如何使用 Gson 将 Json 字符串列表转换为 JsonObject

Question

I have a list of Json string: List<String> jsonStringList , I want to convert it to a single JsonObject using Gson, may I know what is the best way to do it?

I know I can parse them one by one like:

for (String jsonString : jsonStringList) {
    JsonElement parsed = new JsonParser().parse(jsonString);
}

But how do I join them together? What is the best way to do it?

Answer 1

        String s1 = "{\n" +
                "    \"userName\": \"RandomDiscord Name\",\n" +
                "    \"permissions\": \"read\"\n" +
                "  }";
        String s2 = "{\n" +
                "    \"userName\": \"RandomDiscord Name1\",\n" +
                "    \"permissions\": \"read2\"\n" +
                "  }";
        List<String> jsonStringList = Arrays.asList(new String[]{s1, s2});
        JSONArray arr = new JSONArray();
        for (String jsonString : jsonStringList) {
            JsonElement obj = new JsonParser().parse(jsonString);
            arr.add(obj);
        }
        String jsonString = arr.toString();
        System.out.println(jsonString);

        JSONObject obj = new JSONObject();
        try {
            obj.put("CustomObject", arr);
        } catch(JSONParseException e) {
            e.printStackTrace();
        }
        System.out.println(obj.toString());

Try to use JSONArray and while iterating List just add that object into JsonArray.

For above code, i am getting below output O/P

[{"userName":"RandomDiscord Name","permissions":"read"},{"userName":"RandomDiscord Name1","permissions":"read2"}]
{"CustomObject":[{"userName":"RandomDiscord Name","permissions":"read"},{"userName":"RandomDiscord Name1","permissions":"read2"}]}