一个JSP分页组件

最新推荐文章于 2025-05-26 15:27:43 发布

原创最新推荐文章于 2025-05-26 15:27:43 发布 · 1.7k 阅读

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#jsp #list #null #vector #html

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简单实用，拿到这里和大家一起分享.

package page;
import java.util.List;
import java.util.Vector;

public class Pagination {

private int sumPageNumber;
private int sumItemNumber;
private int pageNumber;
private int showItemNumber;
private String visitPageURL;
private String pageHTML;
public List interceptListByStarItemNumber(List itemList) {
  int startItem = (pageNumber-1)*showItemNumber;
  List tpItemList = new Vector();
  if (itemList == null) {
   return null;
  }
  sumItemNumber=itemList.size();
  if(sumItemNumber%showItemNumber==0){
   sumPageNumber =sumItemNumber/showItemNumber;
  }else{
   sumPageNumber =sumItemNumber/showItemNumber+1;
  }

  for (int i = 0; i < itemList.size(); i++) {
   // 不要超过截取的最大条数,
   if ((i) == (startItem + showItemNumber)) {
    break;
   }
   // 当循环到开始条数的时候，将对象添加到新的列表里面。
   if ((i) >= startItem) {
    tpItemList.add(itemList.get(i));
   }
  }

return tpItemList;
}

public String buildHTML(String tWidth) {
  String tableWidth=tWidth;
  String visitFirstPageURL="";
  String visitNextPageURL="";
  String visitPreviousURL="";
  String visitEndURL="";
  visitPageURL=visitPageURL+"?showItemNumber="+showItemNumber+"&pageNumber=";
  if(pageNumber==1){
   visitFirstPageURL="[首页] ";
   visitPreviousURL="[上一页] ";
  }else{
   visitFirstPageURL="<a href='"+visitPageURL+"1'>[首页]</a>  ";
   visitPreviousURL="<A href='"+visitPageURL+(pageNumber-1)+"'>[上一页]</A> ";
  }
  if(pageNumber==sumPageNumber){
   visitNextPageURL="[下一页] ";
   visitEndURL="[尾页] ";
  }else{
   visitNextPageURL="<a href='"+visitPageURL+(pageNumber+1)+"'>[下一页]</a> ";
   visitEndURL="<a href='"+visitPageURL+sumPageNumber+"'>[尾页]</a>";
  }

  StringBuffer sb = new StringBuffer();
  sb.append("<table width="+tableWidth);
  sb.append("><tr><td   align=right>");
  sb.append("当前是第["+pageNumber+"]页 ");
  sb.append("共["+sumPageNumber+"]页 "+"共["+sumItemNumber+"]条 ");
  sb.append(visitFirstPageURL);
  sb.append(visitPreviousURL);
  sb.append(visitNextPageURL);
  sb.append(visitEndURL);
  sb.append("</td> </tr></table>");
  return sb.toString();
}

public int getPageNumber() {
return pageNumber;
}

public void setPageNumber(int pageNumber) {
this.pageNumber = pageNumber;
}

public int getShowItemNumber() {
return showItemNumber;
}

public void setShowItemNumber(int showItemNumber) {
this.showItemNumber = showItemNumber;
}

public int getSumItemNumber() {
return sumItemNumber;
}

public int getSumPageNumber() {
return sumPageNumber;
}

public String getVisitPageURL() {
return visitPageURL;
}

public void setVisitPageURL(String visitPageURL) {
this.visitPageURL = visitPageURL;
}

public String getPageHTML() {
return pageHTML;
}
}

JSP页面调用:

<%@ page import="page.*"%>
<%@ page import="java.util.*"%>

<%@ page contentType="text/html; charset=GBK" %>

jsp分页组件：
<%
      Vector list=new Vector();
      for(int i=0;i<100;i++)
        list.add(i+" ");
        Pagination pagination = null;
        String pageNumber = request.getParameter("pageNumber");

        int showItemNumber = 5;
        if (pageNumber == null) {
        pageNumber = "1";
         }
      String HTML = "";
      if (list != null && list.size() > 0) {
      pagination = new Pagination();
      pagination.setPageNumber(Integer.parseInt(pageNumber));
      pagination.setShowItemNumber(showItemNumber);
      pagination.setVisitPageURL("Allshetuan.jsp");
      list =(Vector) pagination.interceptListByStarItemNumber(list);
      for(int i=0;i<list.size();i++)
       {
         out.print("<br>"+list.get(i));
       }
      HTML = pagination.buildHTML("600");
      out.print(HTML);
      }