com.nikoo28.excel.parser.ExcelParser.java Source code

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Here is the source code for com.nikoo28.excel.parser.ExcelParser.java

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/*
 * Copyright 2014 Nikhil Lohia
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.nikoo28.excel.parser;

import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;

public class ExcelParser {

    private static final Log LOG = LogFactory.getLog(ExcelParser.class);
    private StringBuilder currentString = null;
    private long bytesRead = 0;

    public String parseExcelData(InputStream is) {
        try {
            HSSFWorkbook workbook = new HSSFWorkbook(is);

            // Taking first sheet from the workbook
            HSSFSheet sheet = workbook.getSheetAt(0);

            // Iterate through each rows from first sheet
            Iterator<Row> rowIterator = sheet.iterator();
            currentString = new StringBuilder();
            while (rowIterator.hasNext()) {
                Row row = rowIterator.next();

                // For each row, iterate through each columns
                Iterator<Cell> cellIterator = row.cellIterator();

                while (cellIterator.hasNext()) {

                    Cell cell = cellIterator.next();

                    switch (cell.getCellType()) {
                    case Cell.CELL_TYPE_BOOLEAN:
                        bytesRead++;
                        currentString.append(cell.getBooleanCellValue() + "\t");
                        break;

                    case Cell.CELL_TYPE_NUMERIC:
                        bytesRead++;
                        currentString.append(cell.getNumericCellValue() + "\t");
                        break;

                    case Cell.CELL_TYPE_STRING:
                        bytesRead++;
                        currentString.append(cell.getStringCellValue() + "\t");
                        break;

                    }
                }
                currentString.append("\n");
            }
            is.close();
        } catch (IOException e) {
            LOG.error("IO Exception : File not found " + e);
        }
        return currentString.toString();

    }

    public long getBytesRead() {
        return bytesRead;
    }

}