一、POI动态字段导出Excel-导入Excel

1.直接导出Excel

 public static void main(String[] args) throws IOException {
//        String filePath = "E:\\测试POI生成文件\\测试POI生成文件01.xls";
//        HSSFWorkbook workbook = new HSSFWorkbook();
//        HSSFSheet sheet = workbook.createSheet();
//        sheet = workbook.createSheet("测试POI生成文件01");
//        FileOutputStream out = new FileOutputStream(filePath);
//        workbook.write(out);
//        out.close();// 升级到 POI 3.5
//        TestController.test01();
//        TestController.test02();oString jsonString = "{\n" +"        \"title\":\"查询表格\",\n" +"        \"columns\":[\n" +"            [\n" +"                {\n" +"                    \"title\":\"序号\",\n" +"                    \"field\":\"SEQ\"\n" +"                },\n" +"                {\n" +"                    \"title\":\"当前状态\",\n" +"                    \"field\":\"CURRENT_STATUS\"\n" +"                }\n" +"            ]\n" +"        ]\n" +"    }";Map<String, Object> headerMap = JSON.parseObject(jsonString);List<Map<String, Object>> list = new ArrayList<>();for (int i = 1; i < 65534; i++) {Map<String, Object> map = new HashMap<>();map.put("SEQ", "seq" + i);map.put("CURRENT_STATUS", "CURRENT_STATUS" + i);list.add(map);}HSSFWorkbook workbook = TestController.test03(headerMap, list);FileOutputStream os = new FileOutputStream("E:\\\\测试POI生成文件\\测试poi生成文件03.xls");workbook.write(os);}

