1.新建項目並配置好包。
2.dao
//分頁查詢hql查詢條件。
public List queryforpage(final String hql,final int offset,final int length);
//查詢所有記錄數hql查詢的條件，總記錄數
public int getAllRowCount(String hql);
daoImpl
public int getAllRowCount(String hql){
return getHibernateTemplate().find(hql).size();
}
public List queryforpage(final String hql,final int offset,final int length){
List list=getHibernateTemplate().executeFind(new HibernateCallback()){
public Object doInHibernate(Session session) throws HibernateException,SQLException{
Query query=session.createQuery(hql);
query.setFirstResult(offset);
query.setMaxResults(length);
List list=query.list();
return list;
}
});
return list;
}
}
PageBean
public class PageBean implements Serializable{
private LIst list;//要返回的某一頁的記錄列表
private int allRow; //總記錄數
private int totalPage; //總頁數
private int currentPage; //當前頁
private int pageSize; //每頁記錄數
private boolean isFirstPage; //是否爲第一頁
private boolean isLastPage; //是否爲最後一頁
private boolean hasPreviousPage; //是否有前一頁
private boolean hasNextPage; //是否有下一頁
getset
public void init(){//初始化分頁信息
this.isFirstPage=isFirstPage();
this.isLastPage=isLastPage();
this.hasPreviousPage=isHasPreviousPage();
this.hasNextPage=isHasNextPage();
}
public boolean isFirstPage(){//如是當前是第一頁，，判斷頁的信息，只需get方法
return currentPage==1;
}
public boolean isLastPage(){//如果當前頁是最後一頁
return currentPage==totalPage;
}
public boolean isHasPreviousPage(){//只要當前頁不是第一頁
return currentPage!=1;
}
public boolean isHasNextPage(){
return currentPage !=totalPage;//只要當前頁不是最後一頁
}
//計算總頁數，靜態方法，供外部直接通過類名調用
public static int countTotalPage(final int pageSize,final int allRow){
int totalPage=allRow%pageSize==0?allRow/pageSize:allRow/pageSize+1;
return totalPage;
}
//計算當前頁開始記錄
public static int countOffset(final int pageSize,final int currentPage){
final int offset=pageSize*(currentPage-1);
return offset;
}
//計算當前頁，假如爲0或者沒有值使用1代替
public static int countCurrentPage(int page){
final int curPage=(page==0?1:page);
return curPage;
}
}
service//分頁查詢currentPage當前第幾頁，pageSize每頁大小
public PageBean queryforPage(int pageSize,int currentPage);
serviceImpl//分頁查詢currentpage當前第幾頁，pagesize每頁大小，封閉了分頁信息的bean
public PageBean queryforPage(int pageSize,int page){
final String hql="from com**model.u";
int allRow=dao.getAllRowCount(hql);//總記錄數
int totalPage=PageBean.countTotalPage(pageSize,allRow);//總頁數
final int offset=PageBean.countOffset(pageSize,page);//當前頁開始記錄
final int length=pageSize;//每頁記錄數
final int currentPage=PageBean.countCurrentPage(page);
List<modell> list=dao.queryforpage(hql,offset,length);
//把每頁信息保存到bean中
PageBean pageBean=new PageBean();
pageBean.setpageSize(pageSize);
pageBean.setCurrentPage(currentPage);
pageBean.setAllRow(allRow);
pageBean.setTotalPage(totalPage);
pageBean.setList(list);
pageBean.init();
return pageBean;
}
jsp
s:iterator value="pageBean.list">
<s:property
value="title"/>
<a
href="getArticle.action?id=<s:property value="id"/>">modify</a>
<a
href="deleteArticle.action?id=<s:property value="id"/>"οnclick="return askDel()"/>delete</a><br/>
</s:iterator>
共<s:property
value="pageBean.allRow"/>條記錄
共<s:property
value="pageBean.totalPage"/>頁
當前第<s:property
value="pageBean.currentPage"/>頁<br/>
<s:if
test="%{pageBean.currentPage== 1}">
第一頁上一頁
</s:if>
<s:else>
<a
href="listMyArticle.action?page=1">第一頁</a>
<a
href="listMyArticle.action?page=<s:property value="%{pageBean.currentPage-1}"/>">上一頁</a>
</s:else>
<s:if
test="%{pageBean.currentPage!= pageBean.totalPage}">
<a
href="listMyArticle.action?page=<s:property value="%{pageBean.currentPage+1}"/>">下一頁</a>
<a
href="listMyArticle.action?page=<s:propertyvalue="pageBean.totalPage"/>">最後一頁</a>
</s:if>
<s:else>
下一頁 最後一頁
</s:else>