java 使用map返回多个对象组装

Object json=JSONObject.fromObject("{}");
List<Object> list = new ArrayList<Object>();
list.add("1");
list.add("2");
list.add("3");
list.add("4");
list.add("5");
list.add("6");
List<Object> result = new ArrayList<Object>();
Map<String, Object> map = new HashMap<String, Object>();
for(Object str :list){
map.put("name", str);
map.put("age", str);
result.add(map);
}
JSONArray arr=JSONArray.fromObject(result);
if(arr!=null){
json=arr;
}
System.out.println(arr);

　　输出值格式为：[{"age":"6","name":"6"},{"age":"6","name":"6"},{"age":"6","name":"6"},{"age":"6","name":"6"},{"age":"6","name":"6"},{"age":"6","name":"6"}]