Mybatis-Plus分页插件使用

• Config配置
• Mapper
• Service
• Controller
• 测试

Config配置

@Configuration
@EnableTransactionManagement
@MapperScan("com.liyue.music.dao")
public class ApplicationConfig {
	    /**
     * 插件主体
     * @return
     */
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor(){
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }
}

Mapper

public interface SingerMapper extends BaseMapper<Singer> {
}

Service

public interface SingerService {
    /**
     * 分页查询歌手
     * @param pageNum
     * @return
     */
    Page<Singer> getSingerWithPage(Integer pageNum);
}

@Service
public class SingerServiceImpl implements SingerService {
    @Override
    public Page<Singer> getSingerWithPage(Integer pageNum) {
        Page<Singer> page = new Page<Singer>(pageNum, 30);
        Page<Singer> singerPage = singerMapper.selectPage(page, null);
        return singerPage;
    }
}

Controller

@RestController
@Slf4j
public class SingerController {
    @Autowired
    private SingerService singerService;
    }
    
    @PostMapping("/singers")
    public CommonResult getSingers(@RequestParam(name = "pageNum",defaultValue = "1") Integer pageNum){
        Map<String,Object> map = new HashMap<>(2);
        Page<Singer> singerWithPage = singerService.getSingerWithPage(pageNum);
        //获取歌手信息
        List<Singer> singers = singerWithPage.getRecords();
        //获取总数
        long total = singerWithPage.getTotal();
        log.info("查询到歌手总数：" + total);
        map.put("list",singers);
        map.put("total",total);
        CommonResult result = new CommonResult();
        result.hander(ResultEnum.SUCCESS,map);
        return result;
    }
}

测试