List<Map<String,String>>根据key值排序

		List<Map<String,String>> rsInfoList = new ArrayList<Map<String,String>>();
		Map<String,String> key = new HashMap<String,String>(); 
		key.put("NO", "2");
		key.put("NAME", "AAA");
		rsInfoList.add(key);
		key = new HashMap<String,String>(); 
		key.put("NO", "3");
		key.put("NAME", "BBB");
		rsInfoList.add(key);
		key = new HashMap<String,String>(); 
		key.put("NO", "1");
		key.put("NAME", "CCC");
		rsInfoList.add(key);
		System.out.println("排序前："+rsInfoList);
		
		//根据NO字段进行排序
		Collections.sort(rsInfoList, new Comparator<Map<String, String>>() {  
            	public int compare(Map<String, String> o1, Map<String, String> o2) {  
                return o2.get("NO").compareTo(o1.get("NO"));  
            		}  
         	}); 
		
		System.out.println("排序后："+rsInfoList);

 结果：