List集合快速排序及分页

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1.List<Map<String,Object>>集合排序

	/**
	 * List<Map<String,Object>>集合排序
	 */
	public List<Map<String, Object>> sortList(List<Map<String, Object>> list){
		Collections.sort(list,new Comparator<Map>() {
	        @Override
	        public int compare(Map o1, Map o2) {
	        	int ret = 0;
	        	//比较两个对象的顺序，如果前者小于、等于或者大于后者，则分别返回-1/0/1,顺序o1.compareTo(o2),逆序o2.compareTo(o1)
	        	ret = new Integer(o2.get("zhdf").toString()).compareTo(Integer.parseInt(o1.get("zhdf").toString()));	
		        return ret;
	        }
		});
		return list;
	}

2.List<Map<String,Object>>集合分页

	/**
	 * List<Map<String,Object>>分页
	 * @param pageIndex:当前页码
	 * @param pageSize:每页显示记录数
	 */
	public List<Map<String, Object>> pageList(List<Map<String, Object>> list,int pageIndex,int pageSize){
		int startIndex = (pageIndex - 1) * pageSize;
		int lastIndex = pageIndex * pageSize;
		int count = list.size();
		if (lastIndex >= count) {
			lastIndex = count;
        }
		return list.subList(startIndex, lastIndex);
	}