I have an object with a property of type ConcurrentBag<object>.
When I am trying to deserialize a json string to my object using JsonConvert.DeserializeObject(), I get an exception which indicates the serializer is failing to convert from an array to the object's ConcurrentBag<object> data type.
Any help to solve this problem would be appreciated.
I think you will have to write a converter of sorts. Kinda like this post:
json.net: specify converter for dictionary keys
This website also has some more examples:
http://weblogs.asp.net/thangchung/archive/2010/08/26/customizing-the-converter-for-json-net.aspx
Related
In Java, when using DynamoDbMapper, what is the best way to store List<Map<Enum,Object>> datatype as JSON? Which annotations should we use to achieve this? In our case, the Enum could be serialized into a simple string, while the Object could be serialized into JSON string.
Also, could anyone clarify in which situation one must use each of these annotations #DynamoDBTypeConverter, #DynamoDBTypeConvertedJson, and #DynamoDbDocument?
I'm new to PostSharp and trying to do something that that has me vexed, but seems simple:
I'm trying to use Json.Net to serialize and deserialize an instance of MethodInterceptionArgs
Serialization work fine:
string strArgs = JsonConvert.SerializeObject(args);
But I seem to be missing something when deserializing it: What class should I be deserializing it to? MethodInterceptionArgs is abstract, so I don't think that will work.
I could create my own concrete implementation, but that seems ilke it shouldn't be necessary (and I keep getting an error that MethodInterceptionArgs does not contain a constructor that takes zero arguments)
MethodInterceptionArgs is not meant to be serialized. You should copy the relevant pieces of information into another object and serialize it.
I have seen JsonConverter used to deserialize an object from JSON string. Is it possible to deserilize an object from query string? Or, bind query string values to object properties.
My current solution is to build a JSON string from the querystring and then use JsonConverter to convert it.
As of now, you cannot do this. The methods ReadJSON() will only call if it sees that Request is POST and
RequestBody contains a stringified string.
How to deserealize undefined and nested Hashtable structure with json.net?
for example:
#"{"a" : {"b" : 1}}"
Hashtable data = JsonConvert.DeserializeObject<Hashtable>(json_str)
returns Newtonsoft.Json.Linq.JObject at data["a"], instead Hashtable
If the structure of the JSON is not known ahead of time, and the JSON does not contain any type metadata to help Json.Net figure things out, then Json.Net has no choice but to use JTokens (JObject, JProperty, JArray, JValue, etc.) to deserialize things into. That is how it is designed to work.
If you prefer to work with Hashtables, it should be possible to convert the JToken object graph into a nested Hashtable structure after the deserialization, but I'm not sure you gain much by doing that. You would be better off just learning how to read the data out of the JTokens directly. (You would have to do so in order to do the conversion anyway.)
An example would be that I am consuming json from an api. The api is not consistent in how it returns the json. Say you have an Author and it has a property of Books[]. The api is unfortunately choosing to return Author.Books (of type Book) in cases when there is only one book. The prefered method would be to return just one Book inside Author.Books[].
Json.NET understandably throws a serialization exception when I try to have it deserialize a chunk of json and it finds "Author":{"Book":{... mixed in with "Author":{"Book":["...
Is there a way around this?
Does this answer your question?
Deserializing JSON when sometimes array and sometimes object
I guess the best would be fix the json through a regex replace before sending to the deserializer. If you put here a full sample of a json provided by the API, and a json accepted, i could make the regex for you.