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cn.sanenen.sunutils.poi.excel.ExcelHandler Maven / Gradle / Ivy
package cn.sanenen.sunutils.poi.excel;
import cn.hutool.core.codec.Base64;
import cn.hutool.core.convert.Convert;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.exceptions.UtilException;
import cn.hutool.core.io.IoUtil;
import cn.hutool.core.util.CharsetUtil;
import cn.hutool.core.util.ObjectUtil;
import cn.hutool.core.util.StrUtil;
import cn.hutool.core.util.URLUtil;
import cn.hutool.log.Log;
import cn.hutool.poi.excel.ExcelPicUtil;
import cn.hutool.poi.excel.ExcelReader;
import cn.hutool.poi.excel.ExcelUtil;
import cn.hutool.poi.excel.cell.CellUtil;
import cn.sanenen.sunutils.poi.excel.Excel.Type;
import cn.sanenen.sunutils.utils.other.ReflectUtil;
import cn.sanenen.sunutils.poi.excel.Excel.ColumnType;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ooxml.POIXMLDocumentPart;
import org.apache.poi.ss.usermodel.*;
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.*;
import org.openxmlformats.schemas.drawingml.x2006.spreadsheetDrawing.CTMarker;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.util.*;
import java.util.stream.Collectors;
/**
* Excel相关处理
*
* @author ruoyi
*/
public class ExcelHandler {
private static final Log log = Log.get();
/**
* Excel sheet最大行数，默认65536
*/
public static final double 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;
private ExcelReader reader;
/**
* 工作薄对象
*/
private Workbook wb;
/**
* 工作表对象
*/
private Sheet sheet;
/**
* 样式列表
*/
private Map styles;
/**
* 导入导出数据列表
*/
private List list;
/**
* 注解列表
*/
private List fields;
/**
* 最大高度
*/
private short maxHeight;
/**
* 统计列表
*/
private Map statistics = new HashMap();
/**
* 数字格式
*/
private static final DecimalFormat DOUBLE_FORMAT = new DecimalFormat("######0.00");
/**
* 实体对象
*/
public Class clazz;
public ExcelHandler(Class clazz) {
this.clazz = clazz;
}
public void init(List list, String sheetName, Type type) {
if (list == null) {
list = new ArrayList();
}
this.list = list;
this.sheetName = sheetName;
this.type = type;
createExcelField();
createWorkbook();
}
/**
* 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 importExcel(InputStream is) throws Exception {
return importExcel(StrUtil.EMPTY, is);
}
/**
* 对excel表单指定表格索引名转换成list
*
* @param sheetName 表格索引名
* @param is 输入流
* @return 转换后集合
*/
public List importExcel(String sheetName, InputStream is) throws Exception {
this.type = Type.IMPORT;
List list = new ArrayList<>();
// 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
if (StrUtil.isNotBlank(sheetName)) {
reader = ExcelUtil.getReader(is, sheetName);
} else {
reader = ExcelUtil.getReader(is);
}
this.wb = reader.getWorkbook();
Sheet sheet = reader.getSheet();
Map pictures = ExcelPicUtil.getPicMap(wb, wb.getSheetIndex(sheet));
// 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 cellMap = new HashMap<>();
// 获取表头
Row heard = sheet.getRow(0);
for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++) {
Cell cell = heard.getCell(i);
if (Objects.nonNull(cell)) {
String value = CellUtil.getCellValue(cell).toString();
cellMap.put(value, i);
} else {
cellMap.put(null, i);
}
}
Field[] allFields = clazz.getDeclaredFields();
// 定义一个map用于存放列的序号和field.