2.响应式导出Excel

/**** @param head 列表标题行，例：{"head": {"title": "接口异常统计数据","columns": [[{"title": "接口名称","field": "requestUrl"}, {"title": "接口类型","field": "interfaceType"}]]}}* @param param  查询列表数据参数 {"code":"c_test_select","initSql":"AA==","init":[],"query":[{"name":"XM","value":"","type":"2"}]}* @param request* @param response* @return* @throws Exception*/
@ApiOperation("2.导出列表数据")
@GetMapping(value = "exportQueryData")
public void exportQueryExcel(@RequestParam(value = "head") String head,@RequestParam(value = "param" ) String param,@RequestParam(value = "pager.pageNo" , defaultValue = "1") String pageNo,@RequestParam(value = "pager.pageSize" , defaultValue = "0") String pageSize,@RequestParam(value = "sort" , defaultValue = "") String sort,@RequestParam(value = "direction" , defaultValue = "") String direction,HttpServletRequest request,HttpServletResponse response) throws Exception{queryService.exportQueryExcel(head, param, pageNo, pageSize, sort, direction, request, response);/**** @param head 列表标题行，例：{"head": {"title": "接口异常统计数据","columns": [[{"title": "接口名称","field": "requestUrl"}, {"title": "接口类型","field": "interfaceType"}]]}}* @param param  查询列表数据参数 {"code":"c_test_select","initSql":"AA==","init":[],"query":[{"name":"XM","value":"","type":"2"}]}* @param request* @param response* @return* @throws Exception*/
void exportQueryExcel(String head, String param, String pageNo, String pageSize, String sort, String direction, HttpServletRequest request, HttpServletResponse response) throws Exception;@Overridepublic void exportQueryExcel(String head, String param, String pageNo, String pageSize, String sort, String direction, HttpServletRequest request, HttpServletResponse response) throws Exception {log.info("-------------------------------开始导出数据------------------------------------------------------");String deStringParam = ""; // 解密后 paramString deStringHead = ""; // 解密后 headtry {// 解密（前端加密2次，）deStringParam = URLDecoder.decode(param, "UTF-8");log.info("解密后param：" + deStringParam);deStringHead = URLDecoder.decode(head, "UTF-8");log.info("解密后head：" + deStringHead);}catch (Exception e){log.error("解密数据异常");e.printStackTrace();}Map<String, Object> paramMap = JSON.parseObject(deStringParam, Map.class);Map<String, Object> headMap = new HashMap<>();List outTitleAndColumnsList = new ArrayList<>();List<Map<String, String>> inTitleAndColumnsList = new ArrayList<>();String fileTitle = "";if (paramMap!= null){// 获取列表的查询标识String queryCode = (String)paramMap.get("code");Query query = queryDao.get(queryCode);// 导出文件的标题fileTitle = query.getQueryName();String[] codes = new String[]{queryCode};List<Field> fList = queryDao.getField(codes);// 获取到导出文件的表头for (Field field : fList) {
//                List fieldList = new ArrayList();String[] inSort = deStringHead.split(",");for (String inS : inSort) {String fieSort = String.valueOf(field.getSort().toString());if (fieSort.equals(inS)){Map<String, String> fieldMap = new HashMap<>();String tittle = field.getTittle();String fieldName = field.getFieldName();fieldMap.put("title", tittle);fieldMap.put("field", fieldName);inTitleAndColumnsList.add(fieldMap);}}}}
//        List nullList = new ArrayList<>();
//        nullList.add(inTitleAndColumnsList);
//        outTitleAndColumnsList.add(nullList);outTitleAndColumnsList.add(inTitleAndColumnsList);Map map = new HashMap();map.put("title", fileTitle);map.put("columns", outTitleAndColumnsList);headMap.put("head",map);deStringHead = JSON.toJSONString(headMap);log.info("-----------------------------------" + deStringHead);//  获取需要导出的数据Map<String, String> inVo = new HashMap<>();inVo.put("param", deStringParam);inVo.put("pager.pageNo", pageNo);// 暂时限制最多导出 1w 条数据inVo.put("pager.pageSize", (StringUtils.isBlank(pageSize) || Integer.valueOf(pageSize) > 10000) ? "10000" : pageSize);inVo.put("sort", sort);inVo.put("direction", direction);log.info("导出：查询数据，请求地址为:{},请求参数为：{}", commonQueryLoadDataUrl, JSON.toJSONString(inVo));String result = HttpUtils.postString(queryDataUrl, inVo);log.info("请求返回结果为：{}", result);Map<String, Object> resultMap = JSON.parseObject(result, Map.class);if (null == resultMap || !resultMap.containsKey("rows") || CollectionUtils.isEmpty((List)resultMap.get("rows"))){throw new Exception("未查询到数据,请稍后再试！");}// 列表数据 集合(需要导出的数据)List rows = (List)resultMap.get("rows");List<Map<String, Object>> dataList = ExportUtils.formatList(rows);log.info("导出数据量为" + dataList.size());Map<String,Object> parameterMap = new HashMap<String, Object>();parameterMap.put("map",deStringParam);Map<String, Object> headerMap = ExportUtils.buildMap(deStringHead,"head");// 列表标题行// Excel的head 和 查询到的数据字段名会不一致，将导出的Excel的head名转换为数据字段名if (!CollectionUtils.isEmpty(dataList)){Map<String, Object> dataMap = dataList.get(0); // 数据的字段名 值List<Map<String,String>> columns = (List<Map<String,String>>)((List) headerMap.get("columns")).get(0); // 传入的需要导出的标题 字段名for (String key : dataMap.keySet()) {for (Map<String, String> columnsMap : columns){if (key.equalsIgnoreCase(columnsMap.get("field"))){columnsMap.put("field", key);}}}}//生成数据HSSFWorkbook workbook = ExportUtils.createExcel(headerMap, dataList);//输出Writer.exportExcel(response, workbook, ExportUtils.getTitle(headerMap));log.info("-------------------------------结束导出数据------------------------------------------------------");}

