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ApplicationPower common-util
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package com.power.common.model;

import java.io.Serializable;
import java.text.MessageFormat;
import java.util.List;

/**
 * 主要用于前端内容展示分页,分页链接由后台输出
 * PageVo根据自定义的url直接生成链接，messageFormat占位替换生成页码
 * USAGE:
 * RequestMapping(value="news/p{pageIndex}.htm",method = RequestMethod.GET)
 * public String list(@PathVariable int pageIndex,Model model){
 * 	try{
 *      PageVo pageDto = this.newsService.getPage(0,pageIndex,12);
 *      pageDto.setUrl("news/p{0}.htm");
 *      model.addAttribute("list",pageDto);
 *	}catch (Exception e){
 *		 return "";
 *	}
 *	return "forward:/news.jsp";
 *}
 * @author sunyu
 * @param  Generics
 */
public class PageVo implements Serializable {
	private static final long serialVersionUID = 1923401118856169487L;
	private Long total;//total record
	private String url;//使用messageFormat占位替换
	private Integer pageIndex;// 页码,当前页数
	private Integer pageSize;// 分页条数
	private List items;// 查询结果
	private int displayEntries = 5;//连续分页主体部分显示的分页条目数
	private int edgeEntries = 1;//两侧显示的首尾分页的条目数

	//default
	public PageVo() {
		super();
	}

	public PageVo(Long total, Integer pageIndex, Integer pageSize, List items) {
		super();
		this.total = total;
		this.pageIndex = pageIndex;
		this.pageSize = pageSize;
		this.items = items;
	}

	public Long getTotal() {
		return total;
	}

	public void setTotal(Long total) {
		this.total = total;
	}

	public Integer getPageIndex() {
		return pageIndex;
	}

	public void setPageIndex(Integer pageIndex) {
		this.pageIndex = pageIndex;
	}

	public Integer getPageSize() {
		return pageSize;
	}

	public void setPageSize(Integer pageSize) {
		this.pageSize = pageSize;
	}

	public List getItems() {
		return items;
	}

	public void setItems(List items) {
		this.items = items;
	}

	@Override
	public String toString() {
		return "PageVo [total=" + total + ", pageIndex=" + pageIndex
				+ ", pageSize=" + pageSize + ", items=" + items + "]";
	}

	public String getUrl() {
		return url;
	}

	public void setUrl(String url) {
		this.url = url;
	}
	public String getNavigation(){
		Integer totalPage = (int) (total % pageSize > 0 ? (total
				/ pageSize + 1) : (total / pageSize));
		//From jQuery pagination
		//int ne_half = ((displayEntries&1)==1)?(displayEntries/2+1):displayEntries/2;
		int ne_half = ((displayEntries&1)==1)?(displayEntries>>1)+1:displayEntries>>1;
		int upper_limit = totalPage-displayEntries;
		pageIndex = (pageIndex<1)?1:pageIndex;
		int currentPage = pageIndex -1;

		int start = currentPage>ne_half?Math.max(Math.min(currentPage-ne_half, upper_limit), 0):0;
		int end = currentPage>ne_half?Math.min(currentPage+ne_half,totalPage):Math.min(displayEntries,totalPage);
		StringBuffer buffer = new StringBuffer();
		buffer.append("");
		// Generate "Previous"-Link
		if(pageIndex==1||totalPage==0){
			buffer.append("上一页");
		}else{
			String str = MessageFormat.format("上一页");
		}
		// Generate starting points
		if(start>0&&edgeEntries>0){
			int end1 = Math.min(edgeEntries, start);
			for(int i=0; i").append(i+1).append("");
			}
			if(edgeEntries < start) {
				buffer.append("...");
			}
		}
		// Generate interval links
		for(int i= start; i").append(i+1).append("");
			}else{
				String str = MessageFormat.format("").append(i+1).append("");
			}
		}
		// Generate ending points
		if (end < totalPage &&edgeEntries > 0) {
			if(totalPage-edgeEntries > end) {
				buffer.append("...");
			}
			int begin = Math.max(totalPage-edgeEntries, end);
			for(int i=begin; i").append(i+1).append("");
			}
		}
		// Generate "Next"-Link
		if(pageIndex == totalPage || totalPage == 0){
			buffer.append("下一页");
		}else{
			String str = MessageFormat.format("下一页");
		}
		buffer.append("");
		return buffer.toString();
	}
}