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;
     }
 }