Map fieldsMap = new HashMap<>();
for (Field field : allFields) {
cn.sanenen.sunutils.poi.excel.Excel attr = field.getAnnotation(cn.sanenen.sunutils.poi.excel.Excel.class);
if (attr != null && (attr.type() == Type.ALL || attr.type() == type)) {
// 设置类的私有字段属性可访问.
field.setAccessible(true);
Integer column = cellMap.get(attr.name());
if (column != null) {
fieldsMap.put(column, field);
}
}
}
for (int i = 1; i <= rows; i++) {
// 从第2行开始取数据,默认第一行是表头.
Row row = sheet.getRow(i);
// 判断当前行是否是空行
if (isRowEmpty(row)) {
continue;
}
T entity = null;
for (Map.Entry entry : fieldsMap.entrySet()) {
Object val = CellUtil.getCellValue(CellUtil.getCell(row, entry.getKey()));
// 如果不存在实例则新建.
entity = (entity == null ? clazz.newInstance() : entity);
// 从map中得到对应列的field.
Field field = entry.getValue();
// 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 (StrUtil.endWith(s, ".0")) {
val = StrUtil.subBefore(s, ".0", false);
} else {
String dateFormat = field.getAnnotation(Excel.class).dateFormat();
if (StrUtil.isNotEmpty(dateFormat)) {
val = DateUtil.format((Date) val, dateFormat);
} else {
val = Convert.toStr(val);
}
}
} else if ((Integer.TYPE == fieldType || Integer.class == fieldType) && StrUtil.isNumeric(Convert.toStr(val))) {
val = Convert.toInt(val);
} else if (Long.TYPE == fieldType || Long.class == fieldType) {
val = Convert.toLong(val);
} else if (Double.TYPE == fieldType || Double.class == fieldType) {
val = Convert.toDouble(val);
} else if (Float.TYPE == fieldType || Float.class == fieldType) {
val = Convert.toFloat(val);
} else if (BigDecimal.class == fieldType) {
val = Convert.toBigDecimal(val);
} else if (Date.class == fieldType) {
if (val instanceof String) {
val = DateUtil.parseDate((String) val);
} else if (val instanceof Double) {
val = org.apache.poi.ss.usermodel.DateUtil.getJavaDate((Double) val);
}
} else if (Boolean.TYPE == fieldType || Boolean.class == fieldType) {
val = Convert.toBool(val, false);
}
Excel attr = field.getAnnotation(Excel.class);
String propertyName = field.getName();
if (StrUtil.isNotEmpty(attr.targetAttr())) {
propertyName = field.getName() + "." + attr.targetAttr();
} else if (StrUtil.isNotEmpty(attr.readConverterExp())) {
val = reverseByExp(Convert.toStr(val), attr.readConverterExp(), attr.separator());
} else if (ColumnType.IMAGE == attr.cellType() && ObjectUtil.isNotEmpty(pictures)) {
PictureData image = pictures.get(row.getRowNum() + "_" + entry.getKey());
byte[] data = image.getData();
val = Base64.encode(data);
}
ReflectUtil.invokeSetter(entity, propertyName, val);
}
list.add(entity);
}
}
return list;
}
/**
* 对list数据源将其里面的数据导入到excel表单
*
* @param list 导出数据集合
* @param sheetName 工作表的名称
* @return 结果
*/
public Workbook exportExcel(List list, String sheetName) {
this.init(list, sheetName, Type.EXPORT);
return exportExcel();
}
public void exportExcel(HttpServletResponse response) {
ServletOutputStream out = null;
try {
writeSheet();
wb.write(response.getOutputStream());
} catch (Exception e) {
log.error("导出Excel异常{}", e.getMessage());
} finally {
IoUtil.close(wb);
}
}
public void exportExcel(HttpServletResponse response, List list, String sheetName) {
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setCharacterEncoding("utf-8");
response.setHeader("Content-Disposition", StrUtil.format("attachment;filename={}",
