Java创建与读取Excel

package yz.zrk;

import java.io.File;
import jxl.Workbook;
import jxl.write.*;


public class CreateExcle {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try {
			//创建一个文件对象
			WritableWorkbook book = Workbook.createWorkbook(new File("test.xls"));
			//创建sheet，也就是左下方的页码
			WritableSheet sheet = book.createSheet("第一页", 0);
			
			@SuppressWarnings("unused")
			WritableSheet s = book.createSheet("第二页", 1);
			
			
			System.out.println(book.getNumberOfSheets());
			
			//向单元格（第一行第一列）写入字符串
			Label label = new Label(0,0,"test");
			//将单元格添加到工作表中
			sheet.addCell(label);
			//向单元格写入数字
			jxl.write.Number num = new jxl.write.Number(1,0,100.19);
			//将单元格添加到工作表中
			sheet.addCell(num);
			//写入数据
			book.write();
			//关闭
			book.close();
		}
		catch(Exception e ) {
			e.printStackTrace();
		}
		System.out.println("the excel has been created...");
	}

}



package yz.zrk;

import java.io.File;
import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;

public class ReadExcel {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		try {
			//创建一个文件对象
			File f = new File("test.xls");
			//当文件存在时，进行读取操作
			if(f.exists()) {
				Workbook book = Workbook.getWorkbook(f);
				Sheet sheet = book.getSheet(0);				
				for(int i=0;i<sheet.getRows();i++) {
					for(int j=0;j<sheet.getColumns();j++) {
						//得到单元格对象
						Cell cell = sheet.getCell(j,i);
						//得到该单元格的内容
						String content = cell.getContents();
						System.out.println(content);
					}
				}
				book.close();
			}
		}
		catch(Exception e) {
			e.printStackTrace();
		}
	}
}