From da6e29e14c324c147aee81bf473e635f356cc0f4 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=E5=B0=91=E5=B9=B4=E6=A2=A6=E4=B8=8E=E7=A0=96?= <2847127106@qq.com> Date: Sat, 10 Aug 2024 10:21:39 +0800 Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9Excel=E5=B7=A5=E5=85=B7?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- pom.xml | 2 +- .../muyu/common/core/annotation/Excel.java | 10 + .../common/core/utils/poi/ExcelUtils.java | 810 ++++++++++++++++++ 3 files changed, 821 insertions(+), 1 deletion(-) create mode 100644 src/main/java/com/muyu/common/core/utils/poi/ExcelUtils.java diff --git a/pom.xml b/pom.xml index c316181..12c112c 100644 --- a/pom.xml +++ b/pom.xml @@ -172,7 +172,7 @@ com.dtflys.forest - forest-spring-boot-starter + forest-spring-boot3-starter 1.5.36 diff --git a/src/main/java/com/muyu/common/core/annotation/Excel.java b/src/main/java/com/muyu/common/core/annotation/Excel.java index 36180e5..eb7928a 100644 --- a/src/main/java/com/muyu/common/core/annotation/Excel.java +++ b/src/main/java/com/muyu/common/core/annotation/Excel.java @@ -148,6 +148,16 @@ public @interface Excel { */ Type type () default Type.ALL; + /** + * 可执行的反射方法值为1个 + */ + public String invokeMethod() default ""; + + /** + * 可执行的反射类 从SpringIoc容器当中取值 + */ + public Class invokeClass() default String.class; + public enum Type { ALL(0), EXPORT(1), IMPORT(2); private final int value; diff --git a/src/main/java/com/muyu/common/core/utils/poi/ExcelUtils.java b/src/main/java/com/muyu/common/core/utils/poi/ExcelUtils.java new file mode 100644 index 0000000..41ce85a --- /dev/null +++ b/src/main/java/com/muyu/common/core/utils/poi/ExcelUtils.java @@ -0,0 +1,810 @@ +package com.muyu.common.core.utils.poi; + + + +import com.muyu.common.core.annotation.Excel; +import com.muyu.common.core.annotation.Excel.ColumnType; +import com.muyu.common.core.annotation.Excel.Type; +import com.muyu.common.core.annotation.Excels; +import com.muyu.common.core.exception.UtilException; +import com.muyu.common.core.text.Convert; +import com.muyu.common.core.utils.DateUtils; +import com.muyu.common.core.utils.SpringUtils; +import com.muyu.common.core.utils.StringUtils; +import com.muyu.common.core.utils.file.FileTypeUtils; +import com.muyu.common.core.utils.file.ImageUtils; +import com.muyu.common.core.utils.reflect.ReflectUtils; +import lombok.extern.log4j.Log4j2; +import org.apache.commons.lang3.ArrayUtils; +import org.apache.commons.lang3.RegExUtils; +import org.apache.commons.lang3.reflect.FieldUtils; +import org.apache.poi.hssf.usermodel.HSSFDateUtil; +import org.apache.poi.ss.usermodel.*; +import org.apache.poi.ss.util.CellRangeAddress; +import org.apache.poi.ss.util.CellRangeAddressList; +import org.apache.poi.util.IOUtils; +import org.apache.poi.xssf.streaming.SXSSFWorkbook; +import org.apache.poi.xssf.usermodel.XSSFClientAnchor; +import org.apache.poi.xssf.usermodel.XSSFDataValidation; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import jakarta.servlet.http.HttpServletResponse; +import org.springframework.web.multipart.MultipartFile; + +import java.io.*; +import java.lang.reflect.Field; +import java.lang.reflect.Method; +import java.lang.reflect.ParameterizedType; +import java.math.BigDecimal; +import java.text.DecimalFormat; +import java.time.LocalDate; +import java.time.LocalDateTime; +import java.util.*; +import java.util.stream.Collectors; + +/** + * Excel相关处理 + */ +@Log4j2 +public class ExcelUtils +{ + + /** + * Excel sheet最大行数，默认65536 + */ + public static final int SHEET_SIZE = 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 styles; + + /** + * 导入导出数据列表 + */ + private List list; + + /** + * 注解列表 + */ + private List fields; + + /** + * 实体对象 + */ + public Class clazz; + + public ExcelUtils(Class clazz) { + this.clazz = clazz; + } + + public void init(List list, String sheetName, Type type) { + if (list == null) { + list = new ArrayList<>(); + } + this.list = list; + this.sheetName = sheetName; + this.type = type; + createExcelField(); + createWorkbook(); + } + + /** + * 导入Excel 文件 + * 对excel表单默认第一个索引名转换成list + * + * @param file 导入的文件 + * @return 转换后集合 + */ + public List importExcel(MultipartFile file) throws Exception { + return importExcel(StringUtils.EMPTY, file); + } + + /** + * 对excel表单指定表格索引名转换成list + * + * @param sheetName 表格索引名 + * @param file 导入的文件 + * @return 转换后集合 + */ + public List importExcel(String sheetName,MultipartFile file) throws Exception { + InputStream is = file.getInputStream(); + this.type = Type.IMPORT; + this.wb = WorkbookFactory.create(is); + List list = new ArrayList<>(); + Sheet sheet; + 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(); + + if (rows > 0) { + // 定义一个map用于存放excel列的序号和field. + Map cellMap = new HashMap<>(); + // 获取表头 + Row heard = sheet.getRow(0); + for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++) { + Cell cell = heard.getCell(i); + if (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 fieldsMap = new HashMap<>(); + for (Field field : allFields) { + 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()); + + //模板名称检测 + if(column == null){ + System.out.println("模板错误:Excel表头和项目里面设置的表头["+attr.name()+"]不一致,请检查!"); + return