URLUtil.encode(sheetName + ".xlsx", CharsetUtil.CHARSET_UTF_8)));
this.init(list, sheetName, 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 Workbook importTemplateExcel(String sheetName) {
this.init(null, sheetName, Type.IMPORT);
return exportExcel();
}
/**
* 对list数据源将其里面的数据导入到excel表单
*
* @param sheetName 工作表的名称
* @return 结果
*/
public void importTemplateExcel(HttpServletResponse response, String sheetName) {
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setCharacterEncoding("utf-8");
response.setHeader("Content-Disposition", StrUtil.format("attachment;filename={}",
URLUtil.encode(sheetName + ".xlsx", CharsetUtil.CHARSET_UTF_8)));
this.init(null, sheetName, Type.IMPORT);
exportExcel(response);
}
public static InputStream workbookToStream(Workbook workbook) throws IOException {
try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
//创建临时文件
workbook.write(out);
byte[] bookByteAry = out.toByteArray();
return new ByteArrayInputStream(bookByteAry);
}
}
/**
* 对list数据源将其里面的数据导入到excel表单
*
* @return 结果
*/
public void exportExcel(OutputStream out) {
try {
writeSheet();
wb.write(out);
} 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 Workbook exportExcel() {
try {
writeSheet();
return wb;
} 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！");
}
}
/**
* 创建写入数据到Sheet
*/
public void writeSheet() {
// 取出一共有多少个sheet.
double sheetNo = Math.ceil(list.size() / sheetSize);
for (int index = 0; index <= sheetNo; index++) {
createSheet(sheetNo, index);
// 产生一行
Row row = sheet.createRow(0);
int column = 0;
// 写入各个字段的列头名称
for (Object[] os : fields) {
Excel excel = (Excel) os[1];
this.createCell(excel, row, column++);
}
if (Type.EXPORT.equals(type)) {
fillExcelData(index, row);
addStatisticsRow();
}
}
}
/**
* 填充excel数据
*
* @param index 序号
* @param row 单元格行
*/
public void fillExcelData(int index, Row row) {
int startNo = index * (int) sheetSize;
int endNo = Math.min(startNo + (int) sheetSize, list.size());
for (int i = startNo; i < endNo; i++) {
row = sheet.createRow(i + 1 - startNo);
// 得到导出对象.
T vo = (T) list.get(i);
int column = 0;
for (Object[] os : fields) {
Field field = (Field) os[0];
Excel excel = (Excel) os[1];
// 设置实体类私有属性可访问
field.setAccessible(true);
this.addCell(excel, row, vo, field, column++);
}
}
}
/**
* 创建表格样式
*
* @param wb 工作薄对象
* @return 样式列表
*/
private Map createStyles(Workbook wb) {
// 写入各条记录,每条记录对应excel表中的一行
Map styles = new HashMap();
CellStyle style = wb.createCellStyle();
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
style.setBorderRight(BorderStyle.THIN);
style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderLeft(BorderStyle.THIN);
style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderTop(BorderStyle.THIN);
style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderBottom(BorderStyle.THIN);
style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
Font dataFont = wb.createFont();
dataFont.setFontName("Arial");
dataFont.setFontHeightInPoints((short) 10);
style.setFont(dataFont);
styles.put("data", style);
style = wb.createCellStyle();
style.cloneStyleFrom(styles.get("data"));
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
style.setFillForegroundColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
Font headerFont = wb.createFont();
headerFont.setFontName("Arial");
