搬砖 - java读取Excel
package com.xf.common.myutils; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.PushbackInputStream; import java.text.DecimalFormat; import java.util.ArrayList; import java.util.List; import org.apache.commons.lang.StringUtils; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.openxml4j.exceptions.InvalidFormatException; import org.apache.poi.openxml4j.opc.OPCPackage; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.CellValue; import org.apache.poi.ss.usermodel.DateUtil; import org.apache.poi.ss.usermodel.FormulaEvaluator; 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.Workbook; import org.apache.poi.ss.util.CellRangeAddress; import org.apache.poi.xssf.usermodel.XSSFWorkbook; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; public class ReadExcelUtil { private Workbook workbook = null; private Sheet sheet; private Row row; private int sheetIndex = 0; private int rowIndex = 0; private int cellIndex = 0; private String file; public static ReadExcelUtil read(String file) throws IOException, InvalidFormatException { return new ReadExcelUtil(file); } public static ReadExcelUtil read(File file) throws IOException, InvalidFormatException { return new ReadExcelUtil(file.getAbsolutePath()); } public ReadExcelUtil(String pathname) throws IOException, InvalidFormatException { InputStream in = new FileInputStream(pathname); if (!in.markSupported()) { in = new PushbackInputStream(in, 8); } try { this.workbook = new HSSFWorkbook(in); } catch (Exception e) { this.workbook = new XSSFWorkbook(OPCPackage.open(in)); } if (this.workbook == null) { if (!judgeIsCSV(pathname)) { throw new IllegalArgumentException("你的excel版本目前poi解析不了"); } setFile(pathname); } else { setSheetIndex(0); } } public static void main(String[] args) throws IOException { try { String pathname = "C:\\Users\\huanglisong\\Desktop\\cb2b\\GeoIPCountryWhois.csv"; List<ArrayList<String>> list = read(pathname).setSheetIndex(0).readAllByTitle(0); for (ArrayList<String> rowArray : list) { for (String string : rowArray) { System.out.print(string + "\t"); } System.out.println(); } } catch (Exception e) { e.printStackTrace(); } } public boolean judgeIsCSV(String fileName) { return fileName.endsWith(".csv"); } public List<ArrayList<String>> readCoustom() throws FileNotFoundException, IOException { List<ArrayList<String>> excelData = new ArrayList<>(); for (int i = this.rowIndex; i < this.sheet.getPhysicalNumberOfRows(); i++) { ArrayList<String> rowArr = new ArrayList<>(); this.row = this.sheet.getRow(i); for (int j = this.cellIndex; j < this.row.getPhysicalNumberOfCells(); j++) { rowArr.add(getStringCellValue(this.row.getCell(j))); } excelData.add(rowArr); } return excelData; } public List<ArrayList<String>> readCoustomByTitle(int titleIndex) throws FileNotFoundException, IOException { Row titleRow = this.sheet.getRow(titleIndex); List<ArrayList<String>> excelData = new ArrayList<>(); for (int i = this.rowIndex; i < this.sheet.getPhysicalNumberOfRows(); i++) { ArrayList<String> rowArr = new ArrayList<>(); this.row = this.sheet.getRow(i); for (int j = this.cellIndex; j < titleRow.getPhysicalNumberOfCells(); j++) { rowArr.add(getStringCellValue(this.row.getCell(j))); } excelData.add(rowArr); } return excelData; } public List<ArrayList<String>> readCoustomExcludeNull() throws FileNotFoundException, IOException { List<ArrayList<String>> excelData = new ArrayList<>(); for (int i = this.rowIndex; i < this.sheet.getPhysicalNumberOfRows(); i++) { ArrayList<String> rowArr = new ArrayList<>(); this.row = this.sheet.getRow(i); for (int j = this.cellIndex; j < this.row.getPhysicalNumberOfCells(); j++) { String cellValue = getStringCellValue(this.row.getCell(j)); if (!cellValue.equals("")) { rowArr.add(cellValue); } } excelData.add(rowArr); } return excelData; } public List<ArrayList<String>> readAll() throws FileNotFoundException, IOException { List<ArrayList<String>> excelData = new ArrayList<>(); for (int i = 0; i < this.sheet.getPhysicalNumberOfRows(); i++) { ArrayList<String> rowArr = new ArrayList<>(); this.row = this.sheet.getRow(i); for (int j = 0; j < this.row.getPhysicalNumberOfCells(); j++) { rowArr.add(getStringCellValue(this.row.getCell(j))); } excelData.add(rowArr); } return excelData; } public List<ArrayList<String>> readAllByTitle(int titleIndex) throws FileNotFoundException, IOException { Row titleRow = this.sheet.getRow(titleIndex); System.out.println("titleRow.getPhysicalNumberOfCells() : " + titleRow.getPhysicalNumberOfCells()); List<ArrayList<String>> excelData = new ArrayList<>(); for (int i = 0; i < this.sheet.getPhysicalNumberOfRows(); i++) { ArrayList<String> rowArr = new ArrayList<>(); this.row = this.sheet.getRow(i); for (int j = 0; j < titleRow.getPhysicalNumberOfCells(); j++) { rowArr.add(getStringCellValue(this.row.getCell(j))); } excelData.add(rowArr); } return excelData; } public List<String> readTitle(int titleIndexStart, int titleIndexEnd) { List<String> rowCell = new ArrayList<>(); for (int i = 0; i < titleIndexEnd - titleIndexStart; i++) { Row titleRow = this.sheet.getRow(titleIndexStart); for (int j = 0; j < titleRow.getPhysicalNumberOfCells(); j++) { //Cell c = titleRow.getCell(j); //CellRangeAddress cra = c.getArrayFormulaRange(); rowCell.add(getStringCellValue(titleRow.getCell(j))); } } return rowCell; } public static boolean isMergedRegion(HSSFSheet sheet, int row, int column) { int sheetMergeCount = sheet.getNumMergedRegions(); for (int i = 0; i < sheetMergeCount; i++) { CellRangeAddress ca = sheet.getMergedRegion(i); int firstColumn = ca.getFirstColumn(); int lastColumn = ca.getLastColumn(); int firstRow = ca.getFirstRow(); int lastRow = ca.getLastRow(); if ((row >= firstRow) && (row <= lastRow) && (column >= firstColumn) && (column <= lastColumn)) { return true; } } return false; } public JSONArray readNextJsonByTitle(int titleIndex) throws FileNotFoundException, IOException { Row titleRow = this.sheet.getRow(titleIndex); List<String> rowCell = new ArrayList<>(); for (int i = 0; i < titleRow.getPhysicalNumberOfCells(); i++) { rowCell.add(getStringCellValue(titleRow.getCell(i))); } JSONArray array = new JSONArray(); JSONObject object = null; for (int i = titleIndex + 1; i < this.sheet.getPhysicalNumberOfRows(); i++) { object = new JSONObject(); this.row = this.sheet.getRow(i); for (int j = 0; j < titleRow.getPhysicalNumberOfCells(); j++) { if(this.row != null && this.row.getCell(j) != null) { if(StringUtils.isNotEmpty(getStringCellValue(this.row.getCell(j)))) { object.put(rowCell.get(j), getStringCellValue(this.row.getCell(j))); } } } if(object.size() != 0) { array.add(object); } } return array; } public List<ArrayList<String>> readNextByTitle(int titleIndex) throws FileNotFoundException, IOException { Row titleRow = this.sheet.getRow(titleIndex); List<ArrayList<String>> excelData = new ArrayList<>(); for (int i = titleIndex + 1; i < this.sheet.getPhysicalNumberOfRows(); i++) { ArrayList<String> rowArr = new ArrayList<>(); this.row = this.sheet.getRow(i); for (int j = 0; j < titleRow.getPhysicalNumberOfCells(); j++) { rowArr.add(getStringCellValue(this.row.getCell(j))); } excelData.add(rowArr); } return excelData; } public List<ArrayList<String>> readAllExcludeNull() throws FileNotFoundException, IOException { List<ArrayList<String>> excelData = new ArrayList<>(); for (int i = 0; i < this.sheet.getPhysicalNumberOfRows(); i++) { ArrayList<String> rowArr = new ArrayList<>(); this.row = this.sheet.getRow(i); for (int j = 0; j < this.row.getPhysicalNumberOfCells(); j++) { String cellValue = getStringCellValue(this.row.getCell(j)); if (!cellValue.equals("")) { rowArr.add(cellValue); } } excelData.add(rowArr); } return excelData; } public ArrayList<String> readRowData(int rowIndex) throws FileNotFoundException, IOException { ArrayList<String> rowDataArr = new ArrayList<>(); this.row = this.sheet.getRow(rowIndex); for (int i = 0; i < this.row.getPhysicalNumberOfCells(); i++) { String cellStr = getStringCellValue(this.row.getCell(i)); rowDataArr.add(cellStr); } return rowDataArr; } public ArrayList<String> readRowExcludeNullData(int rowIndex) throws FileNotFoundException, IOException { ArrayList<String> rowDataArr = new ArrayList<>(); this.row = this.sheet.getRow(rowIndex); for (int i = 0; i < this.row.getPhysicalNumberOfCells(); i++) { String cellValue = getStringCellValue(this.row.getCell(i)); if (!cellValue.equals("")) { rowDataArr.add(cellValue); } } return rowDataArr; } public String readCellData(int rowIndex, int cellIndex) throws FileNotFoundException, IOException { this.row = this.sheet.getRow(rowIndex); return getStringCellValue(this.row.getCell(cellIndex)); } public List<? extends PictureData> readPictures() { return this.workbook.getAllPictures(); } public static String getStringCellValue(Cell cell) { String strCell = ""; if (cell == null) { return strCell; } switch (cell.getCellType()) { case STRING: strCell = cell.getRichStringCellValue().getString().trim(); break; case NUMERIC: if (DateUtil.isCellDateFormatted(cell)) { // strCell = DateUtils.parseString("yyyy-MM-dd hh:mm:ss", // cell.getDateCellValue()); } else { strCell = String.valueOf(new DecimalFormat().format(cell.getNumericCellValue())); } break; case BOOLEAN: strCell = String.valueOf(cell.getBooleanCellValue()); break; case FORMULA: FormulaEvaluator evaluator = cell.getSheet().getWorkbook().getCreationHelper().createFormulaEvaluator(); evaluator.evaluateFormulaCell(cell); CellValue cellValue = evaluator.evaluate(cell); strCell = String.valueOf(cellValue.getNumberValue()); break; case BLANK: default: strCell = ""; } return strCell; } public ReadExcelUtil setSheetIndex(int sheetIndex) { this.sheetIndex = sheetIndex; if (this.workbook != null) { this.sheet = this.workbook.getSheetAt(sheetIndex); } return this; } public ReadExcelUtil setRowIndex(int rowIndex) { this.rowIndex = rowIndex; return this; } public ReadExcelUtil setCellIndex(int cellIndex) { this.cellIndex = cellIndex; return this; } public int getSheetCount() { return this.workbook.getNumberOfSheets(); } public String getSheetNameByIndex(int index) { return this.workbook.getSheetAt(index).getSheetName(); } public String getCurrentSheetName() { return this.workbook.getSheetAt(this.sheetIndex).getSheetName(); } public Workbook getWorkbook() { return this.workbook; } public Sheet getSheet() { return this.sheet; } public int getSheetIndex() { return this.sheetIndex; } public String getFile() { return this.file; } public void setFile(String file) { this.file = file; } }