Reputation: 1905
I use JavaScript.Serializer.Deserializer
to deserialize a complex JSON object, as below:
{
"name": "rule 1",
"enabled": true,
"conditions": [{
"type": "time",
"time": "17:23:10",
"days": "125"
}, {
"type": "sensor",
"uid": "10.2.0.1",
"setpoint1": 12,
"setpoint2": 18,
"criterion": 1
}, {
"type": "sensor",
"uid": "10.3.0.1",
"setpoint1": 12,
"setpoint2": 18,
"criterion": 2
}],
"actions": {
"period": 100,
"single": false,
"act": [{
"type": "on",
"uid": "10.1.0.1"
}, {
"type": "sms",
"message": "Hello World"
}]
}
}
And I want to convert it to some classes, like below:
public class Rule
{
public string name { get; set; }
public bool enabled { get; set; }
public List<Condition> conditions { get; set; }
public List<Action> actions { get; set; }
}
public class Condition
{
public string type { get; set; }
public string uid { get; set; }
public DateTime? time { get; set; }
public string days { get; set; }
public double setpoint1 { get; set; }
public double setpoint2 { get; set; }
public int criterion { get; set; }
}
public class Action
{
public int period { get; set; }
public bool single { get; set; }
public List<Act> act { get; set; }
}
public class Act
{
public string type { get; set; }
public string uid { get; set; }
public string message { get; set; }
}
The deserialization snippet:
json = new JavaScriptSerializer();
Rule rule = (json.Deserialize<Rule>(jsonStr));
If I simplify the Rule
class and declare conditions
and actions
as simple strings
, it works fine.
But if I use the classes like above, it throws an exception:
Cannot convert object of type 'System.String' to type 'System.Collections.Generic.List`1[IoTWebApplication.Condition]'
Upvotes: 0
Views: 1254
Reputation: 1905
The problem was that the inner (nested) json was quoted and therefore was processed as a string. So when I removed the quotes, it worked fine:
json = new JavaScriptSerializer();
Rule rule = (json.Deserialize<Rule>(jsonStr));
Upvotes: 0
Reputation: 19116
The structure you create does not fit to the JSON you posted.
It should look like
public class Rule
{
public string name { get; set; }
public bool enabled { get; set; }
public Condition[ ] conditions { get; set; }
public Actions actions { get; set; }
}
public class Actions
{
public int period { get; set; }
public bool single { get; set; }
public Act[ ] act { get; set; }
}
public class Act
{
public string type { get; set; }
public string uid { get; set; }
public string message { get; set; }
}
public class Condition
{
public string type { get; set; }
public string time { get; set; }
public string days { get; set; }
public string uid { get; set; }
public int setpoint1 { get; set; }
public int setpoint2 { get; set; }
public int criterion { get; set; }
}
It is (in most cases) very easy in VS to get the classes direct out of the JSON
Upvotes: 1