POI读取Excel(兼容Excel2003、Excel2007)

/** * ClassName:ExcelReader.java * Author: wenbin.ji * CreateTime: Jan 28, 2011 11:16:29 AM * Description:Excel数据读取工具类，POI实现，兼容Excel2003，及Excel2007 **/ package com.company.utils; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import org.apache.poi.ss.usermodel.FormulaEvaluator; import org.apache.poi.openxml4j.exceptions.InvalidFormatException; import org.apache.poi.ss.usermodel.Cell; import org.apache.poi.ss.usermodel.DateUtil; 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; public class ExcelReader { Workbook wb = null; List dataList = new ArrayList(100); public ExcelReader(String path){ try { InputStream inp = new FileInputStream(path); wb = WorkbookFactory.create(inp); } catch (FileNotFoundException e) { e.printStackTrace(); } catch (InvalidFormatException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } /** * 取Excel所有数据，包含header * @return List */ public List getAllData(int sheetIndex){ int columnNum = 0; Sheet sheet = wb.getSheetAt(sheetIndex); if(sheet.getRow(0)!=null){ columnNum = sheet.getRow(0).getLastCellNum()-sheet.getRow(0).getFirstCellNum(); } if(columnNum>0){ for(Row row:sheet){ String[] singleRow = new String[columnNum]; int n = 0; for(int i=0;i-1){ singleRow[n] = String.valueOf(new Double(temp)).trim(); }else{ singleRow[n] = temp.trim(); } } break; case Cell.CELL_TYPE_STRING: singleRow[n] = cell.getStringCellValue().trim(); break; case Cell.CELL_TYPE_ERROR: singleRow[n] = ""; break; case Cell.CELL_TYPE_FORMULA: cell.setCellType(Cell.CELL_TYPE_STRING); singleRow[n] = cell.getStringCellValue(); if(singleRow[n]!=null){ singleRow[n] = singleRow[n].replaceAll("#N/A","").trim(); } break; default: singleRow[n] = ""; break; } n++; } if("".equals(singleRow[0])){continue;}//如果第一行为空，跳过 dataList.add(singleRow); } } return dataList; } /** * 返回Excel最大行index值，实际行数要加1 * @return */ public int getRowNum(int sheetIndex){ Sheet sheet = wb.getSheetAt(sheetIndex); return sheet.getLastRowNum(); } /** * 返回数据的列数 * @return */ public int getColumnNum(int sheetIndex){ Sheet sheet = wb.getSheetAt(sheetIndex); Row row = sheet.getRow(0); if(row!=null&&row.getLastCellNum()>0){ return row.getLastCellNum(); } return 0; } /** * 获取某一行数据 * @param rowIndex 计数从0开始，rowIndex为0代表header行 * @return */ public String[] getRowData(int sheetIndex,int rowIndex){ String[] dataArray = null; if(rowIndex>this.getColumnNum(sheetIndex)){ return dataArray; }else{ dataArray = new String[this.getColumnNum(sheetIndex)]; return this.dataList.get(rowIndex); } } /** * 获取某一列数据 * @param colIndex * @return */ public String[] getColumnData(int sheetIndex,int colIndex){ String[] dataArray = null; if(colIndex>this.getColumnNum(sheetIndex)){ return dataArray; }else{ if(this.dataList!=null&&this.dataList.size()>0){ dataArray = new String[this.getRowNum(sheetIndex)+1]; int index = 0; for(String[] rowData:dataList){ if(rowData!=null){ dataArray[index] = rowData[colIndex]; index++; } } } } return dataArray; } }