我正在使用Jackson转换对象，包括数组对象到www.example.com文件，但转换数组对象时的结果看起来不像我预期的那样好。application.properties file but the result when convert array object look not good as I expected. This is my code:

JSONSerializer serializer = new JSONSerializer().rootName("application").prettyPrint(false);
 String json = serializer.serialize(configDto.getValue());

 ObjectMapper om = new ObjectMapper();
 JsonNode tree = om.readTree(json);
 Properties props;
 JavaPropsMapper mapper = new JavaPropsMapper();

 props = mapper.writeValueAsProperties(tree);
 props.store(new FileOutputStream(file), "");

输入：

{
  "nation": [
      {
        "key": "France"
      },
      {
        "key": "Spain"
      },
      {
        "key": "England"
      }
    ],
    "movie": "Avatar 2"
}

结果：

application.nation.1 = France
application.nation.2 = Spain
application.nation.3 = England
application.movie = Avatar 2

预期结果：

application.nation[1] = France
application.nation[2] = Spain
application.nation[3] = England
application.movie = Avatar 2

我怎样才能把数据转换成我期望的结果呢？对不起，我的英语不好!谢谢!