需求
接了需求，下载excel模版，本来看着还是简单的，然后实现起来一把泪，首先是使用poi，我查了好久，才实现，然后是我用easyexcel又实现了一遍，用了一个周多才实现。
这是需求，第一行是一个多行文本，红色，第二行一个合并单元格题目，第三行是一个多单元格标题，第四行是一个例子，红色。
实现
@Operation(summary = "人员维护模版下载", description = "人员维护模版下载")
@PostMapping("persondowntemplate")
public void personDownTemplate(HttpServletResponse response) {
ExcelWriter writer = ExcelUtil.getWriter(true);
//主标题
String note = "1.前四行数据，系统不读取，不需要删除\n" +
"2.约束区县，请输入约束的部门或者区县或者地市\n" +
"3.约束岗位族的值列表，请参考第二个Sheet2，多个岗位族，请使用英文逗号隔开\n" +
"4.日期格式：yyyy-mm-dd\n" +
"5.下拉数据的值，不允许输入下拉值以外的数据";
// 创建总标题行
List<String> totalHeader1 = Lists.newArrayList();
totalHeader1.add(note);
writer.writeHeadRow(totalHeader1); // 写入总标题行，使用默认样式
short headerRowHeight = 80 * 20; // 设置行高为30磅
Sheet sheet = writer.getSheet();
//因为是多行所以要自己控制行高
sheet.getRow(0).setHeight(headerRowHeight);
// 创建样式，建立每一行的样式
CellStyle cellStyle1 = createRedRightAlignedCellStyle(writer.getWorkbook());
Row row1 = sheet.getRow(0);
Cell cell = row1.getCell(0);
cell.setCellStyle(cellStyle1);
// 创建总标题行
List<String> totalHeader = Lists.newArrayList();
totalHeader.add("人员契约化管理导入");
writer.writeHeadRow(totalHeader); // 写入总标题行
// 创建样式
CellStyle cellStyle2 = createRedRightAlignedCellStyle2(writer.getWorkbook());
Row row2 = sheet.getRow(1);
Cell cell1 = row2.getCell(0);
cell1.setCellStyle(cellStyle2);
List<String> header = Lists.newArrayList();
header.add("组织名称");
header.add("* 员工编号");
header.add("加入本企业途径");
header.add("是否启用约束区县");
header.add("约束区县");
header.add("约束区县开始日期");
header.add("约束区县结束日期");
header.add("是否启用约束岗位族");
header.add("约束岗位族");
header.add("约束岗位族开始日期");
header.add("约束岗位族结束日期");
int mergeRowIndex = 0; // 总标题所在行索引
int mergeColumnStartIndex = 0; // 起始列索引
int mergeColumnEndIndex = header.size() - 1; // 结束列索引
//其实上面的这些索引没啥用，下面几行是合并某几行的单元格
CellRangeAddress cellRangeAddress = new CellRangeAddress(mergeRowIndex, mergeRowIndex, mergeColumnStartIndex, mergeColumnEndIndex);
sheet.addMergedRegion(cellRangeAddress);
CellRangeAddress cellRangeAddress1 = new CellRangeAddress(1, 1, mergeColumnStartIndex, mergeColumnEndIndex);
sheet.addMergedRegion(cellRangeAddress1);
writer.writeHeadRow(header); // 写入头部标题
//建立新的sheet
writer.renameSheet(0, "人员维护");
StyleSet styleSet = writer.getStyleSet();
//实话说这一块是直接抄的别的，你说有用处吧，可能也有，你说没用吧，可能也没有
for (int i = 0; i < 11; i++) {
CellStyle cellStyle = writer.createColumnStyle(i);
DataFormat format = writer.getWorkbook().createDataFormat();
cellStyle.setDataFormat(format.getFormat("@"));
writer.setStyleSet(styleSet);
}
//实话说这一块好像是也没生效
for (int i = 0; i < header.size(); i++) {
int headerLength = header.get(i).length(); // 获取列名长度
int cellWidth = headerLength * 500; // 将字符长度转换为列宽单位
// 如果内容比默认宽度要宽，则使用内容宽度；否则使用默认宽度
int defaultWidth = 24 * 256; // 默认宽度
int columnWidth = Math.max(cellWidth, defaultWidth);
sheet.setColumnWidth(i, columnWidth); // 设置列宽
}
//这是列表下面的示例行
List<Map<String, Object>> dataList = new ArrayList<>();
Map<String, Object> dataRow = new HashMap <>();
dataRow.put("组织名称", "请参考hr标准组织名称");
dataRow.put("* 员工编号", "0000001");
dataRow.put("加入本企业途径", "社会招聘");
dataRow.put("是否启用约束区县", "是");
dataRow.put("约束区县", "泰安市分公司管理层");
dataRow.put("约束区县开始日期", "2024-04-11");
dataRow.put("约束区县结束日期", "2024-06-11");
