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author's profile photo S Nalluri
S Nalluri

OData JSON Deserialize

Posted on Mar 09 at 09:08 PM 225 Views Last edit Mar 09 at 09:12 PM 2 rev.

Hi All,

I am trying to deserialize the simple JSON data using the class /UI2/CL_JSON. However the output internal table is initial. Can you please let me know what i am missing here.

    types:
      begin of ty_ekko,
        ebeln type ebeln,
        bukrs type bukrs,
        bstyp type bstyp,
        ktwrt type string,
      end of ty_ekko.
    data:
      lt_ekko type STANDARD TABLE OF ty_ekko.
   

    /ui2/cl_json=>deserialize( 
      EXPORTING 
        json = lv_json 
      CHANGING 
        data = lt_ekko ).
   check lt_ekko is not initial.

We're on SAP_ABA - 740 SP-Level - 0009

Thank you

odata.png (19.0 kB)
ABAP Development
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  • Sandra Rossi
    Mar 10 at 12:22 AM

    You'd better post your JSON as code instead of image, because usually people won't spend time in retyping the JSON from the image to reproduce the issue and propose a solution. Sorry.

  • S Nalluri
    Mar 10 at 03:43 PM 
    {"d":{"results":[{"__metadata":{"id":"http://xxxxxx.com:8000/sap/opu/odata/SAP/ZSN_TEST_REST_SERVICE_SRV/POHeaderDataSet('4100353003')","uri":"http://xxxxxx.com:8000/sap/opu/odata/SAP/ZSN_TEST_REST_SERVICE_SRV/POHeaderDataSet('4100353003')","type":"ZSN_TEST_REST_SERVICE_SRV.POHeaderData"},"Ebeln":"4100353003","Bukrs":"0010","Bstyp":"F","Bsart":"NB","Ktwrt":"0.000"},{"__metadata":{"id":"http://xxxxxx.com:8000/sap/opu/odata/SAP/ZSN_TEST_REST_SERVICE_SRV/POHeaderDataSet('4100353103')","uri":"http://xxxxxx.com:8000/sap/opu/odata/SAP/ZSN_TEST_REST_SERVICE_SRV/POHeaderDataSet('4100353103')","type":"ZSN_TEST_REST_SERVICE_SRV.POHeaderData"},"Ebeln":"4100353103","Bukrs":"0010","Bstyp":"F","Bsart":"NB","Ktwrt":"0.000"}]}}

    JSON file

2 Answers

  • Best Answer
    author's profile photo Alexey Arseniev
    Alexey Arseniev
    Posted on Mar 13 at 05:50 PM

    Hello S Nalluri,

    you are using the wrong/incomplete receiving ABAP structure, that is why it does not work.

    Try this one:

    types:
  begin of ty_ekko,
    ebeln type ebeln,
    bukrs type bukrs,
    bstyp type bstyp,
    ktwrt type string,
  end of ty_ekko,
  begin of ty_odata_results,
    results type standard table of ty_ekko,
  end of ty_odata_results,
  begin of ty_odata,
    d type ty_odata_results,
  end of ty_odata.
data:
   ls_odata type ty_odata.

/ui2/cl_json=>deserialize( EXPORTING json = lv_json 
                           CHANGING data = ls_odata ).
check ls_odata is not initial.

    You also do not need to use the GENERATE method. It is only useful in case you do not know the JSON structure.

    BR, Alexey.

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  • author's profile photo Geert-Jan Klaps
    Geert-Jan Klaps
    Posted on Mar 09 at 09:13 PM

    Hi,

    You can't always assign the internal table to the changing parameter data. This depends on the structure of your JSON file. A full guide on how to use the class /ui2/cl_json to deserialize a JSON string can be found in this wiki: https://wiki.scn.sap.com/wiki/display/Snippets/One+more+ABAP+to+JSON+Serializer+and+Deserializer

    Best regards,

    Geert-Jan Klaps

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    • S Nalluri
      Mar 12 at 09:20 PM

      Thanks Geert-Jan Klaps, unfortunately we don't have the class - /UI2/CL_DATA_ACCESS and the changing parameter in the deserialize method never returns anything in my case . However i used the class-ZCL_JSON which is provided in the link, and it does have generate method.