本文仅针对文字相关的合并做了处理 ，图片合并及保存需要另做处理！！
目标：Excel合并行内容的导入
结果：
1. ExcelUtil.java 类，新增方法：判断是否是合并行
/**
* 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();
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;
}2. ExcelUtil.java 类，新增方法：获取合并行单元格数据
思路：
POI对于Excel的处理：合并行中 只有首列能获取到值 非首列的其他列数据默认是空。由于是合并行，则可以认为 合并行内所有列的数据 都与合并行的首列数据相同。
所以，以下代码中，判断该列如果包含在合并行内，则该列值默认赋值为 所在合并行的首列值。
图1 Excel中的2/3/4行内的合并行内容相同：
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作
/**
* 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;
}3. ExcelUtil.java的importExcel()方法中 遍历行内所有单元格内容下，新增： 合并行的判断 和 其内单元格内容获取
// ============== 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 ================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相关处理
*
* @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，避免重复查缓存
*/
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;
/**
* 当前行号
*/
private int rownum;
/**
* 标题
*/
private String title;
/**
* 最大高度
*/
private short maxHeight;
/**
* 合并后最后行数
*/
private int subMergedLastRowNum = 0;
/**
* 合并后开始行数
*/
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;
}
/**
* 隐藏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 转换后集合
*/
public List<T> importExcel(InputStream is)
{
List<T> list = null;
try
{
list = importExcel(is, 0);
}
catch (Exception e)
{
log.error("导入Excel异常{}", 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 转换后集合
*/
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);
}
}
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 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 ================
// 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))
{
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;
}
/**
* 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();
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)
{
return exportExcel(list, sheetName, StringUtils.EMPTY);
}
/**
* 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
* @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数据源将其里面的数据导入到excel表单
*
* @param response 返回数据
* @param list 导出数据集合
* @param sheetName 工作表的名称
* @return 结果
*/
public void exportExcel(HttpServletResponse response, List<T> list, String sheetName)
{
exportExcel(response, list, sheetName, StringUtils.EMPTY);
}
/**
* 对list数据源将其里面的数据导入到excel表单
*
* @param response 返回数据
* @param list 导出数据集合
* @param sheetName 工作表的名称
* @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)
{
return importTemplateExcel(sheetName, StringUtils.EMPTY);
}
/**
* 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
* @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数据源将其里面的数据导入到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数据源将其里面的数据导入到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数据源将其里面的数据导入到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异常{}", e.getMessage());
}
finally
{
IOUtils.closeQuietly(wb);
}
}
/**
* 对list数据源将其里面的数据导入到excel表单
*
* @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异常{}", 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 单元格行
*/
@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 自定义样式列表
*/
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 自定义样式列表
*/
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;
}
/**
* 创建单元格
*/
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，防止合并单元格样式失效
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())
{
String cellValue = Convert.toStr(value);
// 对于任何以表达式触发字符 =-+@开头的单元格，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));
}
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，避免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);
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兼容性问题
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，可被其他单元格引用
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);
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兼容性问题
if (dataValidation instanceof XSSFDataValidation)
{
dataValidation.setSuppressDropDownArrow(true);
dataValidation.setShowErrorBox(true);
}
else
{
dataValidation.setSuppressDropDownArrow(false);
}
sheet.addValidationData(dataValidation);
// 设置hiddenSheet隐藏
wb.setSheetHidden(wb.getSheetIndex(hideSheet), true);
}
/**
* 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(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(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);
}
/**
* 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);
}
/**
* 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 = 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;
}
/**
* 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:图片单元格索引（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:图片单元格索引（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;
}
/**
* 格式化不同类型的日期对象
*
* @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，集合不为空
*/
public boolean isSubListValue(T vo)
{
return StringUtils.isNotNull(subFields) && subFields.size() > 0 && StringUtils.isNotNull(getListCellValue(vo)) && getListCellValue(vo).size() > 0;
}
/**
* 获取集合的值
*/
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("获取对象异常{}", e.getMessage());
}
return method;
}
}
======================================================
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;
}
}
==========================================
其他POI处理合并行的参考：(未验证是否可用)
https://www.cnblogs.com/zhou-pan/p/10037438.html
