Mybatis-plus – 分页 – RowBounds
Server 类
@Slf4j
@Transactional
@Service
public class AvatarServiceImpl implements AvatarService {
@Autowired
private AvatarDao avatarDao ;
@Autowired
private PaginationProperties paginationProperties ;
// do 。。。
@Override
public Page<Avatar> doFondPageObject(Integer pageCurrent, String name) {
log.debug("doFondPageObject pageCurrent={} name={}",pageCurrent,name);
Assert.isArgumentValid(pageCurrent==null||pageCurrent<1, "页码异常");
/**查询:[分页前]总数据量*/
Wrapper<Avatar> wrapper = //条件
new EntityWrapper<Avatar>()
.like(name!=null&&!"".equals(name),"name", name);
Integer totalDataCount = //[分页前]总数据量
avatarDao.selectCount(wrapper);
Assert.isNoFound(totalDataCount==null||totalDataCount==0, "没有数据");
/**查询分页*/
Integer pageSize = //以后再定制化
paginationProperties.getPageSize();
int offset = //开始位置
paginationProperties.getStartIndex(pageCurrent);
RowBounds rowBounds = //分页查询条件
new RowBounds(offset, pageSize);
List<Avatar> list = avatarDao.selectPage(rowBounds, wrapper);
Assert.isNoFound(list==null||list.size()==0, "没有数据!");
return new Page<Avatar>(list, totalDataCount, pageCurrent, pageSize);
}
}
其中 paginationProperties 、 page
paginationProperties ：
@Data
@Configuration
@ConfigurationProperties(prefix = "page.config")
public class PaginationProperties {
/**
* 默认 每页 数据量
*/
final static private Integer DEFAULT_PAGESIZE = 10 ;
/**
* 每页多少条数据
*/
private Integer pageSize = DEFAULT_PAGESIZE ;
/**
* 工具:计算分页的startIndex
* @param pageCurrent 当前页码 1~n
* @return startIndex
*/
public Integer getStartIndex(Integer pageCurrent) {
return (pageCurrent-1)*pageSize ;
}
}
page
@Data
public class Page<T> implements Serializable{
private static final long serialVersionUID = 7844855365725887051L;
/**数据s*/
private List<T> datas ;
/**(分页前)总数据数*/
private Integer totalDataCount = 0 ;
/**总页数*/
private Integer pageTotal = 0 ;
/**当前页码*/
private Integer pageCurrent = 1 ;
/**当前页数据量*/
private Integer pageSize = 3;
public Page(List<T> datas, Integer totalDataCount, Integer pageCurrent, Integer pageSize) {
this.datas = datas;
this.totalDataCount = totalDataCount;
this.pageCurrent = pageCurrent;
this.pageSize = pageSize;
this.pageTotal = (totalDataCount-1)/pageSize + 1;
}
}
搞代码网（gaodaima.com）提供的所有资源部分来自互联网，如果有侵犯您的版权或其他权益，请说明详细缘由并提供版权或权益证明然后发送到邮箱[email protected]，我们会在看到邮件的第一时间内为您处理，或直接联系QQ：872152909。本网站采用BY-NC-SA协议进行授权
转载请注明原文链接：Mybatis-plus – 分页 – RowBounds
转载请注明原文链接：Mybatis-plus – 分页 – RowBounds
