Question

我使用以下代码从URL收集Json数据。

            var json = new WebClient().DownloadString("http://steamcommunity.com/id/tryhardhusky/inventory/json/753/6");
            JObject jo = JObject.Parse(json);
            JObject ja = (JObject)jo["rgDescriptions"];

            int cCount = 0;
            int bCount = 0;
            int eCount = 0;

            foreach(var x in ja){

                // I'm stuck here.
                string type = (Object)x["type"];

            }

            CUAI.sendMessage("I found: " + ja.Count.ToString());

在我达到foreach陈述之前，一切都运作良好这是JSON数据的片段。

{
    "success": true,
    "rgInventory": {
        "Blah other stuff"
    },
    "rgDescriptions": {
        "637390365_0": {
            "appid": "753",
            "background_color": "",
            "type": "0RBITALIS Trading Card"
        "175240190_0": {
            "appid": "753",
            "background_color": "",
            "type": "Awesomenauts Trading Card"
        },
        "195930139_0": {
            "appid": "753",
            "background_color": "",
            "type": "CONSORTIUM Emoticon"
        }
    }
}

我想循环遍历rgDescriptions中的每个项目，并将type数据作为字符串获取，然后检查它是否包含background，emoticon或{{1 }}。
我知道我可以使用trading card来检查项目类型是什么，但我遇到了foreach循环问题。

如果我使用if(type.Contains("background"))，我会收到foreach(JObject x in ja)错误如果我使用cannot convert type它会出现foreach(Object x in ja) 使用Cannot apply indexing of type object和foreach(var x in ja)

时也会发生此错误

有谁能告诉我我做错了什么，拜托？

Answer 1

您的JSON中有一些错误。用jsonlint.com查看。我认为它应该是这样的：

{
    "success": true,
    "rgInventory": {
        "Blah other stuff": ""
    },
    "rgDescriptions": {
        "637390365_0": {
            "appid": "753",
            "background_color": "",
            "type": "0RBITALIS Trading Card"
        },
        "175240190_0": {
            "appid": "753",
            "background_color": "",
            "type": "Awesomenauts Trading Card"
        },
        "195930139_0": {
            "appid": "753",
            "background_color": "",
            "type": "CONSORTIUM Emoticon"
        }
    }
}

您可以使用JProperty，JToken和SelectToken方法获取类型：

var json = new WebClient().DownloadString("http://steamcommunity.com/id/tryhardhusky/inventory/json/753/6");
JObject jo = JObject.Parse(json);

foreach (JProperty x in jo.SelectToken("rgDescriptions"))
{
    JToken type = x.Value.SelectToken("type");
    string typeStr = type.ToString().ToLower();

    if (typeStr.Contains("background"))
    {
        Console.WriteLine("Contains 'background'");
    }
    if (typeStr.Contains("emoticon"))
    {
        Console.WriteLine("Contains 'emoticon'");
    }
    if (typeStr.Contains("trading card"))
    {
        Console.WriteLine("Contains 'trading card'");
    }
}

循环遍历多个JObject级别并以字符串形式收集信息

1 个答案: