Mybatis框架配置文件收录总结（详解附代码版）

Mybatis框架配置收录（详解版）

MybatisUtils详细配置说明

package com.lanyy.utils;//import javax.annotation.Resource;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;// 第一步创建工具类 sqlSessionFactory 工厂类是来构建 sqlSession
public class MybatisUtils {private static SqlSessionFactory sqlSessionFactory;static {try {// 第二步去resources 目录下写配置文件mybatis-config.xmlString resource = "mybatis-config.xml";// 构建sqlSessionFactory对象，并引入mybatis配置文件InputStream inputStream = Resources.getResourceAsStream(resource);// 通过SqlSessionFactoryBuilder方法生成sqlSessionFactory对象sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);} catch (IOException e)// 使用mybatis必须完成的一步，加载配置文件,获取sqlSessionFactory对象
//        String resource = "mybatis-config.xml";
//        InputStream input = Resource.getResourceAsStream(resource);
//        sqlSessionFactory sqlsession= new SqlSessionFactoryBuilder().build(input);{e.printStackTrace();}}// 获取sqlSession对象连接public static SqlSession getSqlSession() {return sqlSessionFactory.openSession();}
}

MybatisUtils简化配置说明

package com.lanyy.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;//sqlSessionFactory --> sqlSession
public class MybatisUtils {private static SqlSessionFactory sqlSessionFactory;static{try {//使用Mybatis第一步：获取sqlSessionFactory对象String resource = "mybatis-config.xml";InputStream inputStream = Resources.getResourceAsStream(resource);sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);} catch (IOException e) {e.printStackTrace();}}public static SqlSession  getSqlSession(){return sqlSessionFactory.openSession(true);}}

MybatisUtils自动提交数据库增删改事务配置

package com.lanyy.utils;//import javax.annotation.Resource;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;// 第一步 实例化创建工具类 sqlSessionFactory 工厂类构造器
// 生成配置文件流XMLConfigBuilder传递所有配置信息至Configuration
// 经executor执行器创建 sqlSession
public class MybatisUtils {private static SqlSessionFactory sqlSessionFactory;static {try {// 第二步去resources 目录下写配置文件mybatis-config.xmlString resource = "mybatis-config.xml";// 构建sqlSessionFactory对象，并引入mybatis配置文件InputStream inputStream = Resources.getResourceAsStream(resource);// 通过SqlSessionFactoryBuilder方法生成sqlSessionFactory实例化对象sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);} catch (IOException e)// 使用mybatis必须完成的一步，加载配置文件,获取sqlSessionFactory对象
//        String resource = "mybatis-config.xml";
//        InputStream input = Resource.getResourceAsStream(resource);
//        sqlSessionFactory sqlsession= new SqlSessionFactoryBuilder().build(input);{e.printStackTrace();}}// 获取sqlSession对象连接// 设置自动提交事务功能()内改为true，默认为false空白（）public static SqlSession getSqlSession() {return sqlSessionFactory.openSession(true);}
}

db.properties配置详情

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/mybatis?useSSL=true&useUnicode=true&characterEncoding=UTF-8
username=root
pwd=root

mybatis-config.xml配置详情

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd">
<!--configuration核心配置文件-->
<configuration><!--引入外部配置文件--><properties resource="db.properties"/><settings><!--标准的日志工厂实现--><setting name="logImpl" value="STDOUT_LOGGING"/></settings><!--可以给实体类起别名--><typeAliases><package name="com.lanyy.pojo"/></typeAliases><environments default="development"><environment id="development"><transactionManager type="JDBC"/><dataSource type="POOLED"><property name="driver" value="${driver}"/><property name="url" value="${url}"/><property name="username" value="${username}"/><property name="password" value="${pwd}"/></dataSource></environment></environments><mappers><mapper class="com.lanyy.dao.TeacherMapper"/><mapper class="com.lanyy.dao.StudentMapper"/></mappers>
</configuration>