工具类Excel相关处理

package com.jyc.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.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.Set;
import java.util.UUID;
import java.util.stream.Collectors;

import com.jyc.common.core.text.Convert;
import com.jyc.common.exception.CustomException;
import com.jyc.common.utils.DateUtils;
import com.jyc.common.utils.DictUtils;
import com.jyc.common.utils.StringUtils;
import com.jyc.common.utils.file.FileTypeUtils;
import com.jyc.common.utils.file.ImageUtils;
import com.jyc.common.utils.reflect.ReflectUtils;
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.ClientAnchor;
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.Drawing;
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.XSSFClientAnchor;
import org.apache.poi.xssf.usermodel.XSSFDataValidation;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.jyc.common.annotation.Excel;
import com.jyc.common.annotation.Excel.ColumnType;
import com.jyc.common.annotation.Excel.Type;
import com.jyc.common.annotation.Excels;
import com.jyc.common.config.RuoYiConfig;
import com.jyc.common.core.domain.AjaxResult;

/**
 * Excel相关处理
 * 
 * @author jianyongchao
 */
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;

    /**
     * 最大高度
     */
    private short maxHeight;

    /**
     * 统计列表
     */
    private Map<Integer, Double> statistics = new HashMap<Integer, Double>();
    
    /**
     * 数字格式
     */
    private static final DecimalFormat DOUBLE_FORMAT = new DecimalFormat("######0.00");
    
    /**
     * 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());
                    if (column != null)                    {                        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);
                if(row == null)                {                    

continue;
                }                
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
                        {                            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) && StringUtils.isNumeric(Convert.toStr(val)))                    {                        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);
                        }                    }                    

else if (Boolean.TYPE == fieldType || Boolean.class == fieldType)                    {                        val = Convert.

toBool(val, false);
                    }                    
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(Convert.toStr(val), attr.readConverterExp(), attr.separator());
                        }                        
else if (StringUtils.isNotEmpty(attr.dictType()))                        {                            val = 

reverseDictByExp(Convert.toStr(val), attr.dictType(), attr.separator());
                        }                        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);
                    addStatisticsRow();
                }            }            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);

        style = wb.createCellStyle();
        style.setAlignment(HorizontalAlignment.CENTER);
        style.setVerticalAlignment(VerticalAlignment.CENTER);
        Font totalFont = wb.createFont();
        totalFont.setFontName("Arial");
        totalFont.setFontHeightInPoints((short) 10);
        style.setFont(totalFont);
        styles.put("total", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(HorizontalAlignment.LEFT);
        styles.put("data1", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(HorizontalAlignment.CENTER);
        styles.put("data2", style);

        style = wb.createCellStyle();
        style.cloneStyleFrom(styles.get("data"));
        style.setAlignment(HorizontalAlignment.RIGHT);
        styles.put("data3", 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.setCellValue(StringUtils.

isNull(value) ? attr.defaultValue() : value + attr.suffix());
        }        
else if (ColumnType.NUMERIC == attr.cellType())        {            

if (StringUtils.isNotNull(value))            {                cell.setCellValue(StringUtils.

contains(Convert.toStr(value), ".") ? Convert.toDouble(value) : Convert.toInt(value));
            }        }        

else if (ColumnType.IMAGE == attr.cellType())        {            ClientAnchor anchor = 

new XSSFClientAnchor(0, 0, 0, 0, (short) cell.getColumnIndex(), cell.getRow().getRowNum(), (short) (cell.getColumnIndex() + 1),
                    cell.getRow().getRowNum() + 1);
            String imagePath = Convert.toStr(value);
            if (StringUtils.isNotEmpty(imagePath))            {                

byte[] data = ImageUtils.getImage(imagePath);
getDrawingPatriarch(cell.getSheet()).createPicture(anchor,
                        cell.getSheet().getWorkbook().addPicture(data, getImageType(data)));
            }        }    }        



/**
     * 获取画布
*/
public static Drawing<?> getDrawingPatriarch(Sheet sheet)    {        

if (sheet.getDrawingPatriarch() == null)        {            sheet.createDrawingPatriarch()

;
        }        
return sheet.getDrawingPatriarch();
    }    

/**
     * 获取图片类型,设置图片插入类型
*/
public int getImageType(byte[] value)    {        String type = FileTypeUtils.

getFileExtendName(value);
        if ("JPG".equalsIgnoreCase(type))        {            

return Workbook.PICTURE_TYPE_JPEG;
        }        
else if ("PNG".equalsIgnoreCase(type))        {            

return Workbook.PICTURE_TYPE_PNG;
        }        
return Workbook.PICTURE_TYPE_JPEG;
    }    

/**
     * 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));
        }        
// 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(maxHeight);
// 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);
                int align = attr.align().value();
                cell.setCellStyle(styles.get("data" + (align >= 1 && align <= 3 ? align : "")));

// 用于读取对象中的属性
                Object value = getTargetValue(vo, field, attr);
                String dateFormat = attr.dateFormat();
                String readConverterExp = attr.readConverterExp();
                String separator = attr.separator();
                String dictType = attr.dictType();
                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(Convert.toStr(value), readConverterExp, separator));
                }                
else if (StringUtils.isNotEmpty(dictType) && StringUtils.isNotNull(value))                {                    cell.setCellValue(

convertDictByExp(Convert.toStr(value), dictType, separator));
                }                
else if (value instanceof BigDecimal && -1 != attr.scale())                {                    cell.setCellValue((((BigDecimal) value).setScale(attr.scale()

