POI解析Excel封装类代码,Java代码库,德仔网

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【Java】 POI解析Excel封装类
作者:Gilbert / 发布于2015/6/2/ 647

	package com.rf.dtd.systemsupport.dataImport.common;
	
	import com.rf.dtd.datacommons.JsonUtil;
	import java.io.File;
	import java.io.FileInputStream;
	import java.io.InputStream;
	import java.math.BigDecimal;
	import java.text.SimpleDateFormat;
	import java.util.ArrayList;
	import java.util.Date;
	import java.util.HashMap;
	import java.util.LinkedHashMap;
	import java.util.List;
	import java.util.Map;
	import java.util.Arrays;
	import java.util.regex.Matcher;
	import java.util.regex.Pattern;
	
	import org.apache.poi.hssf.usermodel.HSSFCellStyle;
	import org.apache.poi.hssf.util.PaneInformation;
	import org.apache.poi.ss.usermodel.Cell;
	import org.apache.poi.ss.usermodel.CellStyle;
	import org.apache.poi.ss.usermodel.DateUtil;
	import org.apache.poi.ss.usermodel.Font;
	import org.apache.poi.ss.usermodel.IndexedColors;
	import org.apache.poi.ss.usermodel.Row;
	import org.apache.poi.ss.usermodel.Sheet;
	import org.apache.poi.ss.usermodel.Workbook;
	import org.apache.poi.ss.usermodel.WorkbookFactory;
	import org.apache.poi.ss.util.CellRangeAddress;
	import org.apache.poi.ss.util.CellReference;
	import org.apache.poi.xssf.usermodel.XSSFCellStyle;
	
	/**
	* 主要提供对Excel的各种处理,侧重点是取数据
	*
	* @author 李元元
	*
	*/
	public class POIExcelUtil {
	
	 static SimpleDateFormat sFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	 static short[] yyyyMMdd = {14, 31, 57, 58, 179, 184, 185, 186, 187, 188};
	 static short[] HHmmss = {20, 32, 190, 191, 192};
	 static List<short[]> yyyyMMddList = Arrays.asList(yyyyMMdd);
	 static List<short[]> hhMMssList = Arrays.asList(HHmmss);
	
	 /**
	 * 根据路径,获取WorkBook对象
	 *
	 * @param filePath 文件路径
	 * @return workbook
	 * @throws Exception
	 */
	 public static Workbook getExcelWorkbook(String filePath) throws Exception {
	 Workbook workbook = null;
	 File file = new File(filePath);
	 if (file.exists()) {
	 workbook = getWorkBookByStream(new FileInputStream(file));
	 }
	 return workbook;
	 }
	
	 /**
	 * 根据输入流ins获取WorkBook对象
	 *
	 * @param ins 输入流
	 * @return workbook
	 * @throws Exception
	 */
	 public static Workbook getWorkBookByStream(InputStream ins) throws Exception {
	 return WorkbookFactory.create(ins);
	 }
	
	 /**
	 * 根据Workbook,sheetIndex获取sheet对象
	 *
	 * @param book WorkBook对象
	 * @param number sheetIndex ,从1开始
	 * @return sheet
	 * @throws Exception
	 */
	 public static Sheet getSheetByNum(Workbook book, int number) throws Exception {
	 return book.getSheetAt(number - 1);
	 }
	
	 /**
	 * 根据 Workbook对象返回该Workbook对象中所有sheet的Map数组.
	 *
	 * @param book
	 * @return Map<sheetIndex , sheetName>
	 * @throws Exception
	 */
	 public static Map<Integer, String> getSheetNameByBook(Workbook book) throws Exception {
	 Map<Integer, String> map = new LinkedHashMap<Integer, String>();
	 int sheetNum = book.getNumberOfSheets();
	 for (int indexSheet = 1; indexSheet <= sheetNum; indexSheet++) {
	 Sheet sheet = getSheetByNum(book, indexSheet);
	 map.put(indexSheet, sheet.getSheetName());
	 }
	 return map;
	 }
	
