package com.geng.util;

import java.io.IOException;
import java.io.InputStream;
import java.sql.*;
import java.util.Properties;

// 操作数据库的工具类
public class JDBCUtils {
    public static Connection getConnection(){
        Connection conn = null;
        try {
            InputStream is = ClassLoader.getSystemClassLoader().getResourceAsStream("jdbc.properties");
            Properties pros = new Properties();
            pros.load(is);

            String user = pros.getProperty("user");
            String password = pros.getProperty("password");
            String url = pros.getProperty("url");
            String driverClass = pros.getProperty("driverClass");

            Class.forName(driverClass);

            conn = DriverManager.getConnection(url, user, password);
        } catch (Exception e) {
           e.printStackTrace();
        }
        return conn;
    }
    
    // 关闭资源和Statement的操作
    public void closeResource(Connection conn, Statement ps){
        try {
            if(ps != null)
                ps.close();
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
        try {
            if(conn != null)
                conn.close();
        } catch (SQLException throwables) {
            throwables.printStackTrace();
        }
    }
}