java 读取excel,jxl.jar下载地址:

jxl.jar下载地址:

http://sourceforge.net/project/showfiles.php?group_id=79926
1.
import jxl.Sheet;
import java.io.InputStream;
import java.util.Vector;
import java.io.FileInputStream;
import jxl.Workbook;

public class Test2 {
    public static void main(String [] args){
     ReadExcel("c://20060818104025_50101_Merchant.xls");
    }
    public Test2() {
    }
    /*
* 方法名：ReadExcel
* 参数：filePath为Execl文件的绝对路径
* 用途：读取Execl数据,放在数组中返回
*返回类型：Vector
*
* */
public static Vector ReadExcel(String filePath)
{
Vector v = new Vector();
Workbook rwb = null;
try
{
 InputStream is = new FileInputStream(filePath);
 rwb = Workbook.getWorkbook(is);
 // 获取第一张Sheet表
 Sheet rs = rwb.getSheet(0);
 for (int k = 0; k < rs.getRows(); k++)
 {
 for (int j = 0; j < rs.getColumns(); j++)
 {
 System.out.println(rs.getCell(j, k).getContents());
 v.add(rs.getCell(j, k).getContents());
 }
 }
 rwb.close();
}
catch (Exception e)
{
 e.printStackTrace();
}
return v;
}

}

2.

public class Test1 {
  public static void main(String[] args) {
    jxl.Workbook rwb = null;
    try{
      //构建Workbook对象, 只读Workbook对象
      //直接从本地文件创建Workbook
      //从输入流创建Workbook
      InputStream is = new FileInputStream("E:/project/test/jxlrwtest.xls");
      rwb = Workbook.getWorkbook(is);

      //Sheet(术语：工作表)就是Excel表格左下角的Sheet1,Sheet2,Sheet3但在程序中
      //Sheet的下标是从0开始
      //获取第一张Sheet表
       Sheet rs = rwb.getSheet(0);
       //获取Sheet表中所包含的总列数
       int rsColumns = rs.getColumns();
       //获取Sheet表中所包含的总行数
       int rsRows = rs.getRows();
       //获取指定单元格的对象引用
       for(int i=0;i<rsRows;i++){
         for(int j=0;j<rsColumns;j++){
           Cell cell = rs.getCell(j,i);
           System.out.print(cell.getContents()+" ");
         }
         System.out.println();
       }
       //利用已经创建的Excel工作薄创建新的可写入的Excel工作薄
       jxl.write.WritableWorkbook wwb = Workbook.createWorkbook(new File("E:/project/test/test2.xls"),rwb);
       //读取第一张工作表
       jxl.write.WritableSheet ws = wwb.getSheet(0);

       //获得第一个单元格对象
       jxl.write.WritableCell wc = ws.getWritableCell(0, 0);
       //判断单元格的类型, 做出相应的转化
       if (wc.getType() == CellType.LABEL) {
         Label l = (Label) wc;
         l.setString("The value has been modified.");
       }
       //写入Excel对象
       wwb.write();
       wwb.close();

    }catch(Exception e){
      e.printStackTrace();
    }
    finally{
      //操作完成时，关闭对象，释放占用的内存空间
      rwb.close();

    }
  }
 
 

}