	 /**
	 * 获取workbook数据Map集合
	 *
	 * @param book
	 * @return Map<Integer, List<List<String>>> @
	 * throws Exception
	 */
	 public static Map<Integer, List<List<String>>> getWorkbookDatas(Workbook book) throws Exception {
	 Map<Integer, List<List<String>>> bookdatas = new HashMap<Integer, List<List<String>>>();
	 int sheetNum = book.getNumberOfSheets();
	 for (int indexSheet = 1; indexSheet <= sheetNum; indexSheet++) {
	 Sheet sheet = getSheetByNum(book, indexSheet);
	 bookdatas.put(indexSheet, getSheetDataList(sheet));
	 }
	 return bookdatas;
	 }
	
	 /**
	 * 获取sheet中的数据
	 *
	 * @param sheet
	 * @return List<List<String>> @
	 * throws Exception
	 */
	 public static List<List<String>> getSheetDataList(Sheet sheet) throws Exception {
	 List<List<String>> sheetdatas = new ArrayList<List<String>>();
	 //需要先合并单元格数据
	 mergedRegion(sheet);
	 int lastRowNum = getRowNum(sheet);
	 int lastCellNum = getColumnNum(sheet);
	 for (int i = 0; i < lastRowNum; i++) {
	 Row row = sheet.getRow(i);
	 sheetdatas.add(getRowDataList(sheet, row, lastCellNum));
	 }
	 return sheetdatas;
	 }
	
	 /**
	 * 获取的数据对象是符合easyui格式的标准JSON对象数据集[{A:x,B:xx,C:xxx},{A:x,B:xx,C:xxx}]
	 *
	 * @param sheet
	 * @return
	 */
	 public static List<Map<String, String>> getSheetDataMap(Sheet sheet) {
	 List<Map<String, String>> sheetdatas = new ArrayList<Map<String, String>>();
	 int lastRowNum = getRowNum(sheet);
	 Row row;
	 for (int i = 0; i < lastRowNum; i++) {
	 row = sheet.getRow(i);
	 Map<String, String> map = getRowDataMap(sheet, row);
	 if (!map.isEmpty()) {
	 sheetdatas.add(map);
	 }
	 }
	 return sheetdatas;
	 }
	
	 /**
	 * 获取的数据对象是符合dHtml格式的非标准JSON对象数据集[{id:1 , data:[x,xx,xxx]},{id:2
	 * ,data:[x,xx,xxx]}]
	 *
	 * @param sheet
	 * @return
	 */
	 public static List<Map<String, Object>> getSheetDataMapAndId(Sheet sheet) throws Exception {
	 List<Map<String, Object>> sheetdatas = new ArrayList<Map<String, Object>>();
	 List<List<String>> sheetLists = getSheetDataList(sheet);
	 for (int i = 0; i < sheetLists.size(); i++) {
	 Map<String, Object> dataMap = new HashMap<String, Object>();
	 dataMap.put("id", i);
	 dataMap.put("data", sheetLists.get(i));
	 sheetdatas.add(dataMap);
	 }
	 return sheetdatas;
	 }
	
	 /**
	 * 读取一行的数据,返回的是数据集合List,[x,xx,xxx]
	 *
	 * @param row
	 */
	 public static List<String> getRowDataList(Sheet sheet, Row row, int lastCellNum) {
	 List<String> rowdatas = new ArrayList<String>();
	 if (row == null) {
	 for (int i = 0; i < lastCellNum; i++) {
	 rowdatas.add("");
	 }
	 } else {
	 for (int i = 0; i < lastCellNum; i++) {
	 rowdatas.add(getCellData(row.getCell(i)));
	 }
	 }
	 return rowdatas;
	 }
	
	 /**
	 * 获取一行的数据集合,体现的是Map<String , String>{A:x,B:xx,C:xxx}
	 *
	 * @param row
	 * @return
	 */
	 public static Map<String, String> getRowDataMap(Sheet sheet, Row row) {
	 Map<String, String> rowdatas = new LinkedHashMap<String, String>();
	 String cellVaue;
	 int columnNum = 0;
	 int lastCellNum = getColumnNum(sheet);
	 for (int j = 0; j < lastCellNum; j++) {
	 cellVaue = getCellData(row.getCell(j));
	 rowdatas.put(getCharByNum(columnNum) + "", cellVaue);
	 columnNum = columnNum + 1;
	 }
	 return rowdatas;
	 }
	
	 /**
	 * 获取指定Sheet中指定一列的数据.
	 *
	 * @param sheet 指定的Sheet
	 * @param colIndex 指定的列
	 * @return
	 * @throws Exception
	 */
	 public static List<String> getColumnDataList(Sheet sheet, int colIndex) throws Exception {
	 List<String> coldatas = new ArrayList<String>();
	 int lastRowNum = getRowNum(sheet);
	 for (int i = 0; i < lastRowNum; i++) {
	 coldatas.add(getSheetCellValueWithRowIndexAndColIndex(sheet, i, colIndex));
	 }
	 return coldatas;
	 }
	
	 /**
	 * 返回指定sheet页的最大行数,例如:25,则表示下标从0...24
	 *
	 * @param book
	 * @param sheetIndex
	 * @return
	 */
	 public static int getRowNum(Sheet sheet) {
	 return sheet.getLastRowNum() + 1;
	 }
	
	 /**
	 * 返回指定sheet页的最大列数,例如:25,则表示下标从0...24
	 *
	 * @param book
	 * @param sheetIndex
	 * @return 列数
	 */
	 public static int getColumnNum(Sheet sheet) {
	 int maxclNum = 0;
	 int lastRowNum = getRowNum(sheet);
	 for (int i = 0; i < lastRowNum; i++) {
	 if (sheet.getRow(i) != null) {
	 int tempNum = sheet.getRow(i).getLastCellNum();
	 if (tempNum > maxclNum) {
	 maxclNum = tempNum;
	 }
	 }
	 }
	 return maxclNum;
	 }
	
	 /**
	 * 获取单元格的名称 按照excel常见的名称 例如A1
	 *
	 * @param int rowInt 行数 从0开始
	 * @param int columnInt 列数 从0开始
	 * @return String
	 */
	 public static String getCellName(int rowInt, int columnInt) {
	 CellReference cellReference = new CellReference(rowInt, columnInt);
	 return cellReference.formatAsString();
	 }
	
	 /**
	 * 获取指定单元格的行坐标
	 *
	 * @param cellName 例如A1
	 * @return 2
	 */
	 public static int getCellRowIndex(String cellName) {
	 CellReference cellReference = new CellReference(cellName);
	 return cellReference.getRow();
	 }
	
	 /**
	 * 获取指定单元格的列坐标
	 *
	 * @param cellName 例如A1
	 * @return 0
	 */
	 public static int getCellColIndex(String cellName) {
	 CellReference cellReference = new CellReference(cellName);
	 return cellReference.getCol();
	 }
	
	 /**
	 * 获取指定sheet中指定rowNum和cellNum的值
	 *
	 * @param sheet
	 * @param rowNum
	 * @param cellNum
	 * @return
	 * @throws Exception
	 */
	 public static String getSheetCellValueWithRowIndexAndColIndex(Sheet sheet, int rowNum, int cellNum) throws Exception {
	 Row row = sheet.getRow(rowNum);
	 Cell cell = row.getCell(cellNum);
	 return getCellData(cell);
	 }
	
	 /**
	 * 获取给定SHEET中指定单元格的值
	 *
	 * @param sheet 指定SHEET
	 * @param cellName 格式为：A1,B3
	 * @return
	 */
	 public static String getSheetCellValueWithCellName(Sheet sheet, String cellName) {
	 CellReference cellReference = new CellReference(cellName);
	 Row row = sheet.getRow(cellReference.getRow());
	 Cell cell = row.getCell(cellReference.getCol());
	 return getCellData(cell);
	 }
	
