`
\===================写======================
package com.test;
import java.io.FileOutputStream;
import java.util.Date;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFDataFormat;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFHyperlink;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.util.CellRangeAddress;
public class PoiCreateExcel {
public static void main(String[] args) throws Exception {
// 创建Excel的工作书册 Workbook,对应到一个excel文档
HSSFWorkbook wb = new HSSFWorkbook();
// 创建Excel的工作sheet,对应到一个excel文档的tab
HSSFSheet sheet = wb.createSheet("sheet1");
// 设置excel每列宽度
sheet.setColumnWidth(0, 4000);
sheet.setColumnWidth(1, 3500);
// 创建字体样式
HSSFFont font = wb.createFont();
font.setFontName("Verdana");
font.setBoldweight((short) 100);
font.setFontHeight((short) 300);
font.setColor(HSSFColor.BLUE.index);
// 创建单元格样式
HSSFCellStyle style = wb.createCellStyle();
style.setAlignment(HSSFCellStyle.ALIGN\_CENTER);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL\_CENTER);
style.setFillForegroundColor(HSSFColor.LIGHT\_TURQUOISE.index);
style.setFillPattern(HSSFCellStyle.SOLID\_FOREGROUND);
// 设置边框
style.setBottomBorderColor(HSSFColor.RED.index);
style.setBorderBottom(HSSFCellStyle.BORDER\_THIN);
style.setBorderLeft(HSSFCellStyle.BORDER\_THIN);
style.setBorderRight(HSSFCellStyle.BORDER\_THIN);
style.setBorderTop(HSSFCellStyle.BORDER\_THIN);
style.setFont(font);// 设置字体
// 创建Excel的sheet的一行
HSSFRow row = sheet.createRow(0);
row.setHeight((short) 500);// 设定行的高度
// 创建一个Excel的单元格
HSSFCell cell = row.createCell(0);
// 合并单元格(startRow,endRow,startColumn,endColumn)
sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 2));
// 给Excel的单元格设置样式和赋值
cell.setCellStyle(style);
cell.setCellValue("hello world");
// 设置单元格内容格式
HSSFCellStyle style1 = wb.createCellStyle();
style1.setDataFormat(HSSFDataFormat.getBuiltinFormat("h:mm:ss"));
style1.setWrapText(true);// 自动换行
row = sheet.createRow(1);
// 设置单元格的样式格式
cell = row.createCell(0);
cell.setCellStyle(style1);
cell.setCellValue(new Date());
// 创建超链接
HSSFHyperlink link = new HSSFHyperlink(HSSFHyperlink.LINK\_URL);
link.setAddress("http://www.developcls.com");
cell = row.createCell(1);
cell.setCellValue("百度");
cell.setHyperlink(link);// 设定单元格的链接
FileOutputStream os = new FileOutputStream("D:\\report\\workbook.xls");
wb.write(os);
os.close();
}
}
\===================读\===============
package com.test;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
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.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellRangeAddress;
public class PoiTestExcel {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
try {
InputStream in = new FileInputStream("D:\\report\\1111.xls");
Workbook work = new HSSFWorkbook(in);
// 得到excel的第0张表
Sheet sheet = work.getSheetAt(0);
// 得到第1行的第一个单元格的样式
Row rowCellStyle = sheet.getRow(1);
CellStyle columnOne = rowCellStyle.getCell(0).getCellStyle();
// 这里面的行和列的数法与计算机里的一样,从0开始是第一
// 填充title数据
Row row = sheet.getRow(0);
Cell cell = row.getCell(0);
cell.setCellValue("2010年花名测");
int i = 2;//计数器
int number = 0;
// 得到行,并填充数据和表格样式
for (;i < 10; i++) {
row = sheet.createRow(i);// 得到行
cell = row.createCell(0);// 得到第0个单元格
cell.setCellValue("琳"+i);// 填充值
cell.setCellStyle(columnOne);// 填充样式
cell = row.createCell(1);
cell.setCellValue("女");
cell.setCellStyle(columnOne);// 填充样式
cell = row.createCell(2);
cell.setCellValue(i+20);
cell.setCellStyle(columnOne);// 填充样式
// .....给每个单元格填充数据和样式
number++;
}
//创建每个单元格,添加样式,最后合并
row = sheet.createRow(i);
cell = row.createCell(0);
cell.setCellValue("总计:" + number + "个学生");// 填充值
cell.setCellStyle(columnOne);
cell = row.createCell(1);
cell.setCellStyle(columnOne);
cell = row.createCell(2);
cell.setCellStyle(columnOne);
// 合并单元格
sheet.addMergedRegion(new CellRangeAddress(i,i,0,2));
FileOutputStream os = new FileOutputStream("D:\\report\\workbook.xls");
work.write(os);
os.close();
} catch (FileNotFoundException e) {
System.out.println("文件路径错误");
e.printStackTrace();
} catch (IOException e) {
System.out.println("文件输入流错误");
e.printStackTrace();
}
}
}
`
更多poi操作excel文章参考:https://www.shangmayuan.com/a/cbf93722e8c44c91ae8d6264.html
thank you!