若依 ruoyi poi Excel归并行的导入

吴旭华 · 2024-7-28 12:54:25

本文仅针对文字相干的归并做了处理，图片归并及保存需要另做处理！！

目的：Excel归并行内容的导入

结果：

1. ExcelUtil.java 类，新增方法：判断是否是归并行

/**
* 新增合并行相关代码：判断是否是合并行
*
* @param sheet
* @param row
* @param column
* @return
*/
private boolean isMergedRow(Sheet sheet, int row, int column) {
int sheetMergeCount = sheet.getNumMergedRegions();//当前表格(sheet)中，所有合单元格总数
//遍历所有合并单元格
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress cellAddresses = sheet.getMergedRegion(i);//当前合并单元格对象
int firstColumn = cellAddresses.getFirstColumn();//当前合并单元格的首列
int lastColumn = cellAddresses.getLastColumn();//当前合并单元格的末列
int firstRow = cellAddresses.getFirstRow();//当前合并单元格的首行
int lastRow = cellAddresses.getLastRow();//当前合并单元格的末行
//指定的行包含在合并单元格中
if (row >= firstRow && row <= lastRow) {
//指定的列包含在合并单元格中
if (column >= firstColumn && column <= lastColumn) {
return true;
}
}
}
return false;
}

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2. ExcelUtil.java 类，新增方法：获取归并行单位格数据
思绪：
POI对于Excel的处理：归并行中只有首列能获取到值非首列的其他列数据默认是空。由于是归并行，则可以以为归并行内所有列的数据都与归并行的首列数据雷同。
所以，以下代码中，判断该列如果包含在归并行内，则该列值默认赋值为所在归并行的首列值。
图1 Excel中的2/3/4行内的归并行内容雷同：

POI对Excel处理时，默认获取到的值大概如图2：下面代码则在图2逻辑上对3/4行的空内容做赋值操纵

/**
* 新增合并行相关代码：获取合并行的数据
*
* @param sheet
* @param row
* @param column
* @return
*/
private String getMergedRegionValue(Sheet sheet, int row, int column) {
// 获得该sheet所有合并单元格数量
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
// 获得合并区域
CellRangeAddress cellAddresses = sheet.getMergedRegion(i);
int firstColumn = cellAddresses.getFirstColumn();
int lastColumn = cellAddresses.getLastColumn();
int firstRow = cellAddresses.getFirstRow();
int lastRow = cellAddresses.getLastRow();
/*判断传入的单元格的行号列号是否在合并单元格的范围内，
如果在合并单元格的范围内，择返回合并区域的首单元格格值
*/
if (row >= firstRow && row <= lastRow) {
if (column >= firstColumn && column <= lastColumn) {
Row firRow = sheet.getRow(firstRow);
/* 合并行使用的获取单元格内容方法
Cell firCell = firRow.getCell(firstColumn);
return getCellValue(firCell);
*/
return getCellValue(firRow, firstColumn).toString();//改为使用若依自带获取单元格内容方法
}
}
}
// 如果该单元格行号列号不在任何一个合并区域，则返回null
return null;
}

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3. ExcelUtil.java的importExcel()方法中遍历行内所有单位格内容下，新增：归并行的判断和其内单位格内容获取

// ============== 新增合并行相关代码块 ================
// 判断是否合并行 isMergedRow(sheet, rowNum, column)：是合并行，则获取合并行数据重新赋值给当前列
if (isMergedRow(sheet, i, entry.getKey())) val = getMergedRegionValue(sheet, i, entry.getKey());
// ============== 新增合并行相关代码块 ================

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importExcel()方法完整代码

/**
* 对excel表单指定表格索引名转换成list
*
* @param sheetName 表格索引名
* @param titleNum 标题占用行数
* @param is 输入流
* @return 转换后集合
*/
public List<T> importExcel(String sheetName, InputStream is, int titleNum) throws Exception
{
this.type = Type.IMPORT;
this.wb = WorkbookFactory.create(is);
List<T> list = new ArrayList<T>();
// 如果指定sheet名,则取指定sheet中的内容否则默认指向第1个sheet
Sheet sheet = StringUtils.isNotEmpty(sheetName) ? wb.getSheet(sheetName) : wb.getSheetAt(0);
if (sheet == null)
{
throw new IOException("文件sheet不存在");
}
boolean isXSSFWorkbook = !(wb instanceof HSSFWorkbook);
//获取文档指定sheet中所有图片：图片位置、文件流
Map<String, PictureData> pictures;
if (isXSSFWorkbook)
{
pictures = getSheetPictures07((XSSFSheet) sheet, (XSSFWorkbook) wb);
}
else
{
pictures = getSheetPictures03((HSSFSheet) sheet, (HSSFWorkbook) wb);
}
// 获取最后一个非空行的行下标，比如总行数为n，则返回的为n-1
int rows = sheet.getLastRowNum();
if (rows > 0)
{
// 定义一个map用于存放excel列的序号和field.
Map<String, Integer> cellMap = new HashMap<String, Integer>();
// 获取表头
Row heard = sheet.getRow(titleNum);
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.
List<Object[]> fields = this.getFields();
Map<Integer, Object[]> fieldsMap = new HashMap<Integer, Object[]>();
for (Object[] objects : fields)
{
Excel attr = (Excel) objects[1];
Integer column = cellMap.get(attr.name());
if (column != null)
{
fieldsMap.put(column, objects);
}
}
//遍历每一行
for (int i = titleNum + 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);
// 判断当前行是否是空行
if (isRowEmpty(row))
{
continue;
}
T entity = null;
//遍历当前行所有列逐列字段值获取并赋值给entity对象的各属性
for (Map.Entry<Integer, Object[]> entry : fieldsMap.entrySet())
{
Object val = this.getCellValue(row, entry.getKey());//获取当前列默认值
// ============== 新增合并行相关代码块 ================
// 判断是否合并行 isMergedRow(sheet, rowNum, column)：是合并行，则获取合并行首列数据重新赋值给当前列
if (isMergedRow(sheet, i, entry.getKey())) val = getMergedRegionValue(sheet, i, entry.getKey());
// ============== 新增合并行相关代码块 ================
// 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 = (Field) entry.getValue()[0];
Excel attr = (Excel) entry.getValue()[1];
// 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 = parseDateToStr(dateFormat, 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) && StringUtils.isNumeric(Convert.toStr(val)))
{
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))
{
String propertyName = field.getName();
if (StringUtils.isNotEmpty(attr.targetAttr()))
{
propertyName = field.getName() + "." + attr.targetAttr();
}
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());
}
else if (!attr.handler().equals(ExcelHandlerAdapter.class))
{
val = dataFormatHandlerAdapter(val, attr, null);
}
else if (ColumnType.IMAGE == attr.cellType() && StringUtils.isNotEmpty(pictures))
{
//获取指定行指定列中的图片文件：从获取的文件集合中获取
PictureData image = pictures.get(row.getRowNum() + "_" + entry.getKey());
if (image == null)
{
val = "";
}
else
{
byte[] data = image.getData();
val = FileUtils.writeImportBytes(data);//图片文件写入到 application.yml文件 ruoyi.profile属性对应的文件目录下
}
}
ReflectUtils.invokeSetter(entity, propertyName, val);
}
}
list.add(entity);
}
}
return list;
}

