Struts2分页1

前段时间完成了一个项目，其中涉及到分页的功能，下面我将其拿出来与大家进行共享。

 

第一、是前台的jsp页面代码：

<s:if test="#request.hasprepage==false && #request.hasnextpage==true"><br/>
<%Page pages=(Page)request.getAttribute("pages");
for(int i=1;i<=pages.getTotalPage();i++){
%>
[<a href="curNewsPage.action?currentPage=<%=i %>"><%=i %></a>]
<%}%>
<a href="curNewsPage.action?currentPage=<s:property value="currentPage+1"/>">
 <img class="more_news_next" src="common/images/iepiao/next.gif" /></a>
</s:if>

<s:elseif test="#request.hasnextpage==false && #request.hasprepage==false"><br/>
<%Page pages=(Page)request.getAttribute("pages");
for(int i=1;i<=pages.getTotalPage();i++){
%>
[<a href="curNewsPage.action?currentPage=<%=i %>"><%=i %></a>]
<%}%>
</s:elseif>

<s:elseif test="#request.hasnextpage==true && #request.hasprepage==true"><br/>
<a href="curNewsPage.action?currentPage=<s:property value="currentPage-1"/>">
<img class="more_news_next" src="common/images/iepiao/pre.gif"/></a>
<%Page pages=(Page)request.getAttribute("pages");
for(int i=1;i<=pages.getTotalPage();i++){
%>
[<a href="curNewsPage.action?currentPage=<%=i %>"><%=i %></a>]
<%}%>
<a href="curNewsPage.action?currentPage=<s:property value="currentPage+1"/>">
<img class="more_news_next" src="common/images/iepiao/next.gif" /></a>  
</s:elseif>

<s:else>
<a href="curNewsPage.action?currentPage=<s:property value="currentPage-1"/>">
<img class="more_news_next" src="common/images/iepiao/pre.gif"/></a>

<%Page pages=(Page)request.getAttribute("pages");
for(int i=1;i<=pages.getTotalPage();i++){
%>
[<a href="curNewsPage.action?currentPage=<%=i %>"><%=i %></a>]
<%}%>
</s:else>

 

第二、action中的部分代码：

     int numb = bulletinService.getTotalNumb();
     if(currentPage==0){
      currentPage=1;}
        Page pages=pageutil.createPage(16, numb, currentPage);
     if(currentPage>pages.getTotalPage())
     {
      currentPage=pages.getTotalPage();
     }
     if(currentPage<1){
      currentPage=1;
     }
     
     pages=pageutil.createPage(16, numb, currentPage);
     this.setList(bulletinService.findAllByPageStatusType("Bulletin", pages.getBeginIndex(), pages.getEveryPage(), "enteringdate", "desc"));
     
     Map request=(Map)ActionContext.getContext().get("request");  
     request.put("hasprepage",pageutil.getHasPrePage(currentPage));
     request.put("hasnextpage", pageutil.getHasNextPage(pages.getTotalPage(), currentPage));
     request.put("pages",pages);

 

第三、service实现类代码：

     public List findAllByPageStatusType(String table,int start,int limit,String orderby,String desc){
            return this.bulletinDao.findAllByPageStatusType(table, start, limit, orderby, desc);
     }

 

第四、分页工具类代码：

public class PageUtil {

 
 
 public static Page createPage(int everyPage,int totalCount,int currentPage) {
  everyPage = getEveryPage(everyPage);
  currentPage = getCurrentPage(currentPage);
  int totalPage = getTotalPage(everyPage, totalCount);
  int beginIndex = getBeginIndex(everyPage, currentPage);
  boolean hasPrePage = getHasPrePage(currentPage);
  boolean hasNextPage = getHasNextPage(totalPage, currentPage);
  return new Page(everyPage, totalCount, totalPage, currentPage,beginIndex, hasPrePage,  hasNextPage);
 }
 
 public static Page createPage(Page page,int totalCount) {
  int everyPage = getEveryPage(page.getEveryPage());
  int currentPage = getCurrentPage(page.getCurrentPage());
  int totalPage = getTotalPage(everyPage, totalCount);
  int beginIndex = getBeginIndex(everyPage, currentPage);
  boolean hasPrePage = getHasPrePage(currentPage);
  boolean hasNextPage = getHasNextPage(totalPage, currentPage);
  return new Page(everyPage, totalCount, totalPage, currentPage,beginIndex, hasPrePage,  hasNextPage);
 }
 
 public static int getEveryPage(int everyPage) {
  return everyPage == 0 ? 10 : everyPage;
 }
 
 public static int getCurrentPage(int currentPage) {
  return currentPage == 0 ? 1 : currentPage;
 }
 
 public static int getTotalPage(int everyPage,int totalCount) {
  int totalPage = 0;
  if(totalCount % everyPage == 0) {
   totalPage = totalCount / everyPage;
  } else {
   totalPage = totalCount / everyPage + 1;
  }
  return totalPage;
 }
 
 public static int getBeginIndex(int everyPage,int currentPage) {
  return (currentPage - 1) * everyPage;
 }
 
 public static boolean getHasPrePage(int currentPage) {
  return currentPage == 1 ? false : true;
 }
 
 public static boolean getHasNextPage(int totalPage, int currentPage) {
  return currentPage == totalPage || totalPage == 0 ? false : true;
 }
 
}

 

第五、分页基类代码：

public class Page {
 
 // 1.(everyPage)
 private int everyPage;
 // 2.(totalCount)
 private int totalCount;
 // 3.(totalPage)
 private int totalPage;
 // 4.(currentPage)
 private int currentPage;
 
 // 5.(beginIndex)
 private int beginIndex;
 // 6.(hasPrePage)
 private boolean hasPrePage;
 // 7.(hasNextPage)
 private boolean hasNextPage;
         public Page(int everyPage2, int totalCount2, int totalPage2,
   int currentPage2, int beginIndex2, boolean hasPrePage2,
   boolean hasNextPage2) {
  // TODO Auto-generated constructor stub
         
          this.everyPage=everyPage2;
          this.totalCount=totalCount2;
          this.totalPage=totalPage2;
          this.currentPage=currentPage2;
          this.beginIndex=beginIndex2;
          this.hasPrePage=hasPrePage2;
          this.hasNextPage=hasNextPage2;
 }

         public Page(){
         
         }
 public int getEveryPage() {
  return everyPage;
 }
 public void setEveryPage(int everyPage) {
  this.everyPage = everyPage;
 }
 public int getTotalCount() {
  return totalCount;
 }
 public void setTotalCount(int totalCount) {
  this.totalCount = totalCount;
 }
 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 getBeginIndex() {
  return beginIndex;
 }
 public void setBeginIndex(int beginIndex) {
  this.beginIndex = beginIndex;
 }
 public boolean isHasPrePage() {
  return hasPrePage;
 }
 public void setHasPrePage(boolean hasPrePage) {
  this.hasPrePage = hasPrePage;
 }
 public boolean isHasNextPage() {
  return hasNextPage;
 }
 public void setHasNextPage(boolean hasNextPage) {
  this.hasNextPage = hasNextPage;
 }

}

 

***不足之处还请各位多多指教***