从 API 响应反序列化 JSON

Question

我正在使用一个名为"PRTG"的API，这是一个服务器监控服务。调用设备上的所有传感器后，我在 Fiddler 中得到以下响应：

{
"prtg-version": "14.2.10.2114",
"treesize": 6,
"sensors": [
    {
        "objid": 6277,
        "probe": "Koneo Kalmar AB",
        "group": "Koneo Kalmar home",
        "device": "bl0615.systempartner.local",
        "sensor": "Disk Space",
        "status": "Up",
        "status_raw": 3,
        "message": "<div class="status">OK<div class="moreicon"></div></div>",
        "message_raw": "OK",
        "lastvalue": "21 %",
        "lastvalue_raw": 21.0000,
        "priority": 4,
        "favorite": "<span class="objectisnotfavorite icon-gray ui-icon ui-icon-flag" id="fav-6277" onclick="_Prtg.objectTools.faveObject.call(this,6277,&apos;toggle&apos;);return false;"></span>",
        "favorite_raw": 0
    },
    {
        "objid": 6279,
        "probe": "Koneo Kalmar AB",
        "group": "Koneo Kalmar home",
        "device": "bl0615.systempartner.local",
        "sensor": "PING",
        "status": "Up",
        "status_raw": 3,
        "message": "<div class="status">OK<div class="moreicon"></div></div>",
        "message_raw": "OK",
        "lastvalue": "0 msec",
        "lastvalue_raw": 0.0000,
        "priority": 5,
        "favorite": "<span class="objectisnotfavorite icon-gray ui-icon ui-icon-flag" id="fav-6279" onclick="_Prtg.objectTools.faveObject.call(this,6279,&apos;toggle&apos;);return false;"></span>",
        "favorite_raw": 0
    },
    {
        "objid": 6280,
        "probe": "Koneo Kalmar AB",
        "group": "Koneo Kalmar home",
        "device": "bl0615.systempartner.local",
        "sensor": "DNS",
        "status": "Up",
         "status_raw": 3,
        "message": "<div class="status">OK: 127.0.0.1<div class="moreicon"></div></div>",
        "message_raw": "OK: 127.0.0.1",
        "lastvalue": "0 msec",
        "lastvalue_raw": 0.0000,
        "priority": 3,
        "favorite": "<span class="objectisnotfavorite icon-gray ui-icon ui-icon-flag" id="fav-6280" onclick="_Prtg.objectTools.faveObject.call(this,6280,&apos;toggle&apos;);return false;"></span>",
        "favorite_raw": 0
    },
    {
        "objid": 6799,
        "probe": "Koneo Kalmar AB",
        "group": "Koneo Kalmar home",
        "device": "bl0615.systempartner.local",
         "sensor": "Disk Free: C:\ Label:  Serial Number 34fe9d97", "status": "Up", "status_raw": 3,
        "message": "<div class="status">OK<div class="moreicon"></div></div>",
        "message_raw": "OK",
        "lastvalue": "21 %",
        "lastvalue_raw": 21.2458,
        "priority": 3,
        "favorite": "<span class="objectisnotfavorite icon-gray ui-icon ui-icon-flag" id="fav-6799" onclick="_Prtg.objectTools.faveObject.call(this,6799,&apos;toggle&apos;);return false;"></span>",
        "favorite_raw": 0
    },
    {
        "objid": 6800,
        "probe": "Koneo Kalmar AB",
        "group": "Koneo Kalmar home",
        "device": "bl0615.systempartner.local",
         "sensor": "Disk Free: D:\ Label:DATA  Serial Number 44bc0bc3", "status": "Up",
        "status_raw": 3,
        "message": "<div class="status">OK<div class="moreicon"></div></div>",
        "message_raw": "OK",
        "lastvalue": "49 %",
        "lastvalue_raw": 49.4901,
        "priority": 3,
        "favorite": "<span class="objectisnotfavorite icon-gray ui-icon ui-icon-flag" id="fav-6800" onclick="_Prtg.objectTools.faveObject.call(this,6800,&apos;toggle&apos;);return false;"></span>",
        "favorite_raw": 0
    },
    {
        "objid": 6801,
        "probe": "Koneo Kalmar AB",
        "group": "Koneo Kalmar home",
        "device": "bl0615.systempartner.local",
         "sensor": "SNMP HP Proliant System Health 1", "status": "Warning", "status_raw": 4,
        "message": "<div class="status">Warning in Disk Controller Status: &#39;Degraded&#39;<div class="moreicon"></div></div>",
        "message_raw": "Warning in Disk Controller Status: &apos;Degraded&apos;",
        "lastvalue": "2 #",
        "lastvalue_raw": 2.0000,
        "priority": 3,
        "favorite": "<span class="objectisnotfavorite icon-gray ui-icon ui-icon-flag" id="fav-6801" onclick="_Prtg.objectTools.faveObject.call(this,6801,&apos;toggle&apos;);return false;"></span>",
        "favorite_raw": 0 
    }
]
}

我尝试创建遵循此响应的类结构。它看起来像这样：

public class BasePrtgSensors
{
    [JsonProperty("prtg-version")]
    public string PrtgVersion { get; set; }
    [JsonProperty("sensors")]
    public Dictionary<string, PrtgSensor> Sensors { get; set; }
    [JsonProperty("treesize")]
    public string TreeSize { get; set; }
}
public class PrtgSensor
{
    [JsonProperty("objid")]
    public string Id { get; set; }
    [JsonProperty("probe")]
    public string Probe { get; set; }
    [JsonProperty("group")]
    public string Group { get; set; }
    [JsonProperty("device")]
    public string Device { get; set; }
    [JsonProperty("sensor")]
    public string Sensor { get; set; }
    [JsonProperty("status")]
    public string Status { get; set; }
    [JsonProperty("status_raw")]
    public string StatusRaw { get; set; }
    [JsonProperty("message")]
    public string Message { get; set; }
    [JsonProperty("message_raw")]
    public string MessageRaw { get; set; }
    [JsonProperty("lastvalue")]
    public string LastValue { get; set; }
    [JsonProperty("lastvalue_raw")]
    public string LastValueRaw { get; set; }
    [JsonProperty("priority")]
    public string Priority { get; set; }
    [JsonProperty("favorite")]
    public string Favorite { get; set; }
    [JsonProperty("favorite_raw")]
    public string FavoriteRaw { get; set; }
}

我正在运行以下代码：

protected T Execute<T>(string urlSegment)
    {
        return JsonConvert.DeserializeObject<T>(Client().DownloadString(_baseUrl + '/' + urlSegment.TrimStart('/')));
    }

它是我的WebClient Wrapperper中的一个基本方法，它运行url查询并尝试将其反序列化为我选择的类（BasePrtgSensors）。实际调用是这样的：

public BasePrtgSensors GetSensors(string id)
    {
        return Execute<BasePrtgSensors>(_resultType + _contentSensors + _output + _columnsSensors + "&id=" + id + _auth);
    }

调用后，我从对象中得到的只是 null 和 0 值。我很确定我在类结构中的某个地方搞砸了，但我对序列化完全陌生，我似乎找不到为什么响应不会反序列化到我的类中。

提前感谢您的任何指导！

Answer 1

我刚刚在那里用你的代码自己测试了它。像这样使用它时我得到了一个例外，因为Dictionary<string, PrtgSensor>.

但是，就像我在评论中所说的那样，如果您改用List<PrtgSensor>，我会将所有内容放入一个BasePrtgSensors对象中。

原因是，json 中的sensors是一个数组或列表。字典始终是键值对。