分页类

public class Page {// 1.每页显示数量(everyPage)private int everyPage;// 2.总记录数(totalCount)private int totalCount;// 3.总页数(totalPage)private int totalPage;// 4.当前页(currentPage)private int currentPage;// 5.起始点(beginIndex)private int beginIndex;// 6.是否有上一页(hasPrePage)private boolean hasPrePage;// 7.是否有下一页(hasNextPage)private boolean hasNextPage;public Page(int everyPage, int totalCount, int totalPage, int currentPage,int beginIndex, boolean hasPrePage, boolean hasNextPage) {this.everyPage = everyPage;this.totalCount = totalCount;this.totalPage = totalPage;this.currentPage = currentPage;this.beginIndex = beginIndex;this.hasPrePage = hasPrePage;this.hasNextPage = hasNextPage;}//构造函数，默认public Page(){}//构造方法，对所有属性进行设置public int getEveryPage() {return everyPage;}public void setEveryPage(int everyPage) {this.everyPage = everyPage;}public int getTotalCount() {return totalCount;}public void setTotalCount(int totalCount) {this.totalCount = totalCount;}public int getTotalPage() {return totalPage;}public void setTotalPage(int totalPage) {this.totalPage = totalPage;}public int getCurrentPage() {return currentPage;}public void setCurrentPage(int currentPage) {this.currentPage = currentPage;}public int getBeginIndex() {return beginIndex;}public void setBeginIndex(int beginIndex) {this.beginIndex = beginIndex;}public boolean isHasPrePage() {return hasPrePage;}public void setHasPrePage(boolean hasPrePage) {this.hasPrePage = hasPrePage;}public boolean isHasNextPage() {return hasNextPage;}public void setHasNextPage(boolean hasNextPage) {this.hasNextPage = hasNextPage;}}

/* * 分页信息辅助类 */public class PageUtil {public static Page createPage(int everyPage,int totalCount,int currentPage) {everyPage = getEveryPage(everyPage);currentPage = getCurrentPage(currentPage);int totalPage = getTotalPage(everyPage, totalCount);int beginIndex = getBeginIndex(everyPage, currentPage);boolean hasPrePage = getHasPrePage(currentPage);boolean hasNextPage = getHasNextPage(totalPage, currentPage);return new Page(everyPage, totalCount, totalPage, currentPage,beginIndex, hasPrePage,  hasNextPage);}public static Page createPage(Page page,int totalCount) {int everyPage = getEveryPage(page.getEveryPage());int currentPage = getCurrentPage(page.getCurrentPage());int totalPage = getTotalPage(everyPage, totalCount);int beginIndex = getBeginIndex(everyPage, currentPage);boolean hasPrePage = getHasPrePage(currentPage);boolean hasNextPage = getHasNextPage(totalPage, currentPage);return new Page(everyPage, totalCount, totalPage, currentPage,beginIndex, hasPrePage,  hasNextPage);}//设置每页显示记录数public static int getEveryPage(int everyPage) {return everyPage == 0 ? 10 : everyPage;}//设置当前页public static int getCurrentPage(int currentPage) {return currentPage == 0 ? 1 : currentPage;}//设置总页数,需要总记录数，每页显示多少public static int getTotalPage(int everyPage,int totalCount) {int totalPage = 0;if(totalCount % everyPage == 0) {totalPage = totalCount / everyPage;} else {totalPage = totalCount / everyPage + 1;}return totalPage;}//设置起始点，需要每页显示多少，当前页public static int getBeginIndex(int everyPage,int currentPage) {return (currentPage - 1) * everyPage;}//设置是否有上一页，需要当前页public static boolean getHasPrePage(int currentPage) {return currentPage == 1 ? false : true;}//设置是否有下一个，需要总页数和当前页public static boolean getHasNextPage(int totalPage, int currentPage) {return currentPage == totalPage || totalPage == 0 ? false : true;}}

进行测试：

public class Test {public static void main(String[] args) {Page page = PageUtil.createPage(5, 34, 7);System.out.println(page.getBeginIndex());System.out.println(page.getCurrentPage());System.out.println(page.getEveryPage());System.out.println(page.getTotalCount());System.out.println(page.getTotalPage());System.out.println(page.isHasNextPage());System.out.println(page.isHasPrePage());}}