java操作poi生成excel.xlsx(设置下拉框)下载本地和前端下载

需求:导入excel表格,如果excel有错误,将错误的地方标红,在把数据以excel的形式写出,供用户下载
解决方案:1.以实体类的方式接收excel并解析(创建两个集合一个接收正常的数据一个接收错误的数据)
2.错误集合无论正确错误数据都要存储,并记录是否有误(错误数据拼接特殊字符作为标记,然后记录写入集合)
3.如果发现记录有错误记录,就要使用错误数据集合生成excel(对错误的数据对特殊字符截取)
4.将错误的excel生成到工程的相对的路径下,也可以上传服务器更好(下次下载前要记得清理记录),返回前端一个地址,前端点击链接进行下载
5.下面是片段代码

  public static SXSSFWorkbook createExportInterviewExcel(List<Operator> data, String sheetName) {
SXSSFWorkbook sxssfWorkbook = new SXSSFWorkbook(100);
//标题栏设置
CellStyle style = sxssfWorkbook.createCellStyle();
style.setWrapText(true);//自动换行
style.setVerticalAlignment(CellStyle.VERTICAL_CENTER);//垂直居中
style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 居左
Font font = sxssfWorkbook.createFont();
font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD); //字体增粗
style.setFont(font);
DataFormat formats = sxssfWorkbook.createDataFormat();
style.setDataFormat(formats.getFormat("@"));//设置文本格式 //正常格式设置
CellStyle cellStyle = sxssfWorkbook.createCellStyle();
//cellStyle.setWrapText(true);//自动换行
cellStyle.setVerticalAlignment(CellStyle.VERTICAL_CENTER);//垂直居中
cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 居左
DataFormat format = sxssfWorkbook.createDataFormat();
cellStyle.setDataFormat(format.getFormat("@"));//设置文本格式 Sheet taskInfoSheet = sxssfWorkbook.createSheet(sheetName);
DataValidationHelper helper = taskInfoSheet.getDataValidationHelper();//设置下拉框xlsx格式
//设置列宽
taskInfoSheet.setColumnWidth(5, 256 * 21);
taskInfoSheet.setColumnWidth(6, 256 * 15);
taskInfoSheet.setColumnWidth(7, 256 * 15);
taskInfoSheet.setColumnWidth(8, 256 * 20);
taskInfoSheet.setColumnWidth(18, 256 * 20);
// 第一行标题
Row row_tital = taskInfoSheet.createRow(0); String[] keyWord = {"姓名","性别","民族", "年龄", "学历", "身份证号", "手机号",
"在我司任职过", "岗位名", "广告名", "部门","工作地", "推荐人","推荐人电话","推荐人部门","推荐人工号", "面试安排时间","是否录用", "淘汰类型", "淘汰原因"};
for (int i = 0; i < keyWord.length; i++) {
Cell cell_tital_index = row_tital.createCell(i);
cell_tital_index.setCellValue(keyWord[i]);
cell_tital_index.setCellStyle(style);
} //异常情况处理
if (CollectionUtils.isEmpty(data) ||(CollectionUtils.isNotEmpty(data) && StringUtils.isBlank(data.get(0).getName()))) {
return sxssfWorkbook;
} // 数据行
for (int i = 0; i < data.size(); i++) { // 导出详情
Row row_data = taskInfoSheet.createRow(i + 1);
Cell cell_data_name = row_data.createCell(0);
cell_data_name.setCellValue(data.get(i).getName());
cell_data_name.setCellStyle(cellStyle); Cell cell_data_nation = row_data.createCell(1);
cell_data_nation.setCellValue(data.get(i).getNational());
cell_data_nation.setCellStyle(cellStyle); Cell cell_data_age = row_data.createCell(2); Integer age= null;
if(data.get(i).getAge()!= null){
age = data.get(i).getAge();
}else{
age=1;
}
cell_data_age.setCellValue(age);
cell_data_age.setCellStyle(cellStyle); //添加工作地
Cell cell_data_location =row_data.createCell(3);
cell_data_location.setCellValue(data.get(i).getLocation());
cell_data_location.setCellStyle(cellStyle); Cell cell_data_referrer = row_data.createCell(4);
cell_data_referrer.setCellValue(data.get(i).getReferrer());
cell_data_referrer.setCellStyle(cellStyle); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
String interviewTime = "";
if (null != data.get(i).getInterviewTime()) {
interviewTime = sdf.format(data.get(i).getInterviewTime());
}
Cell cell_data_interviewTime = row_data.createCell(5);
