Android Retrofit + rxjava解析JSON

Question

我是Retrofit和RX Java的新手，我正在嘗試解析以下JSON：

{
   "result": 
    {
        "offset": 0,
        "limit": 2,
        "count": 408,
        "sort": "",
        "results":[
            {
                "_id": "1",
                "iid": "338",
                "sv": "0",
                "sd": "20000101000000",
                "vtyp": "1",
                "sno": "0001",            
            },
            {
                "_id": "2",
                "iid": "339",
                "sv": "0",
                "sd": "20000101000000",
                "vtyp": "1",
                "sno": "0001",          
            }

        ]
    }

}

我只對“結果”中包含的對象數組感興趣。 根據我的發現，我應該實現一個JsonDeserializer來獲取該數據，並在構建RestAdapter時使用.setConverter。 這是我現在所擁有的：

class MyDeserializer implements JsonDeserializer<Pojo> {
    @Override
    public Station deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
        JsonElement element = json.getAsJsonObject().get("results");
        return new Gson().fromJson(element, Pojo.class);
    }

我希望翻新的GET調用返回

Observable<List<Pojo>>

代表“結果”中的對象

我的Pojo.class看起來像這樣：

public class Pojo {
    public String _id;
    public String iid;
    public String sv;
    public String sd;
    public String vtyp;
}

現在寫，當我嘗試調用API時遇到此錯誤，因此我認為Json反序列化中出現了問題：

retrofit.RetrofitError: com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was BEGIN_OBJECT at line 1 column 2 path $

任何幫助，將不勝感激！

Answer 1

您需要在以下三個pojo類中創建

1. MyPojo.java

    public class MyPojo { private Result result; public Result getResult () { return result; } public void setResult (Result result) { this.result = result; } } 

2. Result.java

    public class Result { private String limit; private String sort; private Results[] results; private String count; private String offset; public String getLimit () { return limit; } public void setLimit (String limit) { this.limit = limit; } public String getSort () { return sort; } public void setSort (String sort) { this.sort = sort; } public Results[] getResults () { return results; } public void setResults (Results[] results) { this.results = results; } public String getCount () { return count; } public void setCount (String count) { this.count = count; } public String getOffset () { return offset; } public void setOffset (String offset) { this.offset = offset; } 

   }

3. 結果.java

    public class Results { private String sno; private String _id; private String iid; private String vtyp; private String sd; private String sv; public String getSno () { return sno; } public void setSno (String sno) { this.sno = sno; } public String get_id () { return _id; } public void set_id (String _id) { this._id = _id; } public String getIid () { return iid; } public void setIid (String iid) { this.iid = iid; } public String getVtyp () { return vtyp; } public void setVtyp (String vtyp) { this.vtyp = vtyp; } public String getSd () { return sd; } public void setSd (String sd) { this.sd = sd; } public String getSv () { return sv; } public void setSv (String sv) { this.sv = sv; } 

   }

在您的活動中編寫以下代碼

private RestAdapter restAdapter;

private ApiListeners apiListener;

restAdapter = new RestAdapter.Builder().setLogLevel(RestAdapter.LogLevel.FULL).setEndpoint("Your Base Url").build();
apiListener = restAdapter.create(ApiListeners.class);

apiListener.getData(new Callback<MyPojo>() 
        {
            @Override
            public void success(MyPojo pojo, Response response)
            {

            }

            @Override
            public void failure(RetrofitError error) 
            {

            }
        });

在下面的偵聽器中創建

public interface ApiListeners 
{
    @GET("/yourApiTag")
    public void getData(retrofit.Callback<MyPojo> responseVo);
}