3.ExportUtils工具类

import com.alibaba.fastjson.JSON;
import net.sf.json.JSONObject;
import org.apache.commons.lang.StringUtils;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.hssf.util.Region;import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;public class ExportUtils {// 通用Excel导出public static HSSFWorkbook createExcel(Map<String, Object> headerMap,List<Map<String, Object>> dataList) {// 第三行开始写表头int headNum = 2;// 表头行数int headSize = 0;// 数据列数int columnLength = 0;int[][] place = null;String[] field = null;List<String> dataField = new ArrayList<String>();// 创建excel工作簿HSSFWorkbook workbook = new HSSFWorkbook();// 创建sheetHSSFSheet sheet = workbook.createSheet();// 单元格样式HSSFCellStyle style = workbook.createCellStyle(); // 样式对象style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直style.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 水平// 字体样式HSSFFont font = workbook.createFont();font.setFontHeightInPoints((short) 20);// 设置字体大小style.setFont(font);// 单元格样式HSSFCellStyle cellStyle = workbook.createCellStyle(); // 样式对象cellStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);// 垂直cellStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 水平HSSFRow row1 = sheet.createRow(0);row1.setHeight((short) 500);HSSFCell cell1 = row1.createCell((short) 0);//sheet.addMergedRegion(new Region(0, (short) 0, 1, (short) 10));cell1.setCellStyle(style);//-------------cell1.setEncoding(HSSFCell.ENCODING_UTF_16);// 写Excel文件名称cell1.setCellValue(headerMap.get("title").toString());// 获取表头数据List<Map<String, String>> headerList = (List<Map<String, String>>) headerMap.get("columns");headSize = headerList.size();// 通过第一列表头，获取导出Excel列数List<Map<String, String>> first = (List<Map<String, String>>) headerList.get(0);for (int i = 0; i < first.size(); i++) {Map<String, String> m = first.get(i);if (null != m.get("colspan")) {Object value = m.get("colspan");if (value instanceof Integer) {columnLength = columnLength + (Integer) value;}} else {columnLength = columnLength + 1;}}// 初始化表头位置标志，用于判断单元格是否合并place = new int[headSize][columnLength];field = new String[columnLength];System.out.println("  columnLength  " + columnLength);System.out.println("   headsize   " + headSize);// 在第三行开始创建表头HSSFRow row = sheet.createRow(headNum);// 设置每一列的宽度sheet.setDefaultColumnWidth((short) 15);sheet.addMergedRegion(new Region(0, (short) 0, 1, (short) (columnLength-1)));for (int i = 0; i < headerList.size(); i++) {if (headerList.get(i) instanceof List) {int k = 0, l = 0;// 获取当前行的表头设置List<Map<String, String>> header = (List<Map<String, String>>) headerList.get(i);for (; k < columnLength; k++) {HSSFCell cellCheck = null;HSSFCell cell = null;int rowspan = 0;int colspan = 0;// 合并单元格直接跳过，进入下一列if (place[headNum - 2][k] == 1) {continue;} else { // 否则创建单元格cell = row.createCell((short) k);}// 获取当前单元格定义Map<String, String> h = header.get(l);// 获取跨行if (null != h.get("rowspan")) {Object value = h.get("rowspan");if (value instanceof Integer) {rowspan = (Integer) value;}}// 获取跨列if (null != h.get("colspan")) {Object value = h.get("colspan");if (value instanceof Integer) {colspan = (Integer) value;}}if (rowspan != 0 && colspan != 0) { // 跨行跨列// 合并单元格sheet.addMergedRegion(new Region(headNum, (short) k,headNum + rowspan - 1,(short) (k + colspan - 1)));// 标记合并单元格for (int m = headNum; m < headNum + rowspan; m++) {for (int n = k; n < k + colspan; n++) {place[m - 2][n] = 1;}}k = k + colspan - 1;} else if (rowspan != 0) { // 只跨行// 合并单元格sheet.addMergedRegion(new Region(headNum, (short) k,headNum + rowspan - 1, (short) k));// 标记合并单元格for (int m = headNum; m < headNum + rowspan; m++) {place[m - 2][k] = 1;}} else if (colspan != 0) { // 只跨列// 合并单元格sheet.addMergedRegion(new Region(headNum, (short) k,headNum, (short) (k + colspan - 1)));// 标记合并单元格for (int n = k; n < k + colspan; n++) {place[headNum - 2][n] = 1;}// 标记下一个未写列k = k + colspan - 1;}// 下一个表头设置l++;// 标记字段值if (null != h.get("field")&& StringUtils.isNotBlank(h.get("field"))) {field[k] = h.get("field");dataField.add(h.get("field"));}// 设置单元格的样式cell.setCellStyle(cellStyle);cell.setCellType(HSSFCell.CELL_TYPE_STRING);//-------------cell.setEncoding(HSSFCell.ENCODING_UTF_16);// 在单元格写内容cell.setCellValue(h.get("title").toString());cell.getStringCellValue();}// 下一行headNum = headNum + 1;row = sheet.createRow(headNum);}}for (int i = 0; i < dataList.size(); i++) {// 表头的下一行开始填充数据HSSFRow row_value = sheet.createRow(headNum);Map dataMap = dataList.get(i);