, attr.roundingMode())).toString());
                }                
else
                {                    
// 设置列类型
                    setCellVo(value, attr, cell);
                }                addStatisticsData(column
, Convert.toStr(value), attr);
            }        }        

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
* @param separator 分隔符
* @return 解析后值
*/
public static String convertByExp(String propertyValue, String converterExp, String separator)    {        StringBuilder propertyString = 

new StringBuilder();
        String[] convertSource = converterExp.split(",");
        for (String item : convertSource)        {            String[] itemArray = item.split(

"=");
            if (StringUtils.containsAny(separator, propertyValue))            {                

for (String value : propertyValue.split(separator))                {                    

if (itemArray[0].equals(value))                    {                        propertyString.append(itemArray[

1] + separator);
                        break;
                    }                }            }            


else
            {                
if (itemArray[0].equals(propertyValue))                {                    

return itemArray[1];
                }            }        }        


return StringUtils.stripEnd(propertyString.toString(), separator);
    }    

/**
     * 反向解析值 男=0,女=1,未知=2
     * 
     * @param propertyValue 参数值
* @param converterExp 翻译注解
* @param separator 分隔符
* @return 解析后值
*/
public static String reverseByExp(String propertyValue, String converterExp, String separator)    {        StringBuilder propertyString = 

new StringBuilder();
        String[] convertSource = converterExp.split(",");
        for (String item : convertSource)        {            String[] itemArray = item.split(

"=");
            if (StringUtils.containsAny(separator, propertyValue))            {                

for (String value : propertyValue.split(separator))                {                    

if (itemArray[1].equals(value))                    {                        propertyString.append(itemArray[

0] + separator);
                        break;
                    }                }            }            


else
            {                
if (itemArray[1].equals(propertyValue))                {                    

return itemArray[0];
                }            }        }        


return StringUtils.stripEnd(propertyString.toString(), separator);
    }        

/**
     * 解析字典值
* 
     * @param dictValue 字典值
* @param dictType 字典类型
* @param separator 分隔符
* @return 字典标签
*/
public static String convertDictByExp(String dictValue, String dictType, String separator)    {        

return DictUtils.getDictLabel(dictType, dictValue, separator);
    }    

/**
     * 反向解析值字典值
* 
     * @param dictLabel 字典标签
* @param dictType 字典类型
* @param separator 分隔符
* @return 字典值
*/
public static String reverseDictByExp(String dictLabel, String dictType, String separator)    {        

return DictUtils.getDictValue(dictType, dictLabel, separator);
    }        

/**
     * 合计统计信息
*/
private void addStatisticsData(Integer index, String text, Excel entity)    {        

if (entity != null && entity.isStatistics())        {            Double temp = 

0D;
            if (!statistics.containsKey(index))            {                

statistics.put(index, temp);
            }            
try
            {                temp = Double.
valueOf(text);
            }            
catch (NumberFormatException e)            {            }            


statistics.put(index, statistics.get(index) + temp);
        }    }    


/**
     * 创建统计行
*/
public void addStatisticsRow()    {        

if (statistics.size() > 0)        {            Cell cell = 

null;
            Row row = sheet.createRow(sheet.getLastRowNum() + 1);
            Set<Integer> keys = statistics.keySet();
            cell = row.createCell(0);
            cell.setCellStyle(styles.get("total"));
            cell.setCellValue("合计");

            for (Integer key : keys)            {                cell = row.createCell(key)

;
                cell.setCellStyle(styles.get("total"));
                cell.setCellValue(DOUBLE_FORMAT.format(statistics.get(key)));
            }            
statistics.clear();
        }    }    


/**
     * 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.isNotNull(o) && StringUtils.isNotEmpty(name))        {            Class<?> clazz = o.getClass()

;
            Field field = clazz.getDeclaredField(name);
            field.setAccessible(true);
            o = field.get(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());
        this.maxHeight = getRowHeight();
    }        

/**
     * 根据注解获取最大行高
*/
public short getRowHeight()    {        

double maxHeight = 0;
        for (Object[] os : this.fields)        {            

Excel excel = (Excel) os[1];
            maxHeight = maxHeight > excel.height() ? maxHeight : excel.height();
        }        
return (short) (maxHeight * 20);
    }    

/**
     * 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.getCellType() == CellType.NUMERIC || cell.getCellType() == CellType.FORMULA)                {                    val = cell.getNumericCellValue()

;
                    if (DateUtil.isCellDateFormatted(cell))                    {                        val = DateUtil.

getJavaDate((Double) val); // POI Excel 日期格式转换
                    }                    
else
                    {                        
if ((Double) val % 1 != 0)                        {                            val = 

new BigDecimal(val.toString());
                        }                        
else
                        {                            val = 
new DecimalFormat("0").format(val);
                        }                    }                }                


else if (cell.getCellType() == CellType.STRING)                {                    val = cell.getStringCellValue()

;
                }                
else if (cell.getCellType() == CellType.BOOLEAN)                {                    val = cell.getBooleanCellValue()

;
                }                
else if (cell.getCellType() == CellType.ERROR)                {                    val = cell.getErrorCellValue()

;
                }            }        }        



catch (Exception e)        {            

return val;
        }        
return val;
    }}