package com.utils;





import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.IOException;
import java.io.InputStream;

/*工具类:SqlSessionFactory数据库会话工厂工具*/
public class SqlSessionFactoryUtils {
    //定义一个SqlSessionFactory的对象
    public static SqlSessionFactory sqlSessionFactory = null;

    //定义一个静态方法，获得SqlSessionFactory

    public static SqlSessionFactory getSqlSessionFactory() {
        //步骤1：读取mybatis 主配置文件。获取数据库相关的配置信息
        InputStream inputStream = null;
        try {
            inputStream = Resources.getResourceAsStream("mybatis-config.xml");
            //步骤2：通过配置文件流input构建出工厂类
            sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);

        } catch (IOException e) {
            e.printStackTrace();
        }

        return sqlSessionFactory;
    }
}