Serialize X++ objects to JSON

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I want to use RestAPI from D365. We tried following approached
• Use newtonsoft Dll.
• Use “FormJsonSerializer“ class
And we are facing the following issue
• Unable to serialize and deserialize objects using newtonsoft dll. Always return blank object.
• We are able to serialize and deserialize object using FormJsonSerializer but if rest call contains multiple List objects then its throwing error.

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Martin Dráb 237,976 Most Valuable Professional on at

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It seems that the title is wrong; you seem to have a problem with JSON (de-)serialization, not with Rest API.

Newtonsoft.Json is what the whole world uses, including FormJsonSerializer. Please give us more details about how you're using it; it's hard to spot bugs in code that we've never seen.

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Community Member on at

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We have created the Class as

[DataContractAttribute]

public class Product

{

private str id1;

Private str name1;

[DataMemberAttribute]

public str id(str _id=id1)

{

id1 = _id;

return id1;

}

[DataMemberAttribute]

public str name(str _name=name1)

{

name1 = _name;

return name1;

}

}

Create on runnable call and added following code

Str json;

product = new Product();

product.id("1");

product.name("Test");

json = Newtonsoft.Json.JsonConvert::SerializeObject(product,Newtonsoft.Json.Formatting::Indented);

info (json);

Newton soft always return blank Json string.

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Jie G on at

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It should be nothing with D365. You can debug into the newtonsoft.dll to see why the method returns empty string.

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Sheikh Sohail 6,125 on at

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Hi

There is another easy way to handle your case.. if you can consume web service from C# client and only get response on D365.

We have the same requirement previously in one of our project. To achieve this We created everything in C# project even the attribute classes and consume the services as well with in C#.

Then add the reference of the C# project DLLs in D365FO and call the method to consume the service. even all type of serialization we were performing on C# end.

If you are still facing any issue do let me know we can discuss this in detail.

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Sasha Dudarenko 50 on at

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Show us please inbound JSON message.

If your message contain a list of your datacontracts (DC), then you have to wrap AX DC to another DC, like:

[DataContractAttribute] class DataContractClass { DataAreaId dataAreaId; List subContractList; [DataMemberAttribute('DataAreaId')] public Description parmDataAreaId(DataAreaId _dataAreaId = dataAreaId) { dataAreaId = _dataAreaId; return dataAreaId; } [DataMemberAttribute('SubContractList'), AifCollectionTypeAttribute('_subContractList', Types::Class, classStr(SubContractDataContract))] public List parmSubContractList(List _subContractList = subContractList) { subContractList = _subContractList; return subContractList; } }

====

To serialize/deserialize DC use:

DataContractClass dataContract = new DataContractClass(); dataContract.parmDataAreaId('ABCD'); List subContractDCList = new List(Types::Class); SubContractDataContract subContractDC = new SubContractDataContract(); subContractDC.parmCustomerAccount('ABCD-000001'); subContractDCList.addEnd(subContractDC); dataContract.parmProjContractList(subContractDCList); //serialize DC -> JSON str jsonSerializedContract = FormJsonSerializer::serializeClass(dataContract); //deserialize JSON -> DC Object deserializedDc = FormJsonSerializer::deserializeObject(classIdGet(dataContract), jsonSerializedContract); List deserializedSubDcList = deserializedDc.parmSubContractList(); if (deserializedSubDcList) { ListEnumerator le_DeserializedSubDc = deserializedSubDcList.getEnumerator(); while (le_DeserializedSubDc.moveNext()) { SubContractDataContract deserializedSubDc = le_DeserializedSubDc.current(); //Actions with subDC } }

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Martin Dráb 237,976 Most Valuable Professional on at

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I can confirm that directly using JsonConvert::SerializeObject() doesn't work for me with normal X++ objects. I didn't investigate why; a simple workaround is defining the class in C# and using properties. Your Product class could look like this:

public class Product { public string Id { get; set; } public str Name { get; set; } }

(This is even shorter than your original code.)

Then you can use create an instance in X++, fill it with data and pass it to JsonConvert::SerializeObject() in X++. Like this:

YourCSharpLib.Product product = new YourCSharpLib.Product(); product.Id = "1"; product.Name = "Test"; str json = Newtonsoft.Json.JsonConvert::SerializeObject(product, Newtonsoft.Json.Formatting::Indented);

By the way, it's now clear that the problem isn't related to Rest API, therefore let me change the title from "RestAPI from D365" to something more fitting.

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TestBot 950 on at

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Hi sohail,

can you send your solution /way of approach.? i hav similar requirement.

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M.K. 10 on at

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This should work:

str formatedJSON = JsonConvert::SerializeObject(JsonConvert::DeserializeObject(FormJsonSerializer::serializeClass(object)), Formatting::Indented);

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0993BV on at

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After trying to figure out why JSONConvert doesnt work for the last 4 hours, I ended up doing the above suggestion. Thanks a ton! Not sure why I couldnt see this in my search earlier, but definitely a saviour.

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Mat Fergusson 7 on at

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In case anyone finds this. The output is empty because Newtonsoft is deliberately ignoring your data members.

The x compiler takes each DataMember attribute and makes a dotnet property out of it. That property is marked as "compiler generated", and Json.net will ignore compiler generated properties by default.

So, to serialise/deserialise an x object you have to tell Json.net to include compiler generated properties.

eg.

public static str Serialise(Object _obj) { Newtonsoft.Json.Serialization.DefaultContractResolver resolver = new Newtonsoft.Json.Serialization.DefaultContractResolver(); resolver.SerializeCompilerGeneratedMembers = true; Newtonsoft.Json.JsonSerializerSettings settings = new Newtonsoft.Json.JsonSerializerSettings(); settings.ContractResolver = resolver; return Newtonsoft.Json.JsonConvert::SerializeObject(_obj, settings); }

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