headerFont.setFontHeightInPoints((short) 10);
headerFont.setBold(true);
headerFont.setColor(IndexedColors.WHITE.getIndex());
style.setFont(headerFont);
styles.put("header", style);
style = wb.createCellStyle();
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
Font totalFont = wb.createFont();
totalFont.setFontName("Arial");
totalFont.setFontHeightInPoints((short) 10);
style.setFont(totalFont);
styles.put("total", style);
style = wb.createCellStyle();
style.cloneStyleFrom(styles.get("data"));
style.setAlignment(HorizontalAlignment.LEFT);
styles.put("data1", style);
style = wb.createCellStyle();
style.cloneStyleFrom(styles.get("data"));
style.setAlignment(HorizontalAlignment.CENTER);
styles.put("data2", style);
style = wb.createCellStyle();
style.cloneStyleFrom(styles.get("data"));
style.setAlignment(HorizontalAlignment.RIGHT);
styles.put("data3", style);
return styles;
}
/**
* 创建单元格
*/
public Cell createCell(Excel attr, Row row, int column) {
// 创建列
Cell cell = row.createCell(column);
// 写入列信息
cell.setCellValue(attr.name());
setDataValidation(attr, row, column);
cell.setCellStyle(styles.get("header"));
return cell;
}
/**
* 设置单元格信息
*
* @param value 单元格值
* @param attr 注解相关
* @param cell 单元格信息
*/
public void setCellVo(Object value, Excel attr, Cell cell) {
if (ColumnType.STRING == attr.cellType()) {
cell.setCellValue(Objects.isNull(value) ? attr.defaultValue() : value + attr.suffix());
} else if (ColumnType.NUMERIC == attr.cellType()) {
if (Objects.nonNull(value)) {
cell.setCellValue(StrUtil.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 imageBase64 = Convert.toStr(value);
if (StrUtil.isNotEmpty(imageBase64)) {
byte[] data = Base64.decode(imageBase64);
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 = 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;
}
/**
* 获取文件类型
*
* @param photoByte 文件字节码
* @return 后缀（不含".")
*/
public static String getFileExtendName(byte[] photoByte) {
String strFileExtendName = "JPG";
if ((photoByte[0] == 71) && (photoByte[1] == 73) && (photoByte[2] == 70) && (photoByte[3] == 56)
&& ((photoByte[4] == 55) || (photoByte[4] == 57)) && (photoByte[5] == 97)) {
strFileExtendName = "GIF";
} else if ((photoByte[6] == 74) && (photoByte[7] == 70) && (photoByte[8] == 73) && (photoByte[9] == 70)) {
strFileExtendName = "JPG";
} else if ((photoByte[0] == 66) && (photoByte[1] == 77)) {
strFileExtendName = "BMP";
} else if ((photoByte[1] == 80) && (photoByte[2] == 78) && (photoByte[3] == 71)) {
strFileExtendName = "PNG";
}
return strFileExtendName;
}
/**
* 创建表格样式
*/
public void setDataValidation(Excel attr, Row row, int column) {
if (attr.name().indexOf("注：") >= 0) {
sheet.setColumnWidth(column, 6000);
} else {
// 设置列宽
sheet.setColumnWidth(column, (int) ((attr.width() + 0.72) * 256));
}
// 如果设置了提示信息则鼠标放上去提示.
if (StrUtil.isNotEmpty(attr.prompt())) {
// 这里默认设了2-101列提示.
setXSSFPrompt(sheet, "", attr.prompt(), 1, 100, column, column);
}
// 如果设置了combo属性则本列只能选择不能输入
if (attr.combo().length > 0) {
// 这里默认设了2-101列只能选择不能输入.
setXSSFValidation(sheet, attr.combo(), 1, 100, column, column);
}
}
/**
* 添加单元格
*/
public Cell addCell(Excel attr, Row row, T vo, Field field, int column) {
Cell cell = null;
try {
// 设置行高
row.setHeight(maxHeight);
// 根据Excel中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列.