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最终，工具类 ExcelUtil.java：

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.lang.reflect.ParameterizedType;import java.math.BigDecimal;import java.text.DecimalFormat;import java.time.LocalDate;import java.time.LocalDateTime;import java.util.ArrayList;import java.util.Arrays;import java.util.Collection;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 javax.servlet.http.HttpServletResponse;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.HSSFClientAnchor;import org.apache.poi.hssf.usermodel.HSSFPicture;import org.apache.poi.hssf.usermodel.HSSFPictureData;import org.apache.poi.hssf.usermodel.HSSFShape;import org.apache.poi.hssf.usermodel.HSSFSheet;import org.apache.poi.hssf.usermodel.HSSFWorkbook;import org.apache.poi.ooxml.POIXMLDocumentPart;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.Name;import org.apache.poi.ss.usermodel.PictureData;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.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.apache.poi.xssf.usermodel.XSSFDrawing;import org.apache.poi.xssf.usermodel.XSSFPicture;import org.apache.poi.xssf.usermodel.XSSFShape;import org.apache.poi.xssf.usermodel.XSSFSheet;import org.apache.poi.xssf.usermodel.XSSFWorkbook;import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTMarker;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.UtilException;import com.ruoyi.common.utils.DateUtils;import com.ruoyi.common.utils.DictUtils;import com.ruoyi.common.utils.StringUtils;import com.ruoyi.common.utils.file.FileTypeUtils;import com.ruoyi.common.utils.file.FileUtils;import com.ruoyi.common.utils.file.ImageUtils;import com.ruoyi.common.utils.reflect.ReflectUtils;/** * Excel相干处理 * * @author ruoyi */public class ExcelUtil<T>{ private static final Logger log = LoggerFactory.getLogger(ExcelUtil.class); public static final String FORMULA_REGEX_STR = "=|-|\\+|@"; public static final String[] FORMULA_STR = { "=", "-", "+", "@" }; /** * 用于dictType属性数据存储，制止重复查缓存 */ public Map<String, String> sysDictMap = new HashMap<String, String>(); /** * Excel sheet最大行数，默认65536 */ public static final int sheetSize = 65536; /** * 工作表名称 */ private String sheetName; /** * 导出范例（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; /** * 当前行号 */ private int rownum; /** * 标题 */ private String title; /** * 最大高度 */ private short maxHeight; /** * 归并后末了行数 */ private int subMergedLastRowNum = 0; /** * 归并后开始行数 */ private int subMergedFirstRowNum = 1; /** * 对象的子列表方法 */ private Method subMethod; /** * 对象的子列表属性 */ private List<Field> subFields; /** * 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; /** * 需要排除列属性 */ public String[] excludeFields; public ExcelUtil(Class<T> clazz) { this.clazz = clazz; } /** * 潜伏Excel中列属性 * * @param fields 列属性名示例[单个"name"/多个"id","name"] * @throws Exception */ public void hideColumn(String... fields) { this.excludeFields = fields; } public void init(List<T> list, String sheetName, String title, Type type) { if (list == null) { list = new ArrayList<T>(); } this.list = list; this.sheetName = sheetName; this.type = type; this.title = title; createExcelField(); createWorkbook(); createTitle(); createSubHead(); } /** * 创建excel第一行标题 */ public void createTitle() { if (StringUtils.isNotEmpty(title)) { subMergedFirstRowNum++; subMergedLastRowNum++; int titleLastCol = this.fields.size() - 1; if (isSubList()) { titleLastCol = titleLastCol + subFields.size() - 1; } Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0); titleRow.setHeightInPoints(30); Cell titleCell = titleRow.createCell(0); titleCell.setCellStyle(styles.get("title")); titleCell.setCellValue(title); sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(), titleLastCol)); } } /** * 创建对象的子列表名称 */ public void createSubHead() { if (isSubList()) { subMergedFirstRowNum++; subMergedLastRowNum++; Row subRow = sheet.createRow(rownum); int excelNum = 0; for (Object[] objects : fields) { Excel attr = (Excel) objects[1]; Cell headCell1 = subRow.createCell(excelNum); headCell1.setCellValue(attr.name()); headCell1.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor()))); excelNum++; } int headFirstRow = excelNum - 1; int headLastRow = headFirstRow + subFields.size() - 1; if (headLastRow > headFirstRow) { sheet.addMergedRegion(new CellRangeAddress(rownum, rownum, headFirstRow, headLastRow)); } rownum++; } } /** * 对excel表单默认第一个索引名转换成list * * @param is 输入流 * @return 转换后聚集 */ public List<T> importExcel(InputStream is) { List<T> list = null; try { list = importExcel(is, 0); } catch (Exception e) { log.error("导入Excel非常{}", e.getMessage()); throw new UtilException(e.getMessage()); } finally { IOUtils.closeQuietly(is); } return list; } /** * 对excel表单默认第一个索引名转换成list * * @param is 输入流 * @param titleNum 标题占用行数 * @return 转换后聚集 */ public List<T> importExcel(InputStream is, int titleNum) throws Exception { return importExcel(StringUtils.EMPTY, is, titleNum); } /** * 对excel表单指定表格索引名转换成list * * @param sheetName 表格索引名 * @param titleNum 标题占用行数 * @param is 输入流 * @return 转换后聚集 */ public List<T> importExcel(String sheetName, InputStream is, int titleNum) throws Exception { this.type = Type.IMPORT; this.wb = WorkbookFactory.create(is); List<T> list = new ArrayList<T>(); // 如果指定sheet名,则取指定sheet中的内容否则默认指向第1个sheet Sheet sheet = StringUtils.isNotEmpty(sheetName) ? wb.getSheet(sheetName) : wb.getSheetAt(0); if (sheet == null) { throw new IOException("文件sheet不存在"); } boolean isXSSFWorkbook = !