spring整合mybatis实现增删改查操作

1. 首先确保在pom.xml中添加spring和mybatis的依赖：

<dependencies>     <!-- Spring -->     <dependency>         <groupId>org.springframework</groupId>         <artifactId>spring-context</artifactId>         <version>5.2.5.RELEASE</version>     </dependency>      <!-- MyBatis -->     <dependency>         <groupId>org.mybatis</groupId>         <artifactId>mybatis</artifactId>         <version>3.5.3</version>     </dependency> </dependencies> 

2. 配置mybatis的SqlSessionFactory和MapperScannerConfigurer：

<!-- MyBatis配置文件 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">     <property name="dataSource" ref="dataSource" />     <property name="configLocation" value="classpath:mybatis-config.xml" /> </bean>  <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">     <property name="basePackage" value="com.example.mapper" /> </bean> 

3. 创建MyBatis的映射文件和Mapper接口：

<!-- com/example/mapper/UserMapper.xml --> <mapper namespace="com.example.mapper.UserMapper">     <select id="selectUserById" resultType="com.example.model.User">         SELECT * FROM user WHERE id = #{id}     </select>      <insert id="insertUser" parameterType="com.example.model.User">         INSERT INTO user(name, age) VALUES(#{name}, #{age})     </insert>      <!-- 同理，添加update和delete的SQL语句 --> </mapper> 

// com/example/mapper/UserMapper.java package com.example.mapper;  import com.example.model.User;  public interface UserMapper {     User selectUserById(int id);     void insertUser(User user);     // 添加update和delete的方法 } 

4. 创建User类作为实体类：

// com/example/model/User.java package com.example.model;  public class User {     private int id;     private String name;     private int age;      // 省略getter和setter方法 } 

5. 编写Service类调用Mapper接口实现增删改查操作：

// com/example/service/UserService.java package com.example.service;  import com.example.mapper.UserMapper; import com.example.model.User; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service;  @Service public class UserService {     @Autowired     private UserMapper userMapper;      public User getUserById(int id) {         return userMapper.selectUserById(id);     }      public void addUser(User user) {         userMapper.insertUser(user);     }      // 添加update和delete的方法 } 

至此，就完成了Spring整合MyBatis实现增删改查操作的基本步骤。通过配置MyBatis的SqlSessionFactory和MapperScannerConfigurer，以及编写Mapper接口和映射文件，再通过Service类调用Mapper接口实现具体的数据库操作。