一、简介

Apache POI 是用Java编写的免费开源的跨平台的 Java API，Apache POI提供API给Java程式对Microsoft Office格式档案读和写的功能。POI为“Poor Obfuscation Implementation”的首字母缩写，意为“简洁版的模糊实现”。

二、excel模板

三、项目中maven依赖

<!--poi依赖-->
<dependency><groupId>org.apache.poi</groupId><artifactId>poi</artifactId><version>4.1.0</version>
</dependency>
<dependency><groupId>org.apache.poi</groupId><artifactId>poi-scratchpad</artifactId><version>4.1.0</version>
</dependency>
<dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml-schemas</artifactId><version>4.1.0</version>
</dependency>
<dependency><groupId>org.apache.poi</groupId><artifactId>poi-ooxml</artifactId><version>4.1.0</version>
</dependency>
<dependency><groupId>org.apache.xmlbeans</groupId><artifactId>xmlbeans</artifactId><version>3.1.0</version>
</dependency><!--poi依赖-->

四、Excel模板操作代码

import org.apache.poi.EncryptedDocumentException;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.*;
import org.aspectj.weaver.ast.Test;
import org.springframework.core.io.ClassPathResource;import java.io.*;
import java.util.*;
import java.util.function.Predicate;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;/*** 使用一个已经存在的Excel作为模板，可以对当前的模板Excel进行修改操作，* 然后重新输出为流，或者存入文件系统当中。** * @Description: excel模板操作* * */
public class ExcelTemplate {private String path;private Workbook workbook;private Sheet[] sheets;private Sheet sheet;private Throwable ex;private List<Cell> cellList = null;private Pattern doublePattern = Pattern.compile("^[0-9]+[.]{0,1}[0-9]*[dD]{0,1}$");/*** 通过模板Excel的路径初始化* */public ExcelTemplate(String path) {this.path = path;init();}public ExcelTemplate(InputStream is) {init(is);}private void init(){ClassPathResource classPathResource = new ClassPathResource(path);//        File file = new File(path);
//        if (file.exists() && (path == null
//                || (!path.endsWith(".xlsx") && !path.endsWith(".xls")))) {//            ex = new IOException("错误的文件格式");
//        } else{try (InputStream is = classPathResource.getInputStream()){workbook = WorkbookFactory.create(is);sheets = new Sheet[workbook.getNumberOfSheets()];for(int i = 0;i < sheets.length;i++){sheets[i] = workbook.getSheetAt(i);}if(sheets.length > 0) {sheet = sheets[0];}sheet.setForceFormulaRecalculation(true);} catch (EncryptedDocumentException e) {ex = e;} catch (IOException e) {ex = e;}
//        }}private void init(InputStream is){try {workbook = WorkbookFactory.create(is);sheets = new Sheet[workbook.getNumberOfSheets()];for(int i = 0;i < sheets.length;i++){sheets[i] = workbook.getSheetAt(i);}if(sheets.length > 0) {sheet = sheets[0];}sheet.setForceFormulaRecalculation(true);} catch (EncryptedDocumentException e) {ex = e;} catch (IOException e) {ex = e;}}private boolean initSheet(int sheetNo){if(!examine() || sheetNo < 0 || sheetNo > workbook.getNumberOfSheets() - 1) {return false;}int sheetNum = workbook.getNumberOfSheets();sheets = new Sheet[sheetNum];for(int i = 0;i < sheetNum;i++){if(i == sheetNo) {sheet = workbook.getSheetAt(i);}sheets[i] = workbook.getSheetAt(i);}sheet = workbook.getSheetAt(sheetNo);sheet.setForceFormulaRecalculation(true);return true;}/*** 验证模板是否可用* @return true-可用 false-不可用* */public boolean examine(){if(ex == null && workbook != null) {return true;}return false;}private boolean examineSheetRow(int index){if(index < 0 || index > sheet.getLastRowNum()) {return false;}return true;}/*** 使用一个已经存在的row作为模板，* 从sheet[sheetNo]的toRowNum行开始插入这个row模板的副本** @param sheetNo 需要操作的Sheet的编号* @param fromRowStartIndex 模板row区域的开始索引* @param fromRowEndIndex 模板row区域的结束索引* @param toRowIndex 开始插入的row索引值* @param copyNum 复制的数量* @param delRowTemp 是否删除模板row区域* @return int 插入的行数量* @throws IOException* */public int addRowByExist(int sheetNo,int fromRowStartIndex, int fromRowEndIndex,int toRowIndex, int copyNum,boolean delRowTemp)throws IOException {LinkedHashMap<Integer, LinkedList<String>> map = new LinkedHashMap<>();for(int i = 1;i <= copyNum;i++){map.put(i,new LinkedList<>());}return addRowByExist(sheetNo,fromRowStartIndex,fromRowEndIndex,toRowIndex,map,delRowTemp);}/*** 使用一个已经存在的row作为模板，* 从sheet[sheetNo]的toRowNum行开始插入这个row模板的副本,* 并且使用areaValue从左至右，从上至下的替换掉* row区域中值为 ${} 的单元格的值** @param sheetNo 需要操作的Sheet的编号* @param fromRowIndex 模板行的索引* @param toRowIndex 开始插入的row索引* @param areaValues 替换模板row区域的${}值* @return int 插入的行数量* @throws IOException* */public int addRowByExist(int sheetNo,int fromRowIndex, int toRowIndex,LinkedHashMap<Integer,LinkedList<String>> areaValues)throws IOException {return addRowByExist(sheetNo,fromRowIndex,fromRowIndex,toRowIndex,areaValues,true);}/*** 使用一个已经存在的行区域作为模板，* 从sheet的toRowNum行开始插入这段行区域,* areaValue会从左至右，从上至下的替换掉row区域* 中值为 ${} 的单元格的值** @param sheetNo 需要操作的Sheet的编号* @param fromRowStartIndex 模板row区域的开始索引* @param fromRowEndIndex 模板row区域的结束索引* @param toRowIndex 开始插入的row索引* @param areaValues 替换模板row区域的${}值* @param delRowTemp 是否删除模板row区域* @return int 插入的行数量* @throws IOException* */public int addRowByExist(int sheetNo,int fromRowStartIndex, int fromRowEndIndex,int toRowIndex,LinkedHashMap<Integer,LinkedList<String>> areaValues, boolean delRowTemp)throws IOException {exception();if(!examine()|| !initSheet(sheetNo)|| !examineSheetRow(fromRowStartIndex)|| !examineSheetRow(fromRowEndIndex)|| fromRowStartIndex > fromRowEndIndex) {return 0;}int areaNum;List<Row> rows = new ArrayList<>();if(areaValues != null){int n = 0,f = areaValues.size() * (areaNum = (fromRowEndIndex - fromRowStartIndex + 1));// 在插入前腾出空间，避免新插入的行覆盖原有的行shiftAndCreateRows(sheetNo,toRowIndex,f);// 读取需要插入的数据for (Integer key:areaValues.keySet()){List<Row> temp = new LinkedList<>();// 插入行for(int i = 0;i < areaNum;i++){int num = areaNum * n + i;Row toRow = sheet.getRow(toRowIndex + num);Row row;if(toRowIndex >= fromRowEndIndex) {row = copyRow(sheetNo,sheet.getRow(fromRowStartIndex + i),sheetNo,toRow,true,true);} else {row = copyRow(sheetNo,sheet.getRow(fromRowStartIndex + i + f),sheetNo,toRow,true,true);}temp.add(row);}// 使用传入的值覆盖${}或者N${}replaceMark(temp,areaValues.get(key));rows.addAll(temp);n++;}if(delRowTemp){if(toRowIndex >= fromRowEndIndex) {removeRowArea(sheetNo,fromRowStartIndex,fromRowEndIndex);} else {removeRowArea(sheetNo,fromRowStartIndex + f,fromRowEndIndex + f);}}}return rows.size();}/*** 使用一个已经存在的列区域作为模板，* 从sheet的toColumnIndex列开始插入这段列区域,* areaValue会从上至下，从左至右的替换掉列区域* 中值为 ${} 的单元格的值** @param sheetNo 需要操作的Sheet的编号* @param fromColumnStartIndex 模板列区域的开始索引* @param fromColumnEndIndex 模板列区域的结束索引* @param toColumnIndex 开始插入的列索引* @param areaValues 替换模板列区域的${}值* @param delColumnTemp 是否删除模板列区域* @return int 插入的列数量* @throws IOException* */public int addColumnByExist(int sheetNo,int fromColumnStartIndex, int fromColumnEndIndex,int toColumnIndex,LinkedHashMap<Integer,LinkedList<String>> areaValues, boolean delColumnTemp)throws IOException{exception();if(!examine()|| !initSheet(sheetNo)|| fromColumnStartIndex > fromColumnEndIndex|| toColumnIndex < 0) {return 0;}// 合并区域的列的数量int areaNum;List<Integer> n = new ArrayList<>();n.add(0);if(areaValues != null){int f = areaValues.size() * (areaNum = (fromColumnEndIndex - fromColumnStartIndex + 1));// 创建空白的列shiftAndCreateColumns(sheetNo,toColumnIndex-1,f);// 获取所有合并区域List<CellRangeAddress> crds = sheet.getMergedRegions();// 读取需要插入的数据for (Integer key:areaValues.keySet()){for(int i = 0;i < areaNum;i++){// 获取插入的位置int position = toColumnIndex + n.get(0) * areaNum + i;// 插入的列的位置是在复制区域之后if(toColumnIndex >= fromColumnStartIndex) {copyColumn(sheetNo,fromColumnStartIndex + i,sheetNo,position,true);}// 插入的列的位置是在复制区域之前else {copyColumn(sheetNo,fromColumnStartIndex + i + f,sheetNo,position,true);}}// 复制源列的合并区域到新添加的列if(crds != null){crds.forEach(crd -> {// 列偏移量int offset = toColumnIndex - fromColumnStartIndex + areaNum * n.get(0);// 合并区域的宽度int rangeAreaNum = crd.getLastColumn() - crd.getFirstColumn() + 1;// 原合并区域的首列int firstColumn = crd.getFirstColumn();// 需要添加的合并区域首列int addFirstColumn = firstColumn + offset;// 根据插入的列的位置是在复制区域之前还是之后// firstColumn和addFirstColumn分配不同的值firstColumn = toColumnIndex >= fromColumnStartIndex ? firstColumn : firstColumn - f;addFirstColumn = toColumnIndex >= fromColumnStartIndex ? addFirstColumn : toColumnIndex + areaNum * n.get(0);if(firstColumn >= fromColumnStartIndex && firstColumn < fromColumnEndIndex){if ((firstColumn + rangeAreaNum - 1) > fromColumnEndIndex) {rangeAreaNum = fromColumnEndIndex - firstColumn + 1;}if(rangeAreaNum > areaNum){mergedRegion(sheetNo,crd.getFirstRow(),crd.getLastRow(),addFirstColumn,addFirstColumn + areaNum - 1);}else {mergedRegion(sheetNo,crd.getFirstRow(),crd.getLastRow(),addFirstColumn,addFirstColumn + rangeAreaNum - 1);}}});}// 填充${}List<String> fillValues = new ArrayList<>(areaValues.get(key));if (fillValues == null || fillValues.size() == 0){n.replaceAll(i -> i + 1);continue;}List<Cell> needFillCells;initCellList(sheetNo);needFillCells = cellList;// 获取所有的值为${}单元格needFillCells = needFillCells.stream().filter(c -> {if(c != null && c.getCellType() == CellType.STRING){if ("${}".equals(c.getStringCellValue()) || "N${}".equals(c.getStringCellValue())) {return true;}}return false;}).collect(Collectors.toList());if (needFillCells == null){n.replaceAll(i -> i + 1);continue;}// 所有的${}单元格按照列从小到大，行从小到大的顺序排序needFillCells.sort((c1,c2) -> {if (c1 == null && c2 == null) {return 0;}if (c1 == null) {return 1;}if (c2 == null) {return -1;}if(c1.getColumnIndex() > c2.getColumnIndex()) {return 1;} else if(c1.getColumnIndex() < c2.getColumnIndex()) {return -1;} else {if(c1.getRowIndex() > c2.getRowIndex()) {return 1;} else if(c1.getRowIndex() < c2.getRowIndex()) {return -1;} else {return 0;}}});needFillCells.stream().filter(c -> {if(c == null) {return false;}// 筛选出当前需要填充的单元格return c.getColumnIndex() >= toColumnIndex + areaNum * n.get(0)&& c.getColumnIndex() <= toColumnIndex + areaNum * (n.get(0) + 1);}).forEach(c -> {if(fillValues.size() > 0){// 设置为列的首行，再移除掉首行的值String value = fillValues.stream().filter(Objects::nonNull).findFirst().orElse("");if (doublePattern.matcher(value == null ? "": value).find()){c.setCellValue(Double.parseDouble(value));}else {c.setCellValue(value);}CellStyle cellStyle = c.getCellStyle();cellStyle.setWrapText(true);c.setCellStyle(cellStyle);fillValues.remove(0);}});n.replaceAll(i -> i + 1);}if(delColumnTemp){if(toColumnIndex >= fromColumnStartIndex) {removeColumnArea(sheetNo,fromColumnStartIndex,fromColumnEndIndex);} else {removeColumnArea(sheetNo,fromColumnStartIndex + f,fromColumnEndIndex + f);}}}return n.get(0);}/*** 使用一个已经存在的列区域作为模板，* 从sheet的toColumnIndex列开始插入这段列区域** @param sheetNo 需要操作的Sheet的编号* @param fromColumnStartIndex 模板列区域的开始索引* @param fromColumnEndIndex 模板列区域的结束索引* @param toColumnIndex 开始插入的列索引* @param copyNum 复制数量* @param delColumnTemp 是否删除模板列区域* @return int 插入的列数量* @throws IOException* */public int addColumnByExist(int sheetNo,int fromColumnStartIndex, int fromColumnEndIndex,int toColumnIndex,int copyNum, boolean delColumnTemp)throws IOException{LinkedHashMap<Integer, LinkedList<String>> map = new LinkedHashMap<>();for(int i = 1;i <= copyNum;i++){map.put(i,new LinkedList<>());}return addColumnByExist(sheetNo,fromColumnStartIndex,fromColumnEndIndex,toColumnIndex,map,delColumnTemp);}/*** 填充Excel当中的变量** @param fillValues 填充的值* @return int 受影响的变量数量* @throws IOException**/public int fillVariable(Map<String,String> fillValues) throws IOException {return fillVariable(0,fillValues);}/*** 填充Excel当中的变量** @param sheetNo 需要操作的Sheet的编号* @param fillValues 填充的值* @return int 受影响的变量数量* @throws IOException**/public int fillVariable(int sheetNo,Map<String,String> fillValues)throws IOException {exception();if(!examine()|| sheetNo < 0|| sheetNo > sheets.length - 1|| fillValues == null|| fillValues.size() == 0) {return 0;}// 验证${}格式Pattern pattern = Pattern.compile("(\\$\\{[^\\}]+})");// 把所有的${}按Cell分类，也就是说如果一个Cell中存在两个${}，// 这两个变量的Cell应该一样Map<Cell,Map<String,String>> cellVal = new HashMap<>();List<Integer> ns = new ArrayList<>();ns.add(0);fillValues.forEach((k,v) ->{// 找到变量所在的单元格Cell cell = findCells(sheetNo,s -> {if(s == null || "".equals(s)) {return