page.java

struts+spring+hibernate 集成的例子

package com.lqk.page;

public class Page {
	private int totalRows; //总行数
	private int pageSize; //每页显示的行数
	private int currentPage; //当前页号
	private int totalPages; //总页数
	private int startRow; //当前页在数据库中的起始行
	
	public Page(int totalRows, int pageSize){
		this.totalRows = totalRows;
		this.pageSize = pageSize;
		this.totalPages = totalRows/pageSize;
		int mod = totalRows%pageSize;
		if(mod != 0){
			this.totalPages = this.totalPages + 1;
		}
		currentPage=1;
		startRow = 0;
	}

	public void first() {
		currentPage = 1;
		startRow = 0;
	}
	
	public void previous() {
		if (currentPage == 1) {
			return;
		}
		currentPage--;
		startRow = (currentPage - 1) * pageSize;
	}
	public void next() {
		if (currentPage < totalPages) {
			currentPage++;
		}
		startRow = (currentPage - 1) * pageSize;
	}
	public void last() {
		currentPage = totalPages;
		startRow = (currentPage - 1) * pageSize;
	}
	public void refresh(int _currentPage) {
		currentPage = _currentPage;
		if (currentPage > totalPages) {
			last();
		}
	}
	public void gotoPage(){
		if(currentPage<1)
			first();
		else if(currentPage>totalPages)
			last();
		startRow = (currentPage - 1) * pageSize;
	}
	
	
	/**
	 * @return Returns the currentPage.
	 */
	public int getCurrentPage() {
		return currentPage;
	}

	/**
	 * @param currentPage The currentPage to set.
	 */
	public void setCurrentPage(int currentPage) {
		this.currentPage = currentPage;
	}

	/**
	 * @return Returns the pageSize.
	 */
	public int getPageSize() {
		return pageSize;
	}

	/**
	 * @param pageSize The pageSize to set.
	 */
	public void setPageSize(int pageSize) {
		this.pageSize = pageSize;
	}

	/**
	 * @return Returns the startRow.
	 */
	public int getStartRow() {
		return startRow;
	}

	/**
	 * @param startRow The startRow to set.
	 */
	public void setStartRow(int startRow) {
		this.startRow = startRow;
	}

	/**
	 * @return Returns the totalPages.
	 */
	public int getTotalPages() {
		return totalPages;
	}

	/**
	 * @param totalPages The totalPages to set.
	 */
	public void setTotalPages(int totalPages) {
		this.totalPages = totalPages;
	}

	/**
	 * @return Returns the totalRows.
	 */
	public int getTotalRows() {
		return totalRows;
	}

	/**
	 * @param totalRows The totalRows to set.
	 */
	public void setTotalRows(int totalRows) {
		this.totalRows = totalRows;
	}
	
}