(wb instanceof HSSFWorkbook); //获取文档指定sheet中所有图片：图片位置、文件流 Map<String, PictureData> pictures; if (isXSSFWorkbook) { pictures = getSheetPictures07((XSSFSheet) sheet, (XSSFWorkbook) wb); } else { pictures = getSheetPictures03((HSSFSheet) sheet, (HSSFWorkbook) wb); } // 获取末了一个非空行的行下标，好比总行数为n，则返回的为n-1 int rows = sheet.getLastRowNum(); if (rows > 0) { // 界说一个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(titleNum); 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. List<Object[]> fields = this.getFields(); Map<Integer, Object[]> fieldsMap = new HashMap<Integer, Object[]>(); for (Object[] objects : fields) { Excel attr = (Excel) objects[1]; Integer column = cellMap.get(attr.name()); if (column != null) { fieldsMap.put(column, objects); } } for (int i = titleNum + 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); // 判断当前行是否是空行 if (isRowEmpty(row)) { continue; } T entity = null; //遍历所有列逐列字段值获取并赋值给entity对象的各属性 for (Map.Entry<Integer, Object[]> entry : fieldsMap.entrySet()) { Object val = this.getCellValue(row, entry.getKey());//获取当前列默认值 // ============== 新增归并行相干代码块 ================ // 判断是否归并行 isMergedRow(sheet, rowNum, column)：是归并行，则获取归并行数据重新赋值给当前列 if (isMergedRow(sheet, i, entry.getKey())) val = getMergedRegionValue(sheet, i, entry.getKey()); // ============== 新增归并行相干代码块 ================ // 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 = (Field) entry.getValue()[0]; Excel attr = (Excel) entry.getValue()[1]; // 取得范例,并根据对象范例设置值. 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 = parseDateToStr(dateFormat, 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) && StringUtils.isNumeric(Convert.toStr(val))) { 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)) { String propertyName = field.getName(); if (StringUtils.isNotEmpty(attr.targetAttr())) { propertyName = field.getName() + "." + attr.targetAttr(); } 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()); } else if (!attr.handler().equals(ExcelHandlerAdapter.class)) { val = dataFormatHandlerAdapter(val, attr, null); } else if (ColumnType.IMAGE == attr.cellType() && StringUtils.isNotEmpty(pictures)) { PictureData image = pictures.get(row.getRowNum() + "_" + entry.getKey()); if (image == null) { val = ""; } else { byte[] data = image.getData(); val = FileUtils.writeImportBytes(data);//图片文件写入到 application.yml文件 ruoyi.profile属性对应的文件目次下 } } ReflectUtils.invokeSetter(entity, propertyName, val); } } list.add(entity); } } return list; } /** * 新增归并行相干代码：判断是否是归并行 * * @param sheet * @param row * @param column * @return */ private boolean isMergedRow(Sheet sheet, int row, int column) { int sheetMergeCount = sheet.getNumMergedRegions(); for (int i = 0; i < sheetMergeCount; i++) { CellRangeAddress cellAddresses = sheet.getMergedRegion(i); int firstColumn = cellAddresses.getFirstColumn(); int lastColumn = cellAddresses.getLastColumn(); int firstRow = cellAddresses.getFirstRow(); int lastRow = cellAddresses.getLastRow(); if (row >= firstRow && row <= lastRow) { if (column >= firstColumn && column <= lastColumn) { return true; } } } return false; } /**
* 新增合并行相关代码：获取合并行的数据
*
* @param sheet
* @param row
* @param column
* @return
*/
private String getMergedRegionValue(Sheet sheet, int row, int column) {
// 获得该sheet所有合并单元格数量
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
// 获得合并区域
CellRangeAddress cellAddresses = sheet.getMergedRegion(i);
int firstColumn = cellAddresses.getFirstColumn();
int lastColumn = cellAddresses.getLastColumn();
int firstRow = cellAddresses.getFirstRow();
int lastRow = cellAddresses.getLastRow();
/*判断传入的单元格的行号列号是否在合并单元格的范围内，
如果在合并单元格的范围内，择返回合并区域的首单元格格值
*/
if (row >= firstRow && row <= lastRow) {
if (column >= firstColumn && column <= lastColumn) {
Row firRow = sheet.getRow(firstRow);
/* 合并行使用的获取单元格内容方法
Cell firCell = firRow.getCell(firstColumn);
return getCellValue(firCell);
*/
return getCellValue(firRow, firstColumn).toString();//改为使用若依自带获取单元格内容方法
}
}
}
// 如果该单元格行号列号不在任何一个合并区域，则返回null
return null;
