如何将excel数据读入向量表
对不起，即时通讯新的Java。 我已经将方法从JXL更改为Apache POI来读取excel文件。 现在即时通讯与Java代码挣扎。 我可以从我的vector dataholder的返回输出，它从行文件中列出所有的细节。 请，需要专家的指导。 任何帮助，将不胜感激。
我的Excel文件： Banklist.xlsx
JSP代码
<jsp:useBean id="mySmartUpload" scope="page" class="com.jspsmart.upload.SmartUpload" /> <jsp:useBean id="ReadXLSXFile" scope="page" class="com.rexit.easc.ReadXLSXFile" /> if(sType.equalsIgnoreCase("READ_EXCEL")) { SimpleDateFormat timestampFormat = new SimpleDateFormat("yyyyMMdd"); String currDATE = timestampFormat.format(new Date()); mySmartUpload.initialize(pageContext); mySmartUpload.setTotalMaxFileSize(1000000); mySmartUpload.upload(); String upload_path = ""; FileInputStream is = new FileInputStream("/home/config.prop"); Properties prop = new Properties(); prop.load(is); upload_path = prop.getProperty("upload_path"); String FILE_NAME = ""; try { for (int i=0;i<mySmartUpload.getFiles().getCount();i++) { com.jspsmart.upload.File myFile = mySmartUpload.getFiles().getFile(i); if (!myFile.isMissing()) { FILE_NAME = myFile.getFileName(); FILE_NAME = SESUSERID+"_"+currDATE+"_"+FILE_NAME; myFile.saveAs(upload_path +"//"+FILE_NAME,mySmartUpload.SAVE_PHYSICAL); } } } catch (Exception e) { e.printStackTrace(); } String ATTACH_FILE = FILE_NAME; vTable = new Vector(); Vector dataHolder=ReadXLSXFile.importExcelSheet(upload_path+"//"+ATTACH_FILE); for (int i=0;i<dataHolder.size();i++) { Vector vTableRow = (Vector)dataHolder.elementAt(i); if(vTableRow.size()>=4) { String sSEQ_NO = (String) vTableRow.elementAt(0); String sUNIT_NO = (String) vTableRow.elementAt(1); String sOWNER_NAME = (String) vTableRow.elementAt(2); String sOWNER_NAME2 = (String) vTableRow.elementAt(3); String sMORTGAGEE_NAME = (String) vTableRow.elementAt(4); String sBANK_REF = (String) vTableRow.elementAt(5); intSeqNo = vTable.size(); if(!sOWNER_NAME.equals("")) { intSeqNo += 1; SERIAL = df.format(intSeqNo); Vector vRecord = new Vector(); vRecord.addElement(Integer.toString(i+1)); vRecord.addElement(Integer.toString(i+1)); vRecord.addElement(sUNIT_NO); vRecord.addElement(sOWNER_NAME.toUpperCase()); vRecord.addElement(sOWNER_NAME2.toUpperCase()); vRecord.addElement(sMORTGAGEE_NAME.toUpperCase()); vRecord.addElement(sBANK_REF); vRecord.addElement(SERIAL); vTable.addElement(vRecord); } else { break; } } } %>
我怀疑我在java文件中的编码是错误的。
ReadXLSXFile.java
package com.rexit.easc; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.util.Iterator; import java.util.Vector; 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.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; import org.apache.poi.xssf.usermodel.XSSFSheet; import org.apache.poi.xssf.usermodel.XSSFWorkbook; public class ReadXLSXFile { public Vector importExcelSheet(String fileName) { Vector cellVectorHolder = new Vector(); try { Workbook workBook = WorkbookFactory.create(new FileInputStream(fileName)); Sheet sheet = workBook.getSheetAt(0); Iterator rowIter = sheet.rowIterator(); while(rowIter.hasNext()) { XSSFRow row = (XSSFRow) rowIter.next(); Iterator cellIter = row.cellIterator(); Vector cellStoreVector=new Vector(); while(cellIter.hasNext()) { XSSFCell cell = (XSSFCell) cellIter.next(); cellStoreVector.addElement(cell); } cellVectorHolder.addElement(cellStoreVector); } } catch (Exception e) { System.out.println(e.getMessage()); } return cellVectorHolder; } }
当我尝试阅读Excel文件时，它显示如下错误消息： 
你在这一行中得到exception cellStoreVector.addElement(cell); ？ 你添加一个XSSFCell ，我认为这个element必须是一个String而不是一个Cell 。
这是一个工作的例子：
import java.io.FileInputStream; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Iterator; import java.util.Vector; import org.apache.poi.hssf.usermodel.HSSFDateUtil; 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.xssf.usermodel.XSSFCell; import org.apache.poi.xssf.usermodel.XSSFRow; public class ReadXLSXFile { public Vector<Vector<String>> importExcelSheet(String fileName) { Vector<Vector<String>> cellVectorHolder = new Vector<>(); try { Workbook workBook = WorkbookFactory.create(new FileInputStream(fileName)); Sheet sheet = workBook.getSheetAt(0); Iterator rowIter = sheet.rowIterator(); while (rowIter.hasNext()) { XSSFRow row = (XSSFRow) rowIter.next(); Iterator cellIter = row.cellIterator(); Vector<String> cellStoreVector = new Vector<>(); while (cellIter.hasNext()) { XSSFCell cell = (XSSFCell) cellIter.next(); String cellTypeDesc = ""; String cellValue = ""; Integer cellType = cell.getCellType(); switch (cellType) { case 0: cellTypeDesc = "NUMERIC"; Double doubleValue = cell.getNumericCellValue(); if (HSSFDateUtil.isCellDateFormatted(cell)) { if (HSSFDateUtil.isValidExcelDate(doubleValue)) { Date date = HSSFDateUtil.getJavaDate(doubleValue); DateFormat df = new SimpleDateFormat("dd/MM/yyyy"); cellValue = df.format(date); System.err.println(cellValue); } } else { Integer intValue = doubleValue.intValue(); cellValue = String.valueOf(intValue); } break; case 1: cellTypeDesc = "STRING"; cellValue = cell.getStringCellValue(); break; case 2: cellTypeDesc = "FORMULA"; cellValue = cell.getCellFormula(); break; case 3: cellTypeDesc = "BLANK"; cellValue = "BLANK"; break; case 4: cellTypeDesc = "BOOLEAN"; boolean booleanValue = cell.getBooleanCellValue(); cellValue = "" + booleanValue; break; case 5: cellTypeDesc = "ERROR"; byte byteValue = cell.getErrorCellValue(); cellValue = "" + byteValue; break; } cellStoreVector.addElement(cellValue); } cellVectorHolder.addElement(cellStoreVector); } } catch (Exception e) { System.out.println(e.getMessage()); } return cellVectorHolder; } }
和testing：
public static void main(String[] args) { ReadXLSXFile xls = new ReadXLSXFile(); Vector<Vector<String>> vect = xls.importExcelSheet("c:/test_doc.xlsx"); for (Vector<String> v : vect) { for (String s : v) { System.out.println(s); } } }
我也需要添加：xmlbeans-5.1.3.jar dom4j.jar
我发现一个简单的解决scheme，将cell转换为string
cellStoreVector.addElement(cell+"");