MyBatis封装SqlSession工具类

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一、MyBatis封装SqlSession工具类

1、配置连接数据库文件 jdbc.properties

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?&useUnicode=true&characterEncoding=utf8&serverTimezone=Asia/Shanghai
jdbc.username=root
jdbc.password=111111

2、核心配置文件 mybatis-config.xml

DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

    

    
    <properties resource="jdbc.properties"/>

    
    <settings>
        
        <setting name="logImpl" value="STDOUT_LOGGING"/>
        
        <setting name="mapUnderscoreToCamelCase" value="true"/>
        
        <setting name="lazyLoadingEnabled" value="true"/>
        
        <setting name="aggressiveLazyLoading" value="false"/>
    settings>

    
    <typeAliases>
        
         
        <package name=""/>
    typeAliases>

    
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="${jdbc.driver}"/>
                <property name="url"
                          value="${jdbc.url}"/>
                <property name="username" value="${jdbc.username}"/>
                <property name="password" value="${jdbc.password}"/>
            dataSource>
        environment>
    environments>

    
    <mappers>
     
        <package name=""/>
    mappers>

configuration>

3、封装工具类 SqlSessionUtil

package com.sgz.mybatis.utils;

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

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

/**
 * 作者：沈公子
 * 日期：2022/7/29 - 10:19
 * 需求：SqlSession 工具类
 */
public class SqlSessionUtil {

    public static SqlSession getSqSession() {
        SqlSession sqlSession = null;
        try {
            InputStream inputStream = Resources.getResourceAsStream("mybatis-config.xml");
            SqlSessionFactoryBuilder builder = new SqlSessionFactoryBuilder();
            SqlSessionFactory build = builder.build(inputStream);
            sqlSession = build.openSession(true);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return sqlSession;
    }
}