MyBatis Plus 实现多表分页查询功能的示例代码

import com.baomidou.mybatisplus.plugins.PaginationInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
 
@Configuration
@EnableTransactionManagement(proxyTargetClass = true)
public class MybatisPlusConfig {
 
  /**
   * mybatis-plus分页插件<br>
   */
  @Bean
  public PaginationInterceptor paginationInterceptor() {
    PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
    return paginationInterceptor;
  }
}

public class PageReq implements Serializable {

  /**
   * 每页显示大小
   */
  private long size;

  /**
   * 当前页码
   */
  private long current;

  /**
   * 最大页数
   */
  private long maxCurrent;

  /**
   * 数据总条数
   */
  private long total;

  public long getSize() {
    return size;
  }

  public void setSize(long size) {
    this.size = size;
  }

  public long getCurrent() {
    return current;
  }

  public void setCurrent(long current) {
    this.current = current;
  }

  public long getMaxCurrent() {
    return maxCurrent;
  }

  public void setMaxCurrent(long maxCurrent) {
    this.maxCurrent = maxCurrent;
  }

  public long getTotal() {
    return total;
  }

  public void setTotal(long total) {
    if(size != 0){
      if(total % size != 0){
        maxCurrent = total / size + 1;
      }else {
        maxCurrent = total / size;
      }
    }
  }

  public PageReq() {

  }

  public PageReq(long size, long current, long total) {
    this.size = size;
    this.current = current;
    this.total = total;
    setTotal(total);
  }
}

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.eiot.e_view.model.req.RoomPageReq;
import com.eiot.e_view.model.vo.RoomVO;
import org.apache.ibatis.annotations.Param;

import java.util.List;

public interface RoomMapper extends BaseMapper<Room> {

  List<RoomVO> getRoomPageList(Page page, @Param("roomPageReq")RoomPageReq roomPageReq);
}