false;}Matcher matcher = pattern.matcher(s);while(matcher.find()){String variable = matcher.group(1);if(variable != null&& formatParamCode(variable).equals(k.trim())) {return true;}}return false;}).stream().findFirst().orElse(null);if(cell != null){Map<String,String> cellValMap = cellVal.get(cell);if(cellValMap == null) {cellValMap = new HashMap<>();}cellValMap.put(k,v);cellVal.put(cell,cellValMap);ns.replaceAll(n -> n + 1);}});cellVal.forEach((k,v) -> {String cellValue = k.getStringCellValue();String value = composeMessage(cellValue,v);Matcher matcher = doublePattern.matcher(value == null ? "": value);if (matcher.find()){k.setCellValue(Double.parseDouble(value));}else {k.setCellValue(value);}CellStyle cellStyle = k.getCellStyle();cellStyle.setWrapText(true);k.setCellStyle(cellStyle);});return ns.get(0);}/*** 指定cell插入图片** @param sheetNo 需要操作的Sheet的编号* @param imageBytes 图片字节流* @param imgType 图片类型（举例：png 传入 Workbook.PICTURE_TYPE_PNG作为参数）* @param startRow 开始行* @param endRow 结束行* @param startCol 开始列* @param endCol 结束列* */public void insertPicture(int sheetNo,byte[] imageBytes,int imgType,int startRow,int endRow,int startCol,int endCol) throws IOException {exception();if (!initSheet(sheetNo)) {return;}Drawing patriarch = sheet.createDrawingPatriarch();ClientAnchor anchor = null;if (sheet instanceof XSSFSheet) {anchor = new XSSFClientAnchor(0, 0, 0, 0, (short) startCol, startRow, (short) endCol, endRow);} else {anchor = new HSSFClientAnchor(0, 0, 0, 0, (short) startCol, startRow, (short) endCol, endRow);}anchor.setAnchorType(ClientAnchor.AnchorType.MOVE_AND_RESIZE);patriarch.createPicture(anchor, workbook.addPicture(imageBytes, imgType));if (sheet instanceof  XSSFSheet) {List<XSSFShape> shapes = ((XSSFDrawing)patriarch).getShapes();for (XSSFShape shape : shapes) {XSSFPicture picture = (XSSFPicture) shape;picture.getPreferredSize();}}else {List<HSSFShape> list = ((HSSFSheet)sheet).getDrawingPatriarch().getChildren();for (HSSFShape shape : list) {if (shape instanceof HSSFPicture) {HSSFPicture picture = (HSSFPicture) shape;picture.getClientAnchor();picture.getPictureData();}}}}/*** 根据行坐标和列坐标定位到单元格，填充单元格** @param sheetNo 需要操作的Sheet的编号* @param rowIndex 行坐标* @param columnIndex 列坐标* @param value 填充的值* @return boolean 是否成功* @throws IOException**/public boolean fillByCoordinate(int sheetNo,int rowIndex,int columnIndex,String value)throws IOException {exception();if(!initSheet(sheetNo)) {return false;}Row row = sheet.getRow(rowIndex);if(row == null) {return false;}Cell cell = row.getCell(columnIndex);if(cell == null) {return false;}if (doublePattern.matcher(value == null ? "": value).find()){cell.setCellValue(Double.parseDouble(value));}else{cell.setCellValue(value);}return true;}/*** 根据断言predicate查找sheet当中符合条件的cell** @param sheetNo 需要操作的Sheet的编号* @param predicate 筛选的断言* @return List<Cell> 符合条件的Cell* */public List<Cell> findCells(int sheetNo,Predicate<String> predicate){Objects.requireNonNull(predicate);initCellList(sheetNo);return cellList.stream().map(c -> {if(c != null && c.getCellType() == CellType.STRING) {return c.getStringCellValue();}return null;})// Cell流转换为String流.filter(predicate).map(s -> cellList.stream().filter(c -> {if(c != null && c.getCellType() == CellType.STRING&& s.equals(c.getStringCellValue())) {return true;}return false;}).findFirst().orElse(null))// String流重新转换位Cell流.filter(c -> c != null).collect(Collectors.toList());}/*** 根据断言predicate查找sheet当中符合条件的Row** @param sheetNo 需要操作的Sheet的编号* @param predicate 筛选的断言* @return List<Row> 符合条件的Row* */public List<Row> findRows(int sheetNo,Predicate<Row> predicate){if(!examine() || !initSheet(sheetNo)) {return null;}List<Row> rows = new ArrayList<>();for(int i = sheet.getFirstRowNum();i <= sheet.getLastRowNum();i++){Row row = sheet.getRow(i);if(predicate.test(row)) {rows.add(row);}}return rows;}/*** 提取变量中的值，比如 formatParamCode("${1234}"),* 会得到结果1234** @param paramCode 需要提取的字符串* @return String* */private String formatParamCode(String paramCode){if(paramCode == null) {return "";}return paramCode.replaceAll("\\$", "").replaceAll("\\{", "").replaceAll("\\}", "");}/*** 使用paramData当中的值替换data当中的变量** @param data 需要提取的字符串* @param paramData 需要替换的值* @return String* */private String composeMessage(String data, Map<String,String> paramData){String regex = "\\$\\{(.+?)\\}";Pattern pattern = Pattern.compile(regex);Matcher matcher = pattern.matcher(data == null ? "": data);StringBuffer msg = new StringBuffer();while (matcher.find()) {String key = matcher.group(1);// 键名String value = paramData.get(key);// 键值if(value == null) {value = "";} else {value = value.replaceAll("\\$", "\\\\\\$");}matcher.appendReplacement(msg, value);}matcher.appendTail(msg);return msg.toString();}/*** 计算excel公式中的单元格的列和行加上数值后的结果** @param isColumn 是否是行的计算* @param value 原始值* @param addNum 添加的数量* @return String* */private String addRowOrColumnIndex(boolean isColumn,String value,int addNum){value = value == null ? "" : value;if(isColumn){if (!Pattern.compile("^[A-Z]+$").matcher(value).find()) {return value;}char[] cs = value.toCharArray();int cardinal = 0;// 组合转换为数字for (int i = cs.length - 1; i >= 0; i--) {cardinal += Math.pow(26,cs.length - 1 - i) * (cs[i] - 64);}// 加上添加后的数值cardinal += addNum;// 不能为0cardinal = cardinal <= 0 ? 