new ArrayList<>(); + } + + fieldsMap.put(column, field); + } + } + for (int i = 1; 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 entry : fieldsMap.entrySet()) { + if (entry.getKey() == null){ + continue; + } + 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 { + String dateFormat = field.getAnnotation(Excel.class).dateFormat(); + if (StringUtils.isNotEmpty(dateFormat)) { + val = DateUtils.parseDateToStr(dateFormat, (Date) val); + } 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); + } + } + //模板检测判断 + if (val==null){ + System.out.println("模板错误：第"+(i+1)+"行,第"+(entry.getKey()+1)+"列，Excel的数据格式和数据库格式不一致！"); + return new ArrayList<>(); + } + + 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())) { + val = reverseByExp(String.valueOf(val), attr.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 response 返回数据 + * @param list 导出数据集合 + * @param sheetName 工作表的名称 + */ + public void exportExcel(HttpServletResponse response, List list, String sheetName){ + response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); + response.setCharacterEncoding("utf-8"); + this.init(list, sheetName, Type.EXPORT); + writeSheet(); + exportExcel(response); + } + + /** + * 对list数据源将其里面的数据导入到excel表单 + */ + public void exportExcel(HttpServletResponse response){ + try{ + wb.write(response.getOutputStream()); + } catch (Exception e){ + log.error("导出Excel异常{}", e.getMessage()); + } finally { + IOUtils.closeQuietly(wb); + } + } + + /** + * 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 String exportExcel(List 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 String importTemplateExcel(String sheetName) { + this.init(null, sheetName, Type.IMPORT); + return exportExcel(); + } + + /** + * 写入sheet数据 + */ + public void writeSheet(){ + // 取出一共有多少个sheet. + double sheetNo = Math.ceil(list.size() / SHEET_SIZE); + 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) { + Excel excel = (Excel) os[1]; + this.createCell(excel, row, column++); + } + if (Type.EXPORT.equals(type)) { + fillExcelData(index, row); + } + } + } + + /** + * 对list数据源将其里面的数据导入到excel表单 + * + * @return 结果 + */ + public String exportExcel() { + OutputStream out = null; + try { + writeSheet(); + String filename = encodingFilename(sheetName); + out = new FileOutputStream(getAbsoluteFile(filename)); + wb.write(out); + return filename; + } catch (Exception e) { + log.error("导出Excel异常{}", e.getMessage()); + e.printStackTrace(); + } finally { + try { + if (wb != null) { + wb.close(); + } + if (out != null) { + out.close(); + } + } catch (IOException e1) { + e1.printStackTrace(); + } + } + return ""; + } + + /** + * 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 * SHEET_SIZE; + int endNo = Math.min(startNo + SHEET_SIZE, 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 createStyles(Workbook wb) { + // 写入各条记录,每条记录对应excel表中的一行 + Map styles = new HashMap(); + 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 (Excel.ColumnType.STRING == attr.cellType()) { + cell.setCellType(CellType.NUMERIC); + cell.setCellValue(value == null ? attr.defaultValue() : value + attr.suffix()); + } else if (Excel.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) { + // 这里默认设了2-101列只能选择不能输入. + setXSSFValidation(sheet, attr.combo(), 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); + //时间类型格式化 + String dateFormat = attr.dateFormat(); + //读取表达式 + String readConverterExp = attr.readConverterExp(); + //分隔符 + String splitStr = attr.separator(); + //反射对象 + Class invokeClass = attr.invokeClass(); + //反射方法名称 + String invokeMethod = attr.invokeMethod(); + if (StringUtils.isNotEmpty(dateFormat) && value != null) { + cell.setCellValue(DateUtils.parseDateToStr(dateFormat, (Date) value)); + } else if (StringUtils.isNotEmpty(readConverterExp) && value != null) { + // 判断是否有分隔符 + if (StringUtils.isNotEmpty(splitStr)){ + StringBuilder cellValue = new StringBuilder(); + String valueStr = String.valueOf(value); + String[] valueStrSplit = valueStr.split(splitStr); + int valueStrSplitLength = valueStrSplit.length; + for (int i = 0; ; i++) { + cellValue.append(convertByExp(valueStrSplit[i], readConverterExp)); + if (i == valueStrSplitLength-1){ + break; + } + cellValue.append(","); + } + cell.setCellValue(cellValue.toString()); + } else { + cell.setCellValue(convertByExp(String.valueOf(value), readConverterExp)); + } + + } + // 判断是否需要取值 + else if((!invokeClass.getName().equals(String.class.getName())) && StringUtils.isNotEmpty(invokeMethod)){ + Object bean = SpringUtils.getBean(invokeClass); + Method thisMethod = null; + Method[] methods = invokeClass.getMethods(); + for (Method method : methods) { + if (method.getName().equals(invokeMethod)){ + thisMethod = method; + continue; + } + } + cell.setCellValue(thisMethod.invoke(bean,value).toString()); + } 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); + } + + /** + * 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 = System.getProperty("user.dir") + File.separator + 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<>(); + List 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() { + 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; + } +}