已收录的网站不好优化,白云区江夏附近做网站,域名信息查询系统,企业安全文化建设中的安全承诺是指前言 项目进行到新的一个迭代了#xff0c;赶了1周需求#xff0c;接口终于处理完了。分享记录下迭代中处理导入、导出、下载模版功能的细节吧。 一、场景 EasyExcel#xff08;阿里#xff09;实现Excel数据处理三层表头#xff0c;第二、三层表头动态数据根据第二、三层…前言 项目进行到新的一个迭代了赶了1周需求接口终于处理完了。分享记录下迭代中处理导入、导出、下载模版功能的细节吧。 一、场景 EasyExcel阿里实现Excel数据处理三层表头第二、三层表头动态数据根据第二、三层表头动态导出的模版动态数据区域下拉选择导入4的模版导入业务数据 模版效果 懂的都懂没有其他啥好说的直接上代码吧。 二、使用步骤 1.导出 controller导出方法 /*** 导出排班计划*/ResourceAction(id exportShiftPlan, name 导出排班计划)GetMapping(/exportShiftPlan)public void exportShiftPlan(PotAttendShiftPlanQueryRequestVo requestVo, HttpServletResponse response) {try {// 设置响应头response.setContentType(application/vnd.ms-excel);response.setCharacterEncoding(utf-8);String fileName URLEncoder.encode(DateUtil.format(DateUtil.date(), DatePattern.PURE_DATETIME_PATTERN) 排班计划导出 .xlsx, StandardCharsets.UTF_8).replaceAll(\\, %20);response.setHeader(Content-disposition, attachment;filename fileName);//组织导出数据MapString, Object exportDataMap service.exportShiftPlan(requestVo);ListListString headList (ListListString) exportDataMap.get(headList);ListListObject dataList (ListListObject) exportDataMap.get(dataList);ExcelWriterBuilder excelWriterBuilder EasyExcel.write(response.getOutputStream());excelWriterBuilder.head(headList).sheet(排班计划).doWrite(dataList);} catch (Exception e) {throw new RuntimeException(导出排班计划失败);}}exportShiftPlan方法实现 Overridepublic MapString, Object exportShiftPlan(PotAttendShiftPlanQueryRequestVo requestVo) {MapString, Object dataMap new HashMap();//处理动态列头ListListString headList new ArrayList();//前3列姓名、部门、员工账号ListString xmHeard new ArrayList();xmHeard.add(姓名);headList.add(xmHeard);ListString bmHeard new ArrayList();bmHeard.add(部门);headList.add(bmHeard);ListString yghHeard new ArrayList();yghHeard.add(员工账号);headList.add(yghHeard);//时间处理Date startTime requestVo.getStartTime();Date endTime requestVo.getEndTime();ListDateTime rangeDateList DateUtil.rangeToList(startTime, endTime, DateField.DAY_OF_MONTH);for (DateTime dateTime : rangeDateList) {ListString dateHead new ArrayList();//日期dateHead.add(DateUtil.format(dateTime, DatePattern.NORM_DATE_PATTERN));//星期int dayOfWeek DateUtil.dayOfWeek(dateTime);String weekName AttendConstant.weekDict.get(String.valueOf(dayOfWeek)).toString();dateHead.add(weekName);headList.add(dateHead);}//列头dataMap.put(headList, headList);//do your code循环处理组织一行数据放到list再放到map//动态列部分数据根据列头时间循环处理 dataMap.put(dataList, dataList);return dataMap;}2.下载模版 controller方法 /*** 下载排班计划导入模版** param response 响应*/ResourceAction(id exportShiftPlanTemplate, name 导出排班计划模版)GetMapping(/exportShiftPlanTemplate)public void exportShiftPlanTemplate(PotAttendShiftPlanQueryRequestVo requestVo, HttpServletResponse response) {try {// 设置响应头response.setContentType(application/vnd.ms-excel);response.setCharacterEncoding(utf-8);String fileName BusinessSerialNoUtil.genDateFmtSeqCode(redisService, , , 4, CommonConstant.SHIFT_EXPORT_TEMPLATE, 0, CommonConstant.COMPLET_BEFORE, DatePattern.PURE_DATE_PATTERN) 排班计划模版.xlsx;//防止乱码fileName