批量生成随机字符串并保存到excel

需要导入jxl.jar，commons-lang-2.6.jar

链接：https://pan.baidu.com/s/1NPPh24XWxkka68x2JQYlYA
提取码：jvj3

链接：https://pan.baidu.com/s/1d68GzCbXFIx41uPiWZpAkg
提取码：z2az

package exceldemo;

import java.io.File;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;

import org.apache.commons.lang.RandomStringUtils;
import org.junit.Test;

import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;

/**
 * 
 * @author csh
 * 批量创建随机字符串并保存到excel
 */

public class JxlWriteDemo {

    public static void main(String[] args) throws IOException, WriteException {
        Random r = new Random();
        Date date = new Date();
        // String curdate = date.toString();
        DateFormat df6 = new SimpleDateFormat("yyMMddhhmmss");
        String formatdate = df6.format(date);
        File fileDir=new File("D:\exceldata");
        if(!fileDir.exists()){
            fileDir.mkdir();
        }
        File xlsFile = new File("D:\exceldata\jxl" + formatdate + ".xls");

        // 创建一个工作簿
        WritableWorkbook workbook = Workbook.createWorkbook(xlsFile);
        // 创建一个工作表
        WritableSheet sheet = workbook.createSheet("sheet1", 0);
        // 设置titles
        String[] titles = { "卡号" };
        // 设置单元格
        Label label = null;
        // 给第一行设置列名
        for (int i = 0; i < titles.length; i++) {
            // x,y,第一行的列名
            Label lable = new Label(i, 0, titles[i]);
            // 添加单元格
            sheet.addCell(lable);

        }

        for (int row = 1; row < 3000; row++) {
            for (int col = 0; col < 1; col++) {
                // //获取当前时间的时间戳
                // long currentTimeMillis = System.currentTimeMillis();
                // 生成三位随机整数
                int rundomInt = r.nextInt(999);
                // 如果不足三位前面补0
                String vipCode = String.format("%03d", rundomInt);

                // 随机生成字符串
                String filename = RandomStringUtils.randomAlphanumeric(10);
                // 随机字符串+日期，生成激活码
                String code = filename + formatdate;
                // 向工作表中添加数据
                sheet.addCell(new Label(col, row, "VIP" + filename + vipCode));
            }
        }
        workbook.write();
        workbook.close();
        
    }
}