ssm mysql实现分页

<!-- pom.xml -->
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>5.3.0</version>
</dependency>

// MyBatis 配置文件
<plugins>
    <plugin interceptor="com.github.pagehelper.PageInterceptor">
        <property name="helperDialect" value="mysql"/>
        <property name="reasonable" value="true"/>
    </plugin>
</plugins>

// UserMapper.java
public interface UserMapper {
    List<User> selectUsers();
}

<!-- UserMapper.xml -->
<select id="selectUsers" resultType="User">
    SELECT * FROM users
</select>

// UserService.java
@Service
public class UserService {
    @Autowired
    private UserMapper userMapper;

    public PageInfo<User> getUsers(int pageNum, int pageSize) {
        PageHelper.startPage(pageNum, pageSize);
        List<User> users = userMapper.selectUsers();
        return new PageInfo<>(users);
    }
}

// UserController.java
@RestController
@RequestMapping("/users")
public class UserController {
    @Autowired
    private UserService userService;

    @GetMapping
    public PageInfo<User> getUsers(@RequestParam int pageNum, @RequestParam int pageSize) {
        return userService.getUsers(pageNum, pageSize);
    }
}