1 : cardinal;// 是否需要向前借一位boolean borrowBit = false;Stack<Character> stack = new Stack<>();// 数字转换为组合while (true && cardinal > 0){int mode = cardinal % 26;// 如果到达了第一位if(cardinal >= 1 && cardinal < 26){// 是否需要借位if (borrowBit) {mode -= 1;}// 首位借位之后必须大于0才能添加if (mode > 0) {stack.add((char)(mode + 64));}break;}cardinal -= mode;cardinal /= 26;if (borrowBit){if (mode != 0) {mode -= 1;}// 如果借位的时候，发现本身也为0，需要向前再借位else{mode = 25;borrowBit = true;stack.add((char)(mode + 64));continue;}}if (mode == 0){mode = 26;borrowBit = true;}else {borrowBit = false;}stack.add((char)(mode + 64));}int size = stack.size();char[] chars = new char[size];for (int j = size - 1; j >= 0; j--) {chars[size - 1 - j] = stack.get(j);}return new String(chars);}else {if(!Pattern.compile("^[0-9]+$").matcher(value).find()) {return value;}try{int intValue = Integer.parseInt(value);intValue += addNum;if (intValue <= 0) {return "1";}return Integer.toString(intValue);}catch (NumberFormatException e){return value;}}}/*** 修改公式里面单元格参数的坐标** @param formula 公式* @param index 第几个单元格参数* @param rowAddNum 给行添加的数量* @param columnAddNum 给列添加的数量* @return String* */private String composeFormula(String formula,int index,int rowAddNum,int columnAddNum){String regex = "[A-Z]+[0-9]+";Pattern pattern = Pattern.compile(regex);Matcher matcher = pattern.matcher(formula == null ? "" : formula);List<String> valueList = new LinkedList<>();String oldFormula = formula;while(matcher.find()){String value = matcher.group();valueList.add(value);formula = formula.replaceFirst(value,"@&");}if (index >= 0 && index < valueList.size()){String value = valueList.get(index);Matcher columnMatcher = Pattern.compile("[A-Z]+").matcher(value);String newValue = value;if (columnMatcher.find()){String columnIndex = columnMatcher.group();String rowIndex = value.replaceAll(columnIndex,"");columnIndex = addRowOrColumnIndex(true,columnIndex,columnAddNum);rowIndex = addRowOrColumnIndex(false,rowIndex,rowAddNum);newValue = columnIndex + rowIndex;}valueList.set(index,newValue);}String[] spilts = formula.split("@&");if (spilts.length == 0){if (valueList.size() == 1) {return valueList.get(0);}return oldFormula;}StringBuffer newFormula = new StringBuffer();int position = 0;for (int i = 0; i < spilts.length; i++) {newFormula.append(spilts[i]);if (position < valueList.size()){newFormula.append(valueList.get(position++));}}return newFormula.toString();}/*** 获取单元格里面公式的变量数量* 例如公式 SUM(AP40:AV40)，含有两个单元格变量 AP40和AV40，* 使用此方法会返回2** @param cell 需要操作的单元格* @return int 单元格变量的数量* */public int getFormulaVariableNum(Cell cell){if (cell == null || cell.getCellType() != CellType.FORMULA) {return 0;}String formula = cell.getCellFormula();Matcher matcher = Pattern.compile("[A-Z]+[0-9]+").matcher(formula == null ? "" : formula);int count = 0;while(matcher.find()){count++;}return count;}/*** 修改单元格的公式的参数* excel的所有列按照如下规则分布，* A,B,C,D...Z,AA,AB...AZ,BA,BB...BZ...以此类推，* 你可以看成是一个关于A,B,C...Z的排列组合问题** 举例：* 单元格cell的公式为 SUM(AP40:AV40) 是求单元格 AP40 到 AV40的单元格的和，* 其中AP40中的AP表示单元格的列坐标，40表示横坐标，AV40类推。* 如果使用方法 composeCellFormula(cell,0,2,5)，则cell的公式会修改为 SUM(AU42:AV40)** @param cell 需要修改的单元格* @param index 第几个单元格参数* @param rowAddNum 给行添加的数量* @param columnAddNum 给列添加的数量* @return String* */public void composeCellFormula(Cell cell,int index,int rowAddNum,int columnAddNum){if (cell == null || cell.getCellType() != CellType.FORMULA) {return;}if (cell instanceof HSSFCell) {throw new IllegalArgumentException("4.1.1及之前的版本的POI的处理xls文件的公式单元格有bug，建议换成xlsx文件，" +"或者去官网查看哪个版本修复了这个bug(https://bz.apache.org/bugzilla/show_bug.cgi?id=64517)，换成此版本POI。" +"如果引用的POI版本已经是修复了此BUG的版本的POI，可以删掉这个异常提示！");}String formula = cell.getCellFormula();cell.setCellFormula(composeFormula(formula,index,rowAddNum,columnAddNum));}// 初始化cellListprivate void initCellList(int sheetNo){cellList = new ArrayList<>();if(examine() && !initSheet(sheetNo)) {return;}int rn = sheet.getLastRowNum();for(int i = 0;i <= rn;i++){Row row = sheet.getRow(i);if(row != null){short cn = row.getLastCellNum();for (int j = 0;j < cn;j++){cellList.add(row.getCell(j));}}}}/*** 替换掉所有行区域中的所有 ${} 标记* valueList对rows中${}替换的顺序是：* 从左至右，从上到下** @param rows 行区域* @param vl 替换的值* */private void replaceMark(List<Row> rows,List<String> vl){if (rows == null || vl == null) {return;}List<String> valueList = new ArrayList<>(vl);rows.forEach(r -> {if(r != null){r.forEach(c -> {if (c != null){if (c.getCellType() == CellType.STRING){if("${}".equals(Optional.ofNullable(c.getStringCellValue()).orElse("").trim())){if(valueList == null) {return;}String value = valueList.stream().filter(Objects::nonNull).findFirst().orElse(null);c.setCellValue(value);CellStyle cellStyle = c.getCellStyle();cellStyle.setWrapText(true);c.setCellStyle(cellStyle);if(value != null) {valueList.remove(valueList.indexOf(value));}}else if("N${}".equals(Optional.ofNullable(c.getStringCellValue()).orElse("").trim())){if(valueList == null) {return;}String value = valueList.stream().filter(Objects::nonNull).findFirst().orElse(null);Matcher matcher = doublePattern.matcher(value == null ? "" : value);if (matcher.find()){c.setCellValue(Double.parseDouble(value));CellStyle cellStyle = c.getCellStyle();cellStyle.setWrapText(true);c.setCellStyle(cellStyle);if(value != null) {valueList.remove(valueList.indexOf(value));}}else {throw new IllegalArgumentException("N${} 所替换的内容只能为数字,非法参数\"" + value + "\"");}}}}});}});}/*** 复制Row到sheet中的另一个Row** @param fromSheetNo 复制的行所在的sheet* @param fromRow 需要复制的行* @param toSheetNo 粘贴的行所在的sheet* @param toRow 粘贴的行* @param copyValueFlag 是否需要复制值* @param needMerged 是否需要合并单元格*/private Row copyRow(int fromSheetNo,Row fromRow, int toSheetNo,Row toRow, boolean copyValueFlag,boolean needMerged) {if(fromSheetNo < 0 || fromSheetNo > workbook.getNumberOfSheets()|| toSheetNo < 0 || toSheetNo > workbook.getNumberOfSheets()) {return null;}if (fromRow == null) {return null;}if(toRow == null){Sheet sheet = workbook.getSheetAt(toSheetNo);if(sheet == null) {return null;}toRow = sheet.createRow(fromRow.getRowNum());if(toRow == null) {return null;}}// 设置高度toRow.setHeight(fromRow.getHeight());// 遍历行中的单元格for(Cell c:fromRow){Cell newCell = toRow.createCell(c.getColumnIndex());copyCell(c, newCell, copyValueFlag);}// 如果需要合并if(needMerged){Sheet fromSheet = workbook.getSheetAt(fromSheetNo);Sheet toSheet = workbook.getSheetAt(toSheetNo);// 遍历行当中的所有的合并区域List<CellRangeAddress> crds = fromSheet.getMergedRegions();if(crds != null && crds.size() > 0){for(CellRangeAddress crd : crds){// 如果当前合并区域的首行为复制的源行if(crd.getFirstRow() == fromRow.getRowNum()) {// 创建对应的合并区域CellRangeAddress newCellRangeAddress = new CellRangeAddress(toRow.getRowNum(),(toRow.getRowNum() + (crd.getLastRow() - crd.getFirstRow())),crd.getFirstColumn(),crd.getLastColumn());// 