viewlist.java

eclipse开发入门与提高的全部源码

package cn.com.shopadmin;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpSession;
public class ViewList {
	public void display(List list,HttpSession session,Integer pageId,String keyword){
		int iPageId = 0;
		if (pageId!=null) iPageId = pageId.intValue();
		if (iPageId<0) iPageId = 0;
	    /*
	     * 获取总页数
	     */
		int pageCount = 0;
		if (list.size()%Constants.PRODUCT_PAGE_SIZE ==0){
			pageCount=list.size() / Constants.PRODUCT_PAGE_SIZE;
		}
		else{
			pageCount=list.size() / Constants.PRODUCT_PAGE_SIZE+1;
		}
		/*
		 * 分页显示
		 */
		if ((list.size()>iPageId * Constants.PRODUCT_PAGE_SIZE )&&(iPageId>=0)){
			List  dispList=new ArrayList();
			for (int i=iPageId*Constants.PRODUCT_PAGE_SIZE;i<(iPageId+1)*Constants.PRODUCT_PAGE_SIZE;i++){
				if (i<list.size()){
					dispList.add(list.get(i));
				}
			}
			/*
			 * 存储分页显示信息至session中
			 */
			session.setAttribute(Constants.SEARCH_LIST_KEY,dispList);
			session.setAttribute(Constants.CUR_PAGEID_KEY,new Integer(iPageId));
			session.setAttribute(Constants.PAGE_COUNT_KEY,new Integer(pageCount));
			session.setAttribute(Constants.CUR_KEYWORD_KEY,keyword);
		}
	}
}