URLEncoder.encode(fileName, StandardCharsets.UTF_8);response.setHeader(Content-disposition, attachment;filename fileName);//组织导出数据MapString, Object exportDataMap service.exportShiftPlanTemplate(requestVo);ListListString headList (ListListString) exportDataMap.get(headList);ListListObject dataList (ListListObject) exportDataMap.get(dataList);ListPotAttendShiftDTO shiftList (ListPotAttendShiftDTO) exportDataMap.get(shiftList);ExcelWriterBuilder excelWriterBuilder EasyExcel.write(response.getOutputStream());//动态设置下拉框excelWriterBuilder.registerWriteHandler(new CustomCellWriteHeightStrategy((short) 30, (short) 30));excelWriterBuilder.registerWriteHandler(new ShiftSheetWriteHandler(shiftList, headList.size(), dataList.size()));ExcelWriterSheetBuilder excelWriterSheetBuilder excelWriterBuilder.head(headList).sheet(排班计划);excelWriterSheetBuilder.doWrite(dataList);} catch (Exception e) {String errMsg e.getMessage();if (StringUtils.isBlank(errMsg)) {errMsg 导出导入模版失败;}throw new RuntimeException(errMsg);}}实际上就是在导出的基础上增加了一个样式核心拦截、一个数据处理的handler CustomCellWriteHeightStrategy         自定义单元格高度策略 /*** 自定义单元格高度策略* author zwmac*/ public class CustomCellWriteHeightStrategy extends AbstractRowHeightStyleStrategy {/*** 默认高度*/private static final Integer DEFAULT_HEIGHT 30;/*** 头部行高*/private Short headRowHeight DEFAULT_HEIGHT.shortValue();/*** 内容行高*/private Short contentRowHeight DEFAULT_HEIGHT.shortValue();public CustomCellWriteHeightStrategy(Short headRowHeight, Short contentRowHeight) {this.headRowHeight headRowHeight;this.contentRowHeight contentRowHeight;}Overrideprotected void setHeadColumnHeight(Row row, int relativeRowIndex) {int maxHeight autoCalMaxHeight(row);//row.setHeight((short) (maxHeight * DEFAULT_HEIGHT));row.setHeightInPoints(maxHeight * DEFAULT_HEIGHT);}Overrideprotected void setContentColumnHeight(Row row, int relativeRowIndex) {int maxHeight autoCalMaxHeight(row);//row.setHeight((short) (maxHeight * DEFAULT_HEIGHT));row.setHeightInPoints(maxHeight * DEFAULT_HEIGHT);}private int autoCalMaxHeight(Row row) {IteratorCell cellIterator row.cellIterator();if (!cellIterator.hasNext()) {return 1;}// 默认为 1行高度int maxHeight 1;while (cellIterator.hasNext()) {Cell cell cellIterator.next();switch (cell.getCellType()) {case STRING:if (cell.getStringCellValue().contains(\n)) {int length cell.getStringCellValue().split(\n).length;maxHeight Math.max(maxHeight, length);}break;default:break;}}return maxHeight;} }ShiftSheetWriteHandler         下拉框处理这里用的是隐藏域方式之前其实分享过另一种处理方式也提到了这种方式下拉框处理 /*** 排班sheetHandler** author zwmac*/ public class ShiftSheetWriteHandler implements SheetWriteHandler {/*** 一行的列数*/private Integer rowCelNum 0;/*** 行数*/private Integer rowNum 0;/*** 班次数据*/private ListPotAttendShiftDTO shiftList;/*public ShiftSheetWriteHandler(ListPotAttendShiftDTO shiftList, int rowCelNum) {this.shiftList shiftList;this.rowCelNum rowCelNum;}Overridepublic void beforeSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {}Overridepublic void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {//班次转mapMapString, String[] mapDropDown