MyBatis-Plus分頁(yè)插件提供了IPage接口來(lái)支持分頁(yè)查詢。下面是一個(gè)使用示例:
public interface UserMapper extends BaseMapper<User> {
IPage<User> selectUserPage(IPage<User> page, @Param("username") String username);
}
<select id="selectUserPage" parameterType="com.baomidou.mybatisplus.extension.plugins.pagination.Page">
SELECT *
FROM user
<where>
<if test="username != null and username != ''">
AND username like CONCAT('%', #{username}, '%')
</if>
</where>
</select>
@Service
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements UserService {
@Override
public IPage<User> selectUserPage(int pageNum, int pageSize, String username) {
Page<User> page = new Page<>(pageNum, pageSize);
return baseMapper.selectUserPage(page, username);
}
}
@RestController
public class UserController {
@Autowired
private UserService userService;
@GetMapping("/users")
public IPage<User> getUsers(@RequestParam(defaultValue = "1") int pageNum,
@RequestParam(defaultValue = "10") int pageSize,
@RequestParam(defaultValue = "") String username) {
return userService.selectUserPage(pageNum, pageSize, username);
}
}
這樣就可以通過(guò)訪問(wèn)/users
接口來(lái)實(shí)現(xiàn)分頁(yè)查詢,傳入頁(yè)碼和每頁(yè)數(shù)量可以獲取對(duì)應(yīng)的分頁(yè)數(shù)據(jù)。