package com.bdqn.util;

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

public class DbUtil {

	static Connection conn = null;
	static PreparedStatement ps = null;
	static ResultSet rs = null;

	public static Connection getConn() {
		String driver = "com.mysql.jdbc.Driver";
		String url = "jdbc:mysql://localhost:3306/lx";
		String userName = "root";
		String password = "root";
		try {
			Class.forName(driver);
			conn = DriverManager.getConnection(url, userName, password);
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			System.out.println(e);
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			System.out.println(e);
		}
		return conn;
	}

	public static void closeAll(Connection conn, PreparedStatement ps,
			ResultSet rs) {
		try {
			if (conn != null) {
				conn.close();
			}
			if(ps != null){
				ps.close();
			}
			if(rs != null){
				rs.close();
			}
		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	public static PreparedStatement executeSql(String sql,Object[] obj){
		conn=getConn();
		if(obj !=null || obj.length>=0){
			try {
				ps=conn.prepareStatement(sql);
				for (int i=0;i<obj.length;i++) {
					ps.setObject(i+1, obj[i]);
				}
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				System.out.println(e);
			}
		}
		return ps;
	}
}