SAP ABAP JSON format data processing

JSON to Workspace or Internal Table

When converting data in JSON format into workspace or internal table, you need to pay attention to whether the JSON data itself contains a single piece of data or multiple pieces of data

Single data{"key": "value"} can only be converted into a workspace
That is to say, only a workspace can be defined to receive the converted data

Multiple pieces of data[{"key1": "value1"}, {"key2": "value2"}] can only be converted into an internal table
In other words, only the internal table can be definedtable to receive the converted data

* JSON data converted to workspaceCALL METHOD /ui2/cl_json=>deserializeEXPORTINGjson = v_input_jsonpretty_name = /ui2/cl_json=>pretty_mode-camel_caseCHANGINGdata = wa_input_data.* Convert JSON data to internal tableCALL METHOD /ui2/cl_json=>deserializeEXPORTINGjson = v_input_jsonpretty_name = /ui2/cl_json=>pretty_mode-camel_caseCHANGINGdata = it_input_data.

Workspace or internal table to JSON

It is much simpler to convert the workspace or internal table to JSON
Whether the incoming is an internal table or a workspace

CALL METHOD /ui2/cl_json=>serializeEXPORTINGdata = it_input_dataRECEIVINGr_json = v_output_json.