POI解析Excel封装工具

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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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https://www.oschina.net/code/snippet_2283492_48487