Question

我是Retrofit和RX java的新手，我正在尝试解析以下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",          
            }

        ]
    }

}

我只对“结果”中包含的对象数组感兴趣。从我能够找到的，我应该实现一个JsonDeserializer来获取该数据，并在构建RestAdapter时使用.setConverter。这就是我现在所拥有的：

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);
    }

我希望改装GET调用返回

Observable<List<Pojo>>

表示“结果”中的对象

我的Pojo.class看起来像这样：

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

现在写我在尝试调用API时遇到此错误，所以我认为我在Json反序列化中出错：

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

任何帮助将不胜感激！

Answer 1

您需要创建以下三个pojo类

MyPojo.java

public class MyPojo
{
    private Result result;

    public Result getResult ()
    {
        return result;
    }

    public void setResult (Result result)
    {
        this.result = result;
    }

}

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;
}

}

Results.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;
}

}

在活动中写下以下代码

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) 
            {

            }
        });

创建以下监听器

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

Android Retrofit + rxjava解析JSON

1 个答案: