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<params.length;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;

}

}