new HashMap();String[] shiftTimeArr new String[shiftList.size()];for (int i 0; i shiftList.size(); i) {PotAttendShiftDTO shift shiftList.get(i);String shiftName shift.getShiftName();ListPotAttendShiftTime shiftTimeList shift.getAttendShiftTimeList();StringBuffer sbf new StringBuffer();if (CollectionUtil.isNotEmpty(shiftTimeList)) {for (int j 0; j shiftTimeList.size(); j) {PotAttendShiftTime shiftTime shiftTimeList.get(j);String time DateUtil.format(shiftTime.getStartTime(), HH:mm) - DateUtil.format(shiftTime.getEndTime(),HH:mm);sbf.append(time);if (j ! shiftTimeList.size() - 1) {sbf.append(跳);}}}//长度估计是长了报异常//shiftTimeArr[i] shiftName sbf;shiftTimeArr[i] shiftName;}mapDropDown.put(1, shiftTimeArr);//获取工作簿Sheet sheet writeSheetHolder.getSheet();///开始设置下拉框DataValidationHelper helper sheet.getDataValidationHelper();//设置下拉框for (Map.EntryString, String[] entry : mapDropDown.entrySet()) {*//*起始行、终止行、起始列、终止列 起始行为1即表示表头不设置**//*//这里设置65535可能又问题因为这个是excel的最大行数如果数据量超过这个数就会报错CellRangeAddressList addressList new CellRangeAddressList(2, 65535, 3, rowCelNum - 1);*//*设置下拉框数据**//*DataValidationConstraint constraint helper.createExplicitListConstraint(entry.getValue());DataValidation dataValidation helper.createValidation(constraint, addressList);//阻止输入非下拉选项的值dataValidation.setErrorStyle(DataValidation.ErrorStyle.STOP);dataValidation.setShowErrorBox(true);dataValidation.setSuppressDropDownArrow(true);dataValidation.createErrorBox(提示, 输入值与单元格定义格式不一致);dataValidation.createPromptBox(填写说明, 填写内容只能为下拉数据集中的类型);sheet.addValidationData(dataValidation);}}*/private MapInteger, ListString selectMap;private int index;private char[] alphabet new char[]{A, B, C, D, E, F, G, H, I, J, K, L,M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z};public ShiftSheetWriteHandler(ListPotAttendShiftDTO shiftList, int rowCelNum,Integer rowNum) {//转mapMapInteger, ListString shiftMp transShiftListToMap(shiftList);this.selectMap shiftMp;this.index 0;this.rowCelNum rowCelNum;this.rowNum rowNum;}private MapInteger, ListString transShiftListToMap(ListPotAttendShiftDTO shiftList) {MapInteger, ListString mapDropDown new HashMap();ListString shiftTimeArr new ArrayList();for (int i 0; i shiftList.size(); i) {PotAttendShiftDTO shift shiftList.get(i);String shiftName shift.getShiftName();ListPotAttendShiftTime shiftTimeList shift.getAttendShiftTimeList();StringBuffer sbf new StringBuffer();if (CollectionUtil.isNotEmpty(shiftTimeList)) {for (int j 0; j shiftTimeList.size(); j) {PotAttendShiftTime shiftTime shiftTimeList.get(j);String time DateUtil.format(shiftTime.getStartTime(), HH:mm) - DateUtil.format(shiftTime.getEndTime(), HH:mm);sbf.append(time);if (j ! shiftTimeList.size() - 1) {sbf.append(跳);}}}String fullName DictTranslateor.translate(AttendConstant.SHIFT_NAME_DICT, shiftName);shiftTimeArr.add(fullName sbf);}mapDropDown.put(1, shiftTimeArr);return mapDropDown;}Overridepublic void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {if (selectMap