cn.vlabs.umt.common.xls.UserXLSParser.java Source code

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Here is the source code for cn.vlabs.umt.common.xls.UserXLSParser.java

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/*
 * Copyright (c) 2008-2013 Computer Network Information Center (CNIC), Chinese Academy of Sciences.
 *
 * 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 cn.vlabs.umt.common.xls;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.apache.commons.lang.StringUtils;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class UserXLSParser {
    public UserXLSParser(InputStream in) throws XLSException {
        HSSFWorkbook workbook;
        try {
            workbook = new HSSFWorkbook(in);
            sheet = workbook.getSheetAt(0);
            total = sheet.getLastRowNum();
        } catch (IOException e) {
            throw new XLSException(e.getMessage());
        }
    }

    public int getCount() {
        return total;
    }

    /**
     * ?
     * @param start 0
     * @param count ?
     * @return ?
     */
    public List<UserVO> readUsers(int start, int count) {
        List<UserVO> users = new ArrayList<UserVO>();
        int i = 0;
        int index = start + 1;
        while (i < count && index <= total) {
            UserVO u = parseLine(sheet, index);

            if (u.getUmtId() != null && !usernames.contains(u.getUmtId())) {
                users.add(u);
                usernames.add(u.getUmtId());
                i++;
            }

            index++;
        }
        return users;
    }

    private UserVO parseLine(HSSFSheet sheet, int row) {
        // ??Sheet
        HSSFRow rowline = sheet.getRow(row);

        // ??
        UserVO u = new UserVO();
        u.setUmtId(readCellValue(rowline.getCell((short) 0)));
        u.setTrueName(readCellValue(rowline.getCell((short) 1)));
        u.setPassword(readCellValue(rowline.getCell((short) 2)));
        u.setCstnetId(readCellValue(rowline.getCell((short) 3)));
        if (StringUtils.isEmpty(u.getCstnetId())) {
            u.setCstnetId(u.getUmtId());
        }
        return u;
    }

    private String readCellValue(HSSFCell cell) {
        if (cell != null) {
            String cellvalue = null;
            switch (cell.getCellType()) {
            case HSSFCell.CELL_TYPE_NUMERIC:
                cellvalue = Integer.toString((int) cell.getNumericCellValue());
                break;
            default:
                cellvalue = cell.getRichStringCellValue().getString();
                break;
            }
            return cellvalue;
        } else {
            return null;
        }
    }

    private Set<String> usernames = new HashSet<String>();
    private int total;
    private HSSFSheet sheet;
}