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/**
public class ExcelUtil extends DataDictConverUtil {
private static final Logger log = LoggerFactory.getLogger(ExcelUtil.class);
/** * Excel sheet最大行数,默认65536 */ public static final int sheetSize = 65536; /** * 工作表名称 */ private String sheetName; /** * 导出类型(EXPORT:导出数据;IMPORT:导入模板) */ private Type type; /** * 工作薄对象 */ private Workbook wb; /** * 工作表对象 */ private Sheet sheet; /** * 样式列表 */ private Map<String, CellStyle> styles; /** * 导入导出数据列表 */ private List<T> list; /** * 注解列表 */ private List<Object[]> fields; /** * 实体对象 */ public Class<T> clazz; public ExcelUtil(Class<T> clazz) { this.clazz = clazz; } public void init(List<T> list, String sheetName, Type type) { if (list == null) { list = new ArrayList<T>(); } this.list = list; this.sheetName = sheetName; this.type = type; createExcelField(); createWorkbook(); } /** * 对excel表单默认第一个索引名转换成list * * @param is 输入流 * @return 转换后集合 */ public List<T> importExcel(InputStream is) throws Exception { return importExcel(StringUtils.EMPTY, is); } /** * 对excel表单指定表格索引名转换成list * * @param sheetName 表格索引名 * @param is 输入流 * @return 转换后集合 */ public List<T> importExcel(String sheetName, InputStream is) throws Exception { this.type = Excel.Type.IMPORT; this.wb = WorkbookFactory.create(is); List<T> list = new ArrayList<T>(); Sheet sheet = null; if (StringUtils.isNotEmpty(sheetName)) { // 如果指定sheet名,则取指定sheet中的内容. sheet = wb.getSheet(sheetName); } else { // 如果传入的sheet名不存在则默认指向第1个sheet. sheet = wb.getSheetAt(0); } if (sheet == null) { throw new IOException("文件sheet不存在"); } int rows = sheet.getPhysicalNumberOfRows(); int lastRowNum = sheet.getLastRowNum(); if (rows > 0) { // 定义一个map用于存放excel列的序号和field. Map<String, Integer> cellMap = new HashMap<String, Integer>(); // 获取表头 Row heard = sheet.getRow(2); for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++) { Cell cell = heard.getCell(i); if (StringUtils.isNotNull(cell != null)) { String value = this.getCellValue(heard, i).toString(); cellMap.put(value, i); } else { cellMap.put(null, i); } } // 有数据时才处理 得到类的所有field. Field[] allFields = clazz.getDeclaredFields(); // 定义一个map用于存放列的序号和field. Map<Integer, Field> fieldsMap = new HashMap<Integer, Field>(); for (int col = 0; col < allFields.length; col++) { Field field = allFields[col]; Excel attr = field.getAnnotation(Excel.class); if (attr != null && (attr.type() == Type.ALL || attr.type() == type)) { // 设置类的私有字段属性可访问. field.setAccessible(true); Integer column = cellMap.get(attr.name()); fieldsMap.put(column, field); } } for (int i = 3; i < rows; i++) { // 从第2行开始取数据,默认第一行是表头. Row row = sheet.getRow(i); T entity = null; for (Map.Entry<Integer, Field> entry : fieldsMap.entrySet()) { Integer key = entry.getKey(); Object val = this.getCellValue(row, entry.getKey()); // 如果不存在实例则新建. entity = (entity == null ? clazz.newInstance() : entity); // 从map中得到对应列的field. Field field = fieldsMap.get(entry.getKey()); // 取得类型,并根据对象类型设置值. Class<?> fieldType = field.getType(); if (String.class == fieldType) { String s = Convert.toStr(val); if (StringUtils.endsWith(s, ".0")) { val = StringUtils.substringBefore(s, ".0"); } else { val = Convert.toStr(val); } } else if ((Integer.TYPE == fieldType) || (Integer.class == fieldType)) { val = Convert.toInt(val); } else if ((Long.TYPE == fieldType) || (Long.class == fieldType)) { val = Convert.toLong(val); } else if ((Double.TYPE == fieldType) || (Double.class == fieldType)) { val = Convert.toDouble(val); } else if ((Float.TYPE == fieldType) || (Float.class == fieldType)) { val = Convert.toFloat(val); } else if (BigDecimal.class == fieldType) { val = Convert.toBigDecimal(val); } else if (Date.class == fieldType) { if (val instanceof String) { val = DateUtils.parseDate(val); } else if (val instanceof Double) { val = DateUtil.getJavaDate((Double) val); } } if (StringUtils.isNotNull(fieldType)) { Excel attr = field.getAnnotation(Excel.class); String propertyName = field.getName(); if (StringUtils.isNotEmpty(attr.targetAttr())) { propertyName = field.getName() + "." + attr.targetAttr(); } else if (StringUtils.isNotEmpty(attr.readConverterExp())) { //p String readConverterExp = readDictDataConver(attr.readConverterExp()); val = reverseByExp(String.valueOf(val), readConverterExp); } ReflectUtils.invokeSetter(entity, propertyName, val); } } list.add(entity); } } return list; } /** * 对list数据源将其里面的数据导入到excel表单 * * @param list 导出数据集合 * @param sheetName 工作表的名称 * @return 结果 */ public AjaxResult exportExcel(List<T> list, String sheetName) { this.init(list, sheetName, Type.EXPORT); return exportExcel(); } /** * 对list数据源将其里面的数据导入到excel表单 * * @param sheetName 工作表的名称 * @return 结果 */ public AjaxResult importTemplateExcel(String sheetName) { this.init(null, sheetName, Type.IMPORT); return exportExcel(); } /** * 对list数据源将其里面的数据导入到excel表单 * * @return 结果 */ public AjaxResult exportExcel() { OutputStream out = null; try { // 取出一共有多少个sheet. double sheetNo = Math.ceil(list.size() / sheetSize); for (int index = 0; index <= sheetNo; index++) { createSheet(sheetNo, index); // 产生一行 Row row = sheet.createRow(0); int column = 0; // 写入各个字段的列头名称 for (Object[] os : fields) { //fields [excel,attr] 获取fields 对象数组的attr(注解) Excel excel = (Excel) os[1]; this.createCell(excel, row, column++); } if (Type.EXPORT.equals(type)) { fillExcelData(index, row); } } String filename = encodingFilename(sheetName); out = new FileOutputStream(getAbsoluteFile(filename)); wb.write(out); return AjaxResult.success(filename); } catch (Exception e) { log.error("导出Excel异常{}", e.getMessage()); throw new CustomException("导出Excel失败,请联系网站管理员!"); } finally { if (wb != null) { try { wb.close(); } catch (IOException e1) { e1.printStackTrace(); } } if (out != null) { try { out.close(); } catch (IOException e1) { e1.printStackTrace(); } } } } /** * 填充excel数据 * * @param index 序号 * @param row 单元格行 */ public void fillExcelData(int index, Row row) { int startNo = index * sheetSize; int endNo = Math.min(startNo + sheetSize, list.size()); for (int i = startNo; i < endNo; i++) { row = sheet.createRow(i + 1 - startNo); // 得到导出对象. T vo = (T) list.get(i); int column = 0; for (Object[] os : fields) { Field field = (Field) os[0]; Excel excel = (Excel) os[1]; // 设置实体类私有属性可访问 field.setAccessible(true); this.addCell(excel, row, vo, field, column++); } } } /** * 创建表格样式 * * @param wb 工作薄对象 * @return 样式列表 */ private Map<String, CellStyle> createStyles(Workbook wb) { // 写入各条记录,每条记录对应excel表中的一行 Map<String, CellStyle> styles = new HashMap<String, CellStyle>(); CellStyle style = wb.createCellStyle(); style.setAlignment(HorizontalAlignment.CENTER); style.setVerticalAlignment(VerticalAlignment.CENTER); style.setBorderRight(BorderStyle.THIN); style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex()); style.setBorderLeft(BorderStyle.THIN); style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex()); style.setBorderTop(BorderStyle.THIN); style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex()); style.setBorderBottom(BorderStyle.THIN); style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex()); Font dataFont = wb.createFont(); dataFont.setFontName("Arial"); dataFont.setFontHeightInPoints((short) 10); style.setFont(dataFont); styles.put("data", style); style = wb.createCellStyle(); style.cloneStyleFrom(styles.get("data")); style.setAlignment(HorizontalAlignment.CENTER); style.setVerticalAlignment(VerticalAlignment.CENTER); style.setFillForegroundColor(IndexedColors.GREY_50_PERCENT.getIndex()); style.setFillPattern(FillPatternType.SOLID_FOREGROUND); Font headerFont = wb.createFont(); headerFont.setFontName("Arial"); headerFont.setFontHeightInPoints((short) 