JsonSerialize | Encode and Decode Swift objects to JSON in safe way | JSON Processing library

I am trying to receive and send simple messages from two web APIs using RabbitMQ. It is a pretty simple code for now, and I am trying to see if both the APIs are properly able to communicate with each other. The issue is that I am not receiving all the messages and unable to establish a pattern between those that I am losing and those I am receiving. Below is the sample code.

For sending messages

spring-kafka creates a ValueSerializer instance in the AbstractConfig class using a no-args constructor.

I can see that JsonSerializer has an ObjectMapper constructor which I would like to use to inject a preconfigured ObjectMapper bean.

The default ObjectMapper includes null values in the response which I would like to remove. I added spring.jackson.default-property-inclusion: NON_EMPTY to my properties.yml but since Spring creates a default instance, this does not help me.

Could someone point me in the right direction?

I have written an endpoint in .netcore 3.0 to return data but which ultimately throws the following error in the controller.

The error happens on line

I'm using jackson-databind version 2.12.3 to serialize the return of an object that should return like this:

I have a JAVA POJO which has many fields. One of the fields is Map for which I am using the Custom JsonSerializer as it can have many type of Objects. All I want to know is how can I avoid the Serialization of the fieldname only for this Map field. For all other fields in POJO, I would like to have the field name but only for this, I want to remove it.

As of now when use Jackson searlizer then I get the following output:

I have a StreamReader which I am using to deserialize my request later on as shown below -

Here s is Stream object -

I wrote a custom JsonConverter called CompententsConverter and it works fine, however I'm curious if there is a way to make use of the alternate constructor which takes params object[] converterParameters and pass over my own custom parameters from the attribute accordingly.

Likewise, I am not sure how to actually retrieve the parameters inside the JsonConverter class definition or if it's even possible to do this with a JsonConverter attribute.

inside the model, attribute with theoretical params, where some_parameter_here is a placeholder for a constant expression:

I have a code that is written in Javascript and I want to convert it to C#. What the code does is to get a javascript object and then creates a string using the key value pairs in object. How would you do something similar to this in C#.

Here is the javascript code

Full code: https://github.com/BenedictWHD/kstreams-example

So I have a producer (data-ingest), processor (external-message-processor), and consumer (internal-message-processor (This will become a processor later once I get things working, so apologies for the naming at the moment, but it is a consumer)).

The data-ingest works from what I can tell as it sends messages to the topic external_messages.

The external-message-processor attempts to read from that topic but fails with the following:

Caused by: java.lang.IllegalArgumentException: The class '[B' is not in the trusted packages: [java.util, java.lang, com.yetti.common.externalmessage, com.yetti.common.externalmessage.*]. If you believe this class is safe to deserialize, please provide its name. If the serialization is only done by a trusted source, you can also enable trust all (*).

Example of a message on the topic:

Headers: __TypeId__: [B, contentType: application/json, spring_json_header_types: {"contentType":"java.lang.String"}"eyJpZCI6IjE4ZGQ2ODc4LWYwNWQtNDJiOC1iYTdlLTU2MDhmMTkzOWU3YyIsImV4dGVybmFsTWVzc2FnZVNvdXJjZSI6IlNNUyIsIm1lc3NhZ2VUeXBlIjoiVFJBTlNBQ1RJT04iLCJudW1iZXJGcm9tIjoiMSIsIm51bWJlclRvIjoiMiIsImNjeSI6Ik5UVEwiLCJxdWFudGl0eSI6IjIuNSJ9"

As you can see the TypeId is for some reason "[B".

I have specified for all 3 of the applications to use the following serializer and deserializer: