How could I serialize and deserialize DataTable across C# and Java

[avei shriety]

A request from C# is sent to Java Server, and in Server, it will call .Net Core to serialize the C# DataTable. So I could get the binaryData(like byte[] format). When the binaryData return to C#, C# could use binFormatter.Deserialize()  to get the correct DataTable.

I could get the serialize binaryData in Java Server, such as byte[] value = response.get(key_name). And now I wonder that how I can deserialize this binaryData in Java Server, can use protobuf to deserialize?

[Marc Gravell]

OK. To share data between platforms, you need two things:

1. A shared data layout

2. A shared serialization protocol

For 1: the inbuilt DataTable layout is implementation specific. There is no shared (/common/agreed) shape that both .NET and Java both use, so: nothing is readily available out of the box here. Instead of using DataTable, I would strongly suggest either a DTO defined via something like a shared schema (such as .proto, but let's not get ahead of ourselves), or if you are using unpredictable data (since DataTable is often used ad-hoc): something much less formal - maybe just CSV/TSV

For 2: protobuf could indeed help with this bit, if we define a shared schema in 1; however, your question suggests you're using BinaryFormatter, in which case please let me emphasize: *whatever route you go*: don't use BinaryFormatter. It will hurt you - the only question is when.

On Tue, 26 Apr 2022, 04:36 'avei shriety' via Protocol Buffers, <prot...@googlegroups.com> wrote:

A request from C# is sent to Java Server, and in Server, it will call .Net Core to serialize the C# DataTable. So I could get the binaryData(like byte[] format). When the binaryData return to C#, C# could use binFormatter.Deserialize()  to get the correct DataTable.

Now I wonder that how I can get the byte[] Data in Java, which is serialized by .Net Core binFormatter.Serialize()? Or I just wonder that how I could get this serialized data like coding "String ss = data.getString("SS")"

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