pageBean:
package page;
import java.util.List;
public class pageBean {
private List list; // 要返回的某一页的记录列表
private int totalRow; // 总记录数
private int totalPage; // 总页数
private int currentPage; // 当前页
private int pageSize; // 每页记录数
private boolean isFirstPage; // 是否为第一页
private boolean isLastPage; // 是否为最后一页
private boolean hasPreviousPage; // 是否有前一页
private boolean hasNextPage; // 是否有下一页
public List getList() {
return list;
}
public void setList(List list) {
this.list = list;
}
public int getTotalRow() {
return totalRow;
}
public void setTotalRow(int totalRow) {
this.totalRow = totalRow;
}
public int getTotalPage() {
return totalPage;
}
public void setTotalPage(int totalPage) {
this.totalPage = totalPage;
}
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public boolean isFirstPage(){
return currentPage==1;
}
public boolean isLastPage(){
return currentPage==totalPage;
}
public boolean isHasNextPage(){
return currentPage!=totalPage;
}
public boolean isHasPreviousPage(){
return currentPage!=totalPage;
}
public void init() {
isFirstPage = isFirstPage();
isLastPage = isLastPage();
hasNextPage = isHasNextPage();
hasPreviousPage = isHasPreviousPage();
}
public static int countTotalPage(int totalRow,int pageSize){
return ((totalRow%pageSize)==0?(totalRow/pageSize):(totalRow/pageSize+1));
}
public static int countCurrentPage(int page){
System.out.println("scp"+page);
//return ((page==0)?1:page);
if(page==0){
page=1;
System.out.println("scp2"+page);
return page;
}
//int currentPage = (page == 0 ? 1 : page);
System.out.println("scp3"+page);
return page;
}
public static int countOffset(int currentPage,int pageSize){
return (pageSize*(currentPage-1));
}
}
JSP:
共<s:property value="pagebean.totalRow" />条记录
共<s:property value="pagebean.totalPage" />页
当前第<s:property value="pagebean.currentPage" />页
<s:if test="%{pagebean.totalPage==1}">
第一页 最后一页
</s:if>
<s:else>
<s:if test="%{pagebean.isFirstPage()}">第一页
<a href='<s:url action="show.action"><s:param name="currentPage" value="pagebean.currentPage+1"/></s:url>'>下一页</a>
</s:if>
<s:elseif test="%{pagebean.isLastPage()}">最后一页
<a href='<s:url action="show.action"><s:param name="currentPage" value="pagebean.currentPage-1"/></s:url>'>上一页</a>
</s:elseif>
<s:else>
<a href='<s:url action="show.action"><s:param name="currentPage" value="pagebean.currentPage+1"/></s:url>'>下一页</a>
<a href='<s:url action="show.action"><s:param name="currentPage" value="pagebean.currentPage-1"/></s:url>'>上一页</a>
<a href='<s:url action="show.action"><s:param name="currentPage" value="1"/></s:url>'>首页 </a>
<a href='<s:url action="show.action"><s:param name="currentPage" value="pagebean.totalPage"/></s:url>'>最后一页 </a>
</s:else>
</s:else>
DAO:
public List<TUsers> queryForPage(final String hql,final int offset,final int length);
DAOImpl:
public List<TUsers> queryForPage(final String hql, final int offset, final int length) {
// TODO Auto-generated method stub
List tusers=template.executeFind(new HibernateCallback(){
public Object doInHibernate(Session arg0)
throws HibernateException, SQLException {
// TODO Auto-generated method stub
Query query=arg0.createQuery(hql);
System.out.println(offset);
System.out.println(length);
query.setFirstResult(offset);
query.setMaxResults(length);
List tusers=query.list();
return tusers;
}
});
return tusers;
}
Service:
public pageBean queryForPage(int pageSize,int currentPage);
ServiceImpl:
public pageBean queryForPage(int pageSize, int currentPage) {
// TODO Auto-generated method stub
pageBean pagebean=new pageBean();
System.out.println("cp1"+currentPage);
int currentpage=pageBean.countCurrentPage(currentPage);
System.out.println("cp2"+currentpage);
int totalRow=findAll().size();
int totalpage=pageBean.countTotalPage(totalRow, pageSize);
final int length=pageSize;
final int offset=pageBean.countOffset(currentpage, pageSize);
System.out.println("of"+offset);
final String hql="from TUsers where 1=1";
List<TUsers> tusers=userdao.queryForPage(hql, offset, length);
pagebean.setList(tusers);
pagebean.setPageSize(pageSize);
pagebean.setTotalPage(totalpage);
pagebean.setTotalRow(totalRow);
pagebean.setCurrentPage(currentpage);
pagebean.init();
return pagebean;
}
action:
附加属性及相应get，set方法：
private pageBean pagebean;
private int currentPage;
private int pageSize;
get，set方法在此略去
public String doshow(){
UserService userservice=servicemanager.getUserService();
setPageSize(3);
System.out.println("cp"+currentPage);
pagebean=userservice.queryForPage(pageSize, currentPage);
return "success";
}
