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;

}

@Override

public String toString() {

    return "SubscriptionDetails{" +

            "subscriptionPlans=" + subscriptionPlans +

            '}';

}

订阅计划.java

@SerializedName("plan_name")

@Expose

public String planName;

@SerializedName("description")

@Expose

public String description;

@SerializedName("amount")

@Expose

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