工具类之三：分页PageBean

PageBean类：

public class PageBean {private int pageSize = 10;private int totalPage = 0;private int totalRecord = 0;private int currentPage = 1;private boolean hasPreviousPage = false;private boolean hasNextPage = false;private int endPage = 0;private int startPage = 0;private boolean isPaging = true;private List<?> data;public PageBean() {}public PageBean(int pageSize) {if (pageSize > 0) {this.pageSize = pageSize;}}public PageBean(int pageSize, int currentPage, boolean isPaging) {if (pageSize > 0) {this.pageSize = pageSize;}if (currentPage <= 0) {currentPage = 1;}this.currentPage = currentPage;this.isPaging = isPaging;}public void doPaging() {if ((totalRecord % pageSize) == 0) {totalPage = totalRecord / pageSize;} else {totalPage = totalRecord / pageSize + 1;}if (currentPage > 0) {calculatePage();}}private void calculatePage() {if ((currentPage - 1) > 0) {hasPreviousPage = true;} else {hasPreviousPage = false;}if (currentPage >= totalPage) {hasNextPage = false;} else {hasNextPage = true;}if (currentPage * pageSize < totalRecord) {endPage = currentPage * pageSize;startPage = endPage - pageSize;} else {endPage = totalRecord;startPage = pageSize * (totalPage - 1);}}public int getPageSize() {return pageSize;}public void setPageSize(int pageSize) {this.pageSize = pageSize;}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 getTotalRecord() {return totalRecord;}public void setTotalRecord(int totalRecord) {this.totalRecord = totalRecord;}public boolean isHasPreviousPage() {return hasPreviousPage;}public void setHasPreviousPage(boolean hasPreviousPage) {this.hasPreviousPage = hasPreviousPage;}public boolean isHasNextPage() {return hasNextPage;}public void setHasNextPage(boolean hasNextPage) {this.hasNextPage = hasNextPage;}public int getEndPage() {return endPage;}public void setEndPage(int endPage) {this.endPage = endPage;}public int getStartPage() {return startPage;}public void setStartPage(int startPage) {this.startPage = startPage;}public List<?> getData() {return data;}public void setData(List<?> data) {this.data = data;}public boolean isPaging() {return isPaging;}public void setPaging(boolean isPaging) {this.isPaging = isPaging;}}

使用：

    @Override    public PageBean listActivationCodes(CouponModel form, UserVo currVisitor)            throws ServiceException {        List<CouponVo> coupons = listByCouponTemplateIdAndOrgId(form,                currVisitor);        PageBean page = new PageBean(form.getPageSize(),                form.getPureCurPageNum(), form.getIsPaging());        page.setData(coupons);        page.setTotalRecord(coupons.size());        return page;    }