如何解析动态列表与Gson注释？ [英] How to parse Dynamic lists with Gson annotations?

问题描述

我使用Retrofit和Gson来查询一个API，但是我从来没有遇到像这样的JSON响应。

响应：

  {
响应：{
Black：[
 {id：123，code ：RX766}，
 {id：324，code：RT344}]，
Green：[
 {id：3532 ，code：RT983}，
 {id：242，code：RL982}]，
Blue：[
 {id ：453，code：RY676}，
 {id：134，code：R67HJH}] 
} 
} 
  

问题是列表元素id例如black是动态的，所以我不知道他们会是什么

到目前为止，我已经为内部类型创建了一个类;

  class Type {
 @SerializedName（id）private String id; 
 @SerializedName（code）private String code; 
} 
  

有可能有以下情况吗？

  class Response {
 
 @SerializedName（response）
 List< Type>类型; 
} 
  

然后将列表ID移动到该类型中，所以Type类将变为;

  class类型{
 @SerializedName（id）private String id; 
 @SerializedName（code）private String code; 
 @SerializedName（$）private String type; //不知道如何填充它
} 
  

如果不是，那该怎么办？只用Gson属性进行解析？

好的，我刚刚看到了这个问题;
如何使用GSON解析动态JSON字段？

看起来不错，是否可以用响应对象包装泛型地图？

解决方案

如果键是动态的，你需要一张地图。

  class Response {
 @SerializedName（response）
 Map< String，List< Type>>类型; 
} 
  

反序列化后，您可以将类型转换为更多语义的类型。 / p>

如果这不合适，您需要注册 TypeAdapter 或 JsonDeserializer code>并将类地图数据自定义反序列化为简单的 List 。

I am using Retrofit and Gson to query an API, however I have never come across a JSON response like it.

The Response:

{
    Response: {
        "Black":[
            {"id":"123","code":"RX766"},
            {"id":"324","code":"RT344"}],
        "Green":[
            {"id":"3532","code":"RT983"},
            {"id":"242","code":"RL982"}],
        "Blue":[
            {"id":"453","code":"RY676"},
            {"id":"134","code":"R67HJH"}]
    }
}

The problem is the list elements id eg "black" is dynamic, so I a have no idea what they will be.

So far I have created a class for the inner type;

class Type {
    @SerializedName("id") private String id;
    @SerializedName("code") private String code;
}

Is it possible to have the following?

class Response {

    @SerializedName("response")
    List<Type> types;
}

And then move the list ID into the type, so the Type class would become;

class Type {
    @SerializedName("id") private String id;
    @SerializedName("code") private String code;
    @SerializedName("$") private String type; //not sure how this would be populated
}

If not, how else could this be parsed with just Gson attributes?

Ok so I have just seen this question; How to parse dynamic JSON fields with GSON?

which looks great, is it possible to wrap a generic map with the response object?

解决方案

If the keys are dynamic you want a map.

class Response {
    @SerializedName("response")
    Map<String, List<Type>> types;
}

After deserialization you can coerce the types into something more semantic in your domain.

If this is not suitable you will need to register a TypeAdapter or a JsonDeserializer and do custom deserialization of the map-like data into a simple List.

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