	 /**
	 * 获得cell单元格的TypeNumber,范围是0~5
	 *
	 * @param cell
	 * @return
	 */
	 public static int getColumnTypeNumber(Cell cell) {
	 if (cell != null) {
	 int type = cell.getCellType();
	 return type;
	 }
	 return -1;
	 }
	
	 /**
	 * 获取指定Sheet页 所有合并单元格数据信息
	 *
	 * @param sheet
	 * @return List<Map<String, String>>
	 */
	 public static List<Map<String, String>> getSheetRegion(Sheet sheet) {
	 List<Map<String, String>> list = new ArrayList<Map<String, String>>();
	 //合并的单元格数量
	 int merged = sheet.getNumMergedRegions();
	 //预读合并的单元格
	 for (int i = 0; i < merged; i++) {
	 CellRangeAddress range = sheet.getMergedRegion(i);
	 Map<String, String> map = new LinkedHashMap<String, String>();
	 int colstart = range.getFirstColumn();
	 int colend = range.getLastColumn();
	 int rowstart = range.getFirstRow();
	 int rowend = range.getLastRow();
	 map.put("colstart", colstart + "");
	 map.put("colend", colend + "");
	 map.put("rowstart", rowstart + "");
	 map.put("rowend", rowend + "");
	 map.put("field", getCharByNum(colstart));
	 map.put("colspan", (colend - colstart + 1) + "");
	 map.put("rowspan", (rowend - rowstart + 1) + "");
	 map.put("index", rowstart + "");
	 list.add(map);
	 }
	 return list;
	 }
	
	 /**
	 * 获取sheet中指定column的列宽度,这里的宽度是近似宽度,不是很精确
	 *
	 * @param sheet
	 * @param cloumI
	 * @return
	 */
	 public static int getColumnWidth(Sheet sheet, int cloumI) {
	 return new BigDecimal(sheet.getColumnWidth(cloumI) * 37 / 1200).setScale(0, BigDecimal.ROUND_HALF_UP).intValue();
	 }
	
	 /**
	 * 获取sheet中指定column的列宽度集合,这里的宽度是近似宽度,不是很精确
	 *
	 * @param sheet
	 * @return
	 */
	 public static List<Integer> getColumnWidths(Sheet sheet) {
	 List<Integer> columnWidths = new ArrayList<Integer>();
	 int lastCellNum = getColumnNum(sheet);
	 for (int i = 0; i < lastCellNum; i++) {
	 columnWidths.add(new BigDecimal(sheet.getColumnWidth(i) * 37 / 1200).setScale(0, BigDecimal.ROUND_HALF_UP).intValue());
	 }
	 return columnWidths;
	 }
	
	 /**
	 * 获取一个Sheet的冻结信息,包括冻结列和冻结行
	 *
	 * @param sheet
	 * @return
	 * @throws Exception
	 */
	 public static Map<String, Short> getSheetFrazenColAndRow(Sheet sheet) throws Exception {
	 Map<String, Short> frazenMap = new HashMap<String, Short>();
	 PaneInformation paneInformation = sheet.getPaneInformation();
	 if (paneInformation != null) {
	 //有多少列是冻结的
	 frazenMap.put("freezeCol", paneInformation.getVerticalSplitLeftColumn());
	 //有多少行是冻结
	 frazenMap.put("freezeRow", paneInformation.getHorizontalSplitTopRow());
	 }
	 return frazenMap;
	 }
	
	 /**
	 * 获取单元中值(字符串类型)
	 *
	 * @param cell
	 * @return
	 */
	 public static String getCellData(Cell cell) {
	 String cellValue = "";
	 if (cell != null) {
	 try {
	 switch (cell.getCellType()) {
	 case Cell.CELL_TYPE_BLANK://空白
	 cellValue = "";
	 break;
	 case Cell.CELL_TYPE_NUMERIC: //数值型 0----日期类型也是数值型的一种
	 if (DateUtil.isCellDateFormatted(cell)) {
	 short format = cell.getCellStyle().getDataFormat();
	
