package com.AITCL.config;

import com.alibaba.druid.pool.DruidDataSource;
import org.apache.ibatis.datasource.DataSourceFactory;
import org.apache.ibatis.datasource.pooled.PooledDataSourceFactory;
import com.alibaba.druid.pool.DruidDataSourceFactory;

import javax.sql.DataSource;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

/**
 * 为了使用阿里开源的druid数据连接池而创建的类
 * @author xuning
 */
public class useDruidDataSourceFactory implements DataSourceFactory {
    private Properties properties;
    public void setProperties(Properties props) {
        this.properties = props;
    }

    public DataSource getDataSource() {
        InputStream in = useDruidDataSourceFactory.class.getClassLoader().getResourceAsStream("druid.properties");
        DataSource dataSource = null;
        try {
            this.properties.load(in);
            dataSource = DruidDataSourceFactory.createDataSource(this.properties);
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
        return dataSource;
    }
}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<!--mybatis的主配置文件-->
<configuration>
    <!--只能配置domain中类的别名-->
    <typeAliases>
        <!--用于指定要配置别名的包，当指定后，该包下的实体类都会注册别名，并且类名就是别名，不再区分大小写-->
        <package name="com.AITCL.domain"/>
    </typeAliases>
    <!--配置环境-->
    <environments default="mysql">
        <!--配置mysql的环境-->
        <environment id="mysql">
            <!--配置事务的类型-->
            <transactionManager type="JDBC"></transactionManager>
            <!--
                配置数据源
                使用阿里巴巴开源的数据库连接池
                com.AITCL.config.useDruidDataSourceFactory
            -->
            <dataSource type="com.AITCL.config.useDruidDataSourceFactory">
                <property name="driver" value="com.mysql.cj.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/mybatislearn?serverTimezone=UTC"/>
                <property name="username" value="root"/>
                <property name="password" value="09161549"/>
            </dataSource>
        </environment>
    </environments>

    <!--指定映射配置文件的位置 每个dao独立的配置文件-->
    <mappers>
        <!--UserDao的配置文件-->
       <mapper resource="com/AITCL/dao/UserDaoMapper.xml"/>
        <!--RoleDao的配置文件-->
        <mapper resource="com/AITCL/dao/RoleDaoMapper.xml"/>
        <!--用于指定dao接口所在的包，当指定完成之后就不用谢mapper-->
        <!--<package name="com.AITCL.dao"/>-->
    </mappers>
</configuration>

 @Test
    public void findUserByidTest(){
        SqlSession sqlSession = mybatisUtils.getSqlSession();
        UserDaoI mapper = sqlSession.getMapper(UserDaoI.class);
        User userById = mapper.findUserById(48);
        System.out.println(userById);
    }