//          System.out.println("------------------start数据"+ i + 1 +"------------------");
//          String string = JSON.toJSONString(dataMap);
//          System.out.println(string);
//          System.out.println("------------------end数据"+ i + 1 +"------------------");for (int n = 0; n < field.length; n++) {
//             if (dataMap.get("CUST_CER_ID").equals("2134の1") && n == 9){
//                System.out.println(1111);
//                Object cust_cer_id = dataMap.get("CUST_CER_ID");
//                System.out.println(cust_cer_id);
//             }HSSFCell cell = row_value.createCell((short) n);cell.setCellType(HSSFCell.CELL_TYPE_STRING);//-------------cell.setEncoding(HSSFCell.ENCODING_UTF_16);
//             cell.setCellValue(dataMap.get(field[n]) == null ? ""
//                   : dataMap.get(field[n]).toString());if(dataMap.get(field[n]) == null || dataMap.get(field[n]).toString() == ""){cell.setCellValue("");}else{Boolean strResult = dataMap.get(field[n]).toString().matches("-[0-9]+(.[0-9]+)?|[0-9]+(.[0-9]+)?");Pattern p = Pattern.compile("[a-zA-z]");/**判断是否含有英文单词*/Boolean flag = p.matcher(dataMap.get(field[n]).toString()).find();/**dataMap.get(field[n]).toString().indexOf("-")>0判断主要是区分字符串2017-10和数字-10*/
//                if (!strResult||dataMap.get(field[n]).toString().indexOf("-")>0||flag){
//                   cell.setCellValue(dataMap.get(field[n]).toString());
//                }else{
//                   if(dataMap.get(field[n]).toString().length()>11){
//                      //韶关现场 事项编码数字过长,导出时转换为String类型
//                      cell.setCellValue(dataMap.get(field[n]).toString());
//                   }else{
//                      // 存在特殊符号的时候转换成 Double类型会出错
//                      cell.setCellValue(Double.parseDouble(dataMap.get(field[n]).toString()));
//                   }
//                }cell.setCellValue(dataMap.get(field[n]).toString());}}headNum = headNum + 1;}return workbook;}/*** 根据前台参数 整理出表头数据* @param parameterMap* @return*/public static Map<String, Object> buildMap(Map parameterMap, String key){JSONObject json = JSONObject.fromObject(parameterMap.get("map"));Map<String, Object> param = json;if (key!=null) {Map<String, Object> keyMap = (Map<String, Object>) param.get(key);return keyMap;}// 获取表头数据return param;}/*** 根据前台参数 整理出表头数据* @param parameterMap json串* @param key head* @return*/public static Map<String, Object> buildMap(String parameterMap, String key){Map<String, Object> param = JSON.parseObject(parameterMap, Map.class);
//    Map<String, Object> param = json;if (key!=null) {Map<String, Object> keyMap = (Map<String, Object>) param.get(key);return keyMap;}// 获取表头数据return param;}public static Map<String, Object> buildHeadMap(Map parameterMap){Map<String, Object> keyMap = (Map<String, Object>) parameterMap.get("head");return keyMap;}/*** 获取一个title* @param headerMap* @return*/public static String getTitle(Map<String, Object> headerMap){return headerMap.get("title") == null ? "未命名" : headerMap.get("title").toString();}/*** 根据 list<object> 生成  List<Map<String, Object>> 格式的数据* @param <T>* @param list* @return*/@SuppressWarnings("unchecked")public static <T> List<Map<String, Object>> formatList(List<T> list){List<Map<String, Object>> dataList = new ArrayList<Map<String, Object>>();for(Object temp:list){dataList.add(JSONObject.fromObject(temp));}return dataList;}/*** 传进表头数据和列表数据 直接导出excel* @param header* @param list* @param response*/public static<T> void exportWrite(String header, List<T> list, HttpServletResponse response){Map<String, Object> parameterMap = new HashMap<String, Object>();parameterMap.put("map", header);List<Map<String, Object>> dataList = formatList(list);//根据head生成表头数据Map<String, Object> headerMap = buildMap(parameterMap,"head");//生成数据HSSFWorkbook workbook = createExcel(headerMap,dataList);//输出Writer.exportExcel(response, workbook, getTitle(headerMap));}
}

