java 导出表格 poi的使用

Posted 2021-03-19 覃上

HSSFWorkbook workbook = new HSSFWorkbook();

HSSFSheet sheet = workbook.createSheet("excel表格");

HSSFRow rowm = sheet.createRow(0);
HSSFCell cellTitle = rowm.createCell(0);

HSSFFont font = workbook.createFont();

// 设置字体大小
font.setFontHeightInPoints((short) 12);
// 字体加粗
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// 设置字体名字
font.setFontName("宋体");
// 设置样式
HSSFCellStyle style = workbook.createCellStyle();
// 设置低边框
style.setBorderBottom(HSSFCellStyle.BORDER_THIN);
// 设置低边框颜色
style.setBottomBorderColor(HSSFColor.BLACK.index);
// 设置右边框
style.setBorderRight(HSSFCellStyle.BORDER_THIN);
// 设置顶边框
style.setTopBorderColor(HSSFColor.BLACK.index);
// 设置顶边框颜色
style.setTopBorderColor(HSSFColor.BLACK.index);
// 在样式中应用设置的字体
style.setFont(font);
// 设置自动换行
style.setWrapText(false);
// 设置水平对齐的样式为居中对齐；
style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

/**
 * 发送响应流方法
 * @param response
 * @param fileName
 */
public void setResponseHeader(HttpServletResponse response, String fileName) {
    try {
        try {
            fileName = new String(fileName.getBytes(), "ISO8859-1");
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        response.setContentType("application/octet-stream");
        //这后面可以设置导出Excel的名称，此例中名为student.xls
        response.setHeader("Content-disposition", "attachment;filename=" + fileName);
        response.flushBuffer();
    } catch (Exception ex) {
        ex.printStackTrace();
    }
}

//响应到客户端
try {
// response.setContentType("application/x-download");
// response.setHeader("content-type", "application/octet-stream");
// response.setContentType("application/octet-stream");
   exp.setResponseHeader(response, fileName);
   OutputStream os = response.getOutputStream();

   workbook.write(out);

  os.flush();
  os.close();
} catch (Exception e) {
    e.printStackTrace();
}

设置单元个斜线

HSSFCellStyle style = exp.getStyle(workbook);
style.setAlignment(HSSFCellStyle.ALIGN_LEFT);
style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
sheet.setColumnWidth(0,22*256);
HSSFPatriarch patriarch = sheet.createDrawingPatriarch();
//前四个参数代表自动布满单元格，后四个参数代表第1列第3行
HSSFClientAnchor a = new HSSFClientAnchor(0, 0, 1023, 255, (short)0, 2, (short)0, 2);
HSSFSimpleShape shape1 = patriarch.createSimpleShape(a);
shape1.setShapeType(HSSFSimpleShape.OBJECT_TYPE_LINE);
shape1.setLineStyle(HSSFSimpleShape.LINESTYLE_SOLID);
hssfCell.setCellValue(value);
sheet.createFreezePane(1,3,1,3);