Json deserialize issue in service class

Finance and Operations/AX
1

I’m not sure what i’m missing here.

Getting error as : {
“Message”: “An exception occured when deserializing the request - Exception occurred when parsing and deserializing parameter ‘record’ - ‘Error while deserializing contract class’”,
“ExceptionType”: “XppServicesDeserializationException”,
“ActivityId”: “9df60635-4832-0006-5d42-f69d3248da01”
}

Json:
{
“record”: [
{
“Header”: {
“SalesId”: “Test”,
“DeliveryDate”: “2024-01-01”
},
“Lines”: [
{
“ItemId”: “Test1”,
“Quantity”: 2
},
{
“ItemId”: “Test2”,
“Quantity”: 5
}
]
}
]
}

Code used:
public class ARTPackingSlipService extends SysOperationServiceBase
{
[AifCollectionType(‘record’, Types::Class, classStr(ARTPackingSlipContract))]
public str process(List record)
{
ARTPackingSlipContract contract = new ARTPackingSlipContract();
ARTPackingSlipHeaderContract headerContract = new ARTPackingSlipHeaderContract();
ARTPackingSlipLineContract lineContract = new ARTPackingSlipLineContract();

    PackingSlipId                   result;
    List                            errors = new List(Types::String);
    ListEnumerator                  headerle;
    ListEnumerator                  linele;
    List                            headerList;
    List                            lineList;
    SalesId                         salesId;
    TransDate                       deliveryDate;
    ItemId                          itemId;
    Qty                             qty;
    ListEnumerator                  enumerator = record.getEnumerator();

    while (enumerator.MoveNext())
    {
        contract = enumerator.current();

        try
        {
            headerList          = contract.parmHeader();
            headerle            = headerList.getEnumerator();

            while (headerle.moveNext())
            {
                headerContract  = headerle.current();
                salesId         = headerContract.parmSalesId();
                deliveryDate    = str2Date(strDel(headerContract.parmDeliveryDate(), 11, strLen(headerContract.parmDeliveryDate())),321);
            }

            lineList            = contract.parmLine();
            linele              = lineList.getEnumerator();

            while (linele.moveNext())
            {
                lineContract    = linele.current();
                itemId          = lineContract.parmItemId();
                qty             = lineContract.parmQuantity();
            }
        }
        catch
        {
        }
    }
    return "";
}

}

[DataContract]
class ARTPackingSlipContract
{
List header;
List line;

[
    DataMemberAttribute('Header'),
    DataCollectionAttribute(Types::Class, classStr(ARTPackingSlipHeaderContract))
]
public List parmHeader(List _header = header)
{
    header = _header;
    return header;
}

[
    DataMemberAttribute('Lines'),
    DataCollectionAttribute(Types::Class, classStr(ARTPackingSlipLineContract))
]
public List parmLine(List _line = line)
{
    line = _line;
    return line;
}

}

[DataContract]
class ARTPackingSlipHeaderContract
{
str salesId;
str deliveryDate;

[DataMember('SalesId')]
public str  parmSalesId(str _SalesId = salesId)
{
    salesId = _SalesId;
    return salesId;
}

[DataMember('DeliveryDate')]
public str  parmDeliveryDate(str _DeliveryDate = deliveryDate)
{
    deliveryDate = _DeliveryDate;
    return deliveryDate;
}

}

[DataContract]
class ARTPackingSlipLineContract
{
str itemId;
Qty qty;

[DataMember('ItemId')]
public str parmItemId(str _itemId = itemId)
{
    itemId = _itemId;
    return itemId;
}

[DataMember('Quantity')]
public Qty parmQuantity(Qty _qty = qty)
{
    qty = _qty;
    return qty;
}

}

2

Facing issue when trying to debug in VS, but before debug hit the VS in postman itself getting the error message.

Thanks in advance.

3

First of all, let me try to make your code easier to read.

