java操作excel表格（2003）

package test;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.HashMap;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
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;

import demo.HttpRequest;


public class ExcelOperate{
    
    public static void main(String[] args) throws Exception {

           File file = new File("d:/12345678.xls");

           String[][] result = getData(file, 1);

           int rowLength = result.length;

           for(int i=0;i<rowLength;i++) {

               for(int j=0;j<result[i].length;j++) {

                  System.out.print(result[i][j]+"\t\t");

               }

               System.out.println();

           }

        }
    
    
    
    public static String[][] getData(File file, int ignoreRows)throws FileNotFoundException, IOException {

        List<String[]> result = new ArrayList<String[]>();
        
        int rowSize = 0;
        
        BufferedInputStream in = new BufferedInputStream(new FileInputStream(
        
               file));
        
        // 打开HSSFWorkbook
        
        POIFSFileSystem fs = new POIFSFileSystem(in);
        
        HSSFWorkbook wb = new HSSFWorkbook(fs);
        
        HSSFCell cell = null;
        
        for (int sheetIndex = 0; sheetIndex < wb.getNumberOfSheets(); sheetIndex++) {
        
            HSSFSheet st = wb.getSheetAt(sheetIndex);
        
            // 第一行为标题，不取
        
            for (int rowIndex = ignoreRows; rowIndex <= st.getLastRowNum(); rowIndex++) {
        
               HSSFRow row = st.getRow(rowIndex);
        
               if (row == null) {
        
                   continue;
        
               }
        
               int tempRowSize = row.getLastCellNum() + 1;
        
               if (tempRowSize > rowSize) {
        
                   rowSize = tempRowSize;
        
               }
        
               String[] values = new String[rowSize];
        
               Arrays.fill(values, "");
        
               boolean hasValue = false;
        
               for (short columnIndex = 0; columnIndex <= row.getLastCellNum(); columnIndex++) {
        
                   String value = "";
        
                   cell = row.getCell(columnIndex);
        
                   if (cell != null) {
        
                      // 注意：一定要设成这个，否则可能会出现乱码
        
                      //cell.setEncoding(HSSFCell.ENCODING_UTF_16);
                      
        
                      switch (cell.getCellType()) {
        
                      case HSSFCell.CELL_TYPE_STRING:
        
                          value = cell.getStringCellValue();
        
                          break;
        
                      case HSSFCell.CELL_TYPE_NUMERIC:
        
                          if (HSSFDateUtil.isCellDateFormatted(cell)) {
        
                             Date date = cell.getDateCellValue();
        
                             if (date != null) {
        
                                 value = new SimpleDateFormat("yyyy-MM-dd")
        
                                        .format(date);
        
                             } else {
        
                                 value = "";
        
                             }
        
                          } else {
        
                             value = new DecimalFormat("0").format(cell
        
                                    .getNumericCellValue());
        
                          }
        
                          break;
        
                      case HSSFCell.CELL_TYPE_FORMULA:
        
                          // 导入时如果为公式生成的数据则无值
        
                          if (!cell.getStringCellValue().equals("")) {
        
                             value = cell.getStringCellValue();
        
                          } else {
        
                             value = cell.getNumericCellValue() + "";
        
                          }
        
                          break;
        
                      case HSSFCell.CELL_TYPE_BLANK:
        
                          break;
        
                      case HSSFCell.CELL_TYPE_ERROR:
        
                          value = "";
        
                          break;
        
                      case HSSFCell.CELL_TYPE_BOOLEAN:
        
                          value = (cell.getBooleanCellValue() == true ? "Y"
        
                                 : "N");
        
                          break;
        
                      default:
        
                          value = "";
        
                      }
        
                   }
        
                   if (columnIndex == 0 && value.trim().equals("")) {
        
                      break;
        
                   }
        
                   values[columnIndex] = rightTrim(value);
        
                   hasValue = true;
        
               }
        
        
        
               if (hasValue) {
        
                   result.add(values);
        
               }
        
            }
        
        }
        
        in.close();
        
        String[][] returnArray = new String[result.size()][rowSize];
        
        for (int i = 0; i < returnArray.length; i++) {
        
            returnArray[i] = (String[]) result.get(i);
        
        }
        
        return returnArray;

}
     
     /**

         * 去掉字符串右边的空格

         * @param str 要处理的字符串

         * @return 处理后的字符串

         */

     public static String rightTrim(String str) {

           if (str == null) {

               return "";

           }

           int length = str.length();

           for (int i = length - 1; i >= 0; i--) {

               if (str.charAt(i) != 0x20) {

                  break;

               }

               length--;

           }

           return str.substring(0, length);

        }

}