spring boot整合mybatis
时间: 2023-04-25 10:01:05 浏览: 117
Spring Boot整合MyBatis可以通过以下步骤完成:
1. 添加相关依赖:在pom.xml文件中添加Spring Boot和MyBatis的依赖,例如:
```
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.2.0</version>
</dependency>
```
2. 配置数据源:在application.properties文件中配置数据库连接信息,例如:
```
spring.datasource.url=jdbc:mysql://localhost:3306/testdb?useUnicode=true&characterEncoding=utf-8&useSSL=false
spring.datasource.username=root
spring.datasource.password=root
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
```
3. 创建MyBatis的Mapper接口:创建Mapper接口,并使用@Mapper注解标识,例如:
```
@Mapper
public interface UserMapper {
List<User> findAll();
void addUser(User user);
void updateUser(User user);
void deleteUser(int id);
}
```
4. 创建Mapper映射文件:创建Mapper映射文件,例如UserMapper.xml,编写SQL语句,并将Mapper接口与映射文件进行绑定,例如:
```
<?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">
<select id="findAll" resultType="com.example.entity.User">
select * from user
</select>
<insert id="addUser" parameterType="com.example.entity.User">
insert into user(name, age, gender) values(#{name}, #{age}, #{gender})
</insert>
<update id="updateUser" parameterType="com.example.entity.User">
update user set name=#{name}, age=#{age}, gender=#{gender} where id=#{id}
</update>
<delete id="deleteUser" parameterType="int">
delete from user where id=#{id}
</delete>
</mapper>
```
5. 注入Mapper接口:在Service或Controller中注入Mapper接口,并使用@Autowired注解,例如:
```
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
@Override
public List<User> findAll() {
return userMapper.findAll();
}
@Override
public void addUser(User user) {
userMapper.addUser(user);
}
@Override
public void updateUser(User user) {
userMapper.updateUser(user);
}
@Override
public void deleteUser(int id) {
userMapper.deleteUser(id);
}
}
```
以上就是Spring Boot整合MyBatis的基本步骤。