} /** * 对list数据源将其内里的数据导入到excel表单 * * @param list 导出数据聚集 * @param sheetName 工作表的名称 * @return 结果 */ public AjaxResult exportExcel(List<T> list, String sheetName) { return exportExcel(list, sheetName, StringUtils.EMPTY); } /** * 对list数据源将其内里的数据导入到excel表单 * * @param list 导出数据聚集 * @param sheetName 工作表的名称 * @param title 标题 * @return 结果 */ public AjaxResult exportExcel(List<T> list, String sheetName, String title) { this.init(list, sheetName, title, Type.EXPORT); return exportExcel(); } /** * 对list数据源将其内里的数据导入到excel表单 * * @param response 返回数据 * @param list 导出数据聚集 * @param sheetName 工作表的名称 * @return 结果 */ public void exportExcel(HttpServletResponse response, List<T> list, String sheetName) { exportExcel(response, list, sheetName, StringUtils.EMPTY); } /** * 对list数据源将其内里的数据导入到excel表单 * * @param response 返回数据 * @param list 导出数据聚集 * @param sheetName 工作表的名称 * @param title 标题 * @return 结果 */ public void exportExcel(HttpServletResponse response, List<T> list, String sheetName, String title) { response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); response.setCharacterEncoding("utf-8"); this.init(list, sheetName, title, Type.EXPORT); exportExcel(response); } /** * 对list数据源将其内里的数据导入到excel表单 * * @param sheetName 工作表的名称 * @return 结果 */ public AjaxResult importTemplateExcel(String sheetName) { return importTemplateExcel(sheetName, StringUtils.EMPTY); } /** * 对list数据源将其内里的数据导入到excel表单 * * @param sheetName 工作表的名称 * @param title 标题 * @return 结果 */ public AjaxResult importTemplateExcel(String sheetName, String title) { this.init(null, sheetName, title, Type.IMPORT); return exportExcel(); } /** * 对list数据源将其内里的数据导入到excel表单 * * @param sheetName 工作表的名称 * @return 结果 */ public void importTemplateExcel(HttpServletResponse response, String sheetName) { importTemplateExcel(response, sheetName, StringUtils.EMPTY); } /** * 对list数据源将其内里的数据导入到excel表单 * * @param sheetName 工作表的名称 * @param title 标题 * @return 结果 */ public void importTemplateExcel(HttpServletResponse response, String sheetName, String title) { response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"); response.setCharacterEncoding("utf-8"); this.init(null, sheetName, title, Type.IMPORT); exportExcel(response); } /** * 对list数据源将其内里的数据导入到excel表单 * * @return 结果 */ public void exportExcel(HttpServletResponse response) { try { writeSheet(); wb.write(response.getOutputStream()); } catch (Exception e) { log.error("导出Excel非常{}", e.getMessage()); } finally { IOUtils.closeQuietly(wb); } } /** * 对list数据源将其内里的数据导入到excel表单 * * @return 结果 */ public AjaxResult exportExcel() { OutputStream out = null; try { writeSheet(); String filename = encodingFilename(sheetName); out = new FileOutputStream(getAbsoluteFile(filename)); wb.write(out); return AjaxResult.success(filename); } catch (Exception e) { log.error("导出Excel非常{}", e.getMessage()); throw new UtilException("导出Excel失败，请联系网站管理员！"); } finally { IOUtils.closeQuietly(wb); IOUtils.closeQuietly(out); } } /** * 创建写入数据到Sheet */ public void writeSheet() { // 取出一共有多少个sheet. int sheetNo = Math.max(1, (int) Math.ceil(list.size() * 1.0 / sheetSize)); for (int index = 0; index < sheetNo; index++) { createSheet(sheetNo, index); // 产生一行 Row row = sheet.createRow(rownum); int column = 0; // 写入各个字段的列头名称 for (Object[] os : fields) { Field field = (Field) os[0]; Excel excel = (Excel) os[1]; if (Collection.class.isAssignableFrom(field.getType())) { for (Field subField : subFields) { Excel subExcel = subField.getAnnotation(Excel.class); this.createHeadCell(subExcel, row, column++); } } else { this.createHeadCell(excel, row, column++); } } if (Type.EXPORT.equals(type)) { fillExcelData(index, row); addStatisticsRow(); } } } /** * 填充excel数据 * * @param index 序号 * @param row 单位格行 */ @SuppressWarnings("unchecked") public void fillExcelData(int index, Row row) { int startNo = index * sheetSize; int endNo = Math.min(startNo + sheetSize, list.size()); int rowNo = (1 + rownum) - startNo; for (int i = startNo; i < endNo; i++) { rowNo = isSubList() ? (i > 1 ? rowNo + 1 : rowNo + i) : i + 1 + rownum - startNo; row = sheet.createRow(rowNo); // 得到导出对象. T vo = (T) list.get(i); Collection<?> subList = null; if (isSubList()) { if (isSubListValue(vo)) { subList = getListCellValue(vo); subMergedLastRowNum = subMergedLastRowNum + subList.size(); } else { subMergedFirstRowNum++; subMergedLastRowNum++; } } int column = 0; for (Object[] os : fields) { Field field = (Field) os[0]; Excel excel = (Excel) os[1]; if (Collection.class.isAssignableFrom(field.getType()) && StringUtils.isNotNull(subList)) { boolean subFirst = false; for (Object obj : subList) { if (subFirst) { rowNo++; row = sheet.createRow(rowNo); } List<Field> subFields = FieldUtils.getFieldsListWithAnnotation(obj.getClass(), Excel.class); int subIndex = 0; for (Field subField : subFields) { if (subField.isAnnotationPresent(Excel.class)) { subField.setAccessible(true); Excel attr = subField.getAnnotation(Excel.class); this.addCell(attr, row, (T) obj, subField, column + subIndex); } subIndex++; } subFirst = true; } this.subMergedFirstRowNum = this.subMergedFirstRowNum + subList.size(); } else { 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); Font titleFont = wb.createFont(); titleFont.setFontName("Arial"); titleFont.setFontHeightInPoints((short) 16); titleFont.setBold(true); style.setFont(titleFont); styles.put("title", style); 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.