获取分页的页码导航栏

/**
	 * 获取分页的最左边和最右边
	 * @param currentPage 当前页
	 * @param maxPage 最大页数
	 * @index 当前页所处页码导航的位置1表示第一位，2表示第二位
	 * @return
	 */
	public static int[] getLeftAndRight(int currentPage, int maxPage, int index) {
		currentPage = currentPage - index + 1;
		if (currentPage <= 0) {
			currentPage = 1;
		}
		int left = 1;
		int right = maxPage;
		int length = 5;
		if (maxPage > length) {
			int rule = currentPage + length - 1;
			if (rule <= maxPage) {
				left = currentPage;
				right = rule;
			} else {
				left = maxPage - length + 1;
				right = maxPage;
			}
		}
		return new int[] { left, right };
	}