记录成长

/**
				* @author Fred Zhu
				* 分页辅助工具
				*/
				public class PageBean {

				private int currentPage = 1;// 当前页数
				private int totalPages = 0;// 总页数
				private int pageSize = 0;// 每页显示数
				private int totalRows = 0;// 总数据数
				private int startNum = 0;// 开始记录
				private int endNum = pageSize;//结束记录
				private int nextPage = 0;// 下一页
				private int previousPage = 0;// 上一页
				private boolean hasNextPage = false;// 是否有下一页
				private boolean hasPreviousPage = false;// 是否有前一页

				public PageBean(int pageSize, int currentPage, int totalRows) {

				this.pageSize = pageSize;
				this.currentPage = currentPage;
				this.totalRows = totalRows;

				//计算总页数
				if ((totalRows % pageSize) == 0) {
				totalPages = totalRows / pageSize;
				} else {
				totalPages = totalRows / pageSize + 1;
				}

				//是否有下一页
				if (currentPage >= totalPages) {
				hasNextPage = false;
				currentPage = totalPages;
				} else {
				hasNextPage = true;
				}

				//是否有上一页
				if (currentPage <= 1) {
				hasPreviousPage = false;
				currentPage = 1;
				} else {
				hasPreviousPage = true;
				}

				startNum = (currentPage - 1) * pageSize;//开始记录数

				if(totalPages-currentPage<1){
				endNum = totalRows;
				}else{
				endNum = currentPage*pageSize;
				}

				nextPage = currentPage + 1;//下一页页码

				previousPage = currentPage - 1;//上一页页码

				if (nextPage >= totalPages) {
				nextPage = totalPages;
				}

				if (previousPage <= 1) {
				previousPage = 1;
				}

				}

				public void refresh(int currentPage){
				this.currentPage = currentPage;
				startNum = (currentPage - 1) * pageSize;
				if(totalPages-currentPage<1){
				endNum = totalRows;
				}else{
				endNum = currentPage*pageSize;
				}
				}

				public boolean isHasNextPage() {

				return hasNextPage;

				}

				public boolean isHasPreviousPage() {

				return hasPreviousPage;

				}

				/**
				* @return the nextPage
				*/
				public int getNextPage() {
				return nextPage;
				}

				/**
				* @param nextPage
				*             the nextPage to set
				*/
				public void setNextPage(int nextPage) {
				this.nextPage = nextPage;
				}

				/**
				* @return the previousPage
				*/
				public int getPreviousPage() {
				return previousPage;
				}

				/**
				* @param previousPage
				*             the previousPage to set
				*/
				public void setPreviousPage(int previousPage) {
				this.previousPage = previousPage;
				}

				/**
				* @return the currentPage
				*/
				public int getCurrentPage() {
				return currentPage;
				}

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

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

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

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

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

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

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

				/**
				* @param hasNextPage
				*             the hasNextPage to set
				*/
				public void setHasNextPage(boolean hasNextPage) {
				this.hasNextPage = hasNextPage;
				}

				/**
				* @param hasPreviousPage
				*             the hasPreviousPage to set
				*/
				public void setHasPreviousPage(boolean hasPreviousPage) {
				this.hasPreviousPage = hasPreviousPage;
				}

				/**
				* @return the startNum
				*/
				public int getStartNum() {
				return startNum;
				}

				/**
				* @param startNum
				*             the startNum to set
				*/
				public void setStartNum(int startNum) {
				this.startNum = startNum;
				}

				public int getEndNum() {
				return endNum;
				}

				public void setEndNum(int endNum) {
				this.endNum = endNum;
				}
				}