poi 导出excel | 易学教程

controller层使用 poi 导出excel 并下载

1 import org.apache.poi.ss.usermodel.BorderStyle;
2 import org.apache.poi.ss.usermodel.CellStyle;
3 import org.apache.poi.ss.usermodel.Font;
4 import org.apache.poi.ss.usermodel.IndexedColors;
5 import org.apache.poi.ss.util.CellRangeAddress;
6 import org.apache.poi.hssf.usermodel.HSSFCell;
7 import org.apache.poi.hssf.usermodel.HSSFRow;
8 import org.apache.poi.hssf.usermodel.HSSFSheet;
9 import org.apache.poi.hssf.usermodel.HSSFWorkbook;

  Calendar date = Calendar.getInstance();
  String strYear = String.valueOf(date.get(Calendar.YEAR));
  SimpleDateFormat sdf = new 
  SimpleDateFormat("yyyyMMddHHmmss");
  String time = sdf.format(new Date());
  String sheetName = "散埋乱葬报表";            //sheetName
  String fileName = strYear + "散埋乱葬整治情况汇总表" + time + 
  ".xls";  //设置要导出的文件的名字

 HSSFWorkbook wb = new HSSFWorkbook();
 HSSFSheet sheet = wb.createSheet(sheetName);  //创建table工作薄
 HSSFRow row;
 HSSFCell cell;
 row = sheet.createRow(0);   //创建第一行
 cell = row.createCell(0);   //第一行第一个单元格
 cell.setCellValue(head);   //赋值

sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 9));
//合并单元格   起始行,结束行,起始列,结束列
//被合并的单元格  也要创建

   response.setContentType("application/octet-stream");
   response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName, "utf-8"));
    response.flushBuffer();
    wb.write(response.getOutputStream());

CellStyle cellStyle=wb.createCellStyle();  //创建格式

cellStyle.setWrapText(true);//自动换行

cellStyle.setBorderBottom(BorderStyle.THIN);//设置底部边框cellStyle.setBottomBorderColor(IndexedColors.BLACK.getIndex());//设置底部边框颜色cellStyle.setBorderLeft(BorderStyle.THIN);//设置左部边框cellStyle.setLeftBorderColor(IndexedColors.BLACK.getIndex());//设置左部边框颜色cellStyle.setBorderRight(BorderStyle.THIN);//设置右部边框cellStyle.setRightBorderColor(IndexedColors.BLACK.getIndex());//设置右部边框颜色cellStyle.setBorderTop(BorderStyle.THIN);//设置顶部边框cellStyle.setTopBorderColor(IndexedColors.BLACK.getIndex());//设置顶部边框颜色

sheet.setColumnWidth(0,9*256);  //设置列宽

row.setHeightInPoints(40);//设置行高

cell.setCellStyle(cellstyle);  //使用格式

Font font2=wb.createFont();font2.setFontHeightInPoints((short)11);font2.setFontName("宋体");cellStyle.setFont(font2);     //设置字体

来源：https://www.cnblogs.com/kaokao/p/11951599.html

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