JDBC鏈接

package tool;

import java.sql.*; public class CreateConn {  //建立Oracle數據庫鏈接  public Connection getConnction(){    Connection conn=null;   try{   Class.forName("oracle.jdbc.driver.OracleDriver");// 加載數據庫驅動   String url = "jdbc:oracle:thin:@localhost:1521:ora9i";   conn = (Connection) DriverManager.getConnection(url, "scott",     "tiger");   return conn;   }   catch(SQLException e)   {    e.printStackTrace();   } catch (ClassNotFoundException e) {    e.printStackTrace();   }   return null;  }     //關閉結果集  public void closeRs(ResultSet rs)  {   if(rs!=null)   {    try    {     rs.close();    }catch(SQLException e){     e.printStackTrace();    }   }     }  // 關閉數據操做對象  public void closePs(PreparedStatement ps)  {   if(ps!=null)   {    try    {     ps.close();    }catch(SQLException e){     e.printStackTrace();    }   }     }     // 關閉數據庫鏈接  public void closeConn(Connection conn){   if (conn != null) {    try {     conn.close();    } catch (Exception e) {     e.printStackTrace();    }   }   } }