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();  
    }
    
}