4.Writer工具类

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;/*** 文件名称：Writer.java***/
public class Writer {/*** 输出不分页列表到前台* @param response* @param list*/public static void outPutList(HttpServletResponse response, List list){try {response.setContentType("text/html;charset=GBK");PrintWriter out = response.getWriter();out.print(JSONArray.fromObject(list));out.flush();out.close();} catch (IOException e) {e.printStackTrace();}}/*** 输出普通对象到前台* @param response* @param list*/public static void outPutObject(HttpServletResponse response, Object object){try {response.setContentType("text/html;charset=GBK");PrintWriter out = response.getWriter();out.print(JSONObject.fromObject(object));out.flush();out.close();} catch (IOException e) {e.printStackTrace();}}/*** 输出字符串到前台* @param response* @param list*/public static void outPutStr(HttpServletResponse response, String jsonStr){try {response.setContentType("text/html;charset=GBK");PrintWriter out = response.getWriter();out.print(jsonStr);out.flush();out.close();} catch (IOException e) {e.printStackTrace();}}/*** 导出到excel* @param response* @param workbook*/public static void exportExcel(HttpServletResponse response, HSSFWorkbook workbook ){try{OutputStream out = response.getOutputStream();;response.setContentType("application/vnd.ms-excel;charset=utf-8");response.setCharacterEncoding("utf-8");response.setHeader("Content-disposition", "attachment; filename="
//               + new String("所有办件统计".getBytes("utf-8"), "ISO8859-1")+".xls");+ String.valueOf(URLEncoder.encode("所有办件统计", "UTF-8"))+".xls");workbook.write(out);out.flush();out.close();}catch(Exception e){e.printStackTrace();}}/*** 导出到excel，文件名可自定义* @param response* @param workbook*/public static void exportExcel(HttpServletResponse response, HSSFWorkbook workbook, String fileName ){try{OutputStream out = response.getOutputStream();;response.setContentType("application/vnd.ms-excel;charset=utf-8");response.setCharacterEncoding("utf-8");/*response.setHeader("Content-disposition", "attachment; filename="  + String.valueOf(URLEncoder.encode(fileName, "UTF-8"))+".xls");*//**ISO8859-1是页面上数据传输的格式*/response.addHeader("Content-Disposition", "attachment;filename="+ new String(fileName.getBytes("GB2312"),"ISO-8859-1")+".xls");workbook.write(out);out.flush();out.close();}catch(Exception e){e.printStackTrace();}}/*** 输出分页列表到前台供datagrid使用* @param response* @param list*/public static void outPutToDataGrid(HttpServletResponse response, List<Map<String, Object>> list){try {response.setContentType("text/html;charset=GBK");PrintWriter out = response.getWriter();DataGridObject dg = new DataGridObject();dg.setRows(list);dg.setTotal(PagerThreadLocal.getValue().getTotal()==0?list.size():PagerThreadLocal.getValue().getTotal());JSONObject jsonObject = JSONObject.fromObject(dg);out.print(jsonObject.toString());out.flush();out.close();} catch (IOException e) {e.printStackTrace();}}
}

