1.后端

    /*** 导出一对一线下课签到表* @param response* @param selectedArriveTime* @param selectedClassRoom*/@RequestMapping(value = "/exportExcel", method = {RequestMethod.GET})public void exportExcel(HttpServletResponse response, String selectedArriveTime, Integer selectedClassRoom) {//查询当天有一对一线下课同学信息List<TDArrangingReservation> studentInfo = reservationService.getStudentInfo(selectedArriveTime, selectedClassRoom);//创建excel表格if (studentInfo != null && studentInfo.size()  > 0) {//创建HSSFWorkbook对象(excel的文档对象)HSSFWorkbook wb = new HSSFWorkbook();//建立新的sheet对象(excel的表单)HSSFSheet sheet0 = wb.createSheet("sheet0");//创建单元格样式CellStyle centerStyle = wb.createCellStyle();//设置单元格内容的水平对齐方式centerStyle.setAlignment(HorizontalAlignment.CENTER);//设置单元格内容的垂直对齐方式centerStyle.setVerticalAlignment(VerticalAlignment.CENTER);//创建标题行HSSFRow titleRow = sheet0.createRow(0);//设置标题行高titleRow.setHeight((short) 500);//设置标题行String[] titles = {"序号", "学生姓名", "上课时间", "上课教室", "督导/指导教师", "任课老师", "上课科目", "本人签字", "到校时间", "离校时间"};//设置列宽int[] columnWidths = {1500, 3000, 4000, 3000, 4000, 3000, 4000, 3000, 3000, 3000};//设置标题行值和样式for (int i = 0; i < titles.length; i++) {sheet0.setColumnWidth(i, columnWidths[i]);HSSFCell cell = titleRow.createCell(i);cell.setCellValue(titles[i]);cell.setCellStyle(centerStyle);}int rowIndex = 1;String lastStudentName = "";//设置开始合并的行号int mergeStartRow = 1;//循环赋值for (int i = 0; i < studentInfo.size(); i++) {TDArrangingReservation reservation = studentInfo.get(i);//创建数据行HSSFRow row = sheet0.createRow(rowIndex);//设置数据行高row.setHeight((short) 400);//学生姓名String currentStudentName = reservation.getStuNickName() != null ? reservation.getStuNickName() : "";//如果当前学生姓名与上一个不同，且不是第一个学生，则需要合并单元格(合并的是之前一样的数据)。if (!currentStudentName.equals(lastStudentName) && i > 0) {//合并指定列的单元格//学生姓名mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 1, centerStyle);//上课教室mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 3, centerStyle);//督导/指导教师mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 4, centerStyle);//本人签字mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 7, centerStyle);//到校时间mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 8, centerStyle);//离校时间mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 9, centerStyle);mergeStartRow = rowIndex;}//创建单元格，设置值和样式。//序号setCellValueAndStyle(row.createCell(0), String.valueOf(rowIndex), centerStyle);//学生姓名setCellValueAndStyle(row.createCell(1), currentStudentName, centerStyle);//上课时间setCellValueAndStyle(row.createCell(2), reservation.getPreTimeFragment(), centerStyle);//上课教室setCellValueAndStyle(row.createCell(3), reservation.getClassRoom(), centerStyle);//督导/指导教师setCellValueAndStyle(row.createCell(4), reservation.getCounselorName(), centerStyle);//任课老师setCellValueAndStyle(row.createCell(5), reservation.getTeacherName(), centerStyle);//上课科目setCellValueAndStyle(row.createCell(6), reservation.getSubName(), centerStyle);//本人签字setCellValueAndStyle(row.createCell(7), "", centerStyle);//到校时间setCellValueAndStyle(row.createCell(8), "", centerStyle);//离校时间setCellValueAndStyle(row.createCell(9), "", centerStyle);lastStudentName = currentStudentName;rowIndex++;}// 处理最后一组相同学生姓名的合并mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 1, centerStyle);mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 3, centerStyle);mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 4, centerStyle);mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 7, centerStyle);mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 8, centerStyle);mergeCellsIfNeeded(sheet0, mergeStartRow, rowIndex - 1, 9, centerStyle);//输出文件try {OutputStream output = response.getOutputStream();String filename = "一对一线下课签到表";String encodedFilename = URLEncoder.encode(filename, "UTF-8");response.reset();response.setHeader("Content-disposition", "attachment; filename=" + encodedFilename + ".xls");response.setContentType("application/msexcel");wb.write(output);output.close();} catch (Exception e) {e.printStackTrace();}}}/*** 合并单元格* @param sheet* @param firstRow* @param lastRow* @param col* @param style*/private void mergeCellsIfNeeded(HSSFSheet sheet, int firstRow, int lastRow, int col, CellStyle style) {if (firstRow < lastRow) {CellRangeAddress region = new CellRangeAddress(firstRow, lastRow, col, col);sheet.addMergedRegion(region);for (int i = region.getFirstRow(); i <= region.getLastRow(); i++) {HSSFRow row = sheet.getRow(i);if (row == null) {row = sheet.createRow(i);}HSSFCell cell = row.getCell(col);if (cell == null) {cell = row.createCell(col);}cell.setCellStyle(style);}}}/*** 设置单元格值和样式* @param cell* @param value* @param style*/private void setCellValueAndStyle(HSSFCell cell, String value, CellStyle style) {cell.setCellValue(value != null ? value : "");cell.setCellStyle(style);}

2.前端

//导出签到表数据function exportData() {//签到时间var selectedArriveTime = $("#time1").val();//上课地点var classRoom = document.getElementsByName('information');var selectedClassRoom = '';for (var i = 0; i < classRoom.length; i++) {if (classRoom[i].checked) {selectedClassRoom = classRoom[i].value;break;}}window.location.href = '${currentBaseUrl}/exportExcel?' + 'selectedArriveTime='+selectedArriveTime+'&selectedClassRoom='+selectedClassRoom;setTimeout(function() {$("#exportTipsInfoModule").hide();}, 3000);}