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); styles.putAll(annotationHeaderStyles(wb, styles)); styles.putAll(annotationDataStyles(wb)); return styles; } /** * 根据Excel注解创建表格头样式 * * @param wb 工作薄对象 * @return 自界说样式列表 */ private Map<String, CellStyle> annotationHeaderStyles(Workbook wb, Map<String, CellStyle> styles) { Map<String, CellStyle> headerStyles = new HashMap<String, CellStyle>(); for (Object[] os : fields) { Excel excel = (Excel) os[1]; String key = StringUtils.format("header_{}_{}", excel.headerColor(), excel.headerBackgroundColor()); if (!headerStyles.containsKey(key)) { CellStyle style = wb.createCellStyle(); style.cloneStyleFrom(styles.get("data")); style.setAlignment(HorizontalAlignment.CENTER); style.setVerticalAlignment(VerticalAlignment.CENTER); style.setFillForegroundColor(excel.headerBackgroundColor().index); style.setFillPattern(FillPatternType.SOLID_FOREGROUND); Font headerFont = wb.createFont(); headerFont.setFontName("Arial"); headerFont.setFontHeightInPoints((short) 10); headerFont.setBold(true); headerFont.setColor(excel.headerColor().index); style.setFont(headerFont); headerStyles.put(key, style); } } return headerStyles; } /** * 根据Excel注解创建表格列样式 * * @param wb 工作薄对象 * @return 自界说样式列表 */ private Map<String, CellStyle> annotationDataStyles(Workbook wb) { Map<String, CellStyle> styles = new HashMap<String, CellStyle>(); for (Object[] os : fields) { Excel excel = (Excel) os[1]; String key = StringUtils.format("data_{}_{}_{}", excel.align(), excel.color(), excel.backgroundColor()); if (!styles.containsKey(key)) { CellStyle style = wb.createCellStyle(); style.setAlignment(excel.align()); 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()); style.setFillPattern(FillPatternType.SOLID_FOREGROUND); style.setFillForegroundColor(excel.backgroundColor().getIndex()); Font dataFont = wb.createFont(); dataFont.setFontName("Arial"); dataFont.setFontHeightInPoints((short) 10); dataFont.setColor(excel.color().index); style.setFont(dataFont); styles.put(key, style); } } return styles; } /** * 创建单位格 */ public Cell createHeadCell(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(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor()))); if (isSubList()) { // 填充默认样式，防止归并单位格样式失效 sheet.setDefaultColumnStyle(column, styles.get(StringUtils.format("data_{}_{}_{}", attr.align(), attr.color(), attr.backgroundColor()))); if (attr.needMerge()) { sheet.addMergedRegion(new CellRangeAddress(rownum - 1, rownum, column, column)); } } return cell; } /** * 设置单位格信息 * * @param value 单位格值 * @param attr 注解相干 * @param cell 单位格信息 */ public void setCellVo(Object value, Excel attr, Cell cell) { if (ColumnType.STRING == attr.cellType()) { String cellValue = Convert.toStr(value); // 对于任何以表达式触发字符 =-+@开头的单位格，直接使用tab字符作为前缀，防止CSV注入。 if (StringUtils.startsWithAny(cellValue, FORMULA_STR)) { cellValue = RegExUtils.replaceFirst(cellValue, FORMULA_REGEX_STR, "\t$0"); } if (value instanceof Collection && StringUtils.equals("[]", cellValue)) { cellValue = StringUtils.EMPTY; } cell.setCellValue(StringUtils.isNull(cellValue) ? attr.defaultValue() : cellValue + 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(); } /** * 获取图片范例,设置图片插入范例 */ 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)); } if (StringUtils.isNotEmpty(attr.prompt()) || attr.combo().length > 0) { if (attr.combo().length > 15 || StringUtils.join(attr.combo()).length() > 255) { // 如果下拉数大于15或字符串长度大于255，则使用一个新sheet存储，制止生成的模板下拉值获取不到 setXSSFValidationWithHidden(sheet, attr.combo(), attr.prompt(), 1, 100, column, column); } else { // 提示信息或只能选择不能输入的列内容. setPromptOrValidation(sheet, attr.combo(), attr.prompt(), 1, 100, column, column); } } } /** * 添加单位格 */ 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中设置环境决定是否导出,有些环境需要保持为空,希望用户填写这一列. if (attr.isExport()) { // 创建cell cell = row.createCell(column); if (isSubListValue(vo) && getListCellValue(vo).size() > 1 && attr.needMerge()) { CellRangeAddress cellAddress = new CellRangeAddress(subMergedFirstRowNum, subMergedLastRowNum, column, column); sheet.addMergedRegion(cellAddress); } cell.setCellStyle(styles.get(StringUtils.format("data_{}_{}_{}", attr.align(), attr.color(), attr.backgroundColor()))); // 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(parseDateToStr(dateFormat, 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)) { if (!sysDictMap.containsKey(dictType + value)) { String lable = convertDictByExp(Convert.toStr(value), dictType, separator); sysDictMap.put(dictType + value, lable); } cell.setCellValue(sysDictMap.get(dictType + value)); } else if (value instanceof BigDecimal && -1 != attr.scale()) { cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).doubleValue()); } else if (!attr.handler().equals(ExcelHandlerAdapter.class)) { cell.setCellValue(dataFormatHandlerAdapter(value, attr, cell)); } else { // 设置列范例 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 