Java POI操作Excle工具类

用到了jxl.jar和poi.jar

一些基本的操作Excel的操作方法:

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import jxl.Cell;
import jxl.Workbook;

import org.apache.log4j.Logger;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.dom4j.Document;
import org.dom4j.DocumentException;

import com.chinadigitalvideo.hibernate.Provider;
import com.chinadigitalvideo.service.ProviderMgr;
import com.chinadigitalvideo.utils.bean.App_Data;
import com.chinadigitalvideo.xbase.GUID;

public class POIExcelHelper {
    public static Logger logger = Logger.getLogger(POIExcelHelper.class);

    /**
     * 设置表头样式 
     * @param workbook
     * @return
     */
    public static HSSFCellStyle getTitleStyle(HSSFWorkbook workbook) {
        HSSFFont font = workbook.createFont();
        font.setColor(HSSFColor.BLUE.index);
        font.setFontHeight((short) 200);
        font.setFontName("楷体_GB2312");
        font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);

        HSSFCellStyle style = workbook.createCellStyle();
        style.setAlignment(HSSFCellStyle.VERTICAL_CENTER);
        style.setAlignment(HSSFCellStyle.ALIGN_CENTER);
        style.setFont(font);
        style.setFillForegroundColor(HSSFColor.GREY_50_PERCENT.index);
        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        return style;
    }
    
    /**
     * 设置表格特别数据样式
     * @param workbook
     * @return
     */
    public static HSSFCellStyle getDataStyle2(HSSFWorkbook workbook) {
        HSSFFont font = workbook.createFont();
        font.setColor(HSSFColor.BLACK.index);
        font.setFontHeight((short) 200);
        font.setFontName("楷体_GB2312");

        HSSFCellStyle style = workbook.createCellStyle();
        style.setAlignment(HSSFCellStyle.VERTICAL_CENTER);
        style.setAlignment(HSSFCellStyle.ALIGN_LEFT);
        style.setFont(font);
        style.setFillForegroundColor(HSSFColor.GREY_40_PERCENT.index);
        style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
        return style;
    }

    /**
     * 创建单元格内容
     * @param row
     * @param id
     * @param value
     * @param style
     */
    @SuppressWarnings("deprecation")
    public static void createCell(HSSFRow row, int id, String value, HSSFCellStyle style) {
        HSSFCell cell = row.createCell((short) id);
        cell.setCellType(HSSFCell.CELL_TYPE_STRING);
        cell.setCellValue(value);
        if (style != null) {
            cell.setCellStyle(style);
        }
    }

    /**
     * 创建报表文件
     * @param workbook
     * @param dir
     * @param filename
     * @throws IOException
     */
    public static void createFile(HSSFWorkbook workbook, String dir, String filename)
            throws IOException {
        dir = dir == null ? "" : dir.trim();
        if( !"".equals(dir) ){
            if( !dir.endsWith(File.separator) ){
                dir += File.separator ;
            }
        }
        logger.debug("out put dir: " + dir);
        File outdir = new File(dir);
        if (!outdir.exists()) {
            outdir.mkdirs();
        }
        FileOutputStream fOut = new FileOutputStream(dir + filename);
        workbook.write(fOut);
        fOut.flush();
        fOut.close();
        logger.info(dir + filename + "已经生成!");
    }
    
    /**
     * 读取Excel中所有的列
     * @param filename
     * @return
     * @throws IOException
     */
    private static List<Cell[]> jxlGetExcelColumns(String filename) throws IOException {
        InputStream is = null;
        jxl.Workbook rwb = null;
        List<Cell[]> list = new ArrayList<Cell[]>();
        try {
            is = new FileInputStream(filename);
            rwb = Workbook.getWorkbook(is);
            // Sheet[] sheets = rwb.getSheets();
            // int sheetLen = sheets.length;
            jxl.Sheet rs = rwb.getSheet(0); // 读取第一个工作表的数据

            //getRows() 获取总共多少列...getColumn(n)获取第n列...
            for(int i=0; i<rs.getColumns(); i++ ){
                list.add(rs.getColumn(i));
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        } finally {
            rwb.close();
            is.close();
        }
        return list;
    }
    
    /**
     * 读取Excel中所有的行
     * @param filename
     * @return
     */
    private static List<Cell[]> jxlGetExcelRows(String filename) {
        InputStream is = null;
        jxl.Workbook rwb = null;
        List<Cell[]> list = new ArrayList<Cell[]>();
        try {
            is = new FileInputStream(filename);
            rwb = Workbook.getWorkbook(is);
            // Sheet[] sheets = rwb.getSheets();
            // int sheetLen = sheets.length;
            jxl.Sheet rs = rwb.getSheet(0); // 默认先读取第一个工作表的数据
            
            //getRows() 获取总共多少行...getRow(n)获取第n行...
            for(int i=0; i<rs.getRows(); i++ ){
                list.add(rs.getRow(i));
            }
        } catch (Exception ex) {
            ex.printStackTrace();
        } finally {
            rwb.close();
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return list;
    }
}