//查询所有学生信息
        List<Student> list = stuService.selectAll();
        //创建输出流
        OutputStream fileOut = null;
        try {
            // 导出
            // 重置输出流
            response.reset();
            // 设置导出Excel报表的导出形式
            response.setContentType("application/vnd.ms-excel");
            // 自定义响应文件名
            String fileName = new String("学生信息表".getBytes("utf-8"),
                    "ISO-8859-1");
            response.setHeader("Content-disposition", "attachment;filename="
                    + fileName + ".xls");
            fileOut = response.getOutputStream();
            // 创建工作空间
            Workbook wb = new HSSFWorkbook();
            // 创建sheet
            Sheet sheet = wb.createSheet("sheet1");
            // 设置列宽
            sheet.setColumnWidth(0, 2300);
            sheet.setColumnWidth(1, 2300);
            sheet.setColumnWidth(2, 2300);
            sheet.setColumnWidth(3, 3400);

            CreationHelper creationHelper = wb.getCreationHelper();
            // 创建行 从 0 开始为第一行
            Row row = sheet.createRow((short) 0);
            row.setHeight((short) 450);// 目的是想把行高设置成25px
            // 创建列 从0 开始为第一列
            // 第一行的数据
            row.createCell(0).setCellValue(
                    creationHelper.createRichTextString("学生编号")
            );

            row.createCell(1).setCellValue(
                    creationHelper.createRichTextString("学生姓名"));
            // 设置String
            row.createCell(2).setCellValue(
                    creationHelper.createRichTextString("就业单位"));
            row.createCell(3).setCellValue(
                    creationHelper.createRichTextString("学生图片"));
            row.createCell(4).setCellValue(
                    creationHelper.createRichTextString("学生薪资"));
            row.createCell(5).setCellValue(
                    creationHelper.createRichTextString("入职时间"));
            row.createCell(6).setCellValue(
                    creationHelper.createRichTextString("培训时间"));
            row.createCell(7).setCellValue(
                    creationHelper.createRichTextString("是否是明星学员"));
            row.createCell(8).setCellValue(
                    creationHelper.createRichTextString("学校"));
            row.createCell(9).setCellValue(
                    creationHelper.createRichTextString("学历"));
            row.createCell(10).setCellValue(
                    creationHelper.createRichTextString("工作地址"));
            row.createCell(11).setCellValue(
                    creationHelper.createRichTextString("学生感言"));
            row.createCell(12).setCellValue(
                    creationHelper.createRichTextString("状态"));
            row.createCell(13).setCellValue(
                    creationHelper.createRichTextString("备注"));
            row.createCell(14).setCellValue(
                    creationHelper.createRichTextString("作者"));

            int i=1;
            for (Student stu : list) {
                
                Row row1 = sheet.createRow((short) i);
                row1.setHeight((short) 450);// 目的是想把行高设置成25px
                
                String uid=String.valueOf(stu.getStuId()); 
                // 第二行的数据
                row1.createCell(0).setCellValue(
                        creationHelper.createRichTextString(uid));
                row1.createCell(1).setCellValue(
                        creationHelper.createRichTextString(stu.getStuName()));
                // 设置String
                row1.createCell(2).setCellValue(
                        creationHelper.createRichTextString(stu.getStuCompany()));
                row1.createCell(3).setCellValue(
                        creationHelper.createRichTextString(stu.getStuPicture()));
                row1.createCell(4).setCellValue(
                        creationHelper.createRichTextString(String.valueOf(stu.getStuSalary())));
                row1.createCell(5).setCellValue(
                        creationHelper.createRichTextString(String.valueOf(new SimpleDateFormat("yyyy-MM-dd").format(stu.getStuEntrytime()))));
                row1.createCell(6).setCellValue(
                        creationHelper.createRichTextString(String.valueOf(new SimpleDateFormat("yyyy-MM-dd").format(stu.getStuTrainingtime()))));
                String isStart="否";
                if(stu.getStuIsstar()!=null){
                    if(stu.getStuIsstar()==1){
                        isStart="是";
                    }
                }
                row1.createCell(7).setCellValue(
                        creationHelper.createRichTextString(isStart));
                row1.createCell(8).setCellValue(
                        creationHelper.createRichTextString(String.valueOf(stu.getStuSchool())));
                row1.createCell(9).setCellValue(
                        creationHelper.createRichTextString(stu.getStuEducation()));
                row1.createCell(10).setCellValue(
                        creationHelper.createRichTextString(stu.getStuWorkaddress()));
                row1.createCell(11).setCellValue(
                        creationHelper.createRichTextString(stu.getStuRecollections()));
                //1表示缉编中       2 待审核   3  待发布   4 取消发布    5 过期 
                String style="";
                //判断状态
                switch (stu.getStuState()) {
                case 1:style="缉编中";break;
                case 2:style="待审核";break;
                case 3:style="待发布";break;
                case 4:style="取消发布";break;
                case 5:style="过期 ";break;
                }
                row1.createCell(12).setCellValue(
                        creationHelper.createRichTextString(style));
                row1.createCell(13).setCellValue(
                        creationHelper.createRichTextString(stu.getStuNote()));
                row1.createCell(14).setCellValue(
                        creationHelper.createRichTextString(stu.getStuWriter()));
                
                i++;
            }

            
            wb.write(fileOut);
            fileOut.close();
            
        } catch (Exception e) {
            e.printStackTrace();
        }