单位格提示或选择框 * * @param sheet 表单 * @param textlist 下拉框显示的内容 * @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 setPromptOrValidation(Sheet sheet, String[] textlist, String promptContent, int firstRow, int endRow, int firstCol, int endCol) { DataValidationHelper helper = sheet.getDataValidationHelper(); DataValidationConstraint constraint = textlist.length > 0 ? helper.createExplicitListConstraint(textlist) : helper.createCustomConstraint("DD1"); CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol); DataValidation dataValidation = helper.createValidation(constraint, regions); if (StringUtils.isNotEmpty(promptContent)) { // 如果设置了提示信息则鼠标放上去提示 dataValidation.createPromptBox("", promptContent); dataValidation.setShowPromptBox(true); } // 处理Excel兼容性题目 if (dataValidation instanceof XSSFDataValidation) { dataValidation.setSuppressDropDownArrow(true); dataValidation.setShowErrorBox(true); } else { dataValidation.setSuppressDropDownArrow(false); } sheet.addValidationData(dataValidation); } /** * 设置某些列的值只能输入预制的数据,显示下拉框（兼容超出一定数量的下拉框）. * * @param sheet 要设置的sheet. * @param textlist 下拉框显示的内容 * @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 setXSSFValidationWithHidden(Sheet sheet, String[] textlist, String promptContent, int firstRow, int endRow, int firstCol, int endCol) { String hideSheetName = "combo_" + firstCol + "_" + endCol; Sheet hideSheet = wb.createSheet(hideSheetName); // 用于存储下拉菜单数据 for (int i = 0; i < textlist.length; i++) { hideSheet.createRow(i).createCell(0).setCellValue(textlist[i]); } // 创建名称，可被其他单位格引用 Name name = wb.createName(); name.setNameName(hideSheetName + "_data"); name.setRefersToFormula(hideSheetName + "!$A$1:$A$" + textlist.length); DataValidationHelper helper = sheet.getDataValidationHelper(); // 加载下拉列表内容 DataValidationConstraint constraint = helper.createFormulaListConstraint(hideSheetName + "_data"); // 设置数据有效性加载在哪个单位格上,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); if (StringUtils.isNotEmpty(promptContent)) { // 如果设置了提示信息则鼠标放上去提示 dataValidation.createPromptBox("", promptContent); dataValidation.setShowPromptBox(true); } // 处理Excel兼容性题目 if (dataValidation instanceof XSSFDataValidation) { dataValidation.setSuppressDropDownArrow(true); dataValidation.setShowErrorBox(true); } else { dataValidation.setSuppressDropDownArrow(false); } sheet.addValidationData(dataValidation); // 设置hiddenSheet潜伏 wb.setSheetHidden(wb.getSheetIndex(hideSheet), true); } /** * 分析导出值 0=男,1=女,2=未知 * * @param propertyValue 参数值 * @param converterExp 翻译注解 * @param separator 分隔符 * @return 分析后值 */ 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(propertyValue, separator)) { 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); } /** * 反向分析值男=0,女=1,未知=2 * * @param propertyValue 参数值 * @param converterExp 翻译注解 * @param separator 分隔符 * @return 分析后值 */ 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(propertyValue, separator)) { 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); } /** * 分析字典值 * * @param dictValue 字典值 * @param dictType 字典范例 * @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); } /** * 反向分析值字典值 * * @param dictLabel 字典标签 * @param dictType 字典范例 * @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); } /** * 数据处理器 * * @param value 数据值 * @param excel 数据注解 * @return */ public String dataFormatHandlerAdapter(Object value, Excel excel, Cell cell) { try { Object instance = excel.handler().newInstance(); Method formatMethod = excel.handler().getMethod("format", new Class[] { Object.class, String[].class, Cell.class, Workbook.class }); value = formatMethod.invoke(instance, value, excel.args(), cell, this.wb); } catch (Exception e) { log.error("不能格式化数据 " + excel.handler(), e.getMessage()); } return Convert.toStr(value); } /** * 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) { Row row = sheet.createRow(sheet.getLastRowNum() + 1); Set<Integer> keys = statistics.keySet(); Cell 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() + "_" + 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.contains(".")) { 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方法方法情势获取值 * * @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; } /** * 得到所有界说字段 */ private void createExcelField() { this.fields = getFields(); this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList()); this.maxHeight = getRowHeight(); } /** * 获取字段注解信息 */ public List<Object[]> getFields() { List<Object[]> 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) { if (!ArrayUtils.contains(this.excludeFields, field.getName())) { // 单注解 if (field.isAnnotationPresent(Excel.class)) { Excel attr = field.getAnnotation(Excel.class); if (attr != null && (attr.type() == Type.ALL || attr.type() == type)) { field.setAccessible(true); fields.add(new Object[] { field, attr }); } if (Collection.class.isAssignableFrom(field.getType())) { subMethod = getSubMethod(field.getName(), clazz); ParameterizedType pt = (ParameterizedType) field.getGenericType(); Class<?