if (attr.isExport()) {
// 创建cell
cell = row.createCell(column);
int align = attr.align().value();
cell.setCellStyle(styles.get("data" + (align >= 1 && align <= 3 ? align : "")));
// 用于读取对象中的属性
Object value = getTargetValue(vo, field, attr);
String dateFormat = attr.dateFormat();
String readConverterExp = attr.readConverterExp();
String separator = attr.separator();
if (StrUtil.isNotEmpty(dateFormat) && Objects.nonNull(value)) {
cell.setCellValue(DateUtil.format((Date) value, dateFormat));
} else if (StrUtil.isNotEmpty(readConverterExp) && Objects.nonNull(value)) {
cell.setCellValue(convertByExp(Convert.toStr(value), readConverterExp, separator));
} else if (value instanceof BigDecimal && -1 != attr.scale()) {
cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).toString());
} else {
// 设置列类型
setCellVo(value, attr, cell);
}
addStatisticsData(column, Convert.toStr(value), attr);
}
} catch (Exception e) {
log.error("导出Excel失败{}", e);
}
return cell;
}
/**
* 设置 POI XSSFSheet 单元格提示
*
* @param sheet 表单
* @param promptTitle 提示标题
* @param promptContent 提示内容
* @param firstRow 开始行
* @param endRow 结束行
* @param firstCol 开始列
* @param endCol 结束列
*/
public void setXSSFPrompt(Sheet sheet, String promptTitle, String promptContent, int firstRow, int endRow,
int firstCol, int endCol) {
DataValidationHelper helper = sheet.getDataValidationHelper();
DataValidationConstraint constraint = helper.createCustomConstraint("DD1");
CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
DataValidation dataValidation = helper.createValidation(constraint, regions);
dataValidation.createPromptBox(promptTitle, promptContent);
dataValidation.setShowPromptBox(true);
sheet.addValidationData(dataValidation);
}
/**
* 设置某些列的值只能输入预制的数据,显示下拉框.
*
* @param sheet 要设置的sheet.
* @param textlist 下拉框显示的内容
* @param firstRow 开始行
* @param endRow 结束行
* @param firstCol 开始列
* @param endCol 结束列
* @return 设置好的sheet.
*/
public void setXSSFValidation(Sheet sheet, String[] textlist, int firstRow, int endRow, int firstCol, int endCol) {
DataValidationHelper helper = sheet.getDataValidationHelper();
// 加载下拉列表内容
DataValidationConstraint constraint = helper.createExplicitListConstraint(textlist);
// 设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
// 数据有效性对象
DataValidation dataValidation = helper.createValidation(constraint, regions);
// 处理Excel兼容性问题
if (dataValidation instanceof XSSFDataValidation) {
dataValidation.setSuppressDropDownArrow(true);
dataValidation.setShowErrorBox(true);
} else {
dataValidation.setSuppressDropDownArrow(false);
}
sheet.addValidationData(dataValidation);
}
/**
* 解析导出值 0=男,1=女,2=未知
*
* @param propertyValue 参数值
* @param converterExp 翻译注解
* @param separator 分隔符
* @return 解析后值
*/
public static String convertByExp(String propertyValue, String converterExp, String separator) {
StringBuilder propertyString = new StringBuilder();
String[] convertSource = converterExp.split(",");
for (String item : convertSource) {
String[] itemArray = item.split("=");
if (StrUtil.containsAny(separator, propertyValue)) {
for (String value : propertyValue.split(separator)) {
if (itemArray[0].equals(value)) {
propertyString.append(itemArray[1] + separator);
break;
}
}
} else {
if (itemArray[0].equals(propertyValue)) {
return itemArray[1];
}
}
}
return StrUtil.strip(propertyString.toString(), null, 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 (StrUtil.containsAny(separator, propertyValue)) {
for (String value : propertyValue.split(separator)) {
if (itemArray[1].equals(value)) {
propertyString.append(itemArray[0]).append(separator);
break;
}
}
} else {
if (itemArray[1].equals(propertyValue)) {
return itemArray[0];
}
}
}
return StrUtil.strip(propertyString.toString(), null, separator);
}
/**
* 合计统计信息
*/
