怎么把excel里面的数据 导入oracle中已经存在的表中，用代码实现 最好能远程导入服务器上

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.text.NumberFormat;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Locale;

import org.apache.log4j.ConsoleAppender;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PatternLayout;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFCellStyle;
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.poifs.filesystem.POIFSFileSystem;

public class jexcel {
    private String file = "";

    private POIFSFileSystem fs = null;

    private HSSFWorkbook wb = null;

    private int cols = 41;// 数据列数，去掉砂层厚度后的

    private int cell_colums, cell_rows;

    private static Logger logger = Logger.getLogger(jexcel.class.getName());

    /**
     * 构造函数,
     * 
     * @param f -
     *            Excel文件名
     */
    public jexcel(String f) {

        String pattern = "%5p (%F:%L) - %m%n";
        PatternLayout layout = new PatternLayout(pattern);
        ConsoleAppender appender = new ConsoleAppender(layout);
        logger.removeAllAppenders();
        logger.addAppender(appender);
        logger.setLevel((Level) Level.DEBUG);

        try {
            this.setFile(f);
            this.init();

        } catch (FileNotFoundException e) {

            e.printStackTrace();
        } catch (IOException e) {

            e.printStackTrace();
        }

    }

    public jexcel() {

    }

    public void setFile(String f) {
        this.file = f;

    }

    private void init() throws FileNotFoundException, IOException {
        fs = new POIFSFileSystem(new FileInputStream(file));
        wb = new HSSFWorkbook(fs);

    }
public Iterator que(String n) {
        // Map<Integer, String[]> data=new HashMap<Integer, String[]>();//use
        // map
        // String datas[][] = null;//use array
        ArrayList datass = null;
        if (fs == null) {
            try {
                this.init();
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        HSSFSheet sheet = wb.getSheet(n);
        // HSSFSheet csheet=wb.cloneSheet(0);
        // wb.setSheetName(3,"复制"+wb.getSheetName(0),(short)1);//注意(short)1中文编码
        // try {
        // FileOutputStream fo=new FileOutputStream(file);
        // try {
        // wb.write(fo);
        // fo.close();
        // } catch (IOException e) {
        // // TODO 自动生成 catch 块
        // e.printStackTrace();
        // }
        //            
        // } catch (FileNotFoundException e) {
        // // TODO 自动生成 catch 块
        // e.printStackTrace();
        // }
        // Iterator rows=sheet.rowIterator();
        logger.debug("行数：" + sheet.getLastRowNum());
        datass = new ArrayList(sheet.getLastRowNum());
        cell_rows = sheet.getLastRowNum();

        for (int j = 1; j <= sheet.getLastRowNum(); j++) {
            HSSFRow row = sheet.getRow(j);
            int ron = row.getRowNum();
            // System.out.println("row #"+ron);
            if (j == 1) {
                logger.debug("列数：" + row.getLastCellNum());
            }
            cell_colums = row.getLastCellNum();
            // String[] ce=new String[cols];
            String[] ce = new String[cell_colums];
            String tem = "";
            for (int i = 0; i < cell_colums; i++) {
                HSSFCell cell = row.getCell((short) i);
                try {
                    switch (cell.getCellType()) {
                    case HSSFCell.CELL_TYPE_NUMERIC:

                        double dd = cell.getNumericCellValue();
                        NumberFormat nf = NumberFormat
                                .getInstance(Locale.CHINESE);// java.text.NumberFormat,数字格式化
                        nf.setGroupingUsed(false);// 不使用组，就是逗号科学计数
                        tem = nf.format(dd);
                        if (tem.indexOf(".") > 0) {
                            int p = tem.indexOf(".");
                            // logger.info(tem.substring(p));
                            if (tem.substring(p).length() > 3)
                                tem = tem.substring(0, tem.length() - 1);

                        }

                        break;
                    case HSSFCell.CELL_TYPE_STRING:
                        // logger.info(tem);
                        tem = cell.getStringCellValue().trim();
                        if (tem.length() == 0)
                            tem = " ";

                        break;
                    case HSSFCell.CELL_TYPE_BLANK:
                        tem = " ";
                        break;
                    default:

                        tem = "null";
                        break;
                    }

                    ce[i] = tem;

                } catch (NullPointerException e) {
                    // logger.error("read error data! "+j);
                    break;
                }

            }
            datass.add(ce);

        }
        logger.debug("" + datass.size());
        return datass.iterator();
    }

}