二、解析加密数据再导出

2.1 ExcelUtil工具类：

import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.List;/***  借鉴地址：https://blog.csdn.net/qq_37960007/article/details/84451534?utm_medium=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-14.control&dist_request_id=1328593.13383.16147799212719547&depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-14.control*  java如何读取、写入Excel文件(将内容转成任意的bean对象)*/
public class ExcelUtil {public static <T> List<T> parseFromExcel(String path, Class<T> aimClass) {return parseFromExcel(path, 0, aimClass);}/***  导入Excel文件，将其数据装换为对应实体bean* @param path 文件路径* @param firstIndex 从firstIndex行开始* @param aimClass 对应的实体类* @param <T>* @return*/@SuppressWarnings("deprecation")public static <T> List<T> parseFromExcel(String path, int firstIndex, Class<T> aimClass) {List<T> result = new ArrayList<T>();try {FileInputStream fis = new FileInputStream(path);Workbook workbook = WorkbookFactory.create(fis);//对excel文档的第一页,即sheet1进行操作Sheet sheet = workbook.getSheetAt(0);int lastRaw = sheet.getLastRowNum();for (int i = firstIndex; i <= lastRaw; i++) {//第i行Row row = sheet.getRow(i);T parseObject = aimClass.newInstance();Field[] fields = aimClass.getDeclaredFields();for (int j = 0; j < fields.length; j++) {Field field = fields[j];field.setAccessible(true);Class<?> type = field.getType();//第j列Cell cell = row.getCell(j);if (cell == null)continue;//很重要的一行代码,如果不加,像12345这样的数字是不会给你转成String的,只会给你转成double,而且会导致cell.getStringCellValue()报错cell.setCellType(Cell.CELL_TYPE_STRING);String cellContent = cell.getStringCellValue();cellContent = "".equals(cellContent) ? "0" : cellContent;if (type.equals(String.class)) {field.set(parseObject, cellContent);} else if (type.equals(char.class) || type.equals(Character.class)) {field.set(parseObject, cellContent.charAt(0));} else if (type.equals(int.class) || type.equals(Integer.class)) {field.set(parseObject, Integer.parseInt(cellContent));} else if (type.equals(long.class) || type.equals(Long.class)) {field.set(parseObject, Long.parseLong(cellContent));} else if (type.equals(float.class) || type.equals(Float.class)) {field.set(parseObject, Float.parseFloat(cellContent));} else if (type.equals(double.class) || type.equals(Double.class)) {field.set(parseObject, Double.parseDouble(cellContent));} else if (type.equals(short.class) || type.equals(Short.class)) {field.set(parseObject, Short.parseShort(cellContent));} else if (type.equals(byte.class) || type.equals(Byte.class)) {field.set(parseObject, Byte.parseByte(cellContent));} else if (type.equals(boolean.class) || type.equals(Boolean.class)) {field.set(parseObject, Boolean.parseBoolean(cellContent));}}result.add(parseObject);}fis.close();} catch (Exception e) {e.printStackTrace();System.err.println("An error occured when parsing object from Excel. at " );}return result;}// 带标题写入Excelpublic static <T> void writeExcelWithTitle(List<T> beans, String path) {writeExcel(beans,path,true);}// 仅把数据写入Excelpublic static <T> void writeExcel(List<T> beans, String path) {writeExcel(beans,path,false);}/**** @param beans 需要写成Excel文件的集合数据* @param path  写到的指定路径* @param writeTitle 文件标题* @param <T>*/private static <T> void writeExcel(List<T> beans, String path, boolean writeTitle) {if(beans == null || beans.size() == 0){return;}Workbook workbook = new HSSFWorkbook();FileOutputStream fos = null;int offset = writeTitle ? 1 : 0;try {Sheet sheet = workbook.createSheet();for (int i = 0; i < beans.size() + offset; ++i) {if(writeTitle && i == 0) {createTitle(beans, sheet);continue;}Row row = sheet.createRow(i);T bean = beans.get(i - offset);Field[] fields = bean.getClass().getDeclaredFields();for (int j = 0; j < fields.length; j++) {Field field = fields[j];field.setAccessible(true);Cell cell = row.createCell(j);//Date,Calender都可以 使用  +"" 操作转成字符串cell.setCellValue(field.get(bean)+"");}}fos = new FileOutputStream(path);workbook.write(fos);} catch (Exception e) {e.printStackTrace();}finally {try {fos.close();workbook.close();} catch (IOException e) {e.printStackTrace();}}}private static <T> void createTitle(List<T> beans,Sheet sheet){Row row = sheet.createRow(0);T bean = beans.get(0);Field[] fields = bean.getClass().getDeclaredFields();for (int i = 0; i < fields.length; i++) {Field field = fields[i];field.setAccessible(true);Cell cell = row.createCell(i);cell.setCellValue(field.getName());}}public static void main(String[] args) {/*** 1.将Excel文件读取到程序中*///参数里的1表示有效行数从第1行开始List<AESPublicUser> publicUserList = ExcelUtil.parseFromExcel("C:\\Users\\tission_01\\Desktop\\（解密前）.xlsx", 1,AESPublicUser.class);System.out.println("数据量：-----------" + publicUserList.size());for (AESPublicUser aesPublicUser : publicUserList) {System.out.println(aesPublicUser.toString());}// 解密手机号码或IDcard号码EncryptDesUtils des2 = new EncryptDesUtils("TESTTESTWIJDINVA");for(AESPublicUser user : publicUserList){try {user.setCertificate_no(des2.decrypt(user.getCertificate_no()));user.setContact_phone(des2.decrypt(user.getContact_phone()));} catch (Exception e) {e.printStackTrace();}}/*** 2.将数据写成Excel文件*/
//        // 带标题写入excel
//        List scenics = Lists.newArrayList();
//        ExcelUtil.writeExcelWithTitle(scenics,"C:\\Users\\unive\\Documents\\景点信息\\scenics.xlsx");
//
//        // 不带标题写入excelExcelUtil.writeExcel(publicUserList,"C:\\Users\\tission_01\\Desktop\\(解密后).xlsx");}
}

