问题
I am using an API called "PRTG" that is a server monitoring service. After making a call for all sensors on a device, I get this response in Fiddler:
{
"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,'toggle');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,'toggle');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,'toggle');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,'toggle');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,'toggle');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: 'Degraded'<div class=\"moreicon\"></div></div>",
"message_raw": "Warning in Disk Controller Status: 'Degraded'",
"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,'toggle');return false;\"></span>",
"favorite_raw": 0
}
]
}
I've tried to create a class structure that follows this response. It looks like this:
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; }
}
I'm running this code:
protected T Execute<T>(string urlSegment)
{
return JsonConvert.DeserializeObject<T>(Client().DownloadString(_baseUrl + '/' + urlSegment.TrimStart('/')));
}
It's a base method that's in my WebClient Wrapper that runs the url-query and tries to deserialize it into the class I choose (BasePrtgSensors). The actual call is this:
public BasePrtgSensors GetSensors(string id)
{
return Execute<BasePrtgSensors>(_resultType + _contentSensors + _output + _columnsSensors + "&id=" + id + _auth);
}
All I'm getting from my object is null and 0 values after the call. I am pretty sure that I've screwed up somewhere in the class-structure, but I'm completely new to serialization and I can't seem to find why the response won't deserialize into my class.
Thanks in advance for any guidance!
回答1:
I've just tested it myself with your code there. I get an exception when using it like so, because of the Dictionary<string, PrtgSensor>.
But, like I said in my comment, if you use a List<PrtgSensor> instead, I get everything into one BasePrtgSensors object.
The reason is, that sensors in json is an array or a list. A dictionary is always a key value pair.
来源：https://stackoverflow.com/questions/29727345/deserialize-json-from-api-response