sqlserver实现分页的几种方式

sqlserver实现分页的几种方式

第一种:使用org.springframework.data.domain.Page来进行分页

package com.cellstrain.icell.repository.repositoryImpl;

import com.cellstrain.icell.entity.V_Paper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.Pageable;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;
import org.springframework.util.StringUtils;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import java.util.List;
import java.util.Map;

@Repository(value = "vPaperRepository")
public class VPaperRepositoryImpl {
@Autowired
 private JdbcTemplate jdbcTemplate;

@PersistenceContext
 private EntityManager entityManager;

/**
 * 后台分页查询
 * @param condition
 * @param pageable
 * @return
 */
 public Page findByCondition(String condition, Pageable pageable){
 StringBuffer hql = new StringBuffer("from V_Paper p where ");
 if(!StringUtils.isEmpty(condition)){
 hql.append("p.title like '%"+condition+"%' or p.entryName like '%"+condition+"%' or p.pName like '%"+condition+"%' or p.auth like '%"+condition+"%' order by p.paperId desc");
 }else{
 hql.append("1=1 order by p.paperId desc");
 }
 Query query = entityManager.createQuery(hql.toString());
 //得到符合记录的总数
 int count = query.getResultList().size();
 Long total = (long)count;
 //分页查询
 query.setFirstResult(pageable.getOffset());
 query.setMaxResults(pageable.getPageSize());
 List<V_Paper> proteinRanksList = query.getResultList();
 //封装Page
 Page<V_Paper> page =new PageImpl<V_Paper>(proteinRanksList,pageable,total);
 }

}

第二种:使用top关键字来进行分页

package com.cellstrain.icell.repository.repositoryImpl;

import com.cellstrain.icell.entity.V_Paper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.Pageable;
import org.springframework.jdbc.core.BeanPropertyRowMapper;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;
import org.springframework.util.StringUtils;

import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import java.util.List;
import java.util.Map;

@Repository(value = "vPaperRepository")
public class VPaperRepositoryImpl {
@Autowired
 private JdbcTemplate jdbcTemplate;

@PersistenceContext
 private EntityManager entityManager;

/**
 * 后台分页查询
 * @param condition
 * @param pageable
 * @return
 */
 public Page findByCondition(String condition, Pageable pageable){
 if(StringUtils.isEmpty(condition)){
 condition="";
 }
int pageSize=pageable.getPageSize();
int pageNow=pageable.getPageNumber();
 String sql="select top "+pageSize+" vp.paperId,vp.title,vp.entryName,vp.source,vp.recordDate,vp.url,vp.auth,dbo.JoinStr(vp.paperId) as pNames" +
" from V_Paper vp where vp.paperId not in(select top "+pageSize*pageNow+" paperId from V_Paper order by paperId desc) and (title like '%"+condition+"%' or contents like '%"+condition+"%') " +
"group by vp.paperId,vp.title,vp.entryName,vp.source,vp.recordDate,vp.url,vp.auth order by vp.paperId desc";
List paperList=null;
 Long total = jdbcTemplate.queryForObject("select count(*) from V_Paper",Long.class);
try{
 paperList=jdbcTemplate.queryForList(sql);
 }catch (Exception e){
 e.printStackTrace();
 }
 Page page = new PageImpl(paperList, pageable, total);
return page;
 }
}