POI Sax 事件驱动解析Excel2003文件

POI事件驱动解析Excel文件

package com.boguan.bte.util.excel;

import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.hssf.eventusermodel.EventWorkbookBuilder.SheetRecordCollectingListener;
import org.apache.poi.hssf.eventusermodel.FormatTrackingHSSFListener;
import org.apache.poi.hssf.eventusermodel.HSSFEventFactory;
import org.apache.poi.hssf.eventusermodel.HSSFListener;
import org.apache.poi.hssf.eventusermodel.HSSFRequest;
import org.apache.poi.hssf.eventusermodel.MissingRecordAwareHSSFListener;
import org.apache.poi.hssf.eventusermodel.dummyrecord.LastCellOfRowDummyRecord;
import org.apache.poi.hssf.eventusermodel.dummyrecord.MissingCellDummyRecord;
import org.apache.poi.hssf.model.HSSFFormulaParser;
import org.apache.poi.hssf.record.BOFRecord;
import org.apache.poi.hssf.record.BlankRecord;
import org.apache.poi.hssf.record.BoolErrRecord;
import org.apache.poi.hssf.record.BoundSheetRecord;
import org.apache.poi.hssf.record.FormulaRecord;
import org.apache.poi.hssf.record.LabelRecord;
import org.apache.poi.hssf.record.LabelSSTRecord;
import org.apache.poi.hssf.record.NumberRecord;
import org.apache.poi.hssf.record.Record;
import org.apache.poi.hssf.record.SSTRecord;
import org.apache.poi.hssf.record.StringRecord;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;

import com.boguan.bte.service.common.IExcelRowReader;

/**
* 名称: ExcelXlsReader.java<br>
* 描述: <br>
* 类型: JAVA<br>
* 最近修改时间:2016年7月5日 上午10:00:32<br>
*
* @since 2016年7月5日
* @author “”
*/
public class ExcelXlsReader implements HSSFListener {

private int minColumns = -1;

private POIFSFileSystem fs;

private int lastRowNumber;

private int lastColumnNumber;

/** Should we output the formula, or the value it has? */
private boolean outputFormulaValues = true;

/** For parsing Formulas */
private SheetRecordCollectingListener workbookBuildingListener;

// excel2003工作薄
private HSSFWorkbook stubWorkbook;

// Records we pick up as we process
private SSTRecord sstRecord;

private FormatTrackingHSSFListener formatListener;

// 表索引
private int sheetIndex = -1;

private BoundSheetRecord[] orderedBSRs;

@SuppressWarnings("unchecked")
private ArrayList boundSheetRecords = new ArrayList();

// For handling formulas with string results
private int nextRow;

private int nextColumn;

private boolean outputNextStringRecord;

// 当前行
private int curRow = 0;

// 存储行记录的容器
private List<String> rowlist = new ArrayList<String>();;

@SuppressWarnings("unused")
private String sheetName;

private IExcelRowReader rowReader;

public void setRowReader(IExcelRowReader rowReader) {
this.rowReader = rowReader;
}

/**
* 遍历excel下所有的sheet
*
* @throws IOException
*/
public void process(String fileName) throws IOException {
this.fs = new POIFSFileSystem(new FileInputStream(fileName));
MissingRecordAwareHSSFListener listener = new MissingRecordAwareHSSFListener(this);
formatListener = new FormatTrackingHSSFListener(listener);
HSSFEventFactory factory = new HSSFEventFactory();
HSSFRequest request = new HSSFRequest();
if (outputFormulaValues) {
request.addListenerForAllRecords(formatListener);
} else {
workbookBuildingListener = new SheetRecordCollectingListener(formatListener);
request.addListenerForAllRecords(workbookBuildingListener);
}
factory.processWorkbookEvents(request, fs);
}

/**
* HSSFListener 监听方法，处理 Record
*/
@SuppressWarnings("unchecked")
public void processRecord(Record record) {
int thisRow = -1;
int thisColumn = -1;
String thisStr = null;
String value = null;
switch (record.getSid()) {
case BoundSheetRecord.sid:
boundSheetRecords.add(record);
break;
case BOFRecord.sid:
BOFRecord br = (BOFRecord) record;
if (br.getType() == BOFRecord.TYPE_WORKSHEET) {
// 如果有需要，则建立子工作薄
if (workbookBuildingListener != null && stubWorkbook == null) {
stubWorkbook = workbookBuildingListener.getStubHSSFWorkbook();
}

sheetIndex++;
if (orderedBSRs == null) {
orderedBSRs = BoundSheetRecord.orderByBofPosition(boundSheetRecords);
}
sheetName = orderedBSRs[sheetIndex].getSheetname();
}
break;

case SSTRecord.sid:
sstRecord = (SSTRecord) record;
break;

case BlankRecord.sid:
BlankRecord brec = (BlankRecord) record;
thisRow = brec.getRow();
thisColumn = brec.getColumn();
thisStr = "";
rowlist.add(thisColumn, thisStr);
break;
case BoolErrRecord.sid: // 单元格为布尔类型
BoolErrRecord berec = (BoolErrRecord) record;
thisRow = berec.getRow();
thisColumn = berec.getColumn();
thisStr = berec.getBooleanValue() + "";
rowlist.add(thisColumn, thisStr);
break;

case FormulaRecord.sid: // 单元格为公式类型
FormulaRecord frec = (FormulaRecord) record;
thisRow = frec.getRow();
thisColumn = frec.getColumn();
if (outputFormulaValues) {
if (Double.isNaN(frec.getValue())) {
// Formula result is a string
// This is stored in the next record
outputNextStringRecord = true;
nextRow = frec.getRow();
nextColumn = frec.getColumn();
} else {
thisStr = formatListener.formatNumberDateCell(frec);
}
} else {
thisStr = '"' + HSSFFormulaParser.toFormulaString(stubWorkbook, frec.getParsedExpression()) + '"';
}
rowlist.add(thisColumn, thisStr);
break;
case StringRecord.sid:// 单元格中公式的字符串
if (outputNextStringRecord) {
// String for formula
StringRecord srec = (StringRecord) record;
thisStr = srec.getString();
thisRow = nextRow;
thisColumn = nextColumn;
outputNextStringRecord = false;
}
break;
case LabelRecord.sid:
LabelRecord lrec = (LabelRecord) record;
curRow = thisRow = lrec.getRow();
thisColumn = lrec.getColumn();
value = lrec.getValue().trim();
value = value.equals("") ? " " : value;
this.rowlist.add(thisColumn, value);
break;
case LabelSSTRecord.sid: // 单元格为字符串类型
LabelSSTRecord lsrec = (LabelSSTRecord) record;
curRow = thisRow = lsrec.getRow();
thisColumn = lsrec.getColumn();
if (sstRecord == null) {
rowlist.add(thisColumn, " ");
} else {
value = sstRecord.getString(lsrec.getSSTIndex()).toString().trim();
value = value.equals("") ? " " : value;
rowlist.add(thisColumn, value);
}
break;
case NumberRecord.sid: // 单元格为数字类型
NumberRecord numrec = (NumberRecord) record;
curRow = thisRow = numrec.getRow();
thisColumn = numrec.getColumn();
value = formatListener.formatNumberDateCell(numrec).trim();
value = value.equals("") ? " " : value;
// 向容器加入列值
rowlist.add(thisColumn, value);
break;
default:
break;
}

// 遇到新行的操作
if (thisRow != -1 && thisRow != lastRowNumber) {
lastColumnNumber = -1;
}

// 空值的操作
if (record instanceof MissingCellDummyRecord) {
MissingCellDummyRecord mc = (MissingCellDummyRecord) record;
curRow = thisRow = mc.getRow();
thisColumn = mc.getColumn();
rowlist.add(thisColumn, " ");
}

