poi生成excel代码示例

HSSFWorkbook workBook = new HSSFWorkbook();

HSSFSheet sheet = workBook.createSheet();

// 设置excel每列宽度

sheet.setColumnWidth(0, 5000);

sheet.setColumnWidth(1, 5000);

sheet.setColumnWidth(2, 5000);

sheet.setColumnWidth(3, 5000);

sheet.setColumnWidth(4, 5000);

sheet.setColumnWidth(5, 5000);

List<HSSFRow> rsl = new ArrayList<HSSFRow>();

HSSFRow curRow2 = sheet.createRow(0);

curRow2.setHeight((short)500);

rsl.add(curRow2);

{

// 创建字体样式

HSSFFont font = workBook.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 = workBook.createCellStyle();

style.setFont(font);// 设置字体

HSSFCell cell0 = rsl.get(0).createCell(0);

cell0.setCellValue("承建单位");

cell0.setCellStyle(style);

HSSFCell cell1 = rsl.get(0).createCell(1);

cell1.setCellValue("承建类别");

cell1.setCellStyle(style);

HSSFCell cell2 = rsl.get(0).createCell(2);

cell2.setCellValue("未审理");

cell2.setCellStyle(style);

HSSFCell cell3 = rsl.get(0).createCell(3);

cell3.setCellValue("审理中");

cell3.setCellStyle(style);

HSSFCell cell4 = rsl.get(0).createCell(4);

cell4.setCellValue("审理完毕");

cell4.setCellStyle(style);

HSSFCell cell5 = rsl.get(0).createCell(5);

cell5.setCellValue("汇总");

cell5.setCellStyle(style);

}

for (int i = 0; i < retList.size(); i++) {

HSSFRow curRow = sheet.createRow(i+1);

rsl.add(curRow);

Map<String, String> im = retList.get(i);

HSSFCell cell0 = rsl.get(i+1).createCell(0);

cell0.setCellValue(im.get("GKDW"));

HSSFCell cell1 = rsl.get(i+1).createCell(1);

cell1.setCellValue(new String(im.get("CJLB")));

HSSFCell cell2 = rsl.get(i+1).createCell(2);

Object o2 = im.get("AUDITBEFORE");

cell2.setCellValue(o2.toString());

HSSFCell cell3 = rsl.get(i+1).createCell(3);

Object o3 = im.get("AUDITING");

cell3.setCellValue(o3.toString());

HSSFCell cell4 = rsl.get(i+1).createCell(4);

Object o4 = im.get("AUDITING");

cell4.setCellValue(o4.toString());

HSSFCell cell5 = rsl.get(i+1).createCell(5);

Object o5 = im.get("AUDITALL");

cell5.setCellValue(o5.toString());

}

// FileOutputStream fileOut = new FileOutputStream(new File(

// "d:/ttbb.xls"));

//

// fileOut.close();

ServletOutputStream os = response.getOutputStream();

response.setContentType("application/x-download");

response.addHeader("Content-Disposition","attachment;filename=download.xls");

workBook.write(os);

其它参考资料：

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.baidu.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();

}

}

注：HSSFWorkbook，XSSFWorkbook的区别：前者是解析出来excel 2007 以前版本的，后缀名为xls的，后者是解析excel 2007 版的，后缀名为xlsx。

文章来源：http://hi.baidu.com/suny%5Fduan/blog/item/d528d5112b03cff0c3ce79a6.html

2、有模板，文件头标题都写好，只要循环添加数据的方法

Java代码


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();

}

}

}