java分页实现

我就是我 2022-06-14 08:15 136阅读 0赞

package com.tradingplatform.dto;
    
    import java.util.List;
    
    /**
     * 分页原理页面传送数据的Dto
     * @param <T>：传送的数据的类型
     */
    public class PageJumpDataDto<T> {
    	private int currentPage=1;	//当前页
    	private int totalPage=0;	//总共页
    	private int totalRecord=0;	//总记录数
    	private List<T> listData;	//数据
    	private int pageSize=6;		//每页记录数
    	
    	public PageJumpDataDto() {}
    
    	public PageJumpDataDto(int currentPage, int totalPage, int totalRecord, List<T> listData, int pageSize) {
    		super();
    		this.currentPage = currentPage;
    		this.totalPage = totalPage;
    		this.totalRecord = totalRecord;
    		this.listData = listData;
    		this.pageSize = pageSize;
    	}
    	
    	public PageJumpDataDto(int currentPage, List<T> listData) {
    		if(listData==null) return;
    		this.totalRecord = listData.size();
    		//得到总页数
    		this.totalPage = this.totalRecord/this.pageSize;
    		if(this.totalRecord%this.pageSize!=0) this.totalPage+=1;
    		//得到当前页数
    		if(this.totalPage<currentPage){
    			this.currentPage=this.totalPage;
    		}else{
    			this.currentPage=currentPage;
    		}
    		if(this.currentPage<1) this.currentPage=1;
    		//得到截取的展示数据
    		int begin=this.pageSize*(this.currentPage-1);
    		int end= (this.pageSize*this.currentPage)>this.totalRecord?this.totalRecord:(this.pageSize*this.currentPage);
    		this.listData=listData.subList(begin, end);
    	}
    	
    	public PageJumpDataDto(int currentPage, List<T> listData,int pageSize) {
    		if(listData==null) return;
    		this.pageSize=pageSize;
    		this.totalRecord = listData.size();
    		//得到总页数
    		this.totalPage = this.totalRecord/this.pageSize;
    		if(this.totalRecord%this.pageSize!=0) this.totalPage+=1;
    		//得到当前页数
    		if(this.totalPage<currentPage){
    			this.currentPage=this.totalPage;
    		}else{
    			this.currentPage=currentPage;
    		}
    		if(this.currentPage<1) this.currentPage=1;
    		//得到截取的展示数据
    		int begin=this.pageSize*(this.currentPage-1);
    		int end= (this.pageSize*this.currentPage)>this.totalRecord?this.totalRecord:(this.pageSize*this.currentPage);
    		this.listData=listData.subList(begin, end);
    	}
    
    	public int getCurrentPage() {
    		return currentPage;
    	}
    	public void setCurrentPage(int currentPage) {
    		this.currentPage = currentPage;
    	}
    	public int getTotalPage() {
    		return totalPage;
    	}
    	public void setTotalPage(int totalPage) {
    		this.totalPage = totalPage;
    	}
    	public int getTotalRecord() {
    		return totalRecord;
    	}
    	public void setTotalRecord(int totalRecord) {
    		this.totalRecord = totalRecord;
    	}
    
    	public List<T> getListData() {
    		return listData;
    	}
    
    	public void setListData(List<T> listData) {
    		this.listData = listData;
    	}
    
    	public int getPageSize() {
    		return pageSize;
    	}
    	public void setPageSize(int pageSize) {
    		this.pageSize = pageSize;
    	}
    	
    }