cell_data_interviewTime.setCellValue(interviewTime);
cell_data_interviewTime.setCellStyle(cellStyle); String[] yesOrNo = {"是", "否"};
creatDropDownList(taskInfoSheet,helper,yesOrNo,1,200,6,6); String[] list = {"不符合返聘要求", "不符合公司规则", "综合素质", "其他"};
creatDropDownList(taskInfoSheet, helper, list, 1, 200, 7, 7);
} return sxssfWorkbook;
} //创建下拉框
private static void creatDropDownList(Sheet taskInfoSheet, DataValidationHelper helper, String[] list,
Integer firstRow, Integer lastRow, Integer firstCol, Integer lastCol) {
CellRangeAddressList addressList = new CellRangeAddressList(firstRow, lastRow, firstCol, lastCol);
//设置下拉框数据
DataValidationConstraint constraint = helper.createExplicitListConstraint(list);
DataValidation dataValidation = helper.createValidation(constraint, addressList);
//处理Excel兼容性问题
if (dataValidation instanceof XSSFDataValidation) {
dataValidation.setSuppressDropDownArrow(true);
dataValidation.setShowErrorBox(true);
} else {
dataValidation.setSuppressDropDownArrow(false);
}
taskInfoSheet.addValidationData(dataValidation);
} //需求:导入excel表格,如果excel有错误,将错误的地方标红,在把数据以excel的形式写出,供用户下载
//解决方案:1.以实体类的方式接收excel并解析(创建两个集合一个接收正常的数据一个接收错误的数据)
//2.错误集合无论正确错误数据都要存储,并记录是否有误(错误数据拼接特殊字符作为标记,然后记录写入集合)
//3.如果发现记录有错误记录,就要使用错误数据集合生成excel(对错误的数据对特殊字符截取)
//4.将错误的excel生成到工程的相对的路径下(下次下载前要记得清理记录),返回前端一个地址,前端点击链接进行下载 //这个方法就是清除之前的文件夹
private String getExportResult(SXSSFWorkbook sxssfWorkbook) { //删除之前文件夹下的文件
String targetUrl = System.getProperty("export.error.result");
File targetFile = new File(targetUrl);
ContentUtil.deletAllFiles(targetFile); String fileName = null;
try {
fileName = System.getProperty("export.error.result") + UUID.randomUUID().toString() + ".xlsx";
File file = new File(fileName);
if (!file.exists()) {
file.getParentFile().mkdirs();
}
FileOutputStream outputStream = new FileOutputStream(fileName);
sxssfWorkbook.write(outputStream);
outputStream.close();
} catch (IOException e) {
logger.error("OperatorInfoImportAuditResultServiceImpl下载导入错误excel表格异常", e);
e.printStackTrace();
}
return fileName;
}
public static void deletAllFiles(File file) {
if (file == null) {
return;
}
if (file.exists()) {
if (file.isFile()) {
file.delete();
}else if (file.isDirectory()) {
File[] listFiles = file.listFiles();
if (listFiles == null) {
return;
}
for (File file2 : listFiles) {
deletAllFiles(file2);
}
/* //递归跳出来的时候删除空文件夹
file.delete();*/
}
}
} @RequestMapping(value = "/exportErrorImportResult", method = RequestMethod.GET)
public void exportErrorImportResult(@RequestParam(value = "paramUrl") String paramUrl, HttpServletResponse response, HttpServletRequest request) { //生成错误的文档
try {
XSSFWorkbook workbook = null;
File file = new File(paramUrl);
if (file.exists()) {
FileInputStream in = new FileInputStream(file);
workbook = new XSSFWorkbook(in);
} else {
logger.info("初级员工内推导出错误的excel文件,文件不存在");
}
OutputStream ouputStream = response.getOutputStream();
String fileName = "导出错误";
fileName = URLEncoder.encode(fileName, "UTF-8");
response.reset();
response.setContentType("application/vnd.ms-excel");
response.setHeader("Content-Disposition", "attachment;filename=" + fileName + ".xlsx");
workbook.write(ouputStream);
ouputStream.flush();
ouputStream.close(); } catch (Exception e) {
logger.error("导出错误的excel文件,OperatorPostInfoController 异常:", e);
}
}
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