null || selectMap.size() 0) {return;}// 需要设置下拉框的sheet页Sheet curSheet writeSheetHolder.getSheet();DataValidationHelper helper curSheet.getDataValidationHelper();String dictSheetName 字典sheet;Workbook workbook writeWorkbookHolder.getWorkbook();// 数据字典的sheet页Sheet dictSheet workbook.createSheet(dictSheetName);// 从第二个工作簿开始隐藏为了用户的友好性将字典sheet隐藏掉this.index;// 设置隐藏workbook.setSheetHidden(this.index, true);for (Map.EntryInteger, ListString entry : selectMap.entrySet()) {// 设置下拉单元格的首行、末行、首列、末列CellRangeAddressList rangeAddressList new CellRangeAddressList(3, 3 rowNum - 1, 3, rowCelNum - 1);int rowLen entry.getValue().size();// 设置字典sheet页的值 每一列一个字典项for (int i 0; i rowLen; i) {Row row dictSheet.getRow(i);if (row null) {row dictSheet.createRow(i);}row.createCell(entry.getKey()).setCellValue(entry.getValue().get(i));}String excelColumn getExcelColumn(entry.getKey());// 下拉框数据来源 eg:字典sheet!$B1:$B2String refers dictSheetName !$ excelColumn $1:$ excelColumn $ rowLen;// 创建可被其他单元格引用的名称Name name workbook.createName();// 设置名称的名字name.setNameName(dict entry.getKey());// 设置公式name.setRefersToFormula(refers);// 设置引用约束DataValidationConstraint constraint helper.createFormulaListConstraint(dict entry.getKey());// 设置约束DataValidation validation helper.createValidation(constraint, rangeAddressList);if (validation instanceof HSSFDataValidation) {validation.setSuppressDropDownArrow(false);} else {validation.setSuppressDropDownArrow(true);validation.setShowErrorBox(true);}// 阻止输入非下拉框的值validation.setErrorStyle(DataValidation.ErrorStyle.STOP);validation.createErrorBox(提示, 此值与单元格定义格式不一致);validation.setShowErrorBox(true);validation.setSuppressDropDownArrow(true);validation.createPromptBox(填写说明, 填写内容只能为下拉数据集中的类型);// 添加下拉框约束writeSheetHolder.getSheet().addValidationData(validation);}}/*** 将数字列转化成为字母列** param num* return*/private String getExcelColumn(int num) {String column ;int len alphabet.length - 1;int first num / len;int second num % len;if (num len) {column alphabet[num] ;} else {column alphabet[first - 1] ;if (second 0) {column column alphabet[len] ;} else {column column alphabet[second - 1] ;}}return column;} }service实现部分就不贴了跟导出的思路一致多了一个下拉框数据shiftList而已。 3、导入 controller方法 /*** 导入排班计划2** param file 文件*/OperateLog(moduleName moduleName, operateContent 导入排班计划)RequestMapping(value /importShiftPlan/{parkId}, method RequestMethod.POST)public RestResponse importShiftPlan2(RequestParam(file) MultipartFile file, PathVariable(parkId) Long parkId) {try {service.importShiftPlan(file, parkId);return RestResponse.success();} catch (Exception e) {log.error(导入排班计划失败, e);throw new RuntimeException(导入排班计划失败);}}importShiftPlan方法实现 Overridepublic void importShiftPlan(MultipartFile file, Long parkId) throws IOException {//参数校验Assert.notNull(file, 文件为空);Assert.notNull(parkId, 园区id为空);//解析文件//EasyExcel.read(file.getInputStream(), AttendShiftPlanExcelDto.class, new AttendShiftPlanListener()).sheet(0).doRead();//ListMapInteger,Object list EasyExcel.read(file.getInputStream(), AttendShiftPlanExcelDto.class, new