expert_management.git

文件名从 ruoyi/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java 修改
			@@ -1,875 +1,875 @@
			package com.ruoyi.common.utils.poi;

			import java.io.File;
			import java.io.FileOutputStream;
			import java.io.IOException;
			import java.io.InputStream;
			import java.io.OutputStream;
			import java.lang.reflect.Field;
			import java.lang.reflect.Method;
			import java.math.BigDecimal;
			import java.text.DecimalFormat;
			import java.util.ArrayList;
			import java.util.Arrays;
			import java.util.Comparator;
			import java.util.Date;
			import java.util.HashMap;
			import java.util.List;
			import java.util.Map;
			import java.util.UUID;
			import java.util.stream.Collectors;
			import org.apache.poi.hssf.usermodel.HSSFDateUtil;
			import org.apache.poi.ss.usermodel.BorderStyle;
			import org.apache.poi.ss.usermodel.Cell;
			import org.apache.poi.ss.usermodel.CellStyle;
			import org.apache.poi.ss.usermodel.CellType;
			import org.apache.poi.ss.usermodel.DataValidation;
			import org.apache.poi.ss.usermodel.DataValidationConstraint;
			import org.apache.poi.ss.usermodel.DataValidationHelper;
			import org.apache.poi.ss.usermodel.DateUtil;
			import org.apache.poi.ss.usermodel.FillPatternType;
			import org.apache.poi.ss.usermodel.Font;
			import org.apache.poi.ss.usermodel.HorizontalAlignment;
			import org.apache.poi.ss.usermodel.IndexedColors;
			import org.apache.poi.ss.usermodel.Row;
			import org.apache.poi.ss.usermodel.Sheet;
			import org.apache.poi.ss.usermodel.VerticalAlignment;
			import org.apache.poi.ss.usermodel.Workbook;
			import org.apache.poi.ss.usermodel.WorkbookFactory;
			import org.apache.poi.ss.util.CellRangeAddressList;
			import org.apache.poi.xssf.streaming.SXSSFWorkbook;
			import org.apache.poi.xssf.usermodel.XSSFDataValidation;
			import org.slf4j.Logger;
			import org.slf4j.LoggerFactory;
			import com.ruoyi.common.core.text.Convert;
			import com.ruoyi.common.exception.CustomException;
			import com.ruoyi.common.utils.DateUtils;
			import com.ruoyi.common.utils.StringUtils;
			import com.ruoyi.common.utils.reflect.ReflectUtils;
			import com.ruoyi.framework.aspectj.lang.annotation.Excel;
			import com.ruoyi.framework.aspectj.lang.annotation.Excel.ColumnType;
			import com.ruoyi.framework.aspectj.lang.annotation.Excel.Type;
			import com.ruoyi.framework.aspectj.lang.annotation.Excels;
			import com.ruoyi.framework.config.RuoYiConfig;
			import com.ruoyi.framework.web.domain.AjaxResult;

			/**
			* Excel相关处理
			*
			* @author ruoyi
			*/
			public class ExcelUtil<T>
			{
			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 = 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();

			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(0);
			for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++)
			{
			Cell cell = heard.getCell(i);
			if (StringUtils.isNotNull(cell))
			{
			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 = 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<Integer, Field> entry : fieldsMap.entrySet())
			{
			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()))
			{
			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 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)
			{
			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)
			{
			// 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);
			String dateFormat = attr.dateFormat();
			String readConverterExp = attr.readConverterExp();
			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);
			}

			/**
			* 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.getDownloadPath() + 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);
			}
			}
			}
			this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList());
			}

			/**
			* 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 (StringUtils.isNotNull(cell))
			{
			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;
			}
			package com.ruoyi.common.utils.poi;

			import java.io.File;
			import java.io.FileOutputStream;
			import java.io.IOException;
			import java.io.InputStream;
			import java.io.OutputStream;
			import java.lang.reflect.Field;
			import java.lang.reflect.Method;
			import java.math.BigDecimal;
			import java.text.DecimalFormat;
			import java.util.ArrayList;
			import java.util.Arrays;
			import java.util.Comparator;
			import java.util.Date;
			import java.util.HashMap;
			import java.util.List;
			import java.util.Map;
			import java.util.UUID;
			import java.util.stream.Collectors;
			import org.apache.poi.hssf.usermodel.HSSFDateUtil;
			import org.apache.poi.ss.usermodel.BorderStyle;
			import org.apache.poi.ss.usermodel.Cell;
			import org.apache.poi.ss.usermodel.CellStyle;
			import org.apache.poi.ss.usermodel.CellType;
			import org.apache.poi.ss.usermodel.DataValidation;
			import org.apache.poi.ss.usermodel.DataValidationConstraint;
			import org.apache.poi.ss.usermodel.DataValidationHelper;
			import org.apache.poi.ss.usermodel.DateUtil;
			import org.apache.poi.ss.usermodel.FillPatternType;
			import org.apache.poi.ss.usermodel.Font;
			import org.apache.poi.ss.usermodel.HorizontalAlignment;
			import org.apache.poi.ss.usermodel.IndexedColors;
			import org.apache.poi.ss.usermodel.Row;
			import org.apache.poi.ss.usermodel.Sheet;
			import org.apache.poi.ss.usermodel.VerticalAlignment;
			import org.apache.poi.ss.usermodel.Workbook;
			import org.apache.poi.ss.usermodel.WorkbookFactory;
			import org.apache.poi.ss.util.CellRangeAddressList;
			import org.apache.poi.xssf.streaming.SXSSFWorkbook;
			import org.apache.poi.xssf.usermodel.XSSFDataValidation;
			import org.slf4j.Logger;
			import org.slf4j.LoggerFactory;
			import com.ruoyi.common.annotation.Excel;
			import com.ruoyi.common.annotation.Excel.ColumnType;
			import com.ruoyi.common.annotation.Excel.Type;
			import com.ruoyi.common.annotation.Excels;
			import com.ruoyi.common.config.RuoYiConfig;
			import com.ruoyi.common.core.domain.AjaxResult;
			import com.ruoyi.common.core.text.Convert;
			import com.ruoyi.common.exception.CustomException;
			import com.ruoyi.common.utils.DateUtils;
			import com.ruoyi.common.utils.StringUtils;
			import com.ruoyi.common.utils.reflect.ReflectUtils;

			/**
			* Excel相关处理
			*
			* @author ruoyi
			*/
			public class ExcelUtil<T>
			{
			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 = 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();

			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(0);
			for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++)
			{
			Cell cell = heard.getCell(i);
			if (StringUtils.isNotNull(cell))
			{
			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 = 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<Integer, Field> entry : fieldsMap.entrySet())
			{
			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()))
			{
			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 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)
			{
			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)
			{
			// 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);
			String dateFormat = attr.dateFormat();
			String readConverterExp = attr.readConverterExp();
			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);
			}

			/**
			* 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.getDownloadPath() + 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);
			}
			}
			}
			this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList());
			}

			/**
			* 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 (StringUtils.isNotNull(cell))
			{
			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;
			}
			}