private void addStatisticsData(Integer index, String text, Excel entity) {
if (entity != null && entity.isStatistics()) {
Double temp = 0D;
if (!statistics.containsKey(index)) {
statistics.put(index, temp);
}
try {
temp = Double.valueOf(text);
} catch (NumberFormatException e) {
}
statistics.put(index, statistics.get(index) + temp);
}
}
/**
* 创建统计行
*/
public void addStatisticsRow() {
if (statistics.size() > 0) {
Row row = sheet.createRow(sheet.getLastRowNum() + 1);
Set 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().toString() + "_" + filename + ".xlsx";
return filename;
}
/**
* 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
*/
private Object getTargetValue(T vo, Field field, Excel excel) throws Exception {
Object o = field.get(vo);
if (StrUtil.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
*/
private Object getValue(Object o, String name) throws Exception {
if (Objects.nonNull(o) && StrUtil.isNotEmpty(name)) {
Class clazz = o.getClass();
Field field = clazz.getDeclaredField(name);
field.setAccessible(true);
o = field.get(o);
}
return o;
}
/**
* 得到所有定义字段
*/
private void createExcelField() {
this.fields = new ArrayList();
List tempFields = new ArrayList<>();
tempFields.addAll(Arrays.asList(clazz.getSuperclass().getDeclaredFields()));
tempFields.addAll(Arrays.asList(clazz.getDeclaredFields()));
for (Field field : tempFields) {
// 单注解
if (field.isAnnotationPresent(Excel.class)) {
putToField(field, field.getAnnotation(Excel.class));
}
// 多注解
if (field.isAnnotationPresent(Excels.class)) {
Excels attrs = field.getAnnotation(Excels.class);
Excel[] excels = attrs.value();
for (Excel excel : excels) {
putToField(field, excel);
}
}
}
this.fields = this.fields.stream().sorted(Comparator.comparing(objects -> ((Excel) objects[1]).sort())).collect(Collectors.toList());
this.maxHeight = getRowHeight();
}
/**
* 根据注解获取最大行高
*/
public short getRowHeight() {
double maxHeight = 0;
for (Object[] os : this.fields) {
Excel excel = (Excel) os[1];
maxHeight = Math.max(maxHeight, excel.height());
}
return (short) (maxHeight * 20);
}
/**
* 放到字段集合中
*/
private void putToField(Field field, Excel attr) {
if (attr != null && (attr.type() == Type.ALL || attr.type() == type)) {
this.fields.add(new Object[]{field, attr});
}
}
/**
* 创建一个工作簿
*/
public void createWorkbook() {
this.wb = new SXSSFWorkbook(500);
}
/**
* 创建工作表
*
* @param sheetNo sheet数量
* @param index 序号
*/
public void createSheet(double sheetNo, int index) {
this.sheet = wb.createSheet();
this.styles = createStyles(wb);
// 设置工作表的名称.
if (sheetNo == 0) {
wb.setSheetName(index, sheetName);
} else {
wb.setSheetName(index, sheetName + index);
}
}
/**
* 获取单元格值
*
* @param row 获取的行
* @param column 获取单元格列号
* @return 单元格值
*/
public Object getCellValue(Row row, int column) {
if (row == null) {
return row;
}
Object val = "";
try {
Cell cell = row.getCell(column);
if (Objects.nonNull(cell)) {
if (cell.getCellType() == CellType.NUMERIC || cell.getCellType() == CellType.FORMULA) {
val = cell.getNumericCellValue();
if (org.apache.poi.ss.usermodel.DateUtil.isCellDateFormatted(cell)) {
val = org.apache.poi.ss.usermodel.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
*/
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 getSheetPictures03(HSSFSheet sheet, HSSFWorkbook workbook) {
Map sheetIndexPicMap = new HashMap<>();
List 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() + "_" + String.valueOf(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 getSheetPictures07(XSSFSheet sheet, XSSFWorkbook workbook) {
Map sheetIndexPicMap = new HashMap<>();
for (POIXMLDocumentPart dr : sheet.getRelations()) {
if (dr instanceof XSSFDrawing) {
XSSFDrawing drawing = (XSSFDrawing) dr;
List 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;
}
}
