我一直试图弄清楚如何从此api返回JSON字符串的调用中提取值。我已经阅读了无数示例,但似乎没有一个案例与我的案例足够接近,以至于我无法弄清楚。 JSON的格式如下:
{2 items
"type":"array"
"items":{2 items
"type":"object"
"properties":{6 items
"confirmed":{1 item
"type":"integer"
}
"critical":{1 item
"type":"integer"
}
"deaths":{1 item
"type":"integer"
}
"lastChange":{2 items
"type":"string"
"format":"date-time"
}
"lastUpdate":{2 items
"type":"string"
"format":"date-time"
}
"recovered":{1 item
"type":"integer"
}
}
}
}
我的OkHttp请求看起来像这样:
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
.url("https://covid-19-data.p.rapidapi.com/totals?format=json")
.get()
.addHeader("x-rapidapi-host", "covid-19-data.p.rapidapi.com")
.addHeader("x-rapidapi-key", "my-api-key")
.build();
Response response = client.newCall(request).execute();
我认为问题在于JSON中的第一项是数组。数组内是一个包含属性的对象。到目前为止,我已经尝试使用Unirest和OkHttp。
这是我尝试访问数据字段的方式:
Gson gson = new Gson();
String respJson = response.body().string();
JsonParser jparse = new JsonParser();
JsonObject job = (JsonObject)(jparse.parse(respJson));
但是我得到了错误代码
java.lang.ClassCastException: com.google.gson.JsonArray cannot be cast to
com.google.gson.JsonObject
我很困惑。我是否需要根据字符串或JSONArray创建JSONObject? 任何帮助将不胜感激!
编辑:
对不起,这是实际的响应正文:
[1 item
0:{6 items
"confirmed":15270765
"critical":63634
"deaths":624093
"lastChange":"2020-07-22T19:54:49+02:00"
"lastUpdate":"2020-07-22T20:00:04+02:00"
"recovered":9207832
}
]
当我打印response.body()。string();
[{"confirmed":23841926,"recovered":16361473,"critical":61767,"deaths":823389,"lastChange":"2020-08-25T02:11:37+02:00","lastUpdate":"2020-08-25T02:15:03+02:00"}]