Spring框架用配置文件整合Mybatis框架代码

好的，下面是整合步骤：

1. 添加 Mybatis 和 Spring 的相关依赖包，可以在 Maven 中添加以下依赖：

<!-- Mybatis 依赖 -->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.5.7</version>
</dependency>

<!-- Spring 依赖 -->
<!-- Spring 核心依赖 -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>5.2.12.RELEASE</version>
</dependency>
<!-- Spring 上下文依赖 -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>5.2.12.RELEASE</version>
</dependency>
<!-- Spring JDBC 依赖 -->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>5.2.12.RELEASE</version>
</dependency>

2. 在 Spring 配置文件中添加 Mybatis 和数据库连接相关配置，如下：

<!-- 数据库连接配置 -->
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
    <property name="url" value="jdbc:mysql://localhost:3306/mybatis?useSSL=false&amp;serverTimezone=UTC"/>
    <property name="username" value="root"/>
    <property name="password" value="123456"/>
</bean>

<!-- Mybatis SqlSessionFactory 配置 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="configLocation" value="classpath:mybatis-config.xml"/>
</bean>

<!-- Mybatis Mapper 扫描配置 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.example.mapper"/>
</bean>

3. 编写 Mybatis 的配置文件 mybatis-config.xml，配置 Mybatis 相关参数，如下：

<?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">
<configuration>
    <settings>
        <setting name="cacheEnabled" value="true"/>
    </settings>
    <typeAliases>
        <package name="com.example.entity"/>
    </typeAliases>
    <mappers>
        <mapper resource="mapper/UserMapper.xml"/>
    </mappers>
</configuration>

4. 编写 Mapper 接口和对应的 XML 文件，如下：

UserMapper.java

public interface UserMapper {
    User getUserById(Long id);
}

UserMapper.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.example.mapper.UserMapper">
    <resultMap id="userMap" type="com.example.entity.User">
        <id column="id" property="id"/>
        <result column="username" property="username"/>
        <result column="password" property="password"/>
    </resultMap>

    <select id="getUserById" resultMap="userMap">
        SELECT * FROM user WHERE id = #{id}
    </select>
</mapper>

5. 在代码中通过 Spring 的 IoC 容器获取 Mapper 对象并调用方法，如下：

@Autowired
private UserMapper userMapper;

public User getUserById(Long id) {
    return userMapper.getUserById(id);
}

以上就是整合 Mybatis 和 Spring 的基本步骤。