java操作Excel的poi 格式设置

格式设置

  

package com.java.poi;

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;

import java.io.FileOutputStream;
import java.util.Calendar;
import java.util.Date;

/**
 * 格式化
 * @author nidegui
 * @create 2019-06-17 9:46
 */
public class Test4 {

    public static void main(String[] args) throws Exception {
        Workbook wb=new HSSFWorkbook();
        Sheet sheet = wb.createSheet("创建sheet页");
        Row row = sheet.createRow(0);//创建行
        Cell cell = row.createCell(0);//创建一个单元格, 第一列
        cell.setCellValue(new Date());  //给单元格设置值

        CreationHelper creationHelper = wb.getCreationHelper();


        CellStyle cellStyle = wb.createCellStyle();  //创建工作簿的样式
        cellStyle.setDataFormat(creationHelper.createDataFormat().getFormat("yyyy-mm-dd hh:mm:ss"));
        cell=row.createCell(1); //第二列
        cell.setCellValue(new Date());
        cell.setCellStyle(cellStyle);

        /**
         * 第二中样式
         */
        row.createCell(2); //第三列
        cell.setCellValue(Calendar.getInstance());
        cell.setCellStyle(cellStyle);


        FileOutputStream fileOutputStream=new FileOutputStream("E:\3.xls");
        wb.write(fileOutputStream);
        fileOutputStream.close();
    }
}

  

原文地址:https://www.cnblogs.com/nidegui/p/11038350.html