我想将 JSONObject 添加到 JSONArray 并且该 JSONArray 包含在其他 JSONObject 中 [英] I want to add a JSONObject to a JSONArray and that JSONArray included in other JSONObject

问题描述

我需要以下在java中构造的结构并将其作为响应发送:

I need below kind of structure constructed in java and send it as response :

var abc = {
  "action": "Remove",
  "datatable": [
    { "userid": "userid0", "username": "name0" },
    { "userid": "userid1", "username": "name1" },
    { "userid": "userid2", "username": "name2" },
    { "userid": "userid3", "username": "name3" }
  ],
  "msgType": "success"
};

我在做:

JSONArray jsonArray = new JSONArray();

for (loop) {
    JSONObject jsonObj= new JSONObject();
    jsonObj.put("srcOfPhoto", srcOfPhoto);
    jsonObj.put("username", "name"+count);
    jsonObj.put("userid", "userid"+count);

    jsonArray.add(jsonObj.toJSONString());
}

Map paramMap = new HashMap();

paramMap.put("action", "remove");

paramMap.put("datatable", jsonArray );

paramMap.put(Constant.MSG_TYPE , Constant.SUCCESS);

getJSONMessage(paramMap);

这里上面的函数是将 paramMap 转换为 json 字符串，如:

and here above function is converting paramMap into json string like:

public static String getJSONMessage(Map<String, String> paramMap) {
    if (paramMap != null && paramMap.size() > 0)
        return JSONObject.toJSONString(paramMap);
    else
        return "";
}

但它没有创建正确的结构，有人可以帮助我吗?

but it is not creating the right structure, can anybody help me in this?

这是我得到的输出:

{"action":"Remove","datatable":[{\"userid\":\"userid0\",\"srcOfPhoto\":\"users\\\/JMMBGTCHG.jpg\",\"username\":\"name0\"}"],"msgType":"success"}

没有在 javascript 中解析.

which is not being parsed in javascript.

var json = eval('(' + respText+')');
alert("contents>>"+json.datatable);
alert("contents.datatable[0]>>>"+json.datatable[0].username);

最后一个警报显示未定义.

last alert showing undefined.

哦，对不起，我忘了粘贴最后一行，这是最后一行:

ohh sorry I forgot to paste last line , here is the last line:

getJSONMessage(paramMap);

及以上函数是将 paramMap 转换为 json 字符串:

and above function is converting paramMap into json string:

public static String getJSONMessage(Map<String, String> paramMap){
    if(paramMap != null && paramMap.size() > 0)
        return JSONObject.toJSONString(paramMap);
    else
        return "";
}

推荐答案

JSONArray jsonArray = new JSONArray();

for (loop) {
    JSONObject jsonObj= new JSONObject();
    jsonObj.put("srcOfPhoto", srcOfPhoto);
    jsonObj.put("username", "name"+count);
    jsonObj.put("userid", "userid"+count);

    jsonArray.put(jsonObj.valueToString());
}

JSONObject parameters = new JSONObject();

parameters.put("action", "remove");

parameters.put("datatable", jsonArray );

parameters.put(Constant.MSG_TYPE , Constant.SUCCESS);

如果您想要将它放入 JSONObject，为什么要使用 Hashmap?

Why were you using an Hashmap if what you wanted was to put it into a JSONObject?

根据 http://www.json.org/javadoc/org/json/JSONArray.html

在使用的 JSONObject 方法上，我正在关注以下可用代码:https://github.com/stleary/JSON-java/blob/master/JSONObject.java#L2327，该方法未被弃用.

On the JSONObject method used, I'm following the code available at: https://github.com/stleary/JSON-java/blob/master/JSONObject.java#L2327 , that method is not deprecated.

我们存储的是 JSONObject 的字符串表示，而不是 JSONObject 本身

We're storing a string representation of the JSONObject, not the JSONObject itself

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