10); headerFont.setBold(true); headerFont.setColor(IndexedColors.WHITE.getIndex()); style.setFont(headerFont); styles.put("header", style); return styles; } /** * 创建单元格 */ public Cell createCell(Excel attr, Row row, int column) { // 创建列 Cell cell = row.createCell(column); // 写入列信息 cell.setCellValue(attr.name()); setDataValidation(attr, row, column); cell.setCellStyle(styles.get("header")); return cell; } /** * 设置单元格信息 * * @param value 单元格值 * @param attr 注解相关 * @param cell 单元格信息 */ public void setCellVo(Object value, Excel attr, Cell cell) { if (ColumnType.STRING == attr.cellType()) { cell.setCellType(CellType.NUMERIC); cell.setCellValue(StringUtils.isNull(value) ? attr.defaultValue() : value + attr.suffix()); } else if (ColumnType.NUMERIC == attr.cellType()) { cell.setCellType(CellType.NUMERIC); cell.setCellValue(Integer.parseInt(value + "")); } } /** * 创建表格样式 */ public void setDataValidation(Excel attr, Row row, int column) { if (attr.name().indexOf("注:") >= 0) { sheet.setColumnWidth(column, 6000); } else { // 设置列宽 sheet.setColumnWidth(column, (int) ((attr.width() + 0.72) * 256)); row.setHeight((short) (attr.height() * 20)); } // 如果设置了提示信息则鼠标放上去提示. if (StringUtils.isNotEmpty(attr.prompt())) { // 这里默认设了2-101列提示. setXSSFPrompt(sheet, "", attr.prompt(), 1, 100, column, column); } // 如果设置了combo属性则本列只能选择不能输入 if (attr.combo().length > 0) { //hbt String[] combo = comboConver(attr.combo()); // 这里默认设了2-101列只能选择不能输入. setXSSFValidation(sheet, combo, 1, 100, column, column); } // 联动 if (StringUtils.isNotEmpty(attr.ganaged())) { List<String> provNameList = new ArrayList<>(); provNameList.add("夏(约前2070~前1600)"); provNameList.add("秦(前221~前206)"); Map<String, List<String>> siteMap = new HashMap<>(); siteMap.put("形成年代", provNameList); Sheet hideSheet = wb.createSheet("site");
// wb.setSheetHidden(wb.getSheetIndex(hideSheet), true);
int rowId = 0; Iterator<String> keyIterator = siteMap.keySet().iterator(); while (keyIterator.hasNext()) { String key = keyIterator.next(); List<String> son = siteMap.get(key); Row rowThis = hideSheet.createRow(rowId++); rowThis.createCell(0).setCellValue(key); for (int i = 1; i < provNameList.size() + 1; i++) { Row rowThisz = hideSheet.createRow(rowId++); Cell cell = rowThisz.createCell(i-1); cell.setCellValue(son.get(i - 1)); }
// rowThis.createCell(0).setCellValue(key);
// for (int i = 0; i < son.size(); i++) {
// Cell cell = rowThis.createCell(i + 1);
// cell.setCellValue(son.get(i));
// }
//添加名称管理器 Name name = wb.createName(); name.setNameName(key); String formula = "site!" + "$A$2:$A$3"; name.setRefersToFormula(formula); } setXSSFValidationIn(sheet, 1, 100, column, column); } } /** * 添加单元格 */ public Cell addCell(Excel attr, Row row, T vo, Field field, int column) { Cell cell = null; try { // 设置行高 row.setHeight((short) (attr.height() * 20)); // 根据Excel中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列. if (attr.isExport()) { // 创建cell cell = row.createCell(column); cell.setCellStyle(styles.get("data")); // 用于读取对象中的属性 Object value = getTargetValue(vo, field, attr); String dateFormat = attr.dateFormat(); String anoReadConverterExp = attr.readConverterExp(); //p String readConverterExp = readDictDataConver(anoReadConverterExp); if (StringUtils.isNotEmpty(dateFormat) && StringUtils.isNotNull(value)) { cell.setCellValue(DateUtils.parseDateToStr(dateFormat, (Date) value)); } else if (StringUtils.isNotEmpty(readConverterExp) && StringUtils.isNotNull(value)) { cell.setCellValue(convertByExp(String.valueOf(value), readConverterExp)); } else { // 设置列类型 setCellVo(value, attr, cell); } } } catch (Exception e) { log.error("导出Excel失败{}", e); } return cell; } /** * 设置 POI XSSFSheet 单元格提示 * * @param sheet 表单 * @param promptTitle 提示标题 * @param promptContent 提示内容 * @param firstRow 开始行 * @param endRow 结束行 * @param firstCol 开始列 * @param endCol 结束列 */ public void setXSSFPrompt(Sheet sheet, String promptTitle, String promptContent, int firstRow, int endRow, int firstCol, int endCol) { DataValidationHelper helper = sheet.getDataValidationHelper(); DataValidationConstraint constraint = helper.createCustomConstraint("DD1"); CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol); DataValidation dataValidation = helper.createValidation(constraint, regions); dataValidation.createPromptBox(promptTitle, promptContent); dataValidation.setShowPromptBox(true); sheet.addValidationData(dataValidation); } /** * 设置某些列的值只能输入预制的数据,显示下拉框. * * @param sheet 要设置的sheet. * @param textlist 下拉框显示的内容 * @param firstRow 开始行 * @param endRow 结束行 * @param firstCol 开始列 * @param endCol 结束列 * @return 设置好的sheet. */ public void setXSSFValidation(Sheet sheet, String[] textlist, int firstRow, int endRow, int firstCol, int endCol) { DataValidationHelper helper = sheet.getDataValidationHelper(); // 加载下拉列表内容 DataValidationConstraint constraint = helper.createExplicitListConstraint(textlist); // 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(firstRow, endRow, firstCol, endCol); // 数据有效性对象 DataValidation dataValidation = helper.createValidation(constraint, regions); // 处理Excel兼容性问题 if (dataValidation instanceof XSSFDataValidation) { dataValidation.setSuppressDropDownArrow(true); dataValidation.setShowErrorBox(true); } else { dataValidation.setSuppressDropDownArrow(false); } sheet.addValidationData(dataValidation); } public void setXSSFValidationIn(Sheet sheet, int firstRow, int endRow, int firstCol, int endCol) { DataValidationHelper helper = sheet.getDataValidationHelper(); DataValidationConstraint formulaListConstraint = helper.createFormulaListConstraint("INDIRECT($F2)"); // 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(firstRow, endRow, firstCol, endCol); // 数据有效性对象 DataValidation cacse = helper.createValidation(formulaListConstraint, regions); // 处理Excel兼容性问题 if (cacse instanceof XSSFDataValidation) { cacse.setSuppressDropDownArrow(true); cacse.setShowErrorBox(true); } else { cacse.setSuppressDropDownArrow(false); } sheet.addValidationData(cacse); } /** * 解析导出值 0=男,1=女,2=未知 * * @param propertyValue 参数值 * @param converterExp 翻译注解 * @return 解析后值 * @throws Exception */ public static String convertByExp(String propertyValue, String converterExp) throws Exception { try { String[] convertSource = converterExp.split(","); for (String item : convertSource) { String[] itemArray = item.split("="); if (itemArray[0].equals(propertyValue)) { return itemArray[1]; } } } catch (Exception e) { throw e; } return propertyValue; } /** * 反向解析值 男=0,女=1,未知=2 * * @param propertyValue 参数值 * @param converterExp 翻译注解 * @return 解析后值 * @throws Exception */ public static String reverseByExp(String propertyValue, String converterExp) throws Exception { try { String[] convertSource = converterExp.split(","); for (String item : convertSource) { String[] itemArray = item.split("="); if (itemArray[1].equals(propertyValue)) { return itemArray[0]; } } } catch (Exception e) { throw e; } return propertyValue; } /** * 编码文件名 */ public String encodingFilename(String filename) { filename = UUID.randomUUID().toString() + "_" + filename + ".xlsx"; return filename; } /** * 获取下载路径 * * @param filename 文件名称 */ public String getAbsoluteFile(String filename) { String downloadPath = RuoYiConfig.getDocumentPath() + "/" + filename; File desc = new File(downloadPath); if (!desc.getParentFile().exists()) { desc.getParentFile().mkdirs(); } return downloadPath; } /** * 获取bean中的属性值 * * @param vo 实体对象 * @param field 字段 * @param excel 注解 * @return 最终的属性值 * @throws Exception */ private Object getTargetValue(T vo, Field field, Excel excel) throws Exception { Object o = field.get(vo); if (StringUtils.isNotEmpty(excel.targetAttr())) { String target = excel.targetAttr(); if (target.indexOf(".") > -1) { String[] targets = target.split("[.]"); for (String name : targets) { o = getValue(o, name); } } else { o = getValue(o, target); } } return o; } /** * 以类的属性的get方法方法形式获取值 * * @param o * @param name * @return value * @throws Exception */ private Object getValue(Object o, String name) throws Exception { if (StringUtils.isNotEmpty(name)) { Class<?