String转list<Map<String,string>> list

String appNames = "[{"cpuNumber":4,"memorySize":8,"serverName":"ddd","serversNumber":1},{"cpuNumber":4,"memorySize":8,"serverName":"aaa","serversNumber":1},{"cpuNumber":2,"memorySize":4,"serverName":"bbb","serversNumber":1}]";
List<Map<String, String>> list = (List<Map<String, String>>) JSONArray.parse(appNames);
        System.out.println(list);
        for(Map<String,String> mapList : list){
            System.out.println(mapList);
            for(Map.Entry entry : mapList.entrySet()){
                System.out.println(entry.getKey());
                System.out.println(entry.getValue());
                if("serverName".equals(entry.getKey())){
                    System.out.println(entry.getValue());
                }
            }
        }