package com.dut.dao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 僨乕僞僶儞僋偺僐僱僋僔儑儞傪寶偰傞?
 * @version 1.0
 * @author 梜楉汵? 2006-04-03
 *
 */
public class BatchDBConnectionUtil {

	String DBIP = "192.168.7.251";
	String DBname = "team2";
	String dbDriver = "com.mysql.jdbc.Driver"; 
	String strCon = null; 
	String USER = "root";
	String PWD = "team2";
	Connection con = null;
	ResultSet rs = null;
	Statement stmt = null;
	
	/**
	 * 峔憿娭悢丄僨乕僞僶儞僋偺僐僱僋僔儑儞傪庢摼
	 * @version 1.0
	 * @author 梜楉汵 2006-04-03
	 */
	public BatchDBConnectionUtil()
	{
		strCon = "jdbc:mysql://" + DBIP + "/" + DBname
				+ "?user=" + USER + "&password=" + PWD; 
		
		this.getConnection();
	}
	
	
	/**
	 * 僨乕僞僶儞僋偺僐僱僋僔儑儞傪寶偰傞?
	 * 僐僱僋僔儑儞偺忬嫷傪堷偒曉偡傞?
	 * @return String
	 * @version 1.0
	 * @author 梜楉汵 2006-04-03
	 */
	public String getConnection(){
		String message = null;
		try
		{
			Class.forName(dbDriver);
		}
		catch(java.lang.ClassNotFoundException e)
		{
			message = e.getMessage();
		}
		try {
			con = DriverManager.getConnection(strCon);
			stmt = con.createStatement();
			message = "僨乕僞僶儞僋偺僐僱僋僔儑儞偼惉岟偱偡";
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
			message = "僨乕僞僶儞僋偺僐僱僋僔儑儞偼幐攕偱偡" +e.getMessage();
			System.out.println(message);
		} 
		return message;
	}

	/**
	 * 偙偺娭悢偺嶌梡偼僨乕僞僶儞僋傪専嶕偟傑偡
	 * 堦偮SQL専嶕偺岅嬪偑愙庴偡傞丄専嶕寢壥傪堷偒曉偡傞?
	 * @param String strSQL
	 * @return ResultSet
	 * @version 1.0
	 * @author 梜楉汵? 2006-04-03
	 */
	public ResultSet executeQuery(String strSQL) 
	{
		rs = null;
		try
		{
			rs = stmt.executeQuery(strSQL);			
		}
		catch(SQLException ex)
		{
			System.err.println("僨乕僞僶儞僋偺専嶕偼幐攕偱偡" +ex.getMessage());
			return null;
		}
			return rs;

	}
	
	
	/**
	 * 偙偺娭悢偺嶌梡偼僨乕僞僶儞僋偵壛偊傞丄廋惓偡傞?
	 * 堦偮SQL憖嶌偺岅嬪偑愙庴偡傞丄憖嶌偺忬嫷傪堷偒曉偡傞?
	 * @param String strSQL
	 * @return String
	 * @version 1.0
	 * @author 梜楉汵 2006-04-03
	 */
	public String executeUpdate(String strSQL)
	{
		
		String message = null;
		try
		{
			stmt.executeUpdate(strSQL);
			return message;
		}
		catch(SQLException ex)
		{
			message = "僨乕僞僶儞僋偺憖嶌偼幐攕偱偡" +ex.getMessage();
			return message;
		}
	}
	
	/**
	 * 偙偺娭悢偺嶌梡偼僨乕僞僶儞僋偺僐僱僋僔儑儞傪暵傑傝傑偡
	 * @version 1.0
	 * @author 梜楉汵 2006-04-03
	 */
	public void close(){
		try {
			stmt.close();
			con.close();
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
	}
}