dataRow.put("是否启用约束岗位族", "是");
dataRow.put("约束岗位族", "基层组织建设与党员教育管理");
dataRow.put("约束岗位族开始日期", "2024-04-11");
dataRow.put("约束岗位族结束日期", "2024-06-11");
dataList.add(dataRow);
writer.write(dataList, false);
for (int i = 0; i < header.size(); i++) {
// 创建样式
CellStyle cellStyle4 = createRedRightAlignedCellStyle3(writer.getWorkbook());
Row row4 = sheet.getRow(3);
Cell cell4 = row4.getCell(i);
cell4.setCellStyle(cellStyle4);
// 创建样式
CellStyle cellStyle5 = createRedRightAlignedCellStyle5(writer.getWorkbook());
Row row5 = sheet.getRow(2);
Cell cell5 = row5.getCell(i);
cell5.setCellStyle(cellStyle5);
}
//这个是用来写下拉的，不同的下拉的，
setXSSFValidation(sheet);
// 创建样式
CellStyle cellStyle3 = createRedRightAlignedCellStyle2(writer.getWorkbook());
Row row3 = sheet.getRow(2);
Cell cell3 = row3.getCell(0);
cell3.setCellStyle(cellStyle3);
//创建新的sheet
writer.setSheet("Sheet2");
List<String> header1 = Lists.newArrayList();
header1.add("岗位族信息");
writer.writeHeadRow(header1);
List<Map<String,Object>> personnelContractManagementList = personnelContractManagementMapper.jobFamilyList();
List<String> personnelContractManagementSheet = new ArrayList<>();
for (int i = 0; i < personnelContractManagementList.size(); i++) {
personnelContractManagementSheet.add(String.valueOf(personnelContractManagementList.get(i).get("ZHUANYE")));
}
writer.write(personnelContractManagementSheet, true);
setSizeColumn(writer.getSheet());
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
response.setHeader("Content-Disposition", "attachment;filename=人员维护导入模板.xlsx");
ServletOutputStream out = null;
try {
out = response.getOutputStream();
writer.flush(out, true);
out.close();
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
writer.close();
}
}
private static CellStyle createRedRightAlignedCellStyle(Workbook workbook) {
CellStyle cellStyle = workbook.createCellStyle();
cellStyle.setWrapText(true);
Font font = workbook.createFont();
font.setColor(IndexedColors.RED.getIndex());
cellStyle.setFont(font);
cellStyle.setAlignment(HorizontalAlignment.LEFT);
return cellStyle;
}
private static CellStyle createRedRightAlignedCellStyle2(Workbook workbook) {
CellStyle cellStyle = workbook.createCellStyle();
cellStyle.setWrapText(true);
cellStyle.setAlignment(HorizontalAlignment.CENTER);
return cellStyle;
}
private static CellStyle createRedRightAlignedCellStyle3(Workbook workbook) {
CellStyle cellStyle = workbook.createCellStyle();
cellStyle.setWrapText(true);
Font font = workbook.createFont();
font.setColor(IndexedColors.RED.getIndex());
cellStyle.setFont(font);
cellStyle.setAlignment(HorizontalAlignment.CENTER);
return cellStyle;
}
private static CellStyle createRedRightAlignedCellStyle5(Workbook workbook) {
CellStyle cellStyle = workbook.createCellStyle();
cellStyle.setWrapText(true);
cellStyle.setAlignment(HorizontalAlignment.CENTER);
return cellStyle;
}
/**
*
* @param sheet
* @return
*/
private static Sheet setXSSFValidation(Sheet sheet){
String onelist[] = {"是","否"};
String joinEnterpriseWay[] = {"校园招聘","社会招聘","接收复转军人","成建制划转","劳务派遣"};
Workbook workbook = sheet.getWorkbook();
/**
* 创建一个名称为hidden的sheet页，用于是否启用约束区县
*/
Sheet hidden = workbook.createSheet("hidden");
