package com.xian.jdbc;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import javax.servlet.jsp.jstl.sql.Result;

import javax.servlet.jsp.jstl.sql.ResultSupport;

public class OracleConnection {

/**

* 连接ora数据库

* @return con

* @throws ClassNotFoundException

* @throws SQLException

* @author 贾小仙

*/

   public static Connection getOracleConnection() throws ClassNotFoundException,SQLException{

  String driver="oracle.jdbc.driver.OracleDriver";

  String url="jdbc:oracle:thin:@127.0.0.1:1521:orcl";

  Class.forName(driver);

  Connection con=DriverManager.getConnection(url, "scott","7758521");

  return con;

   }

   /**

* 关闭ora连接通道

* @return 

* @throws SQLException

* @author 贾小仙

*/

   public void freeResources(ResultSet resultSet,PreparedStatement pStatement,Connection con) throws SQLException{

  if(resultSet.isClosed()==false)

  resultSet.close();

  if(pStatement.isClosed()==false)

  pStatement.close();

  if(con.isClosed()==false)

  con.close();

   }

   /**

  * 查询无参数的Sql

  * @return Result

  * @throws Exception

  * @author 贾小仙

  */

   public Result runSelectSql(String sql){

  Connection con=null;

  PreparedStatement pStatement=null;

  ResultSet resultSet=null;

  Result result=null;

  try {

con=getOracleConnection();

pStatement=con.prepareStatement(sql);

resultSet=pStatement.executeQuery();

result=ResultSupport.toResult(resultSet);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}finally{

try {

freeResources(resultSet, pStatement, con);

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

  return result;

   }

   /**

* 查询有参数的Sql

* @return Result

* @throws Exception

* @author 贾小仙

*/

   public Result runSelectSql(String sql,Object[] params){

  Connection con=null;

  PreparedStatement pStatement=null;

  Result result=null;

  ResultSet resultSet=null;

  try {

con=getOracleConnection();

pStatement=con.prepareStatement(sql);

for(int i=0;i

pStatement.setObject(i+1, params[i]);

}

resultSet=pStatement.executeQuery();

result=ResultSupport.toResult(resultSet);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}finally{

try {

freeResources(resultSet, pStatement, con);

} catch (SQLException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

  return result;

   }

}