JSON:

{
    “record”: [ 
        {
            “Header”: {
                “SalesId”: “Test”,
                “DeliveryDate”: “2024-01-01”
            },
            “Lines”: [
                {
                    “ItemId”: “Test1”,
                    “Quantity”: 2
                },
                {
                    “ItemId”: “Test2”,
                    “Quantity”: 5
                }
            ]
        }
    ]
}

X++

public class ARTPackingSlipService extends SysOperationServiceBase
{
    [AifCollectionType(‘record’, Types::Class, classStr(ARTPackingSlipContract))]
    public str process(List record)
    {
        ARTPackingSlipContract contract = new ARTPackingSlipContract();
        ARTPackingSlipHeaderContract headerContract = new ARTPackingSlipHeaderContract();
        ARTPackingSlipLineContract lineContract = new ARTPackingSlipLineContract();

        PackingSlipId                   result;
        List                            errors = new List(Types::String);
        ListEnumerator                  headerle;
        ListEnumerator                  linele;
        List                            headerList;
        List                            lineList;
        SalesId                         salesId;
        TransDate                       deliveryDate;
        ItemId                          itemId;
        Qty                             qty;
        ListEnumerator                  enumerator = record.getEnumerator();

        while (enumerator.MoveNext())
        {
            contract = enumerator.current();

            try
            {
                headerList          = contract.parmHeader();
                headerle            = headerList.getEnumerator();

                while (headerle.moveNext())
                {
                    headerContract  = headerle.current();
                    salesId         = headerContract.parmSalesId();
                    deliveryDate    = str2Date(strDel(headerContract.parmDeliveryDate(), 11, strLen(headerContract.parmDeliveryDate())),321);
                }

                lineList            = contract.parmLine();
                linele              = lineList.getEnumerator();

                while (linele.moveNext())
                {
                    lineContract    = linele.current();
                    itemId          = lineContract.parmItemId();
                    qty             = lineContract.parmQuantity();
                }
            }
            catch
            {
            }
        }
        return "";
    }
}

[DataContract]
class ARTPackingSlipContract
{
    List header;
    List line;

    [
        DataMemberAttribute('Header'),
        DataCollectionAttribute(Types::Class, classStr(ARTPackingSlipHeaderContract))
    ]
    public List parmHeader(List _header = header)
    {
        header = _header;
        return header;
    }

    [
        DataMemberAttribute('Lines'),
        DataCollectionAttribute(Types::Class, classStr(ARTPackingSlipLineContract))
    ]
    public List parmLine(List _line = line)
    {
        line = _line;
        return line;
    }
}

[DataContract]
class ARTPackingSlipHeaderContract
{
    str salesId;
    str deliveryDate;

    [DataMember('SalesId')]
    public str  parmSalesId(str _SalesId = salesId)
    {
        salesId = _SalesId;
        return salesId;
    }

    [DataMember('DeliveryDate')]
    public str  parmDeliveryDate(str _DeliveryDate = deliveryDate)
    {
        deliveryDate = _DeliveryDate;
        return deliveryDate;
    }
}

[DataContract]
class ARTPackingSlipLineContract
{
    str itemId;
    Qty qty;

    [DataMember('ItemId')]
    public str parmItemId(str _itemId = itemId)
    {
        itemId = _itemId;
        return itemId;
    }

    [DataMember('Quantity')]
    public Qty parmQuantity(Qty _qty = qty)
    {
        qty = _qty;
        return qty;
    }

}

Then please tell us whether you really have “ and ” instead of " in your JSON (which would be a problem), or is just something that changed incorrectly when pasting it to the forum.

4

Another problem I see that according to your X++ code, Header property contains an array of headeers, but your JSON does not. I’m assuming that having multiple headers doesn’t make a good sense, therefore the problem is in ARTPackingSlipContract class, where parmHeader() should accept and return an ARTPackingSlipHeaderContract object instead of a list.

5

when pasting it to forum " got changed as “ and ”.

6

Thanks for you valuable answer @MartinDrab

Based on your comments i made the changes in ‘ARTPackingSlipContract’ class and ‘ARTPackingSlipService’ class. Now its working fine i’m able to get the json values with a header and multiple lines in VS.