Cell cell = null;
for (int i = 0, length = onelist.length; i < length; i++){
String name = onelist[i];
Row roww = hidden.createRow(i);
cell = roww.createCell(0);
cell.setCellValue(name);
}
Name namedCell = workbook.createName();
namedCell.setNameName("hidden");
namedCell.setRefersToFormula("hidden!$A$1:$A$" + onelist.length);
//将第二个sheet页设置为隐藏
workbook.setSheetHidden(1, true);
XSSFDataValidationHelper dvHelper = new XSSFDataValidationHelper((XSSFSheet) sheet);
//将名称为hidden的数据进行加载
XSSFDataValidationConstraint constraint = (XSSFDataValidationConstraint) dvHelper.createFormulaListConstraint("hidden");
//设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
CellRangeAddressList regions = new CellRangeAddressList(1, 1000, 3, 3);
XSSFDataValidation data_validation_list = (XSSFDataValidation) dvHelper.createValidation(constraint, regions);
data_validation_list.setErrorStyle(XSSFDataValidation.ErrorStyle.STOP);
data_validation_list.createErrorBox("提示", "不允许自己输入，请选择下拉框里的数据");
sheet.addValidationData(data_validation_list);
/**
* 创建一个名称为hidden的sheet页，用于是否启用约束区县
*/
Sheet hidden1 = workbook.createSheet("hidden1");
Cell cell1 = null;
for (int i = 0, length = onelist.length; i < length; i++){
String name1 = onelist[i];
Row row1 = hidden1.createRow(i);
cell1 = row1.createCell(0);
cell1.setCellValue(name1);
}
Name namedCell1 = workbook.createName();
namedCell1.setNameName("hidden1");
namedCell1.setRefersToFormula("hidden1!$A$1:$A$" + onelist.length);
//将第二个sheet页设置为隐藏
workbook.setSheetHidden(2, true);
//将名称为hidden的数据进行加载
XSSFDataValidationConstraint constraint1 = (XSSFDataValidationConstraint) dvHelper.createFormulaListConstraint("hidden1");
//设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
CellRangeAddressList regions1 = new CellRangeAddressList(1, 1000, 7, 7);
XSSFDataValidation data_validation_list1 = (XSSFDataValidation) dvHelper.createValidation(constraint1, regions1);
data_validation_list1.setErrorStyle(XSSFDataValidation.ErrorStyle.STOP);
data_validation_list1.createErrorBox("提示", "不允许自己输入，请选择下拉框里的数据");
sheet.addValidationData(data_validation_list1);
Sheet hidden2 = workbook.createSheet("hidden2");
Cell cell2 = null;
for (int i = 0; i < joinEnterpriseWay.length; i++) {
String name = joinEnterpriseWay[i];
Row row = hidden2.createRow(i);
cell2 = row.createCell(0);
cell2.setCellValue(name);
}
Name namedCell2 = workbook.createName();
namedCell2.setNameName("hidden2");
namedCell2.setRefersToFormula("hidden2!$A$1:$A$" + joinEnterpriseWay.length);
//将第二个sheet页设置为隐藏
workbook.setSheetHidden(3, true);
//将名称为hidden的数据进行加载
XSSFDataValidationConstraint constraint2 = (XSSFDataValidationConstraint) dvHelper.createFormulaListConstraint("hidden2");
//设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
CellRangeAddressList regions2 = new CellRangeAddressList(1, 1000, 2, 2);
XSSFDataValidation data_validation_list2 = (XSSFDataValidation) dvHelper.createValidation(constraint2, regions2);
data_validation_list2.setErrorStyle(XSSFDataValidation.ErrorStyle.STOP);
data_validation_list2.createErrorBox("提示", "不允许自己输入，请选择下拉框里的数据");
sheet.addValidationData(data_validation_list2);
return sheet;
}