> subClass = (Class<?>) pt.getActualTypeArguments()[0]; this.subFields = FieldUtils.getFieldsListWithAnnotation(subClass, Excel.class); } } // 多注解 if (field.isAnnotationPresent(Excels.class)) { Excels attrs = field.getAnnotation(Excels.class); Excel[] excels = attrs.value(); for (Excel attr : excels) { if (!ArrayUtils.contains(this.excludeFields, field.getName() + "." + attr.targetAttr()) && (attr != null && (attr.type() == Type.ALL || attr.type() == type))) { field.setAccessible(true); fields.add(new Object[] { field, attr }); } } } } } return fields; } /** * 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 = Math.max(maxHeight, excel.height()); } return (short) (maxHeight * 20); } /** * 创建一个工作簿 */ public void createWorkbook() { this.wb = new SXSSFWorkbook(500); this.sheet = wb.createSheet(); wb.setSheetName(0, sheetName); this.styles = createStyles(wb); } /** * 创建工作表 * * @param sheetNo sheet数量 * @param index 序号 */ public void createSheet(int sheetNo, int index) { // 设置工作表的名称. if (sheetNo > 1 && index > 0) { this.sheet = wb.createSheet(); this.createTitle(); wb.setSheetName(index, sheetName + index); } } /** * 获取单位格值 * * @param row 获取的行 * @param column 获取单位格列号 * @return 单位格值 */ 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; } /** * 判断是否是空行 * * @param row 判断的行 * @return */ private boolean isRowEmpty(Row row) { if (row == null) { return true; } for (int i = row.getFirstCellNum(); i < row.getLastCellNum(); i++) { Cell cell = row.getCell(i); if (cell != null && cell.getCellType() != CellType.BLANK) { return false; } } return true; } /** * 获取Excel2003图片 * * @param sheet 当前sheet对象 * @param workbook 工作簿对象 * @return Map key:图片单位格索引（1_1）String，value:图片流PictureData */ public static Map<String, PictureData> getSheetPictures03(HSSFSheet sheet, HSSFWorkbook workbook) { Map<String, PictureData> sheetIndexPicMap = new HashMap<String, PictureData>(); List<HSSFPictureData> pictures = workbook.getAllPictures(); if (!pictures.isEmpty()) { for (HSSFShape shape : sheet.getDrawingPatriarch().getChildren()) { HSSFClientAnchor anchor = (HSSFClientAnchor) shape.getAnchor(); if (shape instanceof HSSFPicture) { HSSFPicture pic = (HSSFPicture) shape; int pictureIndex = pic.getPictureIndex() - 1; HSSFPictureData picData = pictures.get(pictureIndex); String picIndex = anchor.getRow1() + "_" + anchor.getCol1(); sheetIndexPicMap.put(picIndex, picData); } } return sheetIndexPicMap; } else { return sheetIndexPicMap; } } /** * 获取Excel2007图片 * * @param sheet 当前sheet对象 * @param workbook 工作簿对象 * @return Map key:图片单位格索引（1_1）String，value:图片流PictureData */ public static Map<String, PictureData> getSheetPictures07(XSSFSheet sheet, XSSFWorkbook workbook) { Map<String, PictureData> sheetIndexPicMap = new HashMap<String, PictureData>(); for (POIXMLDocumentPart dr : sheet.getRelations()) { if (dr instanceof XSSFDrawing) { XSSFDrawing drawing = (XSSFDrawing) dr; List<XSSFShape> shapes = drawing.getShapes(); for (XSSFShape shape : shapes) { if (shape instanceof XSSFPicture) { XSSFPicture pic = (XSSFPicture) shape; XSSFClientAnchor anchor = pic.getPreferredSize(); CTMarker ctMarker = anchor.getFrom(); String picIndex = ctMarker.getRow() + "_" + ctMarker.getCol(); sheetIndexPicMap.put(picIndex, pic.getPictureData()); } } } } return sheetIndexPicMap; } /** * 格式化不同范例的日期对象 * * @param dateFormat 日期格式 * @param val 被格式化的日期对象 * @return 格式化后的日期字符 */ public String parseDateToStr(String dateFormat, Object val) { if (val == null) { return ""; } String str; if (val instanceof Date) { str = DateUtils.parseDateToStr(dateFormat, (Date) val); } else if (val instanceof LocalDateTime) { str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDateTime) val)); } else if (val instanceof LocalDate) { str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDate) val)); } else { str = val.toString(); } return str; } /** * 是否有对象的子列表 */ public boolean isSubList() { return StringUtils.isNotNull(subFields) && subFields.size() > 0; } /** * 是否有对象的子列表，聚集不为空 */ public boolean isSubListValue(T vo) { return StringUtils.isNotNull(subFields) && subFields.size() > 0 && StringUtils.isNotNull(getListCellValue(vo)) && getListCellValue(vo).size() > 0; } /** * 获取聚集的值 */ public Collection<?> getListCellValue(Object obj) { Object value; try { value = subMethod.invoke(obj, new Object[] {}); } catch (Exception e) { return new ArrayList<Object>(); } return (Collection<?>) value; } /** * 获取对象的子列表方法 * * @param name 名称 * @param pojoClass 类对象 * @return 子列表方法 */ public Method getSubMethod(String name, Class<?> pojoClass) { StringBuffer getMethodName = new StringBuffer("get"); getMethodName.append(name.substring(0, 1).toUpperCase()); getMethodName.append(name.substring(1)); Method method = null; try { method = pojoClass.getMethod(getMethodName.toString(), new Class[] {}); } catch (Exception e) { log.error("获取对象非常{}", e.getMessage()); } return method; }}