AttendShiftPlanListener()).sheet(0).doReadSync();//headRowNumber设置表示设置的行与之前的行都是列头监听里的数据处理就从这个行之后开始读AttendShiftPlanListener attendShiftPlanListener new AttendShiftPlanListener();ListMapInteger, Object list EasyExcel.read(file.getInputStream(), attendShiftPlanListener).sheet(0).headRowNumber(3).doReadSync();ListString headList attendShiftPlanListener.getHeaders();Assert.notEmpty(list, 导入数据为空);Assert.notEmpty(headList, 表头信息为空);//do your code//有表头了有数据了剩下的就是大家表演了}AttendShiftPlanListener         监听处理数据其实保存数据可以在监听里就处理了。 /*** 排班计划导入监听器** author zwmac*/ Slf4j public class AttendShiftPlanListener extends AnalysisEventListenerMapInteger, String {private static final int BATCH_COUNT 5;private ListAttendShiftPlanExcelDto cachedDataList ListUtils.newArrayListWithExpectedSize(BATCH_COUNT);Getterprivate ListString headers new ArrayList();// 存储自定义表头MapInteger, String customHeaders new HashMap();Overridepublic void onException(Exception exception, AnalysisContext context) throws Exception {super.onException(exception, context);}Overridepublic void invokeHead(MapInteger, ReadCellData? headMap, AnalysisContext context) {//列头处理Integer rowIndex context.readRowHolder().getRowIndex();if(rowIndex 1) {for (int i 3; i headMap.size(); i) {String header headMap.get(i).getStringValue();if (!null.equals(header) !isFixedHeader(header)) {customHeaders.put(i, header);}}MapInteger, String hdMap ConverterUtils.convertToStringMap(headMap, context);for (int i 0; i hdMap.size(); i) {headers.add(hdMap.get(i));}}}/*** 判断是否是固定表头*/private boolean isFixedHeader(String header) {//定义固定表头集合ListString list Arrays.asList(姓名, 部门, 账号);return list.contains(header);}Overridepublic void invoke(MapInteger, String data, AnalysisContext context) {//数据处理AttendShiftPlanExcelDto shiftPlanExcelDto new AttendShiftPlanExcelDto();StringBuilder sb new StringBuilder();shiftPlanExcelDto.setUserName(data.get(0));shiftPlanExcelDto.setOrgName(data.get(1));shiftPlanExcelDto.setUserAccount(data.get(2));JSONObject jsonObject new JSONObject();for (int i 0; i data.size() - 1; i) {jsonObject.put(customHeaders.get(i), data.get(i));}shiftPlanExcelDto.setShiftPlanDataJson(jsonObject.toJSONString());cachedDataList.add(shiftPlanExcelDto);if (cachedDataList.size() BATCH_COUNT) {//saveData();其实这里就可以直接处理保存cachedDataList.clear();} else {log.info(解析到一条数据:{}, data);}}Overridepublic void doAfterAllAnalysed(AnalysisContext context) {} }AttendShiftPlanExcelDto import com.alibaba.excel.annotation.ExcelIgnore; import com.alibaba.excel.annotation.ExcelProperty; import lombok.Data;/*** author zwmac*/ Data public class AttendShiftPlanExcelDto {ExcelProperty(value 姓名, index 0)private String userName;ExcelProperty(value 部门, index 1)private String orgName;ExcelProperty(value 账号, index 2)private String userAccount;/*** 动态数据列*/ExcelIgnoreprivate String shiftPlanDataJson; }前3列是固定的后面是动态当成一个字段实际是json串 总结 EasyExcel阿里系的还是挺强目前我们的微服务也是阿里系的其实我个人不太喜欢阿里系的微服务导出可以使用模版这里横向、纵向都是动态感觉太麻烦还不如编码其实主要一点还是要自己有大致的思路自己要敢想         还是那句话思路很重要就分享到这里希望能帮到大家uping