利用遊標返回結果集的的例子（Oracle 存儲過程）

在sqlplus中建立如下的內容：
1、程序包

SQL> create or replace package types
  2  as
  3      type cursorType is ref cursor;
  4  end;
  5  /

程序包已創建。

2、函數
SQL> create or replace function sp_ListEmp return types.cursortype
  2  as
  3      l_cursor    types.cursorType;
  4  begin
  5      open l_cursor for select id, title from cf_news order by id;--表的名字
  6      return l_cursor;
  7  end;
  8  /

函數已創建。

3、過程

SQL> create or replace procedure getemps( p_cursor in out types.cursorType )
  2  as
  3  begin
  4        open p_cursor for select id, title from cf_news order by id;--表的名字
  5  end;
  6  /

過程已創建。

4、建立一個可執行的java控制檯程序

import java.sql.*;
import java.io.*;
import oracle.jdbc.driver.*;
 

class GetValues
{
  public static void main (String args [])
                     throws SQLException, ClassNotFoundException
  {
      String driver_class = "oracle.jdbc.driver.OracleDriver";
      String connect_string = "jdbc:oracle:thin:@127.0.0.1:1521:database";

      String query = "begin :1 := sp_listEmp; end;"; //此處調用前面建立的函數！
      Connection conn;

      Class.forName(driver_class);
      conn = DriverManager.getConnection(connect_string, "scott", "tiger");

      CallableStatement cstmt = conn.prepareCall(query);
      cstmt.registerOutParameter(1,OracleTypes.CURSOR);
      cstmt.execute();
      ResultSet rset = (ResultSet)cstmt.getObject(1);

      while (rset.next ())
        System.out.println( rset.getString (1) );
        cstmt.close();
  }
}

http://www.chinaitpower.com/A200507/2005-07-27/171528.html