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======================================================
参考自：
https://www.iteye.com/blog/357029540-2438298
下面工具类为该文下的POI处理表格数据的源码：

package com.chinamobile.util;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.multipart.MultipartFile;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
/**
* @author liaoyubo
* @version 1.0
* @date 2019/2/27
* @description
*/
@Slf4j
public class POIUtils {
private final static String XLS = "xls";
private final static String XLSX = "xlsx";
private static SimpleDateFormat sdf;
/**
* 读入excel文件，解析后返回
*
* @param file
* @throws IOException
*/
public static List<String[]> readExcel(MultipartFile file) throws IOException {
//检查文件
checkFile(file);
//获得Workbook工作薄对象
Workbook workbook = getWorkBook(file);
//创建返回对象，把每行中的值作为一个数组，所有行作为一个集合返回
List<String[]> list = new ArrayList<>();
if (workbook != null) {
for (int sheetNum = 0; sheetNum < workbook.getNumberOfSheets(); sheetNum++) {
//获得当前sheet工作表
Sheet sheet = workbook.getSheetAt(sheetNum);
if (sheet == null) {
continue;
}
//获得当前sheet的开始行
int firstRowNum = sheet.getFirstRowNum();
//获得当前sheet的结束行
int lastRowNum = sheet.getLastRowNum();
//循环除了第一行的所有行
list = rowList(sheet,firstRowNum + 1,lastRowNum);
}
workbook.close();
}
return list;
}
public static List<String[]> readExcel(MultipartFile file,
int sheetNum,
int startRow) throws IOException {
//检查文件
checkFile(file);
//获得Workbook工作薄对象
Workbook workbook = getWorkBook(file);
//创建返回对象，把每行中的值作为一个数组，所有行作为一个集合返回
List<String[]> list = new ArrayList<>();
if (workbook != null) {
//获得当前sheet工作表
Sheet sheet = workbook.getSheetAt(sheetNum);
if (!Optional.ofNullable(sheet).isPresent()) {
return null;
}
//获得当前sheet的结束行
int lastRowNum = sheet.getLastRowNum();
//循环指定的所有行
list = rowList(sheet,startRow,lastRowNum);
workbook.close();
}
return list;
}
/**
* 检查文件是否正确
*
* @param file
* @throws IOException
*/
private static void checkFile(MultipartFile file) throws IOException {
//判断文件是否存在
if (null == file) {
log.error("文件不存在！");
throw new FileNotFoundException("文件不存在！");
}
//获得文件名
String fileName = file.getOriginalFilename();
//判断文件是否是excel文件
if (!fileName.endsWith(XLS) && !fileName.endsWith(XLSX)) {
log.error(fileName + "不是excel文件");
throw new IOException(fileName + "不是excel文件");
}
}
/**
* 对文件解析
*
* @param file
* @return
*/
private static Workbook getWorkBook(MultipartFile file) {
//获得文件名
String fileName = file.getOriginalFilename();
//创建Workbook工作薄对象，表示整个excel
Workbook workbook = null;
try {
//获取excel文件的io流
InputStream is = file.getInputStream();
//根据文件后缀名不同(xls和xlsx)获得不同的Workbook实现类对象
if (fileName.endsWith(XLS)) {
//2003
workbook = new HSSFWorkbook(is);
} else if (fileName.endsWith(XLSX)) {
//2007
workbook = new XSSFWorkbook(is);
}
} catch (IOException e) {
log.info(e.getMessage());
}
return workbook;
}
/**
* 判断是否是合并行
*
* @param sheet
* @param row
* @param column
* @return
*/
private static boolean isMergedRow(Sheet sheet, int row, int column) {
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
CellRangeAddress cellAddresses = sheet.getMergedRegion(i);
int firstColumn = cellAddresses.getFirstColumn();
int lastColumn = cellAddresses.getLastColumn();
int firstRow = cellAddresses.getFirstRow();
int lastRow = cellAddresses.getLastRow();
if (row >= firstRow && row <= lastRow) {
if (column >= firstColumn && column <= lastColumn) {
return true;
}
}
}
return false;
}
/**
* 获取合并行的数据
*
* @param sheet
* @param row
* @param column
* @return
*/
private static String getMergedRegionValue(Sheet sheet, int row, int column) {
// 获得该sheet所有合并单元格数量
int sheetMergeCount = sheet.getNumMergedRegions();
for (int i = 0; i < sheetMergeCount; i++) {
// 获得合并区域
CellRangeAddress cellAddresses = sheet.getMergedRegion(i);
int firstColumn = cellAddresses.getFirstColumn();
int lastColumn = cellAddresses.getLastColumn();
int firstRow = cellAddresses.getFirstRow();
int lastRow = cellAddresses.getLastRow();
/*判断传入的单元格的行号列号是否在合并单元格的范围内，
如果在合并单元格的范围内，择返回合并区域的首单元格格值
*/
if (row >= firstRow && row <= lastRow) {
if (column >= firstColumn && column <= lastColumn) {
Row firRow = sheet.getRow(firstRow);
Cell firCell = firRow.getCell(firstColumn);
return getCellValue(firCell);
}
}
}
// 如果该单元格行号列号不在任何一个合并区域，则返回null
return null;
}
/**
* 获取行的集合
* @param sheet
* @param startRow
* @param lastRowNum
* @return
*/
private static List<String[]> rowList(Sheet sheet,int startRow,int lastRowNum){
List<String[]> list = new ArrayList<>();
for (int rowNum = startRow; rowNum <= lastRowNum; rowNum++) {
//获得当前行
Row row = sheet.getRow(rowNum);
if (!Optional.ofNullable(row).isPresent()) {
continue;
}
//获得当前行的开始列
int firstColumn = row.getFirstCellNum();
//获得当前行的列数
int lastColumn = row.getPhysicalNumberOfCells();
String[] cells = new String[lastColumn];//行内所有列的值
//循环当前行的所有列
for (int column = firstColumn; column < lastColumn; column++) {
Cell cell = row.getCell(column);//遍历中的某列
// 判断是否合并行
boolean isMerge = isMergedRow(sheet, rowNum, column);
if (isMerge) {
//是合并行，则获取合并行数据
cells[column] = getMergedRegionValue(sheet, rowNum, column);
} else {
cells[column] = getCellValue(cell);//默认当前列内值
}
}
list.add(cells);
}
return list;
}
/**
* 获取单元格值
*
* @param cell
* @return
*/
private static String getCellValue(Cell cell) {
String cellValue = "";
if (cell == null) {
return cellValue;
}
// 把数字当成String来读，避免出现1读成1.0的情况
if (cell.getCellType() == CellType.NUMERIC) {
cell.setCellType(CellType.STRING);
}
// 判断数据的类型
switch (cell.getCellType()) {
// 文本
case STRING:
cellValue = cell.getStringCellValue();
break;
// 数字、日期
case NUMERIC:
if (DateUtil.isCellDateFormatted(cell)) {
sdf = new SimpleDateFormat("yyyy/MM/dd");
// 日期型
cellValue = sdf.format(cell.getDateCellValue());
} else {
// 数字
cellValue = String.valueOf(cell.getNumericCellValue());
}
break;
// 布尔型
case BOOLEAN:
cellValue = String.valueOf(cell.getBooleanCellValue());
break;
// 空白
case BLANK:
cellValue = cell.getStringCellValue();
break;
// 错误
case ERROR:
cellValue = "";
break;
// 公式
case FORMULA:
cellValue = "";
break;
default:
cellValue = "";
}
return cellValue;
}
}

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==========================================
其他POI处理归并行的参考：(未验证是否可用)
https://www.cnblogs.com/zhou-pan/p/10037438.html

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若依 ruoyi poi Excel归并行的导入

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