> clazz = o.getClass(); String methodName = "get" + name.substring(0, 1).toUpperCase() + name.substring(1); Method method = clazz.getMethod(methodName); o = method.invoke(o); } return o; } /** * 得到所有定义字段 */ private void createExcelField() { this.fields = new ArrayList<Object[]>(); List<Field> tempFields = new ArrayList<>(); tempFields.addAll(Arrays.asList(clazz.getSuperclass().getDeclaredFields())); tempFields.addAll(Arrays.asList(clazz.getDeclaredFields())); for (Field field : tempFields) { // 单注解 if (field.isAnnotationPresent(Excel.class)) { putToField(field, field.getAnnotation(Excel.class)); } // 多注解 if (field.isAnnotationPresent(Excels.class)) { Excels attrs = field.getAnnotation(Excels.class); Excel[] excels = attrs.value(); for (Excel excel : excels) { putToField(field, excel); } } } } /** * 放到字段集合中 */ private void putToField(Field field, Excel attr) { if (attr != null && (attr.type() == Type.ALL || attr.type() == type)) { this.fields.add(new Object[]{field, attr}); } } /** * 创建一个工作簿 */ public void createWorkbook() { //行访问窗口大小 this.wb = new SXSSFWorkbook(500); } /** * 创建工作表 * * @param sheetNo sheet数量 * @param index 序号 */ public void createSheet(double sheetNo, int index) { this.sheet = wb.createSheet(); this.styles = createStyles(wb); // 设置工作表的名称. if (sheetNo == 0) { wb.setSheetName(index, sheetName); } else { wb.setSheetName(index, sheetName + index); } } /** * 获取单元格值 * * @param row 获取的行 * @param column 获取单元格列号 * @return 单元格值 */ public Object getCellValue(Row row, int column) { if (row == null) { return row; } Object val = ""; try { Cell cell = row.getCell(column); if (cell != null) { if (cell.getCellTypeEnum() == CellType.NUMERIC || cell.getCellTypeEnum() == CellType.FORMULA) { val = cell.getNumericCellValue(); if (HSSFDateUtil.isCellDateFormatted(cell)) { val = DateUtil.getJavaDate((Double) val); // POI Excel 日期格式转换 } else { if ((Double) val % 1 > 0) { val = new DecimalFormat("0.00").format(val); } else { val = new DecimalFormat("0").format(val); } } } else if (cell.getCellTypeEnum() == CellType.STRING) { val = cell.getStringCellValue(); } else if (cell.getCellTypeEnum() == CellType.BOOLEAN) { val = cell.getBooleanCellValue(); } else if (cell.getCellTypeEnum() == CellType.ERROR) { val = cell.getErrorCellValue(); } } } catch (Exception e) { return val; } return val; } //读取内容转表达式 (如: 0=男,1=女,2=未知) public static String readDictDataConver(String anoForReadConver) { List<String> strList = new ArrayList<>(); StringBuilder sb = new StringBuilder(); List<SysDictData> sysDictData = dictConverUtil.iSysDictDataService.selectDictDataByType(anoForReadConver); if (StringUtils.isNotEmpty(sysDictData)) { for (SysDictData dictData : sysDictData ) { sb.append(dictData.getDictValue()) .append("=") .append(dictData.getDictLabel()) .append(","); } sb.deleteCharAt(sb.length() - 1); } String readConver = sb.toString(); return readConver; } //设置只能选择不能输入的列内容. public static String[] comboConver(String[] anoCombo) { StringBuilder sb = new StringBuilder(); List<String> strList = new ArrayList<>(); List<SysDictData> sysDictData = dictConverUtil.iSysDictDataService.selectDictDataByType(anoCombo[0]); if (StringUtils.isNotEmpty(sysDictData)) { for (SysDictData dictData : sysDictData ) { sb.append(dictData.getDictLabel()).append(","); } sb.deleteCharAt(sb.length() - 1); strList.add(sb.toString()); } String[] combo = strList.toArray(new String[strList.size()]); return combo; }
}
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