poi-12创建用户自定义数据格式

import java.io.FileOutputStream;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.DataFormat;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
public class Demo15 {
public static void main(String[] args) throws Exception{
Workbook wb=new HSSFWorkbook();                 // 定义一个新的工作簿
Sheet sheet=wb.createSheet("第一个Sheet页");   // 创建第一个Sheet页
CellStyle style;
DataFormat format=wb.createDataFormat();
Row row;
Cell cell;
short rowNum=0;
short colNum=0;

row=sheet.createRow(rowNum++);
cell=row.createCell(colNum);
cell.setCellValue(111111.25);

style=wb.createCellStyle();
style. setDataFormat(format.getFormat("0.0"));                 // 设置数据格式
cell.setCellStyle(style);

row=sheet.createRow(rowNum++);
cell=row.createCell(colNum);
cell.setCellValue(1111111.25);
style=wb.createCellStyle();
style. setDataFormat(format.getFormat("#,##0.000"));     //  设置数据格式
cell.setCellStyle(style);

FileOutputStream fileOut=new FileOutputStream("c:\\工作簿.xls");
wb.write(fileOut);
fileOut.close();
}

}