SpringBoot集成MyBatisPlus+MySQL（超详细）

以下是一个Spring Boot整合MyBatis Plus和MySQL的示例：

1. 在pom.xml中添加依赖：

<dependencies>
    <!-- Spring Boot Starter -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
 
    <!-- MyBatis Plus Starter -->
    <dependency>
        <groupId>com.baomidou</groupId>
        <artifactId>mybatis-plus-boot-starter</artifactId>
        <version>3.x.x</version> <!-- 替换为实际版本号 -->
    </dependency>
 
    <!-- MySQL Connector -->
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
 
    <!-- Spring Boot Test Starter -->
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

2. 配置application.properties或application.yml文件：

# application.properties
spring.datasource.url=jdbc:mysql://localhost:3306/数据库名?useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
spring.datasource.username=数据库用户名
spring.datasource.password=数据库密码
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
 
mybatis-plus.mapper-locations=classpath:/mappers/**/*.xml
mybatis-plus.type-aliases-package=com.yourpackage.model

3. 创建实体类和Mapper接口：

// User.java (实体类)
@Data
public class User {
    private Long id;
    private String name;
    private Integer age;
    private String email;
}
 
// UserMapper.java (Mapper接口)
@Mapper
public interface UserMapper extends BaseMapper<User> {
    // 这里可以添加自定义方法
}

4. 创建Service层和Controller层：

// UserService.java (Service层)
@Service
public class UserService {
    @Autowired
    private UserMapper userMapper;
 
    public List<User> getAllUsers() {
        return userMapper.selectList(null);
    }
}
 
// UserController.java (Controller层)
@RestController
@RequestMapping("/users")
public class UserController {
    @Autowired
    private UserService userService;
 
    @GetMapping("/")
    public List<User> getAllUsers() {
        return userService.get