	 if (yyyyMMddList.contains(format)) {
	 sFormat = new SimpleDateFormat("yyyy-MM-dd");
	 } else if (hhMMssList.contains(format)) {
	 sFormat = new SimpleDateFormat("HH:mm:ss");
	 }
	 Date date = cell.getDateCellValue();
	 cellValue = sFormat.format(date);
	 } else {
	 Double numberDate = new BigDecimal(cell.getNumericCellValue()).setScale(4, BigDecimal.ROUND_HALF_UP).doubleValue();
	 cellValue = numberDate + "";
	 }
	 break;
	 case Cell.CELL_TYPE_STRING: //字符串型 1
	 cellValue = replaceBlank(cell.getStringCellValue());
	 break;
	 case Cell.CELL_TYPE_FORMULA: //公式型 2
	 cell.setCellType(Cell.CELL_TYPE_STRING);
	 cellValue = replaceBlank(cell.getStringCellValue());
	 break;
	 case Cell.CELL_TYPE_BOOLEAN: //布尔型 4
	 cellValue = String.valueOf(cell.getBooleanCellValue());
	 break;
	 case Cell.CELL_TYPE_ERROR: //错误 5
	 cellValue = "!#REF!";
	 break;
	 }
	 } catch (Exception e) {
	 System.out.println("读取Excel单元格数据出错：" + e.getMessage());
	 return cellValue;
	 }
	 }
	 return cellValue;
	 }
	
	 public static String replaceBlank(String source) {
	 String dest = "";
	 if (source != null) {
	 Pattern p = Pattern.compile("\\s*|\t|\r|\n");
	 Matcher m = p.matcher(source);
	 dest = m.replaceAll("");
	 }
	 return dest;
	 }
	
	 /**
	 * 给SHEET某一个单元格赋值
	 *
	 * @param sheet 指定单元格
	 * @param rowNum 行号
	 * @param cellNum 列号
	 * @param value 值
	 */
	 public static void setCellValue(Sheet sheet, int rowNum, int cellNum, String value) {
	 Row row = sheet.getRow(rowNum);
	 Cell cell = row.getCell(cellNum);
	 if (cell == null) {
	 row.createCell(cellNum).setCellValue(value);
	 } else {
	 cell.setCellValue(value);
	 }
	 }
	
	 public static void mergedRegion(Sheet sheet) throws Exception {
	 //合并的单元格数量
	 int merged = sheet.getNumMergedRegions();
	 //预读合并的单元格
	 for (int i = 0; i < merged; i++) {
	 CellRangeAddress range = sheet.getMergedRegion(i);
	 int y0 = range.getFirstRow();
	 int x0 = range.getFirstColumn();
	 int y1 = range.getLastRow();
	 int x1 = range.getLastColumn();
	
	 String value = getSheetCellValueWithRowIndexAndColIndex(sheet, y0, x0);
	
	 for (int m = y0; m <= y1; m++) {
	 for (int n = x0; n <= x1; n++) {
	 setCellValue(sheet, m, n, value);
	 }
	 }
	 }
	 }
	
	 /**
	 * 生成表头名称,A,B,C,D...
	 *
	 * @param number
	 * @return
	 */
	 public static String getCharByNum(int number) {
	 int index = number / 26 - 1;
	 if (index < 0) {
	 return (char) (65 + number % 26) + "";
	 } else if (index >= 0) {
	 return (char) (65 + index) + "" + (char) (65 + number % 26) + "";
	 }
	 return "@";
	 }
	
	 /**
	 * 补全String字符串,
	 *
	 * @param str 字符窜
	 * @param len 长度
	 * @param pre 补全字符
	 * @return 补全之后的字符串
	 */
	 public static String preFillString(String str, int len, char pre) {
	 int length = len - str.length();
	 for (int i = 0; i < length; i++) {
	 str = pre + str;
	 }
	 return str;
	 }
	
	 /**
	 * 获取颜色的HTML表示方式,
	 *
	 * @param str getHexString()
	 * @return
	 */
	 public static String getColorByHex(String str) {
	 String[] hexString = str.split(":");
	 String colorRGB = "";
	 for (int i = 0; i < hexString.length; i++) {
	 hexString[i] = preFillString(hexString[i], 4, '0');
	 colorRGB += hexString[i].substring(0, 2);
	 }
	 if ("000000".equals(colorRGB)) {
	 colorRGB = "";
	 }
	 return colorRGB;
	 }
	