X++

[DataContract]
class ARTPackingSlipContract
{
    ARTPackingSlipHeaderContract header;
    List line;

    [
        DataMemberAttribute('Header'),
        DataCollectionAttribute(Types::Class, classStr(ARTPackingSlipHeaderContract))
    ]
    public ARTPackingSlipHeaderContract parmHeader(ARTPackingSlipHeaderContract _header = header)
    {
        header = _header;
        return header;
    }

    [
        DataMemberAttribute('Lines'),
        DataCollectionAttribute(Types::Class, classStr(ARTPackingSlipLineContract)),
        AifCollectionTypeAttribute('_line ', Types::Class, classStr(ARTPackingSlipLineContract)),
        AifCollectionTypeAttribute('return', Types::Class, classStr(ARTPackingSlipLineContract))
    ]
    public List parmLine(List _line = line)
    {
        line = _line;
        return line;
    }
}

public class ARTPackingSlipService extends SysOperationServiceBase
{
    [AifCollectionType('record', Types::Class, classStr(ARTPackingSlipContract))]
    public str process(List record)
    {
        ARTPackingSlipContract          contract = new ARTPackingSlipContract();
        ARTPackingSlipHeaderContract    headerContract = new ARTPackingSlipHeaderContract();
        ARTPackingSlipLineContract      lineContract = new ARTPackingSlipLineContract();
        PackingSlipId                   result;
        ListEnumerator                  headerle;
        ListEnumerator                  linele;
        List                            headerList;
        List                            lineList = new List(Types::Class);
        SalesId                         salesId;
        TransDate                       deliveryDate;
        ItemId                          itemId;
        Qty                             qty;
        ListEnumerator                  enumerator = record.getEnumerator();

        while (enumerator.MoveNext())
        {
            contract = enumerator.current();

            try
            {
                headerContract  = contract.parmHeader();
                salesId         = headerContract.parmSalesId();
                deliveryDate    = str2Date(strDel(headerContract.parmDeliveryDate(), 11, strLen(headerContract.parmDeliveryDate())),321);
                    
                lineList        = contract.parmLine();
                linele          = lineList.getEnumerator();

                while (linele.moveNext())
                {
                    lineContract    = linele.current();
                    itemId          = lineContract.parmItemId();
                    qty             = lineContract.parmQuantity();
                }
            }
            catch
            {
            }
        }
        return "";
    }
}
7

I am now facing a problem where my api key look like this

{
  "Content": [
    {
      "Id": 0,
      "CommercialOrderNo": "string",
      "MerchantOrderNo": "string",
      "MerchantComment": "string",
      "BillingAddress": {
        "Line1": "string",
        "Line2": "string",
      },
      "ShippingAddress": {
        "Line1": "string",
        "Line2": "string",
      },
      "TotalFee": 0,
      "Lines": [
        {
          "Id": 0,
          "Gtin": "string",
          "Description": "string",
          "StockLocation": {
            "Id": 0,
            "Name": "string"
          },
          "UnitVat": 0,

          "ExtraData": [
            {
              "Key": "string",
              "Value": "string"
            }
          ],
          "ChannelProductNo": "string",
          "Condition": "NEW",
          "LatestDeliveryDate": "2024-07-18T07:14:42.646Z",

        }
      ],
      "Phone": "string",
      "Email": "string",
      "ExtraData": {
        "additionalProp1": "string",
        "additionalProp2": "string",

      }
    }
  ],
  "Count": 0,
  "ExceptionType": "string",
  "ValidationErrors": {
    "additionalProp1": [
      "string"
    ],
    "additionalProp2": [
      "string"
    ],
  }
}

My question is how do i deal with the “content”, “Count”, “ExceptionType” and “ValidationErrors”. I see that in your example, u have used
[AifCollectionType(‘record’, Types::Class, classStr(ARTPackingSlipContract))] to deal with record. Should i write multiple AifCollectionType to deal with “content”, “Count”, “ExceptionType” and “ValidationErrors”?

8

Content is an array of objects. You need a contract class to define the structure of these objects.
Count is a number, not an object, therefore you don’t need a class for it.
ValidationErrors is an object (with two properties; arrays of strings).