目录

Apache-Pol-excel

目录

Apache Pol (excel)

https://i-blog.csdnimg.cn/direct/e4b6071416c64c1b8b53094f187fa56a.png 是一个处理微软各种文件格式的开源项目,一般情况下,POI都是用来操作EXCEL文件的 读和写操作 test测试 /*

  • 使用POI操作Excel文件
  • / public class POITest { /
  • 通过POI创建Excel文件并写入文件内容
  • / public static void write() throws Exception{ //在内存中创建一个excel文件 XSSFWorkbook excel=new XSSFWorkbook(); //在Excel文件中创建一个sheet页 XSSFSheet sheet = excel.createSheet(“info”); //在sheet中创建行对象,rownum编号从0开始 XSSFRow row = sheet.createRow(1); //创建单元格并写入文件内容 row.createCell(1).setCellValue(“姓名”); row.createCell(2).setCellValue(“城市”); //创建一个新行 row = sheet.createRow(2); row.createCell(1).setCellValue(“张三”); row.createCell(2).setCellValue(“北京”); row = sheet.createRow(3); row.createCell(1).setCellValue(“李四”); row.createCell(2).setCellValue(“南京”); //通过输出流将内存中的Excel文件写入磁盘中 FileOutputStream out=new FileOutputStream(new File(“/Users/renliaoliao/Desktop/info.xlsx”)); excel.write(out); //关闭资源 out.close(); excel.close(); } /
  • 通过POI读取Excel文件中的内容
    • / public static void read() throws Exception{ //读取磁盘上以及存在的excel文件 FileInputStream in = new FileInputStream(new File(“/Users/renliaoliao/Desktop/info.xlsx”)); XSSFWorkbook excel = new XSSFWorkbook(in); //将文本文件读取出来 读取第一个sheet页 XSSFSheet sheet = excel.getSheetAt(0); //获取sheet页中最后一行的行号 int lastRowNum = sheet.getLastRowNum(); for (int i=1;i<=lastRowNum;i++){ //获取某一行 XSSFRow row = sheet.getRow(i); //获取单元格对象 String cellValue1 = row.getCell(1).getStringCellValue(); String cellValue2 = row.getCell(2).getStringCellValue(); System.out.println(cellValue1+" “+cellValue2); } //关闭资源 in.close(); excel.close(); } public static void main(String[] args) throws Exception { //write(); read(); } } https://i-blog.csdnimg.cn/direct/dbb35153a9c14c958cc7352d5e085f61.png 导出运营数据表数据 /
  • 导出运营数据报表
  • */ @Override public void expo rtBusinessData(HttpServletResponse response) { //1.查询数据库 获取运营数据 LocalDate dateBegin = LocalDate.now().minusDays(30); LocalDate dateEnd = LocalDate.now().minusDays(1); //查询概览数据 BusinessDataVO businessDataVO = workspaceService.getBusinessData(LocalDateTime.of(dateBegin, LocalTime.MIN), LocalDateTime.of(dateEnd, LocalTime.MAX)); //2.通过POI将数据写入到Excel文件中 InputStream in = this.getClass().getClassLoader().getResourceAsStream(“template/运营数据报表模板.xlsx”); try { //基于模板文件创建一个新的excel文件 XSSFWorkbook excel = new XSSFWorkbook(in); //获取表格标签的sheet页 XSSFSheet sheet = excel.getSheet(“Sheet1”); //填充数据–时间 sheet.getRow(1).getCell(1).setCellValue(“时间:"+dateBegin+“至”+dateEnd); //获取第四行 XSSFRow row = sheet.getRow(3); row.getCell(2).setCellValue(businessDataVO.getTurnover()); row.getCell(4).setCellValue(businessDataVO.getOrderCompletionRate()); row.getCell(6).setCellValue(businessDataVO.getNewUsers()); //获得第五行 row = sheet.getRow(4); row.getCell(2).setCellValue(businessDataVO.getValidOrderCount()); row.getCell(4).setCellValue(businessDataVO.getUnitPrice()); //填充明细数据 for (int i = 0; i < 30; i++) { LocalDate date = dateBegin.plusDays(i); //查询某一天的营业数据 BusinessDataVO businessData = workspaceService.getBusinessData(LocalDateTime.of(date, LocalTime.MIN), LocalDateTime.of(date, LocalTime.MAX)); //获得某一行 row=sheet.getRow(7+i); row.getCell(1).setCellValue(date.toString()); row.getCell(2).setCellValue(businessData.getTurnover()); row.getCell(3).setCellValue(businessData.getValidOrderCount()); row.getCell(4).setCellValue(businessData.getOrderCompletionRate()); row.getCell(5).setCellValue(businessData.getUnitPrice()); row.getCell(6).setCellValue(businessData.getNewUsers()); } //3.通过输出流将excel文件下载到客户端浏览器 ServletOutputStream out = response.getOutputStream(); excel.write(out); //关闭资源 out.close(); excel.close(); } catch (IOException e) { throw new RuntimeException(e); } } }