	 /**
	 * 获取颜色
	 *
	 * @param shortColor
	 * @return
	 */
	 public static String getColorByShortColor(short shortColor) {
	 String returnColor = "";
	 for (IndexedColors color : IndexedColors.values()) {
	 if (shortColor == color.getIndex()) {
	 returnColor = color.toString();
	 }
	 }
	 if ("AUTOMATIC".equals(returnColor)) {
	 returnColor = "";
	 }
	 return returnColor;
	 }
	
	 /**
	 * 获取Sheet中所有单元格样式合集
	 *
	 * @param sheet
	 * @return
	 * @throws Exception
	 */
	 public static List<Map<String, Object>> getSheetCellStyleMaps(Sheet sheet) throws Exception {
	 List<Map<String, Object>> sheetCellStyles = new ArrayList<Map<String, Object>>();
	 int lastRowNum = getRowNum(sheet);
	 Row row;
	 for (int i = 0; i < lastRowNum; i++) {
	 row = sheet.getRow(i);
	 if (row == null) {
	 continue;
	 }
	 int columnNumMax = getColumnNum(sheet);
	 for (int j = 0; j < columnNumMax; j++) {
	 Cell cell = row.getCell(j);
	 if (cell == null) {
	 continue;
	 }
	 Map<String, Object> cellMap = getCellStyleMap(sheet, cell);
	 cellMap.put("y", i);
	 cellMap.put("x", j);
	 sheetCellStyles.add(cellMap);
	 }
	 }
	 return sheetCellStyles;
	 }
	
	 /**
	 * 获取Sheet中,某一个Cell的样式,Cell的背景颜色单独去取,借助于HSSFSheet和XSSFSheet
	 *
	 * @param sheet
	 * @param cell
	 * @return
	 */
	 public static Map<String, Object> getCellStyleMap(Sheet sheet, Cell cell) {
	 Map<String, Object> cellStyleMap = new HashMap<String, Object>();
	
	 Short alignShort = cell.getCellStyle().getAlignment();
	 String alignment = "c";
	 if (alignShort == 1) {
	 alignment = "l";
	 } else if (alignShort == 3) {
	 alignment = "r";
	 }
	
	 CellStyle cellStyle = cell.getCellStyle();
	 Workbook workbook = sheet.getWorkbook();
	 Font font = workbook.getFontAt(cellStyle.getFontIndex());
	 cellStyleMap.put("fontColor", getColorByShortColor(font.getColor()));
	 cellStyleMap.put("fontBold", font.getBoldweight());
	 cellStyleMap.put("fontSize", font.getFontHeightInPoints());
	 cellStyleMap.put("alignment", alignment);
	 try {
	 HSSFCellStyle hSSFCellStyle = (HSSFCellStyle) cell.getCellStyle();
	 cellStyleMap.put("cellColor", getColorByHex(hSSFCellStyle.getFillForegroundColorColor().getHexString()));
	 } catch (Exception e) {
	 XSSFCellStyle xSSFCellStyle = (XSSFCellStyle) cell.getCellStyle();
	 String xssfCellColor = "";
	 if (xSSFCellStyle.getFillBackgroundColorColor() != null) {
	 xssfCellColor = xSSFCellStyle.getFillForegroundColorColor().getARGBHex().substring(2);
	 }
	 xssfCellColor = "000000".equals(xssfCellColor) ? "" : xssfCellColor;
	 cellStyleMap.put("cellColor", xssfCellColor);
	 }
	 return cellStyleMap;
	 }
	
	 public static void main(String[] args) throws Exception {
	 Workbook workbook = getExcelWorkbook("D:/test/aa.xlsx");
	 Sheet sheet = getSheetByNum(workbook, 1);
	 System.out.println(JsonUtil.toJsonString(getSheetDataMapAndId(sheet)));
	 }
	}
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