1.后端
java
/**
* 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
javascript
//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);
}