java操作excel，

 

package com.test.suanfa;

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.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;
 
 
 
public class ExcelOperate {
 
 
 
    public static void main(String[] args) throws Exception {
 //E:/PHPprogram/阿托普/
       File file = new File("E:/PHPprogram/阿托普/poi三个包/20131010-uebersetzung-gui.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();
 
       }
 

    }
 
    /**
 
     * 读取Excel的内容，第一维数组存储的是一行中格列的值，二维数组存储的是多少个行
 
     * @param file 读取数据的源Excel
 
     * @param ignoreRows 读取数据忽略的行数，比喻行头不需要读入 忽略的行数为1
 
     * @return 读出的Excel中数据的内容
 
     * @throws FileNotFoundException
 
     * @throws IOException
 
     */
 
    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);
 
    }
 
}