java - 使用gson将json数组转换为android中的json对象？

Question

我将一个 json 数组从 Activity A 传递到 Activity B。然后我使用 GSON 库将一个值插入到数组中。这是我当前的代码。

public void gsonResponse(String json) {
    try {
        JSONObject jsonObject = new JSONObject(json);
        JSONArray jsonArray = jsonObject.getJSONArray("result");
        for (int i = 0; i < jsonArray.length(); i++) {
            LinkedHashMap<String, String> linkedHashMap = new LinkedHashMap<>();
            JSONObject innerJosonObject = new JSONObject(jsonArray.getString(i));

            // you need to put all values from jsonObject to map for managing the order..

            linkedHashMap.put("doc_no", textViewInvNo.getText().toString());
            linkedHashMap.put("itembarcode", innerJosonObject.getString("itembarcode"));
            linkedHashMap.put("net_wt", innerJosonObject.getString("net_wt"));
            linkedHashMap.put("gross_wt", innerJosonObject.getString("gross_wt"));
            linkedHashMap.put("stone_wt", innerJosonObject.getString("stone_wt"));
            linkedHashMap.put("stone_amt", innerJosonObject.getString("stone_amt"));
            linkedHashMap.put("rate", innerJosonObject.getString("rate"));
            linkedHashMap.put("making", innerJosonObject.getString("making"));
            linkedHashMap.put("qty", innerJosonObject.getString("qty"));
            linkedHashMap.put("net_rate", innerJosonObject.getString("net_rate"));
            linkedHashMap.put("item_total", innerJosonObject.getString("item_total"));
            linkedHashMap.put("sum_total", innerJosonObject.getString("sum_total"));
            Gson gson = new Gson();
            // convert linkedHashMap to json string and it will keep the insertion order..
            String string = gson.toJson(linkedHashMap, LinkedHashMap.class);
            jsonArray.put(i, string);
        }
        jsonObject.put("result", jsonArray);
        String jsonResp = jsonObject.toString();
        jsonFormattedString = jsonResp.replaceAll("\\\\","");
        Log.d("NEW JSON", jsonFormattedString);

    } catch (JSONException e) {
        e.printStackTrace();
    }
}

这个的输出是:-

{"result":["{"doc_no":"ES101","itembarcode":"BRMS","net_wt":"10","gross_wt":"1","stone_wt":"0","stone_amt":"0","rate":"32000","making":"100","qty":"1","net_rate":"32100.0","item_total":"32100.0","sum_total":"64600.0"}",
 "{"doc_no":"ES101","itembarcode":"MSAA0015","net_wt":"10","gross_wt":"11","stone_wt":"100000","stone_amt":"1","rate":"32000","making":"500","qty":"1","net_rate":"32500.0","item_total":"32500.0","sum_total":"64600.0"}"]}

但我想要的输出应该是这样的:-

[{"doc_no":"IN1001","itembarcode":"BRMS123456\nFLT22K","net_wt":"10","gross_wt":"10","stone_amt":"0","rate":"29000","making":"999","qty":"1","net_rate":"29999.0","item_total":"29999.0","sum_total":"30299.0","stone_wt":"0"},
 {"doc_no":"IN1001","itembarcode":"BRMS\nGA24K","net_wt":"10","gross_wt":"1","stone_amt":"0","rate":"32000","making":"100","qty":"1","net_rate":"","item_total":"","sum_total":"30299.0","stone_wt":""}]

我怎样才能实现它？任何建议或帮助表示赞赏。谢谢。

Answer 1

实际上你不需要下面这行:

jsonObject.put("result", jsonArray);

只需使用现有的 jsonArray，如下所示:

String jsonResp = jsonArray.toString();

另一个注意事项。你会在你的回应中得到额外的“”，这是因为 jsonArray.put(i, string); for循环中插入额外“”的语句。您可以简单地使用以下方法来解决这个问题:

    jsonResp = jsonResp.replaceAll("\"[{]", "{");
    jsonResp = jsonResp.replaceAll("[}]\"", "}");