// 更新行和列的值
if (thisRow > -1)
lastRowNumber = thisRow;
if (thisColumn > -1)
lastColumnNumber = thisColumn;

// 行结束时的操作
if (record instanceof LastCellOfRowDummyRecord) {
if (minColumns > 0) {
// 列值重新置空
if (lastColumnNumber == -1) {
lastColumnNumber = 0;
}
}
lastColumnNumber = -1;

// 每行结束时， 调用getRows() 方法
rowReader.getRows(sheetIndex, curRow, rowlist);
// 清空容器
rowlist.clear();
}
}

　　

public static void main(String[] args) {
IExcelRowReader rowReader = new ExcelRowReader();
try {
// ExcelReaderUtil.readExcel(rowReader,
// "E://2016-07-04-011940a.xls");
System.out.println("**********************************************");
ExcelReaderUtil.readExcel(rowReader, "E://test.xlsx");
} catch (Exception e) {
e.printStackTrace();
}
}

}

辅助类ExcelReaderUtil：

package com.boguan.bte.util.excel;

import com.boguan.bte.service.common.IExcelRowReader;
import com.boguan.bte.service.common.impl.ExcelRowReader;

/**
* 名称: ExcelReaderUtil.java<br>
* 描述: <br>
* 类型: JAVA<br>
* 最近修改时间:2016年7月5日 上午10:10:20<br>
*
* @since 2016年7月5日
* @author “”
*/
public class ExcelReaderUtil {
// excel2003扩展名
public static final String EXCEL03_EXTENSION = ".xls";
// excel2007扩展名
public static final String EXCEL07_EXTENSION = ".xlsx";

/**
* 读取Excel文件，可能是03也可能是07版本
*
* @param excel03
* @param excel07
* @param fileName
* @throws Exception
*/
public static void readExcel(IExcelRowReader reader, String fileName) throws Exception {
// 处理excel2003文件
if (fileName.endsWith(EXCEL03_EXTENSION)) {
ExcelXlsReader exceXls = new ExcelXlsReader();
exceXls.setRowReader(reader);
exceXls.process(fileName);
// 处理excel2007文件
} else if (fileName.endsWith(EXCEL07_EXTENSION)) {
ExcelXlsxReader exceXlsx = new ExcelXlsxReader();
exceXlsx.setRowReader(reader);
exceXlsx.process(fileName);
} else {
throw new Exception("文件格式错误，fileName的扩展名只能是xls或xlsx。");
}
}

/**
* 测试
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
IExcelRowReader rowReader = new ExcelRowReader();
ExcelReaderUtil.readExcel(rowReader, "E://test.xls");
}
}

package com.boguan.bte.service.common;

import java.util.List;

/**
* 名称: IRowReader.java<br>
* 描述: <br>
* 类型: JAVA<br>
* 最近修改时间:2016年7月5日 上午10:28:06<br>
*
* @since 2016年7月5日
* @author “”
*/
public interface IExcelRowReader {
/**
* 业务逻辑实现方法
*
* @param sheetIndex
* @param curRow
* @param rowlist
*/
void getRows(int sheetIndex, int curRow, List<String> rowlist);
}

package com.boguan.bte.service.common.impl;

import java.util.List;

import com.boguan.bte.service.common.IExcelRowReader;

/**
* 名称: ExcelRowReader.java<br>
* 描述: <br>
* 类型: JAVA<br>
* 最近修改时间:2016年7月5日 上午10:30:11<br>
*
* @since 2016年7月5日
* @author “”
*/
public class ExcelRowReader implements IExcelRowReader {

@Override
public void getRows(int sheetIndex, int curRow, List<String> rowlist) {
System.out.print(curRow+" ");
for (int i = 0; i < rowlist.size(); i++) {
System.out.print(rowlist.get(i)==""?"*":rowlist.get(i) + " ");
}
System.out.println();
}}