poi生成Excel
1、无模板生成Excel的方法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
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 stubtry {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();}}}
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