在IDEA中搭建MyBatis的环境需要以下步骤：
- 创建一个新的Maven项目。
- 添加MyBatis和数据库驱动的依赖。
- 创建实体类、接口、Mapper文件和数据库配置文件。
以下是相关的配置文件和代码示例：
pom.xml中添加依赖
<dependencies>
<!-- MyBatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.5.6</version>
</dependency>
<!-- MySQL 数据库驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.23</version>
</dependency>
</dependencies>实体类示例
public class User {
private Integer id;
private String name;
// 省略getter和setter方法
}Mapper接口示例
public interface UserMapper {
User selectUserById(Integer id);
}Mapper XML配置文件
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.mapper.UserMapper">
<select id="selectUserById" parameterType="Integer" resultType="com.example.entity.User">
SELECT * FROM users WHERE id = #{id}
</select>
</mapper>MyBatis配置文件
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<property name="driver" value="com.mysql.cj.jdbc.Driver"/>
<property name="url" value="jdbc:mysql://localhost:3306/myapp"/>
<property name="username" value="root"/>
<property name="password" value="password"/>
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="com/example/mapper/UserMapper.xml"/>
</mappers>
</configuration>测试类示例
public class MyBatisTest {
public static void main(String[] args) throws IOException {
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsReader("mybatis-config.xml"));
Sql