2.2 Excel 对应的实体类:

import lombok.AllArgsConstructor;
import lombok.Builder;
import lombok.Data;
import lombok.NoArgsConstructor;@Data
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class AESPublicUser {/*** 用户ID*/private String user_id;/*** 用户名*/
//    private String user_name;/*** 手机号码*/private String contact_phone;/*** 证件号码*/private String certificate_no;
}

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POI动态字段导出Excel-导入Excel，解析加密数据再导出

一、POI动态字段导出Excel-导入Excel

1.直接导出Excel

2.响应式导出Excel

3.ExportUtils工具类

4.Writer工具类

二、解析加密数据再导出

2.1 ExcelUtil工具类：

2.2 Excel 对应的实体类:

POI动态字段导出Excel-导入Excel，解析加密数据再导出相关推荐

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POI动态字段导出Excel-导入Excel，解析加密数据再导出

一、POI动态字段导出Excel-导入Excel

1.直接导出Excel

2.响应式导出Excel

3.ExportUtils工具类

4.Writer工具类

二、解析加密数据再导出

2.1 ExcelUtil工具类：

2.2 Excel 对应的 实体类:

POI动态字段导出Excel-导入Excel，解析加密数据再导出相关推荐

最新文章

热门文章

2.2 Excel 对应的实体类: