.length;i++) {
				Sheet sheet = sheets[i];
				// Sheet名字
				String sheetName = sheet.getName();
				// 设置新的文件的Sheet名字
				WritableSheet newSheet = newWb.createSheet(sheetName, i);
				
				// 获取行数
				int rowNum = sheet.getRows();
				// 获取列数
				int colNum = sheet.getColumns();
				for (int m = 0;m < colNum; m++) {
					if (m == 4) {
						newSheet.setColumnView(m, 40);
					}
					else {
						newSheet.setColumnView(m, 20);
					}
				}
				for (int x=0;x<rowNum;x++) {
					if (x == 0) {
						// 添加一行标题，并设置字体,红色字体，绿色背景
						WritableFont font = new WritableFont(WritableFont.ARIAL,15,WritableFont.BOLD,false,UnderlineStyle.NO_UNDERLINE,Colour.RED);
						WritableCellFormat format = new WritableCellFormat(font);
						// 居中显示
						format.setAlignment(Alignment.CENTRE);
						// 设置背景色
						format.setBackground(Colour.GREEN);
						// 设置前景色
						Label head = new Label(0,0,"通讯录",format);
						head.setCellFormat(format);
						newSheet.addCell(head);
						// 合并单元格
						newSheet.mergeCells(0, 0, colNum, 2);
						
					}
					for (int y=0;y<colNum;y++) {
						// 得到单元格对象
						Cell cell = sheet.getCell(y,x);
						// 获取单元格的内容
						String content = cell.getContents();
						if (cell.getType() == CellType.DATE) {
							// 原文件中日前是yyyy-m-d/yyyy-mm-d/yyyy-mm-dd
							//这里读取到的是yy-m-d/yy-mm-d/yy-mm-dd
							System.out.println("日前转化前：" + content);
							// 下面将日期转化为yyyy-m-d/yyyy-mm-d/yyyy-m-dd/yyyy-mm-dd
							String[] strArr = content.split("-");
							String year = strArr[0];
							String month = strArr[1];
							String date = strArr[2];
							String prefix = "";
							if (year.length() == 2) {
								if (Integer.valueOf(year) > 60) {
									prefix = "19";
								}
								else {
									prefix = "20";
								}
							}
							content = prefix + year + "-" + month + "-" + date;
							System.out.println("日期转化后：" + content);
						}
						Label label = null;
						if (y == 4) { // 将地址一列设置为自动换行
							// 设置列自动换行
							WritableCellFormat wcf = new WritableCellFormat();
							wcf.setWrap(true);
							label = new Label(y,x+2,content,wcf);
						}
						else {
							label = new Label(y,x+2, content);
						}
						// 
						newSheet.addCell(label);
					}
				}
			}
			// 写入到文件
			newWb.write();
			// 关闭文档
			wb.close();
			newWb.close();
		} catch (BiffException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (RowsExceededException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (WriteException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}