Java列表為json格式

Question

這是我的代碼：

public String getList() throws JSONException {
        List<User> data = member.getCurrentMembers() ;
        for (User u : data) {
            JSONObject datas = new JSONObject();
            datas.put("name", u.getUserName());
            datas.put("account", u.getAccount());
            datas.put("edit", u.getUserId());
            datas.put("id", u.getUserId());
            System.out.println(datas);  
        }
        return str;
    }

現在它將打印：

{"name":"aa","id":1,"edit":1,"account":"aa@qq.com"}
{"name":"qq","id":2,"edit":2,"account":"qq@qq.com"}
{"name":"ww","id":3,"edit":3,"account":"ww@qq.com"}

我想要的json格式是：

{ 
  "Data": [
    {"name":"aa","id":1,"edit":1,"account":"aa@qq.com"},
    {"name":"qq","id":2,"edit":2,"account":"qq@qq.com"},
    {"name":"ww","id":3,"edit":3,"account":"ww@qq.com"},     
  ]
}

我能做什么？
請指導我。 謝謝

Answer 1

這可以解決問題

public String getList() throws JSONException {
    List<User> data = member.getCurrentMembers() ;
    JSONArray array = new JSONArray();
    for (User u : data) {
        JSONObject datas = new JSONObject();
        datas.put("name", u.getUserName());
        datas.put("account", u.getAccount());
        datas.put("edit", u.getUserId());
        datas.put("id", u.getUserId());
        array.put(datas);
    }
    JSONObject result = new JSONObject();
    result.put("Data", array);
}

希望對丹有幫助