添加合并区域safeMergedRegion(toSheetNo,newCellRangeAddress);}}}}return toRow;}/*** 复制sheet中列的另一列** @param fromSheetNo 复制的行所在的sheet* @param fromColumnIndex 需要复制的行索引* @param toSheetNo 粘贴的行所在的sheet* @param toColumnIndex 粘贴的行* @param copyValueFlag 是否需要复制值*/private void copyColumn(int fromSheetNo,int fromColumnIndex,int toSheetNo,int toColumnIndex,boolean copyValueFlag) {if(fromSheetNo < 0 || fromSheetNo > workbook.getNumberOfSheets()|| toSheetNo < 0 || toSheetNo > workbook.getNumberOfSheets()) {return;}Sheet fromSheet = workbook.getSheetAt(fromSheetNo);Sheet toSheet = workbook.getSheetAt(toSheetNo);for(int i = 0;i <= fromSheet.getLastRowNum();i++){Row fromRow = fromSheet.getRow(i);Row toRow = toSheet.getRow(i);if(fromRow == null) {continue;}if(toRow == null) {toRow = toSheet.createRow(i);}if(toRow == null) {continue;}// 设置高度toRow.setHeight(fromRow.getHeight());Cell srcCell = fromRow.getCell(fromColumnIndex);Cell distCell = toRow.getCell(toColumnIndex);if(srcCell == null) {continue;}if(distCell == null) {distCell = toRow.createCell(toColumnIndex);}// 设置列宽toSheet.setColumnWidth(toColumnIndex,fromSheet.getColumnWidth(fromColumnIndex));copyCell(srcCell,distCell,copyValueFlag);}}/*** 复制Cell到sheet中的另一个Cell** @param srcCell 需要复制的单元格* @param distCell 粘贴的单元格* @param copyValueFlag true则连同cell的内容一起复制*/private void copyCell(Cell srcCell, Cell distCell, boolean copyValueFlag) {if (srcCell == null || distCell == null) {return;}// 获取源单元格的样式CellStyle srcStyle = srcCell.getCellStyle();// 复制样式distCell.setCellStyle(srcStyle);// 复制评论if(srcCell.getCellComment() != null) {distCell.setCellComment(srcCell.getCellComment());}// 不同数据类型处理CellType srcCellType = srcCell.getCellType();if(copyValueFlag) {if(srcCellType == CellType.NUMERIC) {if(DateUtil.isCellDateFormatted(srcCell)) {distCell.setCellValue(srcCell.getDateCellValue());} else {distCell.setCellValue(srcCell.getNumericCellValue());}} else if(srcCellType == CellType.STRING) {distCell.setCellValue(srcCell.getRichStringCellValue());} else if(srcCellType == CellType.BLANK) {} else if(srcCellType == CellType.BOOLEAN) {distCell.setCellValue(srcCell.getBooleanCellValue());} else if(srcCellType == CellType.ERROR) {distCell.setCellErrorValue(srcCell.getErrorCellValue());} else if(srcCellType == CellType.FORMULA) {distCell.setCellFormula(srcCell.getCellFormula());} else {}}}/*** 合并单元格区域，本方法是安全的操作，在出现合并冲突的时候，* 分割合并区域，然后最大限度的合并冲突区域** 使用此方法而不是采用addMergedRegion()和* addMergedRegionUnsafe()合并单元格区间，* 因为此方法会自行解决合并区间冲突，避免报错或者生成* 无法打开的excel** @param sheetNo 需要操作的Sheet的编号* @param firstRow 开始行* @param lastRow 结束行* @param firstCol 开始列* @param lastCol 结束列* */public void mergedRegion(int sheetNo,int firstRow, int lastRow, int firstCol, int lastCol){if(firstRow > lastRow || firstCol > lastCol) {return;}CellRangeAddress address = new CellRangeAddress(firstRow,lastRow,firstCol,lastCol);safeMergedRegion(sheetNo,address);}/*** 合并单元格区域，本方法是安全的操作，在出现合并冲突的时候，* 分割合并区域，然后最大限度的合并冲突区域** @param sheetNo 需要操作的Sheet的编号* @param rangeAddress 合并的单元格区域* */private void safeMergedRegion(int sheetNo,CellRangeAddress rangeAddress){if(!examine() || !initSheet(sheetNo) || rangeAddress == null) {return;}// 获取所有合并的区域List<CellRangeAddress> crds = sheet.getMergedRegions();if(crds == null) {return;}// 获取描述单元格区域的坐标，// 在首行和首列，坐标等于行编号，// 在末行和末列，坐标等于行编号加1int firstRow = rangeAddress.getFirstRow();int lastRow = rangeAddress.getLastRow() + 1;int firstColumn = rangeAddress.getFirstColumn();int lastColumn = rangeAddress.getLastColumn() + 1;// 查找冲突的单元格区域CellRangeAddress conflictRange = crds.stream().filter(crd -> {// 获取单元格区域的坐标int cFirstRow = crd.getFirstRow();int cLastRow = crd.getLastRow() + 1;int cFirstColumn = crd.getFirstColumn();int cLastColumn = crd.getLastColumn()  + 1;// 每个合并单元格区域看成一个长方形// 计算两个长方形中心的X坐标的距离float xDistance = (float)(lastColumn + firstColumn)/2- (float)(cLastColumn + cFirstColumn)/2;// 每个合并单元格区域看成一个长方形// 计算两个长方形中心的Y坐标的距离float yDistance = (float)(lastRow + firstRow)/2- (float)(cLastRow + cFirstRow)/2;// 获取距离的绝对值xDistance = xDistance >= 0 ? xDistance : -xDistance;yDistance = yDistance >= 0 ? yDistance : -yDistance;// 如果两个合并区域相交了，返回trueif(xDistance < ((float)(lastColumn - firstColumn)/2 + (float)(cLastColumn - cFirstColumn)/2)&& yDistance < ((float)(lastRow - firstRow)/2 + (float)(cLastRow - cFirstRow)/2)) {return true;}return false;}).findFirst().orElse(null);// 如果没有查找到冲突的区域，直接合并if(conflictRange == null){if(examineRange(rangeAddress)) {sheet.addMergedRegion(rangeAddress);}}// 如果合并区域冲突了，分离新增的合并区域List<CellRangeAddress> splitRangeAddr = splitRangeAddress(conflictRange,rangeAddress);if(splitRangeAddr != null) {splitRangeAddr.forEach(sra -> safeMergedRegion(sheetNo,sra));}}/*** 如果插入的目标合并区域target和sheet中已存在的合并区域source冲突，* 把target分割成多个合并区域，这些合并区域都不会和source冲突** @param source 已经存在的合并单元格区域* @param target 新增的合并单元格区域* @return target分离之后的合并单元格列表* */private List<CellRangeAddress> splitRangeAddress(CellRangeAddress source,CellRangeAddress target){List<CellRangeAddress> splitRangeAddr = null;if(source == null || target == null) {return null;}// 获取source区域的坐标int sFirstRow = source.getFirstRow();int sLastRow = source.getLastRow() + 1;int sFirstColumn = source.getFirstColumn();int sLastColumn = source.getLastColumn() + 1;// 获取target区域的坐标int tFirstRow = target.getFirstRow();int tLastRow = target.getLastRow() + 1;int tFirstColumn = target.getFirstColumn();int tLastColumn = target.getLastColumn() + 1;while(true){if(splitRangeAddr == null) {splitRangeAddr = new ArrayList<>();}// 如果target被切分得无法越过source合并区域，退出循环if(tFirstRow >= sFirstRow && tLastRow <= sLastRow&& tFirstColumn >= sFirstColumn && tLastColumn <= sLastColumn) {break;}// 只考虑Y坐标，当source的最大Y坐标sLastRow在开区间(tFirstRow,tLastRow)if(sLastRow > tFirstRow && sLastRow < tLastRow){CellRangeAddress address =new CellRangeAddress(sLastRow,tLastRow - 1,tFirstColumn,tLastColumn - 1);tLastRow = sLastRow;if(examineRange(address)) {splitRangeAddr.add(address);}}// 只考虑Y坐标，当source的最小Y坐标sFirstRow在开区间(tFirstRow,tLastRow)if(sFirstRow > tFirstRow && sFirstRow < tLastRow){CellRangeAddress address =new CellRangeAddress(tFirstRow,sFirstRow - 1,tFirstColumn,tLastColumn - 1);tFirstRow = sFirstRow;if(examineRange(address)) {splitRangeAddr.add(address);}}// 只考虑X坐标，当source的最小X坐标sFirstColumn在开区间(tFirstColumn,tLastColumn)if(sFirstColumn > tFirstColumn && sFirstColumn < tLastColumn){CellRangeAddress address =new CellRangeAddress(tFirstRow,tLastRow - 1,tFirstColumn,sFirstColumn - 1);tFirstColumn = sFirstColumn;if(examineRange(address)) {splitRangeAddr.add(address);}}// 只考虑X坐标，当source的最大X坐标sLastColumn在开区间(tFirstColumn,tLastColumn)if(sLastColumn > tFirstColumn && sLastColumn < tLastColumn){CellRangeAddress address =new CellRangeAddress(tFirstRow,tLastRow - 1,sLastColumn,tLastColumn - 1);tLastColumn = sLastColumn;if(examineRange(address)) {splitRangeAddr.add(address);}}}return splitRangeAddr;}// 检查合并区域private boolean examineRange(CellRangeAddress address){if(address == null || !examine()) {return false;}int firstRowNum = address.getFirstRow();int lastRowNum = address.getLastRow();int firstColumnNum = address.getFirstColumn();int lastColumnNum = address.getLastColumn();if(firstRowNum == lastRowNum && firstColumnNum == lastColumnNum) {return false;}return true;}private void exception() throws EncryptedDocumentException, IOException {if(ex != null){if(ex instanceof EncryptedDocumentException) {throw new EncryptedDocumentException("无法读取的加密文件");} else if(ex instanceof IOException) {throw new IOException(ex);} else {return;}}}/*** 把sheet[sheetNo]当中所有的行从startRow位置开始，* 全部下移moveNum数量的位置，并且在腾出的空间当中创建新行** 应该使用本方法而不是采用sheet.shiftRows()和sheet.createRow()，* 主要是因为插入一段行的时候会进行如下步骤：* 第一：使用shiftRows腾出空间* 第二：使用createRow(position)从position开始创建行* 但是这样，后面下移的行的合并单元格会部分消失，* 并且新创建的行的合并单元格并没有消失，这是因为sheet当中的* 大于position的CellRangeAddress并没有跟着下移。* 而使用本方法下移并且在中间自动插入行，新插入的行不会含有任何合并单元格，* 并且原来的合并单元格也不会消失。** @param sheetNo 需要操作的Sheet的编号* @param startRow 移动的Row区间的起始位置* @param moveNum 移动的行数* */public synchronized void shiftAndCreateRows(int sheetNo,int startRow,int moveNum){if(!examine() || !initSheet(sheetNo))return;// 复制当前需要操作的sheet到一个临时的sheetSheet tempSheet = workbook.cloneSheet(sheetNo);// 获取临时sheet在workbook当中的索引int tempSheetNo = workbook.getSheetIndex(tempSheet);// 得到临时sheet的第一个row的索引int firstRowNum = tempSheet.getFirstRowNum();// 得到临时sheet的最后一个row的索引int lastRowNum = tempSheet.getLastRowNum();if(!clearSheet(sheetNo)){return;}if (startRow <= lastRowNum){for(int i= firstRowNum;i <= lastRowNum - firstRowNum + moveNum + 1;i++) {sheet.createRow(i);}}else {for(int i= firstRowNum;i <= startRow + moveNum + 1;i++) {sheet.createRow(i);}}for(int i= firstRowNum;i <= lastRowNum;i++){if(i < startRow) {copyRow(tempSheetNo,tempSheet.getRow(i),sheetNo,sheet.getRow(i),true,true);}// 到达需要插入的索引的位置，需要留出moveNum空间的行else {copyRow(tempSheetNo,tempSheet.getRow(i),sheetNo,sheet.getRow(i + moveNum),true,true);}}settingColumnWidth(tempSheetNo,sheetNo);// 删除临时的sheetworkbook.removeSheetAt(tempSheetNo);}/*** 把sheet[sheetNo]当中所有的列从startColumn位置开始，* 全部右移moveNum数量的位置，并且在腾出的空间当中创建新列** @param sheetNo 需要操作的Sheet的编号* @param startColumn 移动的列区间的起始位置* @param moveNum 移动的列数* */public synchronized void shiftAndCreateColumns(int sheetNo,int startColumn,int moveNum){if(!examine() || !initSheet(sheetNo))return;// 复制当前需要操作的sheet到一个临时的sheetSheet tempSheet = workbook.cloneSheet(sheetNo);// 获取临时sheet在workbook当中的索引int tempSheetNo = workbook.getSheetIndex(tempSheet);// 得到临时sheet的第一个row的索引int firstRowNum = tempSheet.getFirstRowNum();// 得到临时sheet的最后一个row的索引int lastRowNum = tempSheet.getLastRowNum();if(!clearSheet(sheetNo)){return;}for(int i = firstRowNum;i <= lastRowNum;i++){Row row = tempSheet.getRow(i);if(row != null){int addNum = row.getLastCellNum() + moveNum;for(int j = 0;j < moveNum;j++){row.createCell(addNum);}for(int j = 0;j <= row.getLastCellNum();j++){if(j <= startColumn) {copyColumn(tempSheetNo,j,sheetNo,j,true);} else {copyColumn(tempSheetNo,j,sheetNo,j + moveNum,true);}}}}List<CellRangeAddress> crds = tempSheet.getMergedRegions();if(crds == null) {return;}crds.forEach(crd -> {int firstColumn;int lastColumn;if((lastColumn = crd.getLastColumn()) <= startColumn) {safeMergedRegion(sheetNo,crd);} else if((firstColumn = crd.getFirstColumn()) <= startColumn){if(lastColumn > startColumn){CellRangeAddress range = new CellRangeAddress(crd.getFirstRow(),crd.getLastRow(),firstColumn,startColumn);if(examineRange(range)) {safeMergedRegion(sheetNo,range);}range = new CellRangeAddress(crd.getFirstRow(),crd.getLastRow(),startColumn + moveNum + 1,lastColumn + moveNum);if(examineRange(range)) {safeMergedRegion(sheetNo,range);}}}else if(firstColumn > startColumn){CellRangeAddress range = new CellRangeAddress(crd.getFirstRow(),crd.getLastRow(),firstColumn + moveNum,lastColumn + moveNum);if(examineRange(range)) {safeMergedRegion(sheetNo,range);}}});// 删除临时的sheetworkbook.removeSheetAt(tempSheetNo);}/*** 移除掉行区域** @param sheetNo 需要操作的Sheet的编号* @param startRow 起始行* @param endRow 结束行* */public synchronized void removeRowArea(int sheetNo,int startRow,int endRow){if(!examine() || !initSheet(sheetNo) || startRow > endRow)return;// 复制当前需要操作的sheet到一个临时的sheetSheet tempSheet = workbook.cloneSheet(sheetNo);// 获取临时sheet在workbook当中的索引int tempSheetNo = workbook.getSheetIndex(tempSheet);// 得到临时sheet的第一个row的索引int firstRowNum = tempSheet.getFirstRowNum();// 得到临时sheet的最后一个row的索引int lastRowNum = tempSheet.getLastRowNum();// 清空sheetif(!clearSheet(sheetNo)){return;}int delNum = endRow - startRow + 1;for(int i = firstRowNum;i <= lastRowNum;i++){Row fromRow = tempSheet.getRow(i);Row toRow =  sheet.createRow(i);if(i < startRow) {copyRow(tempSheetNo,fromRow,sheetNo,toRow,true,false);} else {copyRow(tempSheetNo,tempSheet.getRow(i + delNum),sheetNo,toRow,true,false);}}List<CellRangeAddress> crds = tempSheet.getMergedRegions();if(crds == null) {return;}crds.forEach(crd -> {if(crd != null){int firstMergedRow = crd.getFirstRow();int lastMergedRow = crd.getLastRow();int firstMergedColumn = crd.getFirstColumn();int lastMergedClolunm = crd.getLastColumn();if(lastMergedRow < startRow) {safeMergedRegion(sheetNo,crd);} else if(lastMergedRow >= startRow){if(lastMergedRow <= endRow){if(firstMergedRow < startRow){mergedRegion(sheetNo,firstMergedRow,startRow - 1,firstMergedColumn,lastMergedClolunm);}}else if(lastMergedRow > endRow){if(firstMergedRow < startRow){mergedRegion(sheetNo,firstMergedRow,lastMergedRow - delNum,firstMergedColumn,lastMergedClolunm);}else if(firstMergedRow >= startRow && firstMergedRow <= endRow){mergedRegion(sheetNo,endRow + 1 - delNum,lastMergedRow - delNum,firstMergedColumn,lastMergedClolunm);}else if(firstMergedRow > endRow){mergedRegion(sheetNo,firstMergedRow - delNum,lastMergedRow - delNum,firstMergedColumn,lastMergedClolunm);}}}}});settingColumnWidth(tempSheetNo,sheetNo);// 删除临时的sheetworkbook.removeSheetAt(tempSheetNo);}/*** 移除掉列区域** @param sheetNo 需要操作的Sheet的编号* @param startCol 起始列* @param endCol 结束列* */public synchronized void removeColumnArea(int sheetNo,int startCol,int endCol){if(!examine() || !initSheet(sheetNo) || startCol > endCol)return;// 复制当前需要操作的sheet到一个临时的sheetSheet tempSheet = workbook.cloneSheet(sheetNo);// 获取临时sheet在workbook当中的索引int tempSheetNo = workbook.getSheetIndex(tempSheet);// 得到临时sheet的第一个row的索引int firstRowNum = tempSheet.getFirstRowNum();// 得到临时sheet的最后一个row的索引int lastRowNum = tempSheet.getLastRowNum();if(!clearSheet(sheetNo)){return;}for(int i = firstRowNum;i <= lastRowNum;i++){Row row = tempSheet.getRow(i);if(row != null){for(int j = 0;j < row.getLastCellNum();j++){// 到达删除区间之前正常复制if(j < startCol) {copyColumn(tempSheetNo,j,sheetNo,j,true);}// 到达删除区间后，跳过区间长度复制else {copyColumn(tempSheetNo,j + endCol - startCol + 1,sheetNo,j,true);}}}}List<CellRangeAddress> crds = tempSheet.getMergedRegions();if(crds == null) {return;}crds.forEach(crd -> {int delColNum = endCol - startCol + 1;int firstMergedRow = crd.getFirstRow();int lastMergedRow = crd.getLastRow();int firstMergedColumn = crd.getFirstColumn();int lastMergedClolunm = crd.getLastColumn();if(lastMergedClolunm < startCol) {safeMergedRegion(sheetNo,crd);} else if(lastMergedClolunm >= startCol){if(lastMergedClolunm <= endCol){if(firstMergedColumn < startCol){mergedRegion(sheetNo,firstMergedRow,lastMergedRow,firstMergedColumn,startCol - 1);}}else if(lastMergedClolunm > endCol){if(firstMergedColumn < startCol){mergedRegion(sheetNo,firstMergedRow,lastMergedRow,firstMergedColumn,lastMergedClolunm - delColNum);}else if(firstMergedColumn >= startCol && firstMergedColumn <= endCol){mergedRegion(sheetNo,firstMergedRow,lastMergedRow,endCol + 1 - delColNum,lastMergedClolunm - delColNum);}else if(firstMergedColumn > endCol){mergedRegion(sheetNo,firstMergedRow,lastMergedRow,firstMergedColumn - delColNum,lastMergedClolunm -delColNum);}}}});// 删除临时的sheetworkbook.removeSheetAt(tempSheetNo);}private void settingColumnWidth(int sourceSheetNo,int sheetNo){if(sourceSheetNo < 0 || sourceSheetNo > workbook.getNumberOfSheets() ||sheetNo < 0 || sheetNo > workbook.getNumberOfSheets()) {return;}List<Row> rows = new ArrayList<>();for(int i = sheet.getFirstRowNum();i <= sheet.getLastRowNum();i++){Row row = sheet.getRow(i);if(row != null) {rows.add(row);}}Row maxColumnRow = rows.stream().max((r1,r2) -> {if (r1 == null && r2 == null) {return 0;}if (r1 == null) {return 1;}if (r2 == null) {return -1;}if (r1.getLastCellNum() == r2.getLastCellNum()) {return 0;}if (r1.getLastCellNum() > r2.getLastCellNum()) {return 1;} else {return -1;}}).filter(r -> r != null).orElse(null);if(maxColumnRow != null){int maxColumn = maxColumnRow.getLastCellNum();for (int i = 0; i < maxColumn; i++) {workbook.getSheetAt(sheetNo).setColumnWidth(i,workbook.getSheetAt(sourceSheetNo).getColumnWidth(i));}}}/*** 清除掉sheet，清除不是删除，只是会清除所有* 的列的值和和合并单元格** @param sheetNo 需要操作的Sheet的编号* @return boolean true-成功 false-失败* */public synchronized boolean clearSheet(int sheetNo){if(!examine()) {return false;}int sheetNum;if(sheetNo < 0 || sheetNo > (sheetNum = workbook.getNumberOfSheets())) {return false;}for(int i = 0;i < sheetNum;i++){if(i == sheetNo){String sheetName = workbook.getSheetName(i);workbook.removeSheetAt(i);workbook.createSheet(sheetName);}if(i > sheetNo){int offset = i - sheetNo;String sheetName = workbook.getSheetName(i-offset);Sheet newSheet = workbook.cloneSheet(i-offset);workbook.removeSheetAt(i-offset);workbook.setSheetName(workbook.getSheetIndex(newSheet),sheetName);}}if(!initSheet(sheetNo)) {return false;}return true;}/*** 存储Excel** @param path 存储路径* @throws IOException*/public void save(String path) throwsIOException {exception();if(!examine())return;try (FileOutputStream fos = new FileOutputStream(path)){workbook.write(fos) ;}}/*** 返回Excel的字节数组** @return byte[]*/public byte[] getBytes(){if(!examine())return null;try(ByteArrayOutputStream ops = new ByteArrayOutputStream()){workbook.write(ops);return ops.toByteArray();} catch (IOException e) {e.printStackTrace();}return null;}/*** 返回Workbook** @return Workbook* @throws IOException* */public Workbook getWorkbook()throws IOException {exception();return workbook;}/*** @return sheet的数量* */public int getSheetNum(){return workbook.getNumberOfSheets();}/*** 返回sheet的行数量** @param sheetNo 需要操作的Sheet的编号* @return int 行数量* */public int getSheetRowNum(int sheetNo){if(!examine() || !initSheet(sheetNo))return 0;return sheets[sheetNo].getLastRowNum();}/*** 设置excel的缩放率** @param zoom 缩放率* */public void setZoom(int zoom){if(!examine() || !initSheet(workbook.getSheetIndex(sheet)))return;for (int i = 0; i < sheets.length; i++) {sheets[i].setZoom(zoom);}}@Overridepublic boolean equals(Object o){if(o == null)return false;if(o == this)return true;if(!(o instanceof ExcelTemplate))return false;if(examine() ^ ((ExcelTemplate)o).examine())return false;return Objects.equals(path,((ExcelTemplate)o).path);}@Overridepublic int hashCode(){int hash = Objects.hashCode(path);return hash >>> 16 ^ hash;}@Overridepublic String toString(){return "ExcelTemplate from " + path + " is " +(examine() ? "effective" : "invalid");}
}

五、Controller层excel模板导出接口代码

import com.github.xiaoymin.knife4j.annotations.ApiOperationSupport;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import lombok.AllArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springblade.core.boot.ctrl.BladeController;
import org.springblade.excel.utils.ExcelTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.Map;/*** POI表格导出 控制器** @author dz*/
@RestController
@AllArgsConstructor
@RequestMapping("/excel")
@Api(value = "excel表格导出", tags = "excel表格导出")
@Slf4j
public class ExcelController  {/*** 导出表格数据*** @return*/@ApiOperationSupport(order = 5)@ApiOperation(value = "导出表格模板")@GetMapping("/export-excel")public void index(HttpServletResponse response) throws UnsupportedEncodingException {// 加载导出模板，excel模板的项目中路径ExcelTemplate excel = new ExcelTemplate("excleTemplate/test.xlsx");if(!excel.examine()) {return ;}// 使用一个Map来存储所有的行区域，// 每个行区域对应Map的一个键LinkedHashMap<Integer, LinkedList<String>> rows = new LinkedHashMap<>();// 创建第一个行区域里面填充的值，ExcelTemplate会按从左至右，// 从上往下的顺序，挨个填充区域里面的${}，所以创建的时候注意顺序就好LinkedList<String> row1 = new LinkedList<>();row1.add("测试供应商一");row1.add("张三");row1.add("合同一");row1.add("微信转账");rows.put(1,row1);LinkedList<String> row2 = new LinkedList<>();row2.add("测试供应商二");row2.add("李四");row2.add("合同二");row2.add("支付宝转账");rows.put(2,row2);// 创建需要填充替换的值//${参数名}Map<String,String> fill = new HashMap<>();//项目名称fill.put("projectName","测试项目");//项目编号fill.put("projectSn","HT2021");//客户名称fill.put("keHuName","股份有限公司");//客户联系人fill.put("ContactName","联系人");String   fileName = "成本跟踪表.xlsx";//创建文件名(改)String   fileNameURL = URLEncoder.encode(fileName, "UTF-8");response.setContentType("octets/stream");response.setHeader("Content-disposition", "attachment;filename="+fileNameURL+";"+"filename*=utf-8''"+fileNameURL);response.addHeader("Pargam", "no-cache");response.addHeader("Cache-Control", "no-cache");try {// 第一个参数，需要操作的sheet的索引// 第二个参数，需要复制的区域的第一行索引// 第三个参数，需要复制的区域的最后一行索引// 第四个参数，需要插入的位置的索引// 第五个参数，填充行区域中${}的值// 第六个参数，是否需要删除原来的区域// 需要注意的是，行的索引一般要减一excel.addRowByExist(0,11,11,12,rows,true);// 第一个参数，需要操作的sheet的索引// 第二个参数，替换sheet当中${<变量的值>}的值excel.fillVariable(0,fill);try(OutputStream os= response.getOutputStream()){os.write(excel.getBytes());os.flush();}} catch (IOException e) {e.printStackTrace();}}}

六、导出excel

参考博客地址：使用POI导出复杂Excel

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POI之excel固定模板导出

POI之excel固定模板导出

一、简介

二、excel模板

三、项目中maven依赖

四、Excel模板操作代码

五、Controller层excel模板导出接口代码

六、导出excel

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