坚持从 JSONObject 获取 JSONArray

Question

我有一个类似于以下内容的 JSON 响应：一个 Subscription POJO 类及其内部是“subscriptionPlans”的 Arraylist：订阅详细信息.java@Expose()@SerializedName("subscriptionPlans")public ArrayList<SubscriptionPlans> subscriptionPlans;public ArrayList<SubscriptionPlans> getSubscriptionPlans() {    return subscriptionPlans;}@Overridepublic String toString() {    return "SubscriptionDetails{" +            "subscriptionPlans=" + subscriptionPlans +            '}';}订阅计划.java@SerializedName("plan_name")@Exposepublic String planName;@SerializedName("description")@Exposepublic String description;@SerializedName("amount")@Exposepublic String amount;public String getPlanName() {    return planName;}public String getDescription() {    return description;}public String getAmount() {    return amount;}我正在使用 Gson 从 JSON 中获取数据并将其填充到各种 POJO 类中，如下所示：Gson gson = new Gson();SubscriptionDetails subscriptionDetails = gson.fromJson(String.valueOf(jsonObject.getJSONArray("subscriptionPlans")), SubscriptionDetails.class);ArrayList<SubscriptionPlans> subscriptionPlans = subscriptionDetails.getSubscriptionPlans();String amount = subscriptionPlans.get(0).getAmount();但是，我收到错误响应， java.lang.IllegalStateException:Expected BEGIN_OBJECT but was BEGIN_ARRAY at line column 2 path $我在这里错过了什么或做错了什么？

Answer 1

将整个字符串传递给 GSON，而不仅仅是String.valueOf(jsonObject.getJSONArray("subscriptionPlans"))：

SubscriptionDetails subscriptionDetails = gson.fromJson(String.valueOf(jsonObject), SubscriptionDetails.class);