json字符串怎么取值啊!,求大神帮帮忙

Question

String jsonStr = {"entry":[{"key":"a","value":"123"},{"key":"b","value":"456"}]}
怎么根据key取到值呢

Answer 1

    public static void main(String[] args) {
        String key = "a";
        String value = "";
        String jsonStr = "{\"entry\":[{\"key\":\"a\",\"value\":\"123\"},{\"key\":\"b\",\"value\":\"456\"}]}";
        String entry = JSON.parseObject(jsonStr).get("entry").toString();
        List<JSONObject> jsonObjects = JSON.parseArray(entry, JSONObject.class);
        for (JSONObject jsonObject : jsonObjects) {
            if (key.equals(jsonObject.get("key"))) {
                value = jsonObject.get("value").toString();
                break;
            }